Effect of 200 keV proton irradiation on the properties of methyl silicone rubber |
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| Institution: | 1. Department of Applied Chemistry, Xi''an University of Technology, No. 5 South Jinhua Road, Xi''an, Shaanxi 710048, PR China;2. Department of Chemistry and Biochemistry, Center for Nanoscience Research (CENR), Concordia University, 7141 Sherbrooke St. West, Montreal, Quebec H4B 1R6, Canada;3. Frontier Institute of Science and Technology (FIST), Xi''an Jiaotong University, No. 99 Yanxiang Road, Xi''an, Shaanxi 710054, PR China |
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| Abstract: | The effects of 200 keV proton irradiation on methyl silicone rubber were studied. The changes in surface morphology, mechanical properties, cross-linking density, glass transition temperature, infrared attenuated total reflection spectrum and mass spectrum indicated that, at lower fluence, the proton irradiation induced cross-linking, resulting in an increase in tensile strength and hardness of the methyl silicone rubber. However, at higher proton fluence, radiation-induced degradation, which decreased the tensile strength and hardness, became dominant. A macromolecular-network destruction model for silicone rubber irradiated with protons was proposed. |
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