| abstract |
An invention of a heat-dissipating grease composition characterized by comprising of the following components (A)-(C) is disclosed.n Component (A): 100 mass parts of organopolysiloxane wherein a thixotropicity degree α is 1.03-1.50, a viscosity is 100-1,000,000 mPa·s at 25° C.; in this regard, the thixotropicity degree α is η 1 /η 2 . Herein, η 1 is a measured viscosity at 25° C. measured by a B type rotation viscometer at 6 rpm of a rotor, η 2 is a measured viscosity at 25° C. measured by a B type rotation viscometer at 12 rpm of the rotor. Component (B): 5-200 mass parts of hydrolysable organopolysiloxane having three functional groups at one end represented by the following general formula (1); nn n n n n n n n n n R 1 in the formula is an alkyl group having 1-6 carbon atoms, R 2 is at least one kind of groups having 1-18 carbon atoms selected from a group consisting of substituted or unsubstituted monovalent hydrocarbon groups, a is an integer of 5-120.n Component (C): 200-4,000 mass parts of a thermoconductive inorganic filler having an average particle diameter of 0.1-100 μm and 0.01-50 m 2 /g of a specific surface. |