Abstract:

The solution intercalation method was used to prepare the expanded graphite／VMQ thermally conductive composites. Carbon fiber was added to improve the mechanical properties and the effects of EG, CF and titanate coupling agents on thermal conductivity and mechanical properties of silicone rubber were studied. It was found that there was better collaborative effect between CF and EG, and the polymerfiller interactions could be improved by adding certain content titanate coupling agents. Compared with EG／VMQ composites, CF／EG／VMQ composites showed higher thermal conductivity and mechanical properties.

Key words: silicone rubber, expanded graphite(EG), carbon fiber (CF), themal conductivity