POLYURETHANE COMPOSITE MATERIAL AND PROCESS OF PREPARING SAME

The present invention relates to a polyurethane composite material, comprising a polyurethane resin matrix prepared from a polyurethane composition, and a reinforcement material, wherein the polyurethane composition comprises: A) an isocyanate component comprising one or more organic polyisocyanates; B) an isocyanate-reactive component comprising: bl) one or more organic polyols having an amount of 21-60 wt.% based on 100 % by weight of the polyurethane composition; b2) one or more (meth)acrylates comprising hydroxyl groups; and C) a radical reaction initiator; wherein the polyurethane resin matrix is prepared under such reaction conditions that the polyurethane composition undergoes addition polymerization reaction of isocyanate groups and hydroxyl groups and radical polymerization reaction simultaneously. The present invention further relates to the preparation process of the polyurethane composite material.

Wide voltage input and invariable voltage output power supply module

The invention relates to a wide voltage input and invariable voltage output power supply module, which comprises a protection circuit, a voltage conversion circuit and an invariable voltage output circuit, wherein the protection circuit is connected with the voltage conversion circuit through a filter circuit, the voltage conversion circuit is directly connected with the invariable voltage outputcircuit; the protection circuit consists of an overcurrent protection circuit and an EMC (Electro Magnetic Compatibility) protection circuit, the overcurrent protection circuit is connected with an input voltage, and is connected with the filter circuit through the EMC protection circuit. The wide voltage input and invariable voltage output power supply module has the advantages of reasonable structure, high reliability, strong practicability, wide voltage input, invariable voltage high-precision output, strong antijamming capability, high isolation voltage and high conversion efficiency, andcan ...

Magnetron sputtering apparatus manufactured by magnetic confinement magnetron sputtering method

The invention relates to a magnetic confinement magnetron sputtering method and a magnetron sputtering device prepared by use of the same. As the prior art adopts a balanced magnetron sputtering mode and an unbalanced magnetron sputtering mode, the target material utilization rate can only be raised to be between 20 and 35 percent even if permanent magnet movement or the transformation of a plurality of electromagnetic coil sets is adopted, and the prior art has the problems of complex structure and high processing cost. The magnetic confinement magnetron sputtering method forms a magnetic confinement magnetic field with the overall direction parallel to a target surface above the surface of a sputtering target. The magnetron sputtering device manufactured by use of the method comprises amagnet, a magnetic conductor, a substrate and the sputtering target, wherein contrary magnetic poles of the magnet are oppositely fixed on the sides of the sputtering target; the magnetic confinementmagnetic ...

Polyurethane Composite Material and Process for Preparing Same

The present invention relates to a process for preparing a polyurethane composite material, comprising steps of: I) preparing a premolded polyurethane molding body, wherein the premolded polyurethane molding body is prepared from a polyurethane composition under a condition that isocyanate groups and isocyanate-reactive groups comprised in the polyurethane composition undergo an addition reaction; II) curing the premolded polyurethane molding body to prepare the polyurethane composite material, wherein the premolded polyurethane molding body cures by the radical polymerization of active olefinic bonds. The process of the present application has a lower TVOC value and better processability. 2. The process according to claim 1 , wherein the curing step is performed at a temperature of 80-250° C. and a pressure of 0.1-50 MPa.3. The process according to claim 1 , wherein the content ratio by weight of b1) to b2) ranges from 30:70 to 70:30.4. The process according to claim 1 , wherein the polyurethane composite material has a Total Volatile Organic Compounds value of less than 1000 claim 1 , determined according to the standard of VDA-277.5. The process according to claim 1 , wherein the component b2) is selected from the group consisting of hydroxyethyl methacrylate claim 1 , hydroxypropyl methacrylate claim 1 , hydroxybutyl methacrylate claim 1 , hydroxyethyl acrylate claim 1 , hydroxypropyl acrylate claim 1 , hydroxybutyl acrylate and combinations thereof.6. The process according to claim 1 , wherein the organic polyol has a molecule weight of 350-10000.7. The process according to claim 1 , wherein the premolded polyurethane molding body is prepared into a shape of sheet claim 1 , strip claim 1 , ribbon or dough before used in the curing step II).8. A polyurethane composite material claim 1 , wherein the polyurethane composite material is prepared by the process according to .9. The polyurethane composite material according to claim 8 , wherein the polyurethane ...

Self-adaption network choosing method

Object surface electrification non-contact detection device

The invention relates to an object surface electrification non-contact detection device which comprises a walking device, an insulation telescopic rod, a first electric field induction assembly, a second electric field induction assembly, a first signal receiving device, a second signal receiving device and a power supply device. As the first electric field sensing assembly and the first signal receiving device are correspondingly arranged, an electric field sensor is used for detecting whether the surface of an object is electrified; the second electric field sensing assembly and the second signal receiving device are correspondingly arranged, two separated spaces are arranged in the second electric field sensing assembly, positively charged particles and negatively charged particles are arranged in the two spaces respectively, and whether the surface of an object is charged or not is detected by means of the characteristic that the charged particles are distributed in a certain direction ...

Long and short distance combined wireless communication system and method thereof

Polyurethane composite material and process of preparing same

The present invention relates to a polyurethane composite material, comprising a polyurethane resin matrix prepared from a polyurethane composition, and a reinforcement material, wherein the polyurethane composition comprises: A) an isocyanate component comprising one or more organic polyisocyanates; B) an isocyanate-reactive component comprising: b1) one or more organic polyols having an amount of 21-60 wt. % based on 100% by weight of the polyurethane composition; b2) one or more (meth)acrylates comprising hydroxyl groups; and C) a radical reaction initiator; wherein the polyurethane resin matrix is prepared under such reaction conditions that the polyurethane composition undergoes addition polymerization reaction of isocyanate groups and hydroxyl groups and radical polymerization reaction simultaneously. The present invention further relates to the preparation process of the polyurethane composite material.

Polyalkyleneimine-graft-biodegradable polymers for delivery of bioactive agents

The invention provides poly(alkyleneimine)-graft-biodegradable polymers and methods for preparing such polymers. The poly(alkyleneimine)-graft-chitosan polymers may optionally contain a targeting element. The poly(alkyleneimine)-graft polymers may be used to deliver a bioactive agent into a cell.

Polyurethane composite material and process of preparing same

The present invention relates to a polyurethane composite material, comprising a polyurethane resin matrix prepared from a polyurethane composition, and a reinforcement material, wherein the polyurethane composition comprises: A) an isocyanate component comprising one or more organic polyisocyanates; B) an isocyanate-reactive component comprising: b1) one or more organic polyols having an amount of 21-60 wt. % based on 100% by weight of the polyurethane composition; b2) one or more (meth)acrylates comprising hydroxyl groups; and C) a radical reaction initiator; wherein the polyurethane resin matrix is prepared under such reaction conditions that the polyurethane composition undergoes addition polymerization reaction of isocyanate groups and hydroxyl groups and radical polymerization reaction simultaneously. The present invention further relates to the preparation process of the polyurethane composite material.

