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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 18. Отображено 18.
10-06-2015 дата публикации

Preparation method of superhydrophobic superparamagnetic silicone resin composite coating

Номер: CN104694001A
Принадлежит:

The invention relates to the technical field of silicone resin composites, aims at solving the problems of poor weathering resistance, easy particle agglomeration, poor adhesion and the like of an existing Fe3O4 polymer superhydrophobic composite and provides a preparation method of a superhydrophobic superparamagnetic silicone resin composite coating. The preparation method comprises the following steps: coating the surfaces of Fe3O4 particles with SiO2, further modifying the Fe3O4 particles with a silane coupling agent, then dispersing the modified Fe3O4 particles, silicone resin and a dispersant to form a composite solution, and finally dip-coating or spin-coating the composite solution on a substrate and drying to prepare a superhydrophobic superparamagnetic silicone resin composite. The preparation process disclosed by the invention is simple, the service life of the composite is prolonged, the material has good mechanical properties, the adhesion achieves level 1 and the electromagnetic ...

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16-05-2023 дата публикации

GIS equipment air pressure compensation system

Номер: CN116131151A
Принадлежит:

The invention discloses an air pressure compensation system for GIS equipment. The air pressure compensation system for the GIS equipment comprises the GIS equipment, a temperature monitoring device, a control device and a pressure intensity adjusting device, the GIS equipment comprises an equipment body, the equipment body comprises a first GIS air chamber, a second GIS air chamber and a corrugated pipe, the corrugated pipe comprises a first end and a second end which are opposite to each other, the first end of the corrugated pipe is communicated with the first GIS air chamber, and the second end of the corrugated pipe is communicated with the second GIS air chamber; the temperature monitoring device is used for monitoring the external environment temperature of the equipment body; the input end of the control device is electrically connected with the temperature monitoring device, and the control device is used for outputting an adjusting signal based on the temperature difference value ...

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04-02-2015 дата публикации

Preparation method of silicone rubber composite material containing carbon nanotubes

Номер: CN104327512A
Принадлежит:

The invention relates to the technical field of nano composite materials, and specifically relates to a preparation method of a silicone rubber composite material containing carbon nanotubes. The preparation method comprises the following steps: preparing a polysilsesquioxane/carbon nanotube blended pre-dispersed solution through ultrasonic vibration, then blending the prepared solution with a polysiloxane solution, stirring the mixture in a high speed, removing the solvent so as to obtain a silicone rubber mixture filled by compound particles, then further mixing the obtained silicone rubber mixture with an intercrossing agent and a catalyst, and carrying out vulcanization molding so as to obtain the silicone rubber composite material. The adopted technology is simple, moreover the problems that the structure is broken by the carbon nanotube surface modification treatment, the huge mass loss, and the environment is polluted by the strong corrosive solvents are solved, the cost is saved ...

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06-06-2023 дата публикации

Operating rod for switch equipment and control method thereof

Номер: CN116230432A
Принадлежит:

The embodiment of the invention discloses an operating rod for switch equipment. The operating rod comprises a voice recognition module, a visual recognition module, a control module and a pressure sensor, the voice recognition module is in communication connection with the control module and is used for receiving voice information and sending the voice information to the control module; the visual identification module is in communication connection with the control module and is used for identifying character information in the visual detection area according to the visual identification instruction and sending the character information to the control module; and the control module is electrically connected with the pressure sensor and is used for judging whether the voice information is consistent with the character information or not and controlling the operating rod to be attracted with an operating hole in the switch equipment when the voice information is consistent with the character ...

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12-03-2014 дата публикации

Polysilsesquioxane-polyacrylate-nano SiO2 composite emulsion and preparation method and application thereof

Номер: CN103626933A
Принадлежит:

The invention relates to the field of high molecule synthesis. In order to solve the problems that the content of nano SiO2 in an acrylate polymer emulsion system is lower and the modifying process on the surface of SiO2 is tedious and the like, the invention provides a polysilsesquioxane-polyacrylate-nano SiO2 composite emulsion which consists of 20-60 parts of a polysilsesquioxane emulsion, 15-35 parts of alkyl methacrylate, 15-35 parts of alkyl acrylate, 1-5 parts of hydroxyl alkyl acrylate, 0.1-1 part of an initiator, 40-80 parts of water, 30-60 parts of a silica sol and 5-15 parts of a cosolvent. The emulsion has good appearance and storage stability. The film is high in transparency, the hardness reaches 6H, the adhesive force is level 1, and the content of silicon based on SiO2 reaches over 25%. The high silicon content polysilsesquioxane-polyacrylate-nano SiO2 composite emulsion integrates advantages of organic and inorganic materials, and the film has excellent performances such ...

