Study on the properties of Nano-TiO2 reinforced phenyl silicone rubber composites

Abstract In this paper, phenyl silicone rubber (PVMQ) containing 10% and 20% phenyl groups was synthesized. Nano titanium dioxide (nano-TiO 2 ) was added to prepare the composite materials. The PVMQ/TiO 2 composites reveal good mechanical properties, dynamic thermodynamic properties, and radiation resistance. The research indicates that under the double protection of phenyl and functional filler, the radiation resistance of silicone rubber is greatly improved and the degree of improvement of the radiation resistance of the material by phenyl is higher than that of the filler. There is an optimal value where the phenyl content is 20% and 5 phr TiO 2 was added. After 300kGy gamma irradiation, the tensile strength of the composite is 7.6 MPa and the retention rate is 98.70%. This work provides new ideas for the research and development of phenyl silicone rubber materials used in high-irradiation environments.