TRACTION CONTROL SYSTEM FOR ELECTRIC MULTIPLE UNITS

The present application relates to the electronic field of railways, and in particular to the traction control system for electric multiple units. A host processor of the traction control system for electric multiple units is connected to a subordinate computer board via a CPCI bus. The traction control system for electric multiple units comprises a fast computing board, a network module and a debugging module. An instruction is passed to the subordinate computer board via the CPCI bus, and meanwhile, the subordinate computer board passes status information to the host processor via the CPCI bus to realize overall control on the interior of the traction control system for electric multiple units. Bidirectional communication between the signal sampling board and the fast computing board is realized by a high-speed differential LinkPort bus to realize quick control on the inverter power module and the four-quadrant power module. Bidirectional communication between the network card and boards of the I/O module is realized by a CAN bus, and digital signals and analog signals sent by boards of the I/O module are transferred to the host processor via the CPCI bus to ensure stability and reliability in information transmission of the traction control system for electric multiple units. 1. A traction control system for electric multiple units , provided to control the operation of inverter power module and four-quadrant power module of a traction converter for electric multiple units , mainly comprising a power supply module , inverter/four-quadrant modules , an I/O module , a network module and a debugging module , wherein ,the inverter/four-quadrant modules each mainly consist of a fast computing board, a signal sampling board and a pulse interface board,the signal sampling board is mainly configured to receive signals from an external sensor, receive pulse feedback signals sent by the pulse interface board and receive control signals sent by the fast computing board, and ...

Vegetation concrete slope protection structure and construction method

The invention provides a vegetation concrete slope protection structure and a construction method.The vegetation concrete slope protection structure comprises a recycled aggregate layer, an acid-base neutralization layer, a vegetation concrete layer and a planting layer, and the recycled aggregate layer, the acid-base neutralization layer, the vegetation concrete layer and the planting layer are sequentially stacked on an original soil surface layer from bottom to top; the continuous porosity of the vegetation concrete layer is larger than or equal to 20%. The acid-base neutralization layer comprises first planting soil and first plant seeds, and the planting layer comprises second planting soil and second plant seeds. The original soil layer is reinforced through the plant-growing concrete structure, meanwhile, recycled aggregate obtained through cyclic utilization of building waste is applied to the bottom layer of the side slope for water storage, the acid-base neutralization layer is ...

MAC and TCP coordination method

The invention relates to a mobile device including a communication protocol stack. The communication protocol stack comprises a MAC layer and a TCP layer separated by an IP layer. A cross-layer coordinating module parallel with the communication protocol stack is coupled to the MAC layer and the TCP layer. The MAC layer generates a massage sent to the cross-layer coordinating layer, which indicates that the mobile device is about to take part in the communication switch from the first base station to the second base station. The cross-layer coordinating module transfers the switch information to the TCP layer, thus notifying the TCP layer of the communication switch. If the mobile device works as a TCP sender, the TCP layer freezes the connection and state thereof in the communication switch process. If the mobile device works as a TCP accepter, the TCP layer sends a TCP ACK massage having a zero-sized notification window to the TCP sender, thus urging the TCP sender to freeze connection ...

Magnetic confinement magnetron sputtering method and magnetron sputtering apparatus manufactured by the method

The invention relates to a magnetic confinement magnetron sputtering method and a magnetron sputtering device prepared by use of the same. As the prior art adopts a balanced magnetron sputtering mode and an unbalanced magnetron sputtering mode, the target material utilization rate can only be raised to be between 20 and 35 percent even if permanent magnet movement or the transformation of a plurality of electromagnetic coil sets is adopted, and the prior art has the problems of complex structure and high processing cost. The magnetic confinement magnetron sputtering method forms a magnetic confinement magnetic field with the overall direction parallel to a target surface above the surface of a sputtering target. The magnetron sputtering device manufactured by use of the method comprises a magnet, a magnetic conductor, a substrate and the sputtering target, wherein contrary magnetic poles of the magnet are oppositely fixed on the sides of the sputtering target; the magnetic confinement magnetic ...

SLEEP MODE CONTROL FOR REAL-TIME SERVICES IN BROADBAND WIRELESS ACCESS COMMUNICATION SYSTEMS

Consideration of Quality of Service is taken into account during the establishment of a sleep cycle in a mobile station providing real-time services. Upon the mobile station's identification of a need for a real-time service to enter into sleep mode, a request conveying that need is sent to the base station. The base station replies with a start frame number and other sleep parameters. Thereafter the mobile station enters sleep mode comprising sleep intervals interleaved with listening intervals. To prevent transmission packets from being buffered at the mobile station for an excessive period of time due to attempts to transmit packets to the base station during a sleep interval, the length of the sleep interval is set so as not to exceed the maximum latency value reflecting the QoS of the real-time service negotiated during establishment of the real-time services.

Polyurethane composition for preparing polyurethane composite material

The invention relates to a polyurethane composition for preparing a polyurethane composite material. The initial viscosity of the polyurethane composition at 25DEG C is 10-600mPas. The composition comprises: a) a polyisocyanate component, wherein the polyisocyanate component includes 10-56wt% of 2,2'-diphenylmethane diisocyanate and 2,4'-diphenylmethane diisocyanate; and b) an isocyanate responsive component, wherein he isocyanate responsive component includes 30-100wt% of one or more glycerin-initiated polyether polyol, the hydroxyl value of the polyether polyol is 120-450mg KOH/g, and the viscosity of the polyether polyol is 50-450mPas. The invention also relates to a polyurethane composite material prepared by using the polyurethane composition, and a preparation method of the composite material.

Potassium-based vanadium-based low-temperature sintered microwave dielectric ceramic material and preparation method thereof

The invention discloses potassium-based vanadium-based low-temperature sintered microwave dielectric ceramic materials and a preparation method thereof. Based on the structure of typical scheelite of ABO4, low-valent K+ ions and Bi3+ are selected to occupy an A site jointly, and high-valent Mo6+ and V5+ composite cations are selected to occupy a B site; a series of ceramic materials are obtained by a solid state reaction sintering method, wherein the ceramic materials can be sintered in a temperature range below 800 DEG C, have a high dielectric constant (34<=epsilon r<=80), an adjustable temperature coefficient of resonant frequency (-260 ppm/DEG C<=TCF<=+116 ppm/DEG C), and a low microwave dielectric loss (high quality factor Qf value, 4,000 GHz<=Qf<=9,700 GHz) in microwave frequency band. The specific structure expression is (K0.5xBi1-0.5x)(MoxV1-x)O4, wherein 0.05<=x<=0.99.

COMPOSITE WIND TURBINE BLADE AND MANUFACTURING METHOD AND APPLICATION THEREOF

The present invention relates to a composite wind turbine blade, manufacturing method and application thereof. The blade comprises blade shell, shear web, spar cap and blade root, wherein the spar cap is manufactured with polyurethane resin and the blade shell is manufactured with epoxy resin. The present invention contributes to increasing stiffness of the wind turbine blade, making the wind turbine blade lighter and shortening its production cycle, thus saving manufacturing cost thereof.

PULTRUSION METHOD AND EQUIPMENT FOR PREPARING A FIBER-REINFORCED COMPOSITE

A pultrusion method, equipment for preparing a fiber-reinforced composite, and a fiber-reinforcement composite are provided. The pultrusion method comprises the following steps: i) preforming inner layer fibers; ii) impregnating the preformed inner layer fibers with a first resin to obtain a first preform; iii) heating and curing the first preform to obtain an inner layer profile; iv) preforming outer layer fibers together with the inner layer profile; v) impregnating the outer layer fibers with a second resin to obtain a second preform; and vi) heating and curing the second preform to obtain the fiber-reinforced composite.