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26-08-2015 дата публикации

Low density heat conduction pouring sealant and preparation method thereof

Номер: CN104861661A
Принадлежит:

The invention discloses a low density heat conduction pouring sealant which comprises 100 parts of vinyl silicone oil, 2-20 parts of cross-linking agent, 0.01-0.4 parts of catalyst, 50-300 parts of heat conduction filler, 0-15 parts of reinforcing filler, 10-60 parts of inflaming retarding filler, 5-90 parts of low density filler and 0.001-0.05 part of inhibitor. The sealant has good heat conduction performance, excellent inflaming retarding performance and dynamic performance and low density. Compared with common heat conduction pouring sealant, the sealant achieves the effect that the density is reduced by about 40%, and has wide application prospect in the field of electronic devices, electric automobiles and the like. A preparation method of the low density heat conduction pouring sealant is further provided. The method includes three steps of base material preparation, preparation of a component A and a component B and preparation of the low-density heat conduction pouring sealant.

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06-06-2023 дата публикации

Enamel supplementing method, enamel restorer and storage medium

Номер: CN116230334A
Принадлежит:

The invention discloses an enamel supplementing method, an enamel repairing device and a storage medium, and the method comprises the steps that the enamel repairing device is provided with a flaw detector, an enamel ejector, a heating radiator and a lifter, and when the enamel repairing device faces an insulation porcelain bottle installed in high-voltage power equipment of a transformer substation, the flaw detector is controlled to detect that the insulation porcelain bottle is damaged; the lifter is controlled to sequentially lift the flaw detector, the enamel ejector and the heating radiator, so that the enamel ejector and the heating radiator are sequentially aligned with the damage; controlling an enamel ejector to eject liquid enamel so as to enable the enamel to be attached to the damage; and controlling the heating radiator to directionally heat the enamel so as to solidify the enamel. According to the embodiment, enamel is directly repaired for damage, the performance of the ...

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05-05-2023 дата публикации

GIS equipment pressure monitoring method and device based on magnetic attraction principle

Номер: CN116067590A
Принадлежит:

The invention belongs to the technical field of GIS equipment and gas pressure monitoring, and discloses a GIS equipment pressure monitoring method and device based on a magnetic attraction principle. The GIS equipment pressure monitoring method based on the magnetic attraction principle comprises the steps that S1, a first strong magnet is arranged on a corrugated pipe; s2, a box body is arranged outside the corrugated pipe to seal the corrugated pipe, a second strong magnet is arranged on the outer side of the box body, the second strong magnet and the first strong magnet are arranged oppositely and marked as initial positions, and a magnetic attraction effect exists between the second strong magnet and the first strong magnet; s3, insulating gas with the same gas pressure is injected into the box body and the corrugated pipe; s4, when the second strong magnet moves and deviates from the initial position, it is judged that gas leakage occurs in the corrugated pipe. Based on the magnetic ...

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12-03-2014 дата публикации

Hydrophobic organic and inorganic acrylate polymer emulsion with high silicon content and preparation method and application thereof

Номер: CN103626911A
Принадлежит:

The invention relates to the technical field of organic and inorganic compounds. In order to solve the problems that inorganic nano SiO2 introduced to the polymer emulsion is easy to agglomerate, the content of SiO2 is low in the whole system, and some hydroxyls are contained on the surface of SiO2 to result in deficiency in hardness and hydrophobicity of a film, the invention provides a hydrophobic organic and inorganic acrylate polymer emulsion with high silicon content and a preparation method and an application thereof. The emulsion is prepared from the following components in parts by weight: 30-60 parts of a silica sol, 5-15 parts of a cosolvent, 1-5 parts of a fluorine-containing silane coupling agent, 0.2-2 parts of an emulsifier, 0.1-1 part of an initiator and 40-80 parts of water. The emulsion film has the advantages of inorganic materials and organic high polymers and can be used for preparing coatings with good weather ability, hydrophobicity, scrubbing resistance and stain ...

