High-thermal-conductivity silicone rubber laminar composite

Abstract

The invention discloses a high-thermal-conductivity silicone rubber laminar composite. The high-thermal-conductivity silicone rubber laminar composite comprises an interlayer and outer layers laminated on the two surfaces of the interlayer. The interlayer is a resin-based composite layer and is prepared from a resin-based composite in a compression molding mode. The resin-based composite is prepared from, by weight, 0.1-5 parts of graphene, 2-10 parts of adhesive, 10-50 parts of graphite and 35-93.5 parts of base resin. The graphene and the graphite are coordinated to form an independent heat conducting network in the resin-based composite layer. The outer layers are silicone rubber layers formed by curing a heat conducting silicone rubber composition, and the heat conducting silicone rubber composition is prepared from, by weight, 30-60 parts of methyl vinyl silicone rubber, 15-20 parts of polyamide resin, 3-6 parts of fumed silica, 1-3 parts of boron nitride, 0.05-0.1 part of platinum catalyst and 1.5-2 parts of cross-linking agent. The laminar composite is good in heat conducting performance and excellent in mechanical performance.

Description

[0001] Technical field: [0002] The invention relates to the technical field of composite materials, in particular to a layered composite material of high thermal conductivity silicone rubber. [0003] Background technique: [0004] Thermally conductive materials are widely used in various fields of national defense industry and national economy. Traditional thermal conductive materials are mostly metals such as gold, silver, copper, aluminum, magnesium, etc., metal oxides such as aluminum oxide, magnesium oxide, beryllium oxide, zinc oxide, nickel oxide, etc., metal nitrides such as aluminum nitride, silicon nitride, Boron nitride, etc. and other non-metallic materials such as graphite, carbon black, etc. The rapid development of industrial production and science and technology has put forward newer and higher requirements for thermal conductive materials. In addition to thermal conductivity, it is hoped that the material has excellent comprehensive properties such as light ...

AI Technical Summary

Problems solved by technology

[0007] Silicone rubber has excellent properties such as high and low temperature resistance, weather resistance, ozone resistance, arc resistance, electrical insulation, chemical resistance, high air permeability and physiological inertness. The miniaturization of the silicone rubber has higher and higher requirements on the thermal conductivity of the silicone rubber. The traditional silicone rubber material can no longer meet the heat dissipation requirements and needs to be modified.