▎ 摘　　要

NOVELTY - A heat-conductive silicone heat radiation material comprises a silicone polymer which is a matrix resin, a heat-conductive inorganic filler, and a heat-resistance improver. The thermally conductive inorganic filler has specific surface area (ABET) of greater than or equal to 0.3 m2/g and is surface-treated by surface treating agent, and heat-conductive inorganic filler having ABET of less than or equal to 0.3 m2/g. The amount of heat-conductive inorganic filler is 100-10000 mass parts with respect to 100 mass parts silicone polymer of the matrix resin. USE - A heat-conductive silicone heat radiation material used as thermal interface material between heating portion of electric/electronic component and heat sink. ADVANTAGE - Heat resistance and thermal conductivity can be improved. DETAILED DESCRIPTION - A heat-conductive silicone heat radiation material comprises a silicone polymer which is a matrix resin, a heat-conductive inorganic filler, and a heat-resistance improver. The thermally conductive inorganic filler has specific surface area (ABET) of greater than or equal to 0.3 m2/g and is surface-treated by surface treating agent including Si(OR')4 or RxSi(OR')4x, and heat-conductive inorganic filler having ABET of less than or equal to 0.3 m2/g. The amount of heat-conductive inorganic filler is 100-10000 mass parts with respect to 100 mass parts silicone polymer of the matrix resin. R=1-4C hydrocarbon group or 6-12C aromatic hydrocarbon group; R'=1-4C hydrocarbon group; and x=1-2.