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25-07-2023 дата публикации

Transparent flame-retardant early-warning water-based paint as well as preparation method and application thereof

Номер: CN116478615A
Принадлежит:

The invention discloses a transparent flame-retardant early-warning water-based paint, a preparation method thereof and application of the transparent flame-retardant early-warning water-based paint in fire circulation early warning. The transparent flame-retardant early-warning water-based paint is prepared from oxidized MXene, Kevlar fibers, a functional cross-linking agent and water, the oxidized MXene is obtained by mixing H2O2 and MXene according to the mass ratio of not less than 1: 5 in water for reaction and then removing excessive H2O2. The preparation method comprises the following step: uniformly mixing the oxidized MXene, the Kevlar fiber, the functional cross-linking agent and water to obtain the transparent flame-retardant early-warning water-based paint. The coating disclosed by the invention is directly coated on flammable materials such as wood materials or wall surfaces, so that green flame retardance is realized, and meanwhile, rapid and sensitive circulating alarm response ...

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12-03-2014 дата публикации

Preparation method of functionalized graphene oxide/epoxy resin nanocomposite

Номер: CN103627139A
Принадлежит:

The invention relates to the technical field of polymer-based nanocomposites, and provides a preparation method of a functionalized graphene oxide/epoxy resin nanocomposite in order to effectively solve the problems of dispersion and interface of graphene in epoxy resin. The method comprises the steps of performing ultrasonic treatment on the silane coupling agent modified graphene oxide (f-GO) for 20-40 minutes, and dispersing in an organic solvent; adding epoxy resin, and mixing to obtain master batch; removing the organic solvent under a vacuum condition; adding a curing agent and mixing; performing high-temperature curing to obtain the functionalized graphene oxide/epoxy resin nanocomposite. The graphene oxide/epoxy resin nanocomposite prepared by the method provided by the invention can effectively improve the mechanical and thermal properties of epoxy resin, including strength, rigidity, toughness and thermal stability.

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30-10-2020 дата публикации

Novel ground pile structure

Номер: CN0211818650U

The embodiment of the utility model discloses a novel ground pile structure which is used for solving the technical problem that when an existing fence is blown by strong wind, due to the fact that afence pile is unstable, a fence rod is prone to collapsing. The embodiment of the utility model comprises a concrete floor and a steel pipe with an opening at the top, the concrete floor is provided with a cylindrical hole used for installing the steel pipe, the steel pipe is inserted into the cylindrical hole, the top of the steel pipe is exposed out of the concrete floor, and a cover plate is hinged to one side of the opening. In the embodiment, the fence rods of the fence are inserted into the steel pipes, then the fence net is arranged on the fence rods, and the steel pipes are directly buried under the ground, so that when strong wind blows, the fence rods are not prone to collapse, and the practicability is higher.

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11-08-2023 дата публикации

Ablation-resistant efficient heat-insulating room-temperature vulcanized silicone rubber foam and preparation method thereof

Номер: CN116574378A
Принадлежит:

The invention discloses ablation-resistant efficient heat-insulating room-temperature vulcanized silicone rubber foam and a preparation method thereof. The preparation method comprises the following steps: firstly, putting hydroxyl-terminated polydimethylsiloxane, vinyl-terminated polydimethylsiloxane, a catalyst, an inhibitor, a ceramizable emulsion foaming agent, a functional ceramic filler and a heat-resistant additive into a planetary stirring kettle, and stirring to obtain base rubber A; then putting hydroxyl-terminated polydimethylsiloxane, vinyl-terminated polydimethylsiloxane, hydrogen-containing silicone oil, functionalized low-melting-point glass powder and functionalized hexagonal boron nitride into a planetary stirring kettle, and stirring to obtain a base adhesive B; and finally, transferring the base rubber B into the base rubber A, vulcanizing, and then putting into a drying oven for second-stage vulcanization to obtain a final product. The filling material is low in adding ...

