| 摘要 |
PURPOSE:To provide a silicone grease composition containing a specific polyorganosiloxane and boron nitride at a specific ratio and having excellent thermal conductivity and electrical insulation. CONSTITUTION:The objective grease composition is composed of (A) 100pts.(wt.) of the polyorganosiloxane of formula [R<1> is 1-12C alkyl, alkenyl or (substituted) aryl; a is 1.1-2.7; n is integer] and (B) 50-1,000pts. (preferably 66-1,000pts.) of boron nitride having a particle diameter of preferably 0.01-100mum. The viscosity of the component A is preferably 30-500,000 cst (especially 50-100,000 cst) at 25 deg.C. USE:The grease is used for the heat-dissipation of a heat-generating element (among various electrical and electronic elements to be integrated in electrical and electronic apparatuses) in the fixing of the element to an apparatus. |