Sleep mode control for real-time services in broadband wireless access communication systems

Consideration of Quality of Service is taken into account during the establishment of a sleep cycle in a mobile station providing real-time services. Upon the mobile station's identification of a need for a real-time service to enter into sleep mode, a request conveying that need is sent to the base station. The base station replies with a start frame number and other sleep parameters. Thereafter the mobile station enters sleep mode comprising sleep intervals interleaved with listening intervals. To prevent transmission packets from being buffered at the mobile station for an excessive period of time due to attempts to transmit packets to the base station during a sleep interval, the length of the sleep interval is set so as not to exceed the maximum latency value reflecting the QoS of the real-time service negotiated during establishment of the real-time services.

一种无线终端模块供电系统

This invention relates to a radio terminal module power supply system including a power supply loop composed of a storage power supply with variable electricity and a first capacitor, parallel to the module. When the module is in shock load, the capacitor can provide electricity to the module to avoide over large voltage drop resulted when a terminal equipment is at large power emitting to increase the effect of batteries.

MAC AND TCP COORDINATION APPROACH FOR PERFORMANCE IMPROVEMENT IN IEEE 802.16e MOBILE BROADBAND ACCESS SYSTEMS

A mobile device includes a communications protocol stack including a MAC layer and TCP layer separated by an IP layer. A cross-layer coordination module parallel to the communications protocol stack is coupled to both the MAC layer and TCP layer. The MAC layer generates a message sent to the cross-layer coordination module indicating that the mobile device is about to engage in a communications handover from a first base station to a second base station. The cross-layer coordination module passes handover information to the TCP layer so as to inform the TCP layer of the communications handover. If the mobile device is operating as a TCP sender, the TCP layer freezes its connection and state during the communications handover. If the mobile device is operating as a TCP receiver, the TCP layer sends a TCP ACK message to a TCP sender having an advertised window size set to a zero value so as to cause the TCP sender to freeze a connection and state during communications handover.

Low complexity decoding algorithm for tail-biting convolutional codes

A method for decoding tail-biting convolutional codes. The method includes initializing a correction depth, selecting a first starting state from a set of encoding states, and initializing a metric value for the selected starting state as zero and the other states as infinity. The input bit stream is read and a Search Depth Viterbi algorithm (SDVA) is performed to determine path metrics and identify a minimum-metric path. The ending state for the minimum-metric path is determined and the output for this ending state is identified as previous output. A second starting state is set to the ending state of the minimum-metric path, and symbols equal to the correction depth from the previous output are read. The SDVA is performed on the second set of read symbols to generate a corrected output. A decoded output is generated by replacing symbols at the beginning of the previous output with the corrected output.

Object storage gateway multi-activity deployment method, electronic equipment and storage medium

The invention relates to an object storage gateway multi-activity deployment method, electronic equipment and a storage medium. The object storage gateway multi-activity deployment method comprises the following steps: carrying out cross-machine-room networking by adopting a Vxlan over IPSec networking mode; deploying a distributed file system module, and configuring Ceph cluster nodes; the MON unit and the MGR unit in the Ceph cluster are installed in a binary installation package mode; the OSD unit is deployed by taking a single server hard disk as a unit; at least three copies are configured according to the Ceph cluster copy strategy number; a lightweight container arrangement module K3S cluster is arranged on a server where a central Ceph node of each region is located, and at least three Server Node nodes are deployed; selecting two regional centers to build a high-availability database unit connected with the K3SServer Node; mirroring in the K3S cluster through an official RGW unit ...

Multi-mode intelligent monitoring method and device, electronic equipment and storage medium

The invention relates to a multi-mode intelligent monitoring method and device, electronic equipment and a storage medium. The multi-mode intelligent monitoring method comprises the following steps: S1, aligning a camera with a screen to be monitored to shoot, and outputting a video stream to an image recognition module; s2, after the image recognition module obtains the video stream, the image is processed according to a recognition rule including all recognition and user definition, and data information including a screen position, a region pixel value and various characters and digits output by the image or a recognition region after image recognition is output; s3, the calculation notification module gathers and collects data information output by the image recognition module and processes the data information according to recognition rules; and S4, when the calculation notification module needs to initiate a user notification, calling an authentication operation module for authentication ...

Insulation operating rod with electroscope and operation method thereof

The invention discloses an insulating operating rod with an electroscope and an operating method of the insulating operating rod, and particularly relates to the field of distribution boxes. The operating rod structure comprises a hollow bottom rod connected to the grab handle, a plurality of hollow lengthening rods connected to the hollow bottom rod and connected to the hollow bottom rod into a whole in a sleeved mode, an air bag connected to the tail end of the grab handle and pistons connected to the interior of the hollow bottom rod and the interior of the hollow lengthening rods, and air grooves are formed in the inner walls of the hollow bottom rod and the inner walls of the hollow lengthening rods. Through the design of the operating rod structure and the auxiliary pressing assembly, when a worker carries out electricity testing operation, the worker can hold a crank manually, the crank drives an eccentric block to carry out eccentric motion, and at the moment, a sliding frame, a ...

手持终端防盗报告装置和方法

This invention discloses a method for anti-stolen report by a handheld terminal including: fetching information of said handheld terminal, sending said fetched information to predetermined number. The devices include: a setting device for designing predetermined rules and parameters, a memory device for storing said predetermined rules and data and controlling programs, a fetching device for fetching information of said handheld terminals, and a sending device for sending the fetched information control device for controlling the sending device of its information sent when information of the fetched handheld terminal meets the needs of predetermine rules according to control program, realizing sending short messages to definite numbers automatically when exchanging SIM cards.

Traction control system for electric multiple units

The present application relates to the electronic field of railways, and in particular to the traction control system for electric multiple units. A host processor of the traction control system for electric multiple units is connected to a subordinate computer board via a CPCI bus. The traction control system for electric multiple units comprises a fast computing board, a network module and a debugging module. An instruction is passed to the subordinate computer board via the CPCI bus, and meanwhile, the subordinate computer board passes status information to the host processor via the CPCI bus to realize overall control on the interior of the traction control system for electric multiple units. Bidirectional communication between the signal sampling board and the fast computing board is realized by a high-speed differential LinkPort bus to realize quick control on the inverter power module and the four-quadrant power module. Bidirectional communication between the network card and boards of the I/O module is realized by a CAN bus, and digital signals and analog signals sent by boards of the I/O module are transferred to the host processor via the CPCI bus to ensure stability and reliability in information transmission of the traction control system for electric multiple units.

Train-set traction control system

The invention relates to the railway electronic field, in particular to a traction control system of a multi-unit train. A processor host of the train-set traction control system is connected with a lower computer board card through a CPCI bus. The train-set traction control system comprises a rapid operation plate, a network module and a debugging module. An order is transmitted to the lower computer board card through the CPCI bus, meanwhile, the lower computer board card transmits state information to the processor host through the CPCI bus, and the overall control over the interior of the train-set traction control system is achieved. A signal sampling plate and the rapid operation plate perform two-way communication through a high-speed difference LinkPort bus, the rapid control over an inverter power module and a four-quadrant power module is achieved, the network board card performs two-way communication with all board cards of an I/O module through a CAN bus, the digital value and ...

Concrete placement template jacking device

The utility model discloses a concrete placement template jacking device, concrete placement template jacking device contain connecting portion, connecting portion contain drive cylinder body and a driving cylinder pole, the bottom of drive cylinder body be equipped with a hydro -cylinder, the bottom of drive cylinder body be equipped with one by connecting the connection flange array that the flange is formed, the connection flange on be equipped with a flange through -hole respectively, the below of drive cylinder body be equipped with the connecting seat body, the driving cylinder pole the top with the connection pedestal on be equipped with the fixed pedestal of a detachable respectively. During the use, the user can be fixed to build the template on respectively with a pair of fixed pedestal, then, the start -up hydro -cylinder for driving cylinder peak of the staff liter, thus the interval of template is pour to the minute adjustment, improved greatly hydraulic engineering the concrete ...

