Preparation and characterization of novel UV-curing silicone rubber via thiol-ene reaction

Abstract A novel type of UV-curing silicone rubber was prepared via thiol-ene click reaction by using high-molecular-weight polydimethylsiloxane containing vinyl groups as the gum, polymercaptopropylmethylsiloxane as crosslinker, TS-530 SiO 2 as reinforcing filler and 2,2-dimethoxy-2-phenylacetophenone as photoinitiator. The obtained UV-curing silicone rubbers were transparent. The thermomechanical properties of resulting silicone rubbers were studied using dynamic mechanical analysis (DMA). Meanwhile, the mechanical property and thermal stability of the silicone rubber were also determined. Experimental results showed that the thiol-ene click reaction can be used as the alternative curing system to prepare the silicone rubber.