Double-temperature thermal safe silica gel

A silica gel, warm technology, applied in the direction of heat exchange materials, chemical instruments and methods, can solve the problems of high cost of materials and processing, cumbersome production process, etc., to prevent short circuit and chain combustion, reduce short circuit, ensure The effect of consistency

Inactive Publication Date: 2018-06-22
常州市沃科科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its production process is cumbersome, and the cost of materials and processing is expensive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 100 parts of raw methyl vinyl silicone rubber with a molecular weight of 600,000 and a vinyl content of 0.04%, 40 parts of fumed silica with a specific surface area of ​​150, 20 parts of calcined kaolin, 30 parts of expanded perlite, 30 parts of fumed alumina, hydrogen 25 parts of aluminum oxide, 7 parts of hydroxy silicone oil, 0.5 part of methyltrimethoxysilane, 5 parts of iron oxide, and 0.6 part of platinum-vinyl complex, kneaded evenly in a kneader to obtain silica gel rubber. Add 2 parts of vulcanizing agent 2,5-dimethyl-2,5-2 di-tert-butylperoxyhexane to the obtained silica gel compound on the open mill, in the flat vulcanizer, through 10Mpa, 165 ° C, 10 Minutes of pressurized vulcanization, that is, double-heating safety material products.

Embodiment 2

[0024] 95 parts of methyl vinyl silicone rubber with a molecular weight of 600,000 and a vinyl content of 0.04%, 5 parts of a methyl vinyl silicone rubber with a molecular weight of 600,000 and a vinyl content of 1.0%, and 30 parts of fumed silica with a specific surface area of ​​150 , 30 parts of mica powder, 30 parts of expanded perlite, 10 parts of glass beads, 25 parts of alumina, 5 parts of fumed titanium dioxide, 20 parts of aluminum hydroxide, 15 parts of wollastonite, 8 parts of hydroxyl silicone oil, methyl trimethoxy 0.65 parts of silane, 5 parts of iron oxide, 0.8 parts of platinum-vinyl complex, kneaded evenly through a kneader to obtain a silica gel compound, add 1.0 parts of vulcanizing agent to the above prepared silica gel compound on an open mill 2,5-Dimethyl-2,5-2 di-tert-butylperoxyhexane, in a flat vulcanizer, pressurized and vulcanized at 10Mpa, 165°C, for 10 minutes, to obtain double-heating safety material products.

Embodiment 3

[0026] 100 parts of methyl vinyl silicone rubber raw rubber with a molecular weight of 800,000 and a vinyl content of 0.1%, 25 parts of fumed silica with a specific surface area of ​​150, 30 parts of mica powder, 20 parts of sepiolite, 10 parts of vermiculite powder, and 15 parts of alumina 10 parts of zinc oxide, 5 parts of iron oxide black, 30 parts of aluminum hydroxide, 20 parts of silicon micropowder. 5 parts of hydroxy silicone oil, 0.8 part of methyltrimethoxysilane, and 0.3 part of platinum dioxide were kneaded evenly by a kneader to obtain a silicone rubber compound. Add 1.0 part of the silicone rubber compound prepared above to an open mill to vulcanize The agent 2,4-dichlorobenzoyl peroxide is pressurized and vulcanized in a flat vulcanizing machine at 10Mpa, 140°C, and 10 minutes to obtain a double-heating safety material product.

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Abstract

The invention discloses double-temperature thermal safe silica gel. The double-temperature thermal safe silica gel comprises the following manufacturing materials in parts by weight: 100 parts of silicon rubber, 15 to 40 parts of white carbon black, 30 to 70 parts of heat-insulating filler, 15 to 40 parts of a heat-conducting filer, 10 to 35 parts of a flame retardant, 0.5 to 3 parts of a couplingagent, 5 to 10 parts of a structure control agent, 0.2 to 10 parts of a high-temperature catalyst, 0 to 5 parts of other aids and 0.4 to 2 parts of a vulcanizing agent. The double-temperature thermalsafe silica gel has the effects of dissipating heat at normal temperature or insulating heat at high temperature or under a fire disaster, and can dissipate heat generated by resistance, heat generation by friction as well as charging and discharging timely when being applied to components in a fire-resistant wire cable, a bus duct, an engine and a power battery to perform normal operation. Meanwhile, once the component is overheated to cause high temperature or fire disaster, the double-temperature material can be decomposed rapidly and can generate phase change under the action of a catalyst to form a hard ceramic material with a porous structure.

Description

technical field [0001] The invention relates to a silica gel material. Background technique [0002] Traditional heat insulation materials such as foam materials based on MPP, EPP, polyurethane, PVC, and CR, referred to as organic foam, have a thermal conductivity of less than 0.2w / m.k at room temperature and have good thermal insulation properties. However, this type of foam has poor temperature resistance, and once high temperature or fire occurs, it will melt and burn instantly, turning into ashes, losing its structure and heat insulation. [0003] Airgel is recognized by the industry as the new material with the best thermal insulation. Its thermal conductivity is 0.04w / m.k. In order to exert its heat insulation effect, the base material is usually an inorganic fiber product. Such as aluminum silicate fiber mat, pre-oxidized silk fiber, etc. Its production process is loaded down with trivial details, and material and processing cost are expensive. Contents of the in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/04C08K13/04C08K3/36C08K3/34C08K7/26C08K3/22C08K5/14C08K7/20C08K13/02C09K5/14
CPCC08K2003/2227C08K2201/006C08K2201/014C08L83/04C08L2203/20C08L2203/202C08L2205/025C08L2205/03C09K5/14C08K13/04C08K3/36C08K3/346C08K7/26C08K3/22C08K5/14C08K7/20C08K13/02C08K3/34
Inventor 郑亚森刘卫东吴奇明刘凯曹俊
Owner 常州市沃科科技有限公司
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