Silicone rubber composition and method for the preparation thereof

摘要

A silicone rubber composition that cures into a highly flame-retardant silicone rubber with excellent electrical insulation characteristics and that does so without sacrificing mechanical strength. The silicone rubber composition comprises: (A) polyorganosiloxane described by average formula RaSiO(4-a)/, where R denotes substituted and unsubstituted monovalent hydrocarbon groups and a is a number from 1.95 to 2.05 and having at least 2 silicon-bonded alkenyl groups in each molecule; (B) microparticulate silica; (C) the reaction mixture of (a) a platinum compound and (b) a compound containing a carbon-carbon double bond and a carbon-carbon triple bond; (D) curing agent, and optionally (E) a triazole compound.