Moldable silicone rubber sponge composition, silicone rubber sponge, and method for producing silicone rubber sponge

摘要

A moldable silicone rubber sponge composition comprising (A) 100 weight parts silicone rubber base compound with a Williams plasticity at 25 DEG C of 50 to 600 comprising (a) 100 weight parts diorganopolysiloxane gum that contains at least 2 alkenyl groups in each molecule and (b) 1 to 120 weight parts wet-process silica, (B) 0.01 to 50 weight parts hollow gas-containing thermoplastic resin powder, and (C) curing agent in an amount sufficient to effect curing of the composition. The invention is further a silicone rubber sponge afforded by the thermosetting of the above-defined moldable silicone rubber sponge composition and a method for producing the silicone rubber sponge.