| abstract |
(57) Abstract: A heat-conductive and electrically-insulating silicone rubber having high thermal conductivity by adding particles having electrical insulation to the surface of conductive particles by adding the particles to silicone rubber or silicone gel. The composition and the thermally conductive and electrically insulating silicone gel composition are provided at low cost. SOLUTION: Based on 100 parts by weight of silicone rubber or gel, 5-200 parts by weight of particles having an average particle diameter of 1-100 μm obtained by coating the surface of conductive particles with electric insulation, and a basic metal compound, Material, and particles having at least one volume resistivity value of at least 10 6 Ωcm selected from carbides 0 parts by weight, reinforcing agent: 0-500 parts by weight, platinum compound: 0- It is a compound having a composition ratio of 10 parts by weight and a vulcanizing agent: 0.5 to 20 parts by weight, and the heat conductivity of the molded body after vulcanization is 0.1%. A silicone rubber or gel composition having a resistivity of 4 W / m · K or more and a volume resistivity of 10 9 Ω · cm or more. |