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15-08-2023 дата публикации

Composite wing unmanned aerial vehicle mode conversion method and device

Номер: CN116588367A
Принадлежит:

The invention provides a composite wing unmanned aerial vehicle mode conversion method and device. The method comprises the steps that the current actual air speed of a composite wing unmanned aerial vehicle is obtained; presetting a conversion speed lower limit, a conversion speed upper limit and a rotor conversion weight, and calculating the rotor conversion weight through the current actual air speed, the conversion speed lower limit and the conversion speed upper limit; obtaining a conversion mode of the composite wing unmanned aerial vehicle; in the rotor wing-fixed wing conversion mode, the attitude and the angular rate are controlled through the rotor wing conversion weight, and then control surface distribution of the rotor wing and control surface distribution of the fixed wing are controlled; when the unmanned aerial vehicle is in a fixed wing-rotor wing conversion mode, the position, the speed, the attitude and the angular rate are controlled through the rotor wing conversion ...

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29-08-2023 дата публикации

Silicone rubber compound with high storage stability as well as preparation process and application thereof

Номер: CN116656129A
Принадлежит:

The invention discloses a silicone rubber compound with high storage stability as well as a preparation process and application thereof in preparation of vulcanized silicone rubber. The preparation process comprises the following steps: adding 100 parts by mass of raw methyl vinyl silicone rubber, 18-80 parts by mass of white carbon black, 0.05-0.2 part by mass of an anti-yellowing agent and 1-4 parts by mass of organosiloxane into a kneading machine for banburying, heating a cabin of the kneading machine to 80-140 DEG C, and banburying to uniformly mix the materials; the temperature of a cabin is kept at 80-140 DEG C, 0.3-4 parts by mass of tetramethyl dihydroxy disiloxane is added for banburying, and rubber materials are mixed to be uniform; keeping the temperature of the cabin at 80-140 DEG C, adding 0.2-4 parts by mass of hydrogen-containing high-activity end group fluorosilicone hyperbranched molecules, and internally mixing to uniformly mix the rubber material; and adding 0.2-1 part ...

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11-04-2023 дата публикации

Gas chamber assembling method and device in GIS (Gas Insulated Switchgear) equipment

Номер: CN115954786A
Принадлежит:

The invention belongs to the technical field of GIS equipment production and application, and discloses a gas chamber assembling method and device in GIS equipment. According to the gas chamber assembling method in the GIS equipment, a first gas buffer chamber is arranged on the side, facing a first connecting conductor, of a first gas chamber, a second gas buffer chamber is arranged on the side, facing a second connecting conductor, of a second gas chamber, and the first connecting conductor penetrates through the first gas buffer chamber and forms a first external end; the second connecting conductor passes through the second gas buffer chamber and forms a second external end; then the first external end and the second external end are electrically connected through a conductor joint and are sealed to obtain a connection chamber; the first gas buffer chamber, the second gas buffer chamber and the connecting chamber are communicated; and finally, vacuumizing and injecting insulating gas ...

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04-02-2015 дата публикации

Organic silicone resin molding compound and preparation method thereof

Номер: CN104327507A
Принадлежит:

The invention relates to the field of organic polymer chemistry, specifically to an organic silicone resin molding compound and its preparation method. The organic silicone resin molding compound comprises the following ingredients, by weight, 15-60 parts of organic silicone resin, 20-60 parts of a quartz powder/nano-silica mixture, 15-35 parts of glass fibre, 0.01-2.50 parts of a catalyst and 0.1-5.0 parts of a release agent. The prepared organic silicone resin molding compound has excellent mechanical properties, and bending strength of the organic silicone resin molding compound is promoted greatly.

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28-12-2023 дата публикации

Silicone rubber foam with ablation resistance and high-efficiency heat insulation and preparation method thereof

Номер: US20230416485A1
Принадлежит: Hangzhou Normal University

The present disclosure provides a room-temperature-vulcanizing (RTV) silicone rubber foam with ablation resistance and high-efficiency heat insulation and a preparation method thereof. In the present disclosure, hydroxyl-terminated polydimethylsiloxane, vinyl-terminated polydimethylsiloxane, a catalyst, an inhibitor, a ceramifiable emulsion foaming agent, a functionalized ceramic filler, and a heat-resistant additive are placed in a planetary stirring tank, and stirred to obtain a base rubber A. The hydroxyl-terminated polydimethylsiloxane, the vinyl-terminated polydimethylsiloxane, a hydrogen-containing silicone oil, a functionalized low-melting glass powder, and functionalized hexagonal boron nitride are placed in the planetary stirring tank, and stirred to obtain a base rubber B. The base rubber B is transferred to the base rubber A, vulcanization is conducted, followed by after vulcanization in an oven to obtain a final product.

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