Manufacturing method of bare copper conductor silicon rubber insulated wire and cable for vehicle and product thereof

Technical Field

The invention relates to a silicone rubber insulated conductor bare wire cable for automobile manufacturing method and product, a can be used for the long-term work of an automotive engine compartment temperature reaches 200 the fire-resistant cable [...] this preparation method. At the same time refers to the method for preparing the silicone rubber insulated cable for vehicle, comprises a bare copper conductor and silicone rubber insulating layer. The product performance VW60306 German standard Volkswagen, BMW Company standard LV112, ISO6722, standard general electric Company GMW15626, SAE1127 the United States standard requirements such as temperature resistance level of the 200 [...] various technical requirements of the cable, belongs to the cable manufacturing Technical Field.

Background Art

Along with the progress of the Society, gradually increased in people's living standard, to an ever-increasing demand of the vehicle, at the same time there are increasingly high requirements of the automobile. Automobile electronic equipment also become more and more abundant, gradually increased the power consumption is accordingly, to further improve the current cable bear the weight of, for safety considerations, to the wire and cable to require heat resistance is further improved. Good electric conduction capacity is the basic requirements of the cable. Therefore, silicone rubber insulated wire cable the application on the car to be increasingly wide.

At present, in electrical wire and cable-processing industry, silicon rubber insulated cable, usually adopting hot air vulcanization method of curing of the insulating layer, that is, the cable routing of the channel provided with an electric heating tube, heating the ambient air, the temperature of the extrusion die of the cable (the 300-400 [...]) very high environment by, under the high-temperature baking, silicon rubber insulation in generating free radical vulcanizing agent to react with the silicon rubber molecules, the silicon rubber vulcanization.

Under the high-temperature condition, the surface of the conductor bare is very easy to be oxidized and, at the same time, because high-temperature vulcanization of the silica gel in the residual peroxide by-product, in the cable storage process, it is extremely easy to increase oxidation of the conductor bare, serious nigrescent can be oxidized copper surface, contact resistance increase, the conductive capacity reduction, the special effects of the conductor and the terminal part of the conductive capacity, serious impact on the subsequent processing and use of the wire harness.

General the approach is to adopt the tin plating conductor at the same time the outside of the conductor with PP longitudinally wrapping paper tape or as a conductor and insulating isolation layer. Although this measure can prevent oxidation of the surface of the conductor, but compared with copper conductor with bare , tin plating conductor is to increase the cost of, the longitudinal wrap with or at the same time with the PP, leakage often occurs the phenomenon of the packet, is not stable, relatively complex process.

The invention of the automobile a silicone rubber insulated copper conductor states bare of wire and cable manufacturing method, very good bare copper to control oxidation of the conductor, which saves the longitudinal covering insulating layer, wire after storage for several months, such as the new bright surface of the conductor. The follow-up process and use of the wire harness in the requirements of the to the electric wire conductor, the conductive capacity of the wire is excellent.

Content of the invention:

The purpose of this invention, is to provide a silicone rubber insulated conductor bare wire cable for automobile manufacturing method and product, a particularly suitable for laying in the automobile engine compartment and the like require higher levels of temperature resistance, temperature variation amplitude is large, the soft requirements in the environment of the cable, and has the advantages of high temperature resistance, low temperature resistance, oil resistance, abrasion resistance, excellent performance such as bare copper of the silicon rubber insulation of the conductor of the wire cable for automobile manufacturing method and its product. In accordance with this method the wire the production cost is low, the production efficiency is high, oxidation of the conductor is not bare, the wire storage few months, conductor keep bright, the follow-up process and use of the wire harness in the requirements of the to the electric wire conductor.

The invention the above purpose and other purposes, the adoption of the following illustrated and described in detail to further embodied.

A bare silicon rubber insulation of the conductor of the wire cable for automobile manufacturing method, comprising the following steps:

1), mixing step: the speed ratio of the roller mill 1-2, the roll spacing of the roll mill 5-10mm, thin passes when roller distance 0.5-1.5 mm, the water-cooled, the cooling temperature of the 40-60 [...] , milling time 20-40 minutes; storing time after milling 12-24 hours, time flaser 10-30 minutes;

The mixing step includes methyl vinyl mixing silicone rubber 100-150, vulcanizing agent (benzoyl peroxide BP, 2, 4-dichlorobenzoyl peroxide DCBP, dicumyl peroxide DCP, 2, 5-dimethoxy base, 5-di-tert-butyl peroxide hexane DBPMH one of the) 0.3-1.6 parts, dye (iron oxide, titanium dioxide, carbon black, ultramarine, one kind of them) 0.1-1.5 parts, reinforcing agent white carbon black 3-20 parts, is through elastomers;

2), conductor preheating step

Wherein the conductor of the temperature of the preheating step the 200-350 [...] ;

3), conductor protection step

The conductor protection step pressure 0.2-7.5 MPa,

4), an insulation extrusion step,

The insulating extrusion step, a long-diameter ratio of the extrusion in the 5-20 [...] 1, extrusion temperature the 30-80 [...] , extrusion line speed 5-50m/min,

5), high-temperature vulcanization step

The vulcanization step using hot air vulcanization, sulfur tank length of not less than 16 meters, the length of the relatively good 20-28 m, curing area temperature is:1 region the 280-390 [...] , 2 area the 260-380 [...] , 3 area the 260-360 [...] , 4 region the 260-340 [...] , 5 area the 260-340 [...] , 6 area the 270-330 [...].

