| 摘要 |
<p>A silicone rubber composition for extrusion molding applications having a high cure rate and providing silicone rubber extrusion moldings that post-cure and are either free of bubbles or contain bubbles to limited extent. The silicone rubber composition includes (A) 100 weight parts of a silicone rubber base compound containing (a-1) a diorganopolysiloxane gum, (a-2) reinforcing silica, and (a-3)a silanol-endblocked organosiloxane oligomer or hexaorganodisilazane; and (B) 0.1 to 10 weight parts of an organoperoxide with the formula R - COOOCOO - R<1> - OOCOOOC - R where R is an alkyl group, an alkoxy group, the group -SiR<2>3, the group -CH2SiR<2>3, or the group -Ph-R<3>c where R<2> is an alkyl or alkoxy group, Ph is phenylene, R<3> is an alkyl group, an alkoxy group, the group -SiR<2>3, or the group -CH2SiR<2>3; c is 0 to 3, and R<1> is a C1 to C10 alkylene group.</p> |