POLYURETHANE COMPOSITE MATERIAL AND PROCESS OF PREPARING SAME

The present invention relates to a polyurethane composite material, comprising a polyurethane resin matrix prepared from a polyurethane composition, and a reinforcement material, wherein the polyurethane composition comprises: A) an isocyanate component comprising one or more organic polyisocyanates; B) an isocyanate-reactive component comprising: b1) one or more organic polyols having an amount of 21-60 wt. % based on 100% by weight of the polyurethane composition; b2) one or more (meth)acrylates comprising hydroxyl groups; and C) a radical reaction initiator; wherein the polyurethane resin matrix is prepared under such reaction conditions that the polyurethane composition undergoes addition polymerization reaction of isocyanate groups and hydroxyl groups and radical polymerization reaction simultaneously. The present invention further relates to the preparation process of the polyurethane composite material. 2. The polyurethane composite material according to claim 1 , wherein the component b1) is selected from one or more polyether polyols.3. The polyurethane composite material according to claim 1 , wherein the component b2) is selected from the group consisting of hydroxyethyl methacrylate claim 1 , hydroxypropyl methacrylate claim 1 , hydroxybutyl methacrylate claim 1 , hydroxyethyl acrylate claim 1 , hydroxypropyl acrylate claim 1 , hydroxybutyl acrylate and combinations thereof.4. The polyurethane composite material according to claim 1 , wherein the organic polyols have a functionality of 1.7-6 and a hydroxyl number of 150 to 1100 mg KOH/g.5. The polyurethane composite material according to claim 4 , wherein the polyurethane composite material is prepared by a process selected from compression molding claim 4 , filament winding claim 4 , hand lay-up moulding claim 4 , spray lay-up moulding and combinations thereof.6. The polyurethane composite material according to claim 1 , wherein the organic polyol has a functionality of 1.9-4.5 and a hydroxyl number of ...

16-marshalling train network integration testing table

The invention discloses a 16-marshalling train network integration testing table aiming at a CRH5 type train. The 16-marshalling train network integration testing table comprises a network system, an ACU/TCU hauling system, an air-conditioning control system, a passenger information system, an axle box detection controller, a local display, a firework system and a charger. The 16-marshalling train network integration testing table further comprises a train bus and a vehicle bus. The network system achieves bi-directional information interchange between the train bus and the vehicle bus through a gateway, every system of the network integration testing table is communicated with a main processing unit through the vehicle bus, and the train bus is a bus running through a train, transmits control, monitoring and fault diagnostic information and guarantees system information transmitting accuracy and efficiency in the train application process. The network integration testing table further ...

PROCESS FOR PREPARING PLASTICS WITH IMPROVED HYDROLYSIS STABILITY, THE PLASTICS PREPARED FROM THE SAME AND USES THEREOF

The present invention relates to a process for preparing plastics with improved hydrolysis stability, comprising a step of adding 0.05-5 wt. % perchlorate salt which is based on 100 wt. % of the plastics, as a raw material to prepare the plastics. The present invention also relates to the plastics prepared from the process and use thereof.

Radio communication system combining with long and short distance technology and its realizing method

A radio communication system combining long distance with short distance is composed of mobile terminals for providing radio service to users, long-distance base station for providing long-distance radio access function to mobile terminals, short-distance access points for providing short-distance radio access function to mobile terminals, and server connected to long-distance base station and short-distance access points for realizing network switch of mobile terminals. Its advantages is seamless switching.

Polyurethane composite material and process for preparing same

The present invention relates to a process for preparing a polyurethane composite material, comprising steps of: I) preparing a premolded polyurethane molding body, wherein the premolded polyurethane molding body is prepared from a polyurethane composition under a condition that isocyanate groups and isocyanate-reactive groups comprised in the polyurethane composition undergo an addition reaction; II) curing the premolded polyurethane molding body to prepare the polyurethane composite material, wherein the premolded polyurethane molding body cures by the radical polymerization of active olefinic bonds. The process of the present application has a lower TVOC value and better processability.

Decoding method for tail-biting convolutional codes using a search depth viterbi algorithm

A method for decoding tail-biting convolutional codes. The method includes initializing a correction depth, selecting a first starting state from a set of encoding states, and initializing a metric value for the selected starting state as zero and the other states as infinity. The input bit stream is read and a Search Depth Viterbi algorithm (SDVA) is performed to determine path metrics and identify a minimum-metric path. The ending state for the minimum-metric path is determined and the output for this ending state is identified as previous output. A second starting state is set to the ending state of the minimum-metric path, and symbols equal to the correction depth from the previous output are read. The SDVA is performed on the second set of read symbols to generate a corrected output. A decoded output is generated by replacing symbols at the beginning of the previous output with the corrected output.

一种无线长短距移动终端切换的实现方法

The method for change-over between long distance and short distance radio mobile terminal is one kind of decision method including double terminal access and change-over threshold plus time threshold, that is, the access threshold and exit threshold are in different values and the change-over must meet the time threshold requirement. The whole change-over process includes three steps of monitoring, judgment and change-over. The change-over includes the change-over of mobile terminal from short distance communication to long distance communication and the change-over of mobile terminal from long distance communication to short distance communication as well as change-over between subzones of different short distances. The technology of the present invention realizes the seamless change-over without vibration produced.

MAC and TCP coordination approach for performance improvement in IEEE 802.16E mobile broadband access systems

A mobile device includes a communications protocol stack including a MAC layer and TCP layer separated by an IP layer. A cross-layer coordination module parallel to the communications protocol stack is coupled to both the MAC layer and TCP layer. The MAC layer generates a message sent to the cross-layer coordination module indicating that the mobile device is about to engage in a communications handover from a first base station to a second base station. The cross-layer coordination module passes handover information to the TCP layer so as to inform the TCP layer of the communications handover. If the mobile device is operating as a TCP sender, the TCP layer freezes its connection and state during the communications handover. If the mobile device is operating as a TCP receiver, the TCP layer sends a TCP ACK message to a TCP sender having an advertised window size set to a zero value so as to cause the TCP sender to freeze a connection and state during communications handover.

Polyurethane Composite Material and Process of Preparing Same

The present invention relates to a polyurethane composite material, comprising a polyurethane resin matrix prepared from a polyurethane composition, and a reinforcement material, wherein the polyurethane composition comprises: A) an isocyanate component comprising one or more organic polyisocyanates; B) an isocyanate-reactive component comprising: b1) one or more organic polyols having an amount of 21-60 wt. % based on 100% by weight of the polyurethane composition; b2) one or more (meth)acrylates comprising hydroxyl groups; and C) a radical reaction initiator; wherein the polyurethane resin matrix is prepared under such reaction conditions that the polyurethane composition undergoes addition polymerization reaction of isocyanate groups and hydroxyl groups and radical polymerization reaction simultaneously. The present invention further relates to the preparation process of the polyurethane composite material. 2. The polyurethane composite material according to claim 1 , wherein the component b1) is selected from one or more polyether polyols.3. The polyurethane composite material according to claim 1 , wherein the component b2) is selected from the group consisting of hydroxyethyl methacrylate claim 1 , hydroxypropyl methacrylate claim 1 , hydroxybutyl methacrylate claim 1 , hydroxyethyl acrylate claim 1 , hydroxypropyl acrylate claim 1 , hydroxybutyl acrylate and combinations thereof.4. The polyurethane composite material according to claim 1 , wherein the organic polyols have a functionality of 1.7-6 and a hydroxyl number of 150 to 1100 mg KOH/g.5. The polyurethane composite material according to claim 4 , wherein the polyurethane composite material is prepared by vacuum infusion process.6. The polyurethane composite material according to claim 1 , wherein the reinforcement material is selected from the group consisting of glass fibers claim 1 , carbon nanotubes claim 1 , carbon fibers claim 1 , polyester fibers claim 1 , natural fibers claim 1 , aramid fibers ...

