| abstract |
The present invention relates to a silicone rubber capable of bonding with fluororubber, and a rubber composite layer containing the same. The silicone rubber is obtained by kneading the following raw material composition, then heating up and kneading; the raw material composition includes raw rubber components, hydroxy silicone oil, silica, anti-yellowing agent, binding aid and anti-yellowing agent. Thermal agent; the raw rubber component includes a vinyl-terminated first polysiloxane with a vinyl content of 0.02-0.04 wt % and all side chains of which are methyl groups, and ethylene with a vinyl content of 0.20-0.24 wt % A second polysiloxane terminated by a group and containing a vinyl group in a side chain, and a third polysiloxane terminated by a vinyl group and containing a vinyl group in a side chain with a vinyl content of 2.8 to 3.2 wt %. The silicone rubber provided by the present invention can be cross-linked and bonded with the fluororubber during the vulcanization process, and at the same time, a good cross-linked network can be formed by itself to improve the tear resistance; in addition, an appropriate amount of silica and hydroxy silicone oil can control the silicone rubber. hardness and improve its bonding properties. |