The curing characteristics of unvulcanized filled silicone rubber were investigated by a Dynamic Me chanical Thermal Analyzer (DMTA) called RSA3 instead of curemeters. The influence of curing agent type on the cu ring characteristics of silicone rubber when choosing polyvinylsilicone oil, namely C gum, as concentrative crosslinker were studied. And the differences of crosslink reactions of rubber with three different curing agents were also dis cussed. The results show that benzoyl peroxide (BPO) can爷t well cure silicone rubber with C gum. While the di cumyl peroxide (DCP), one vinyl鄄specific curing agent, can well cure silicone rubber with C gum. The best cure
effect in the presence of concentrative crosslinking of silicone rubber of this research is a combination of DCP and BPO. The silicone rubber cured with the combination of BPO and DCP have high modulus, and the rubber can be cured by two cure stages of low and high cure temperature without cure reactions rate decreasing.