Wireless device interconnected with portable terminal

Method and device for continuously available cloud host, electronic equipment and storage medium

The invention relates to a method and device for continuously available cloud hosts, electronic equipment and a storage medium. The continuous availability method for the cloud host comprises the following steps: S1, acquiring a CE value of a server memory by the sampling test module; s2, a sampling and collecting module is responsible for periodically collecting memory information sampled by the sampling and testing module, recording and processing a CE value of a server memory, and comparing the CE value with a preset threshold value; s3, an early warning reminding module judges a memory pre-fault according to a preset CE value judgment logic, sends an alarm when an early warning reminding threshold value is triggered, and triggers a migration management module to send a cloud host live migration instruction; and S4, the migration management module receives the alarm of the early warning reminding module, triggers a fault processing threshold value, and sends a migration management command ...

Method for stably storing isocyanurate composition

The invention relates to a method for stably storing an isocyanate composition, the stably stored isocyanate composition and polyurethane resin prepared from the isocyanate composition.

Decoding method for tail-biting convolutional codes using a search depth viterbi algorithm

A method for decoding tail-biting convolutional codes. The method includes initializing a correction depth, selecting a first starting state from a set of encoding states, and initializing a metric value for the selected starting state as zero and the other states as infinity. The input bit stream is read and a Search Depth Viterbi algorithm (SDVA) is performed to determine path metrics and identify a minimum-metric path. The ending state for the minimum-metric path is determined and the output for this ending state is identified as previous output. A second starting state is set to the ending state of the minimum-metric path, and symbols equal to the correction depth from the previous output are read. The SDVA is performed on the second set of read symbols to generate a corrected output. A decoded output is generated by replacing symbols at the beginning of the previous output with the corrected output.

Radio communication system combining with long and short distance technology and its realizing method

Molten salt heat storage system coupling thermoelectric unit

The invention discloses a fused salt heat storage system coupling thermoelectric unit, which relates to the technical field of fused salt heat storage, and comprises a thermoelectric unit, a transformer, an electric heater, a hot fused salt storage tank, an evaporator, an intermediate heater, a preheater and a cold fused salt storage tank which are connected in sequence, an outlet of the evaporator is connected with a working cylinder of the thermoelectric unit, an inlet of the preheater is connected with a water supply pipe, an outlet of the preheater is connected with a heat supply user through a pipeline, and the cold fused salt storage tank is connected with the electric heater. According to the unit, peak load shifting can be achieved, the difficulty of low-load operation of the unit is effectively relieved, thermoelectric decoupling of the unit in the peak electricity price period and the full-load power generation period can be achieved, the maximum power generation load of the unit ...

Tigersharc DSP boot management chip and method

A TigerSharc DSP boot management chip and the method thereof, the boot management chip comprises an interface unit, a two-port RAM unit, a management unit and a DSP download management unit; further comprises a flash drive unit and a NOR flash chip; the management unit is connected to the flash drive unit; the two-port RAM unit is connected to the NOR flash chip via the flash drive unit; and, the NOR flash chip is communicated with the DSP download management unit via the flash drive unit. The management unit provides two booting modes: booting via the NOR flash chip or booting via an external bus; the host boot startup method is improved and two booting program download methods are provides, which can greatly improve the booting speed of the TigerSharc DSP chip.

Low permeable oil deposit virtual horizontal well development method

The invention relates to a low permeable oil deposit virtual horizontal well development method, comprising the following process technologies: deploying a developed well pattern, early flooding under nearly high pressure condition, optimizing a perforation well section and a perforation way, designing and deploying the development technology and producing a long slot by ultra large scale fracturing. When the developed well pattern is deployed, the well pattern is designed and deployed in a region with the thickness of an oil layer being higher than a 4m line, the well pattern is a five-spot square one with the distance between an oil well row and a water well row being 490-520m and the distance between an injection well row and an extraction well row being 170-200m, wherein the directionof the oil well row and the water well row is consistent with the direction of the main geostatic stress; the early flooding is carried out under the nearly high pressure condition that the strata pressure ...

Concrete mixing transport vechicle leak protection material device

The utility model provides a concrete mixing transport vechicle leak protection material device, including connecing hopper, support frame, tape spool bearing, back shaft, connecing the hopper to fix the subassembly, wherein: on the sub vehicle frame that the support frame was fixed at the agitator truck, just tape spool bearing is fixed on this support frame, it installs in the tape spool bearing to connect the hopper to pass through the back shaft, the opening that connects the hopper is located the top that connects the hopper and should connects the focus of hopper to be located one side that the sub vehicle frame was kept away from to the back shaft, and passes through connect the fixed subassembly of hopper to make this opening that connects the hopper keep the level. The utility model discloses through connecing the fixed subassembly of hopper will connect the opening of hopper to keep the level when connecing lou the material to the messenger connect the hopper under the action ...

COMPOSITE MATERIAL COMPRISING A POLYURETHANE-POLYACRYLATE RESIN MATRIX

The present invention relates to an isocyanate-reactive component B) comprising: B1) one or more organic polyols selected from the group consisting of polyether polyols, polyester polyols, polyetherester polyols, polymer polyols, polycarbonate polyols and polyethercarbonate polyols; B2) one or more compounds having the structure of Formula (I) wherein Ris selected from the group consisting of hydrogen, methyl or ethyl; Ris selected from the group consisting of alkylene having 2 to 6 carbon atoms, 2,2-bis(4-phenylene)propane, 1,4-bis(methylene)benzene, 1,3-bis(methylene)benzene, 1,2-bis(methylene)benzene; n is an integer selected from 1 to 6; and B3) at least one radical reaction adjuvant selected from the group consisting of aryl-substituted olefins, a composite material comprising a thermosetting polyurethane-polyacrylate resin matrix made with such isocyanate-reactive component B) and a reinforcement material and a process of preparing the same. 2. An isocyanate-reactive component B) according to claim 1 , comprising from 30 to 80 wt. % of the one or more organic polyols B1) claim 1 , based on a total weight of said isocyanate reactive component B).3. An isocyanate-reactive component B) according to claim 1 , wherein B1) comprises a polyether polyol claim 1 , a polyester polyol claim 1 , or a combination thereof.4. An isocyanate-reactive component B) according to claim 1 , wherein the one or more organic polyols B1) have an OH-value of from 150 to 700 mg KOH/g and an average OH-functionality f of from 1 to 4.5.5. An isocyanate-reactive component B) according to claim 1 , comprising from 21 to 75 wt. % of the one or more compounds B2) claim 1 , based on a total weight of said isocyanate-reactive component B).6. An isocyanate-reactive component B) according to claim 1 , comprising from 0.1 to 12 wt. % of the at least one radical reaction adjuvant B3) claim 1 , based on the total weight of said isocyanate-reactive component B).7. An isocyanate-reactive component B) ...

