Curable Silicone Rubber Composition

摘要

A curable silicone rubber composition comprises (A) an alkenyl-containing organopolysiloxane comprising (A-1) a dialkylpolysiloxane that has an average of at least two alkenyl groups in each molecule and (A-2) an alkenyl-containing, resin-form organopolysiloxane that comprises the SiO4/2 unit, R12R2SiO1/2 unit, and R13SiO1/2 unit wherein R1 is C1-10 alkyl and R2 is alkenyl and that contains the alkenyl group in the range from more than 2.5 mass % to not more than 5.0 mass %; (B) an organopolysiloxane that contains the silicon-bonded hydrogen atom; and (C) a hydrosilylation reaction catalyst in a catalytic quantity. The curable composition provides a cured silicone material that has a hardness of not more than 75 and an elongation of at least 35%. Also, a composite in which the cured silicone material provided by the thermosetting of the curable composition is integrated into a single article with a substrate.