6), cooling control steps

The cooling control of the cooling water temperature in the steps of the the 50-90 [...] , the cooling temperature of the second section the 15-45 [...].

Furthermore, a silicone rubber insulated conductor bare for automobile manufacturing method of the electrical wire and cable, the conductor of the temperature of the preheating step the 230-330 [...] ,

The conductor protection step pressure 0.3-7 MPa,

The insulating extrusion step, a long-diameter ratio of the extrusion in the 7-18 [...] 1, extrusion temperature the 35-60 [...] , extrusion line speed 5-45m/min,

The cooling control of the cooling water temperature in the steps of the the 50-80 [...] , the cooling temperature of the second section the 20-40 [...].

Better, a bare silicon rubber insulation of the conductor of the wire cable for automobile manufacturing method, the conductor of the temperature of the preheating step the 260-350 [...] ,

The conductor protection step air pressure 0.4-6 MPa,

The insulating extrusion step, a long-diameter ratio of the extrusion in the 8-16 [...] 1, extrusion temperature the 40-50 [...] , extrusion line speed 8-40m/min,

The cooling control of the cooling water temperature in the steps of the the 60-70 [...] , the cooling temperature of the second section the 25-35 [...].

The invention is a silicon rubber insulation of the conductor bare for automobile manufacturing method of the electrical wire and cable, mixing the vinyl content of the silicone rubber in the 0.13-0.24%, silicon rubber in which white carbon black for mixing 20-50 parts, control agent structure (two phenyl silicon glycol, methyl phenyl diethoxy silane, tetramethyl-based ethylene two oxygen dimethyl silane, low molecular hydroxy silicone oil, hexamethyldisilazane one kind of them or mixture thereof) 1-5 parts.

The invention is a silicon rubber insulation of the conductor bare for automobile manufacturing method of the electrical wire and cable, the conductor protection for a 0.4-6 MPa, protective gas is an inert gas, neutral gas or a mixed gas thereof.

The invention is a silicon rubber insulation of the conductor bare for automobile manufacturing method of the electrical wire and cable, said cooling control step, a section of the cooling water tank is not less than 2 meters, the second section of the cooling water tank is not less than 3 m, better the temperature of cooling water of the 60-70 [...] , the cooling temperature of the second section the 25-35 [...].

The invention is a silicon rubber insulation of the conductor bare for automobile manufacturing method of the electrical wire and cable, the conductor is bare copper conductor, the conductor in accordance with DIN   13602 cubic-EPT1-CW004A-A020 or gigabyte/T3956 5th and 6th, without plating the requirements of the conductor layer, the conductor is made of a plurality of monofilament strand soft conductor , such conductor of the wire drawing machine the general the industry, wiring machine, preparing enclosure or cage winch, unordered special equipment.

A bare silicon rubber insulation of the conductor wire and cable products for automobile, comprises naked copper conductor and the insulating layer of the naked copper in vitro.

The cable of the invention is notably: silicon rubber insulation of the present invention wire cable for automobile structure is simple, comprising only the inner conductor and the insulating layer.

The invention used material and equipment can be bought from the market or individual common device.

According to the invention the method for silicon rubber insulation of the wires and cables for automobile, bare copper conductor has no oxidation, long-term non-oxidizing copper conductor stores bare , and completely over the wire conductor state.

The product high resistance, low temperature excellent, and has excellent mechanical can be, oil-resistant and chemical solvents and the like. The product characteristic meets the Germany public companies standard VW60306, oddy Company standard LV112, ISO6722, standard general electric Company GMW15626, SAE1127 the United States standard requirements such as temperature resistance level of the 200 [...] various technical requirements of the cable. After market products are widely used on various brands of automobile models, are imported silicon rubber automobile wire cable perfect substitute.

The bare copper conductor, no isolation layer, no oxidation of the surface of the conductor bare, wire conductor after long-term storage without oxidation, the follow-up process and use of the wire harness in the requirements of the to the electric wire conductor.

Mode of execution:

Embodiment 1 ; a bare silicon rubber insulation of the conductor of the wire cable for automobile manufacturing method,

Mixing: methyl vinyl silicone rubber rubber 100 kilogram, dye (iron oxide) 0.1 kilogram, white carbon black 3 kilogram, vulcanizing agent (BP or DCBP) 1.2 kilogram mixing, opens builds up machine the roller speed ratio of the 1 [...] 1.3, 6 mm mixed iron-smelting roller distance , thin passes the roller distance 0.7 mm, the cooling water temperature the 50 [...].