LOW COMPLEXITY DECODING ALGORITHM FOR TAIL-BITING CONVOLUTIONAL CODES

A method for decoding tail-biting convolutional codes. The method includes initializing a correction depth, selecting a first starting state from a set of encoding states, and initializing a metric value for the selected starting state as zero and the other states as infinity. The input bit stream is read and a Search Depth Viterbi algorithm (SDVA) is performed to determine path metrics and identify a minimum-metric path. The ending state for the minimum-metric path is determined and the output for this ending state is identified as previous output. A second starting state is set to the ending state of the minimum-metric path, and symbols equal to the correction depth from the previous output are read. The SDVA is performed on the second set of read symbols to generate a corrected output. A decoded output is generated by replacing symbols at the beginning of the previous output with the corrected output.

Intelligent energy management and control method and system for rail transit

The invention discloses an intelligent energy management and control method and system for rail transit, and the method comprises the steps: data collection and processing: collecting first real-time operation data of a power supply system and second real-time operation data of a train, and correcting the first real-time operation data and the second real-time operation data; a model construction step: constructing a power flow optimization calculation model based on the historical real-time operation data of the substation and the train in combination with a preset constraint condition; and a control step: according to the working state of the substation, obtaining an optimization instruction through a power flow optimization calculation model based on the corrected first real-time operation data and the second real-time operation data, and carrying out optimization control on the controllable power supply device. Through intelligent identification of section train power requirements and ...

Motor train unit auxiliary control system

A motor train unit auxiliary control system comprises a power supply module, an auxiliary control module, an I/O module and a network debugging module. The network debugging module is formed by a network board card and a debugging board card. The network board card receives the digital quantity and analog quantity signals which are sent by the I/O module and transmits the signals to a processor host through a CPCI bus. The auxiliary control module mainly comprises a fast operation board, a signal sampling board and a pulse interface board. The signal sampling board is connected with a sampling sensor and performs both-way communication with the fast operation board and the pulse interface board respectively. The pulse interface board is connected with a train auxiliary convertor. The power supply module comprises a sensor power supply board and a system power supply board. By means of the system, the problems of slow responding speed, high production costs and the like caused by production ...

POLYALKYLENEIMINE-GRAFT-BIODEGRADABLE POLYMERS FOR DELIVERY OF BIOACTIVE AGENTS

The invention provides poly(alkyleneimine)-graft-biodegradable polymers and methods for preparing such polymers. The poly(alkyleneimine)-graft-chitosan polymers may optionally contain a targeting element. The poly(alkyleneimine)-graft polymers may be used to deliver a bioactive agent into a cell.

Semi-physical simulation testing table of network control system of high-speed motor train unit train

The invention relates to a semi-physical simulation testing table of a network control system of a high-speed motor train unit train. The semi-physical simulation testing table comprises a model management unit, a real device and a model unit, wherein the real device and the model unit communicate with the model management unit. The semi-physical simulation testing table has the following obvious advantages in train control algorithm and control logic verification and optimization: lowering the research and development cost: by the establishment of the semi-physical simulation testing table of a high-speed trainset control and management system (TCMS), the research and development period is shortened, the research and development cost is lowered; shortening the development and manufacturing period: the establishment of the semi-physical simulation testing table of the high-speed TCMS contributes to the shortening of the debugging time on the train.

DECODING METHOD FOR TAIL-BITING CONVOLUTIONAL CODES USING A SEARCH DEPTH VITERBI ALGORITHM

A method for decoding tail-biting convolutional codes. The method includes initializing a correction depth, selecting a first starting state from a set of encoding states, and initializing a metric value for the selected starting state as zero and the other states as infinity. The input bit stream is read and a Search Depth Viterbi algorithm (SDVA) is performed to determine path metrics and identify a minimum-metric path. The ending state for the minimum-metric path is determined and the output for this ending state is identified as "previous output." A second starting state is set to the ending state of the minimum-metric path, and symbols equal to the correction depth from the previous output are read. The SDVA is performed on the second set of read symbols to generate a corrected output. A decoded output is generated by replacing symbols at the beginning of the previous output with the corrected output.

HDLC -MVB gateway device

The utility model provides a HDLC -MVB gateway device which characterized in that: including power strip, HDLC card, MVB card and backplate, power strip, HDLC card link to each other with the backplate. The power strip is responsible for to the power supply of gateway device, and HDLC card connection HDLC equipment is responsible for carrying out the communication with HDLC equipment, and MVB equipment is connected to the MVB card, is responsible for and the MVB device talk, the HDLC card include HDLC owner's card and HDLC from card, HDLC owner's card links to each other with the MVB card, carries out data communication through the parallel bus between HDLC owner's card and the MVB card, HDLC owner's card all links to each other with the backplate from the card with HDLC, HDLC owner's card is followed to block with HDLC and is carried out data communication through the backplate through the CAN bus.

Wide voltage input and invariable voltage output power supply module

Method of realizing plug and play by palm computer external equipment

A method for implementing the plug-and-play function of the peripheral for palm computer includes connecting a signal detecting line between CPU and extension interface for connecting peripheral, detecting the potential level on the line to judge if there is a jump toward high level, judging if the palm computer is turned on if there is, waking up the palm computer if it is not, recognizing the type of peripheral, and loading relative device driver.

A vehicle -mounted locking means for small -size pump truck

The utility model discloses a vehicle -mounted locking means for small -size pump truck, a vehicle -mounted locking means for small -size pump truck contain the fixed bolster of a pair of relative setting, but the fixed bolster between be equipped with a rotatable movable support of dialling and a longitudinal movement's angle post. The user can directly dial movable support to pushing down to move, under of the mutually supporting of first connection horizontal bar and second connection horizontal bar for the angle post is movable downwards, insert the working face on, prevent effectively that the pump truck from sliding, effectively improved the ease for use and the reliability of water conservancy pump truck. The vehicle -mounted locking means simple structure of this small -size pump truck, convenient operation, the practicality is strong.

MAC and TCP coordination approach for performance improvement in IEEE 802.16e mobile broadband access systems

A mobile device includes a communications protocol stack including a MAC layer and TCP layer separated by an IP layer. A cross-layer coordination module parallel to the communications protocol stack is coupled to both the MAC layer and TCP layer. The MAC layer generates a message sent to the cross-layer coordination module indicating that the mobile device is about to engage in a communications handover from a first base station to a second base station. The cross-layer coordination module passes handover information to the TCP layer so as to inform the TCP layer of the communications handover. If the mobile device is operating as a TCP sender, the TCP layer freezes its connection and state during the communications handover. If the mobile device is operating as a TCP receiver, the TCP layer sends a TCP ACK message to a TCP sender having an advertised window size set to a zero value so as to cause the TCP sender to freeze a connection and state during communications handover.

Current loop gateway suitable for monorail car traction inverter and data transmission method

The invention relates to a current loop communication gateway, specifically to a current loop gateway suitable for a monorail car traction inverter and a data transmission method. The current loop gateway is based on 20mA current loop technology, adopts a high-performance FPGA chip, obtains running sate data of a train traction converter VVVF and performs packing processing on the abovementioned data, digital signals processed by the FPGA chip are converted to 20mA current signals through a high-speed optical coupler, and the 20mA current signals are sent to a network system TMS, request data of the train network system TMS are received and transmitted to the FPGA chip to be processed, thereby realizing information interaction of the monorail car traction converter VVVF and the train network system TMS, and a 20mA current loop signal conversion part realizes signal conversion through the high-speed optical coupler, thereby ensuring that electrical isolation of input and output signals is ...

