Thermally conductive and insulating room temperature curing silicone rubber

A room temperature curing, heat conduction and insulation technology, applied in the field of rubber, can solve the problems of insufficient comprehensive performance of heat conduction and insulation rubber, and achieve excellent anti-settling performance, improved thermal conductivity, low mechanical properties and low insulation properties

Inactive Publication Date: 2019-01-15
中绿新材料(江苏)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a thermally conductive insulating room temperature curing silicone rubber to solve the problem of insufficient comprehensive performance of the existing thermally conductive insulating rubber proposed in the above background technology

Method used

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Embodiment Construction

[0009] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the preparation process in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0010] The invention provides a technical solution: a heat-conducting insulating room-temperature-curing silicone rubber, including α, ω-terminated hydroxyl polydimethylsiloxane as a matrix, tetramethoxysilane as a crosslinking agent, and Al2O3 as a main heat-conducting filler , AlN and SiC are auxiliary thermally conductive fillers, ZnO, nano-TiO2, nano-SiO2 and nano-Al2O3 are anti-settling additives, and hydroxyl silicone oil with a viscosity of 100...

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Abstract

The invention discloses thermally conductive and insulating room temperature curing silicone rubber. According to the invention, alpha, omega-Hydroxyl terminated polydimethylsiloxane is used as a matrix, tetramethoxysilane is used as a cross-linking agent, Al2O3 is used as a main thermal conductive filler, AlN and SiC are used as auxiliary thermal conductive fillers, ZnO, nano-TiO2, nano-SiO2 andnano-Al2O3 are used as anti-settling additives, hydroxy silicone oil with viscosity of 1000mPa-s is suitable to be used as base silicone oil; tetramethoxysilane is used as a cross-linking agent, and the suitable use amount is 6 parts; dibutyltin diacetate and dibutyltin diacetylacetonate can be used as a catalyst, and the suitable use amount of dibutyltin diacetate is 0.3 wt%. When the filling amount of the thermally conductive and insulating room temperature curing silicone rubber is 8 wt%, 0.8 wt%, 0.8 wt% and 0.5 wt% respectively, the anti-settling performance of the silicone rubber is excellent, thermal conductivity of the silicon rubber can be raised to some extent, and the mechanical properties and insulating property are little influenced. The phenyl silicone oil and the hydroxy silicone oil are mixed according to a certain ratio as the base silicone oil to study the heat resistance of a pure silicone rubber matrix.

Description

technical field [0001] The invention relates to the technical field of rubber, in particular to a heat-conducting and insulating room temperature curing silicone rubber. Background technique [0002] With the development of the electronics industry, electronic components and integrated circuits tend to be integrated and miniaturized, and higher requirements are placed on the thermal conductivity and insulation properties of silicone rubber. It is urgent to develop a silicon rubber with excellent comprehensive properties such as thermal conductivity and insulation. rubber material. Contents of the invention [0003] The purpose of the present invention is to provide a heat-conducting insulating room temperature curing silicone rubber to solve the problem of insufficient comprehensive performance of the existing heat-conducting insulating rubber proposed in the above-mentioned background technology. [0004] In order to achieve the above object, the present invention provid...

Claims

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Application Information

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IPC IPC(8): C08L83/06C08L83/04C08L67/00C08K13/02C08K5/5415C08K3/22C08K3/28C08K3/34C08K3/36C09K5/14
CPCC08L83/06C08K2003/2227C08K2003/2241C08K2003/2296C08K2003/282C08K2201/011C08L83/04C08L2201/08C08L2205/02C08L2205/03C08L2205/16C09K5/14C08L67/00C08K13/02C08K5/5415C08K3/22C08K3/28C08K3/34C08K3/36
Inventor 詹浩
Owner 中绿新材料(江苏)有限公司
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