Conductor preheating: the preheating temperature the 200 [...].

Conductor protection: the protection of air pressure 0.4 MPa;

Insulating extrusion: to-diameter ratio of the screw 8 the [...] 1, the extrusion temperature of the 50 [...] , a rotation speed of a screw 70 to minutes, line speed 48 meters/minute.

Vulcanization: sulfur tank length 16 metres, adopting hot air vulcanization, the vulcanization temperature 1 region the 300-320 [...] , 2 area the 290-310 [...] , 3 area the 280-300 [...] , 4 region the 260-280 [...].

Cooling: water temperature of one of the 80 [...] , the water trough is long 2 meters, the temperature of the 45 [...] , the water trough is long 3 meters.

Naked copper conductor by naked copper and the insulating layer of the products of in vitro.

Embodiment 2 ; a bare silicon rubber insulation of the conductor of the wire cable for automobile manufacturing method,

Mixing: methyl vinyl silicone rubber rubber 120 kilogram, dye (titanium dioxide) 0.3 kilogram, white carbon black 10 kilogram, vulcanizing agent (DCBP) 0.3 kilogram milling, roller mill speed ratio of the 1 [...] 1.4, mixed iron-smelting roller distance 7 mm, 0.9 mm thin passes the roller distance, the cooling water temperature is 60 the [...].

Conductor preheating: the preheating temperature the 280 [...].

Conductor protection: the protection of pressure 0.8 MPa;

Insulating extrusion: to-diameter ratio of the screw 12 the [...] 1, the extrusion temperature of the 60 [...] , a rotation speed of a screw 60 to minutes, line speed 35 m/minute.

Vulcanization: length sulfur tank 20 meters, adopting hot air vulcanization, the vulcanization temperature 1 region the 310-330 [...] , 2 area the 300-320 [...] , 3 area the 290-310 [...] , 4 region the 280-300 [...] , 5 area the 260-280 [...].

Cooling: water temperature of the 70 [...] , the water trough is long 2.5 metres, the temperature of the 35 [...] , the water trough is long 3.5 meters.

Embodiment 3 ; a bare silicon rubber insulation of the conductor of the wire cable for automobile manufacturing method,

Mixing: methyl vinyl silicone rubber rubber 150 kilogram, dye (carbon black) 1.5 kilogram, white carbon black 15 kilogram, vulcanizing agent (or DCP DCBP) 1.5 kilogram milling, roller mill speed ratio of the 1 [...] 1.4, mixed iron-smelting roller distance 8 mm, 1 mm thin passes the roller distance, cooling water temperature of the 70 [...].

Conductor preheating: the preheating temperature the 320 [...].

Conductor protection: the protection of pressure 2 MPa;

Insulating extrusion: to-diameter ratio of the screw 14 the [...] 1, the extrusion temperature of the 60 [...] , rotating speed of the screw rod 45 rotary minutes, line speed of 20 meters/minute.

Vulcanization: length sulfur tank 24 meters, adopting hot air vulcanization, the vulcanization temperature 1 region the 330-360 [...] , 2 area the 320-340 [...] , 3 area the 310-330 [...] , 4 region the 300-320 [...] , 5 area the 280-300 [...] , 6 area the 270-290 [...].

Cooling: water temperature of the 60 [...] , the water trough is long 3 meters, the temperature of the 25 [...] , the water trough is long 4 meters.

Embodiment 4 ; a bare silicon rubber insulation of the conductor of the wire cable for automobile manufacturing method,

Mixing: methyl vinyl silicone rubber rubber 130 kilogram, dye (ultramarine) 0.6 kilogram, white carbon black 20 kilogram, vulcanizing agent (DCBP or DBPMH) 1.3 kilogram milling, roller mill speed ratio of the 1 [...] 1.2, mixed iron-smelting roller distance 10 mm, 1.2 mm thin passes the roller distance, the cooling water temperature is 80 the [...].

Conductor preheating: the preheating temperature is 350 the [...].

Conductor protection: the protection of air pressure 4 MPa;

Insulating extrusion: to-diameter ratio of the screw 16 the [...] 1, the extrusion temperature of the 60 [...] , a rotation speed of a screw 60 to minutes, line speed is 12 meters/minute.

Vulcanization: length sulfur tank 28 m, adopting hot air vulcanization, the vulcanization temperature 1 region the 350-390 [...] , 2 area the 340-380 [...] , 3 area the 330-360 [...] , 4 region the 320-340 [...] , 5 area the 300-320 [...] , 6 area the 290-310 [...].

Cooling: water temperature a of the 50 [...] , the water trough is long 4 meters, the water temperature of the the 15 [...] , the water trough is long 6 meters.

Embodiment 5 ; adopting the above-mentioned embodiment a bare silicon rubber insulation of the conductor of the wire cable for automobile manufacturing method for manufacturing a silicon rubber insulation of the conductor bare wire and cable products for automobile, comprises naked copper conductor and the insulating layer of the naked copper in vitro.