在无线局域网中传输网络语音的方法及装置

This invention discloses a method for transmitting network phones in WLAN including: designing different dispatch ways of phonetic signal frame and data signal frame to acquire the largest number of phonetic users allowed by access points according to the different dispatch ways of the set phonetic signal frame and data signal frame and to set up transmission of network phones accordingly. This invention can fully utilize bandwidth of radio access points to increase volume of IP phone users in WLAN.

与便携终端互连的无线装置

The invention provides a kind of wireless device which is connected to the portable terminal. The wireless device includes a wireless model which can carry on voice, instructions, data process, it also includes a power end, which is used to acquire electricity energy and supplies to the wireless model; a interface circuit which connects to the wireless model, which is used for data transmission with the portable terminal; a radiofrequency model connecting to the wireless model, which is used in reception and transmission of radiofrequency signal with wireless network. The device has the wireless communication function.

Dormancy mode control for real time service in broadband wireless access communication system

The invention discloses a sleeping mode control used for real-time services in a wideband wireless access communication system. Service quality is considered during the establishment of a sleeping period in a mobile station providing real-time services. When the mobile station identifies that a real-time service is needed to enter a sleeping mode, the mobile station sends a request for the need to a base station. The base station responses by using a start frame number and other sleeping parameters. Then the mobile station enters the sleeping mode which comprises a sleeping time interval mutually alternated with an interception time interval. To prevent the sending of a packet from being buffered with a plurality of time periods in the mobile station due to the fact that the packet is tried to be sent to the base station during the sleeping time interval, the length of the sleeping time interval does not exceed a maximum waiting time value, and the value is reflected on a QoS of a negotiated ...

Long and short distance combined wireless communication system and method thereof

掌上电脑外置设备实现即插即用的方法

A method for implementing the plug-and-play function of the peripheral for palm computer includes connecting a signal detecting line between CPU and extension interface for connecting peripheral, detecting the potential level on the line to judge if there is a jump toward high level, judging if the palm computer is turned on if there is, waking up the palm computer if it is not, recognizing the type of peripheral, and loading relative device driver.

TIGERSHARC DSP BOOT MANAGEMENT CHIP AND METHOD

A TigerSharc DSP boot management chip and the method thereof, the boot management chip comprises an interface unit, a two-port RAM unit, a management unit and a DSP download management unit; further comprises a flash drive unit and a NOR flash chip; the management unit is connected to the flash drive unit; the two-port RAM unit is connected to the NOR flash chip via the flash drive unit; and, the NOR flash chip is communicated with the DSP download management unit via the flash drive unit. The management unit provides two booting modes: booting via the NOR flash chip or booting via an external bus; the host boot startup method is improved and two booting program download methods are provides, which can greatly improve the booting speed of the TigerSharc DSP chip. 1. A TigerSharc DSP boot management chip , comprising an interface unit , a two-port RAM unit , a management unit and a DSP download management unit; whereinthe interface unit is connected to the two-port RAM unit and the management unit, respectively;the management unit is connected to an external control system via a control line, and the management unit is further connected to the two-port RAM unit and the DSP download management unit, respectively;the DSP download management unit is connected to at least one TigerSharc DSP chip via a parallel bus;the TigerSharc DSP boot management chip further comprises a flash drive unit and a NOR flash chip; the management unit is connected to the flash drive unit; the two-port RAM unit is connected to the NOR flash chip via the flash drive unit; and, the NOR flash chip is communicated with the DSP download management unit via the flash drive unit.2. The TigerSharc DSP boot management chip according to claim 1 , wherein the interface unit comprises a PCI bus interface claim 1 , a CAN bus interface and a RS232 bus interface claim 1 , which are all connected to the management unit and the two-port RAM unit.3. The TigerSharc DSP boot management chip according to claim 1 ...

METHOD FOR MANUFACTURING FIBER-REINFORCED PLASTIC PRODUCTS

The present application relates to a method for manufacturing fiber-reinforced plastic products. This method comprises: preparing a fiber preform on a mold; disposing first and second flow meshes and first and second demolding cloths; sealing the fiber preform to form a vacuum system by pumping; penetrating the resin through the first peel ply via the first flow mesh and impregnates the fiber preform from bottom to top; penetrating the resin through the second peel ply via the second flow mesh and impregnates the fiber preform from top to bottom; and attaining a resin-impregnated fiber perform and finally attaining fiber-reinforced plastic products. 1. A method for manufacturing fiber-reinforced plastic products:preparing a fiber preform on a mold and disposing a first peel ply and a first flow mesh between said mold and said fiber perform;disposing a second peel ply and a second flow mesh on said fiber perform;disposing a first injection port and a second injection port for supplying a resin on said first flow mesh and said second flow mesh, respectively;sealing the fiber preform to form a sealing system, and pumping the air within the sealing system via a suction port until said sealing system becomes a vacuum system;supplying said resin to said first flow mesh via said first injection port so that said resin penetrates through said first peel ply and impregnates the fiber preform from bottom to top;supplying said resin to said second flow mesh via said second injection port so that said resin penetrates through said second peel ply and impregnates said fiber preform from top to bottom; andattaining a resin-impregnated fiber perform and finally attaining said fiber-reinforced plastic products,whereina first film is disposed on a resin-injection side of said fiber perform to cover said first injection port, said first peel ply, said first flow mesh and at least a part of said fiber perform, wherein after the resin is supplied to said first flow mesh via said first ...

A PROCESS FOR PRODUCING A POLYURETHANE ELASTOMER

The present invention relates to a process for producing a polyurethane elastomer, a polyurethane elastomer produced by the process, and the use of the polyurethane elastomer in a glass encapsulation/elastic gasket or the like. The process mainly includes adding a hindered amine light stabilizer to the isocyanate-containing component A. Its reaction with the organotin catalyst in the isocyanate reactive component (i.e. component B), which may cause a loss of the catalytic performance of the catalyst, is avoided. The curing speed of the polyurethane elastomer is increased, thereby the production efficiency is improved and costs are reduced. 1. A process for producing a polyurethane elastomer , comprising producing the polyurethane elastomer by reacting a reaction system comprising the following components: A1) one or more isocyanates;', 'A2) at least one hindered amine light stabilizer in a content of 0.25-8.0 pbw, based on a total weight of the component A;, 'a component A, comprising B1) an EO-terminated long-chain polyether polyol having a functionality of 3, a hydroxyl value of 17.5-35.5 mgKOH/g, and a weight average molecular weight of 4800-10000 g/mol as determined according to GB/T 21863-2008 in a content of 30-85 pbw, based on a total weight of the component B;', 'B2) optionally an EO-terminated long-chain polyether polyol having a functionality of 2, a hydroxyl value of 14.0-62.0 mgKOH/g, and a weight average molecular weight of 1800-8000 g/mol as determined according to GB/T 21863-2008 in a content of 0-55 pbw, based on a total weight of the component B;', 'B3) a catalyst, comprising B3-1) at least one organotin catalyst., 'a component B, comprising2. The process as claimed in claim 1 , wherein the hindered amine light stabilizer is selected from one claim 1 , two or more of the group consisting of (2 claim 1 ,2 claim 1 ,6 claim 1 ,6-tetramethyl-4-hydroxypiperidyl) benzoate claim 1 , bis(2 claim 1 ,2 claim 1 ,6 claim 1 ,6-tetramethyl-4-hydroxypiperidyl) ...

