| 摘要 |
PURPOSE:To provide the subject composition having heat dissipation properties equivalent to those of conventional heat-conductive silicone rubbers and having flame retardancy on the UL94V-0 level. CONSTITUTION:The objective process for producing a heat-conductive silicone rubber composition comprises: using an organopolysiloxane (A) represented by the average compositional formula: RnSiO(4-n)/2 (wherein R is an (un) substituted monovalent hydrocarbon group, and (n) is a positive number of 1.95-2.05) and having an average degree of polymerization of 300 or above, aluminum hydroxide (B) having a mean particle diameter of 10mum or below, at least one heat conductive filler (C) selected from among aluminum oxide, boron nitride and aluminum nitride, platinum or its compound (D) and a curing agent (E), components A and B are mixed together and heated to 100-200 deg.C, components C, D and E are added to the obtained mixture, and the resulting mixture is agitated without heating. |