Motor train unit traction control system

Motor train unit traction control system

The present application relates to the electronic field of railways, and in particular to the traction control system for electric multiple units. A host processor of the traction control system for electric multiple units is connected to a subordinate computer board via a CPCI bus. The traction control system for electric multiple units comprises a fast computing board, a network module and a debugging module. An instruction is passed to the subordinate computer board via the CPCI bus, and meanwhile, the subordinate computer board passes status information to the host processor via the CPCI bus to realize overall control on the interior of the traction control system for electric multiple units. Bidirectional communication between the signal sampling board and the fast computing board is realized by a high-speed differential LinkPort bus to realize quick control on the inverter power module and the four-quadrant power module. Bidirectional communication between the network card and boards of the I/O module is realized by a CAN bus, and digital signals and analog signals sent by boards of the I/O module are transferred to the host processor via the CPCI bus to ensure stability and reliability in information transmission of the traction control system for electric multiple units.

Method for producing a spar cap, trailing edge and/or other reinforced laminate structural parts of wind turbine blade

A method for producing a Spar Cap, trailing edge or other reinforced laminate structural part of wind turbine blade, the Spar Cap, trailing edge or other reinforced laminate structural part of wind turbine blade produced by the method and its use are provided. The method for producing a Spar Cap, trailing edge or other reinforced laminate structural part of wind turbine blade improves production efficiency and saves costs.

Polyurethane composite material and process for preparing same

The present invention relates to a process for preparing a polyurethane composite material, comprising steps of: I) preparing a premolded polyurethane molding body, wherein the premolded polyurethane molding body is prepared from a polyurethane composition under a condition that isocyanate groups and isocyanate-reactive groups comprised in the polyurethane composition undergo an addition reaction; II) curing the premolded polyurethane molding body to prepare the polyurethane composite material, wherein the premolded polyurethane molding body cures by the radical polymerization of active olefinic bonds. The process of the present application has a lower TVOC value and better processability.

Rigid polyurethane foam

The present invention relates to a process for preparing a (poly)isocyanurate, a (poly)isocyanurate prepared with said process and use thereof. The process according to the present invention in which a free radical initiator is used as a trimerization catalyst provides a trimerization catalytic reaction system in which the reaction rate is mild and controllable, and the trimerization reaction of an isocyanate can be carried out in a very moderate manner.

Method for preparing a pultruded polyurethane composite

The present invention relates to a method for preparing a pultruded polyurethane composite by a polyurethane pultrusion process, a pultruded polyurethane composite prepared by said method, and uses thereof. The method for preparing a pultruded polyurethane composite of the present invention employs short molds, improves production efficiency and saves costs.

Method and system for recipe recommendation, storage medium

The present invention relates to a method and system for recipe recommendation, and a storage medium. The method comprises: receiving conversion rate-time relationships of empirical recipes, wherein the conversion rate-time relationships are formed jointly according to at least two reaction processes of the empirical recipes that produce a thermosetting resin; constructing molecular dynamic models for the empirical recipes with the conversion rate-time relationships as a target; predicting a material property of the thermosetting resin formed according to the empirical recipes based on the molecular dynamic models, and establishing a mapping with respect to the empirical recipes and the material property; and receiving a target material property of the thermosetting resin, and recommending the recipes for producing the thermosetting resin having the target material property based on the mapping. The method can reduce the experimental scale of the recipes for chemical production.

Pultrusion method and equipment for preparing a fiber-reinforced composite

The present invention relates to a pultrusion method and equipment for preparing a fiber-reinforced composite. The pultrusion method comprises the following steps: i) preforming inner layer fibers (1); ii) impregnating the preformed inner layer fibers (1) with a first resin to obtain a first preform; iii) heating and curing the first preform to obtain an inner layer profile (5); iv) preforming outer layer fibers (6) together with the inner layer profile (5); v) impregnating the outer layer fibers (6) with a second resin to obtain a second preform; and vi) heating and curing the second preform to obtain the fiber-reinforced composite. By arranging a curing step between the two impregnating steps, the method of the present invention can realize stepwise curing of the fiber-reinforced composite. With this method, a thicker fiber-reinforced composite and a fiber-reinforced composite which requires impregnation with two resins can be efficiently obtained, thereby intermingling of inner and outer layer resins and infiltration of the inner layer resin into the outer layer can be avoided.

A method for stably storing an isocyanurate composition

A method for stably storing an isocyanate composition comprising A1) one or more polyisocyanates and A2) at least one free radical initiator is provided. The method comprises adding a component A3) comprising at least one free radical inhibitor into the isocyanate composition. An isocyanate composition and a polyurethane resin prepared from the isocyanate composition is also provided.

Rigid polyurethane foam

The present invention relates to a process for preparing a (poly)isocyanurate, a (poly)isocyanurate prepared with said process and use thereof. The process according to the present invention in which a free radical initiator is used as a trimerization catalyst provides a trimerization catalytic reaction system in which the reaction rate is mild and controllable, and the trimerization reaction of an isocyanate can be carried out in a very moderate manner.

A method for stably storing an isocyanate composition

The present invention relates to a method for stably storing an isocyanate composition, the stably stored isocyanate composition, and a polyurethane resin prepared from the isocyanate composition.

一种混凝土加工搅拌结构

本实用新型涉及混凝土加工设备技术领域，尤其涉及一种混凝土加工搅拌结构。本实用新型采用的技术方案是：包括圆柱形主体装配旋转搅拌柱，所述主体装配旋转搅拌柱的左侧连接有一体成型的圆弧形搅拌结构主体结构柱，所述搅拌结构主体结构柱的外侧为圆柱形结构面，所述搅拌结构主体结构柱与所述主体装配旋转搅拌柱连接位置的左侧宽度大于右侧宽度，所述搅拌结构主体结构柱的上部中间位置设有一个长方形加速稳定搅拌连接槽。本实用新型的优点是：通过在主体结构上设置两个加速稳定搅拌连接槽结构，使它在进行搅拌时的旋转稳定性更好，使搅拌时的搅拌效果更有保障，同时能够减少在进行搅拌过程中物料对搅拌结构产生的损伤。

A method for stably storing an isocyanate composition

The present invention relates to a method for stably storing an isocyanate composition, the stably stored isocyanate composition, and a polyurethane resin prepared from the isocyanate composition.

Composite material comprising a polyurethane-polyacrylate resin matrix

The present invention relates to an isocyanate-reactive component B) comprising: B1) one or more organic polyols selected from the group consisting of poly ether polyols, polyester polyols, polyetherester polyols, polymer polyols, polycarbonate polyols and polyethercarbonate polyols; B2) one or more compounds having the structure of Formula (I) wherein, R1 is selected from the group consisting of hydrogen, methyl or ethyl; R2 is selected from the group consisting of alkylene having 2 to 6 carbon atoms, 2,2-bis(4-phenylene)-propane, 1,4- bis(methylene)benzene, 1,3-bis(methylene)benzene, 1,2-bis(methylene)benzene; n is an integer selected from 1 to 6; and B3) at least one radical reaction adjuvant selected from the group consisting of aryl-substituted olefins, a composite material comprising a thermosetting polyurethane-polyacrylate resin matrix made with such isocyanate-reactive component B) and a reinforcement material and a process of preparing the same.

Polyurethane composite

The present invention relates to a polyurethane composite, a polyurethane product comprising the polyurethane composite, and use thereof in the preparation of polyurethane products.

Polyurethane composite

The present invention relates to a polyurethane composite, a polyurethane product comprising the polyurethane composite, and use thereof in the preparation of polyurethane products.

Method for producing a spar cap, trailing edge and/or other reinforced laminate structural parts of wind turbine blade