γ-ray irradiation effect on siloxane foam containning phenyl

γ -ray irradiation effect on siloxane foam containning phenyl 1 first-author 1 1 1 1 Institute of Nuclear Physics and Chemistry, CAEP. Mianyang 621900 Institute of Nuclear Physics and Chemistry, CAEP. Mianyang 621900 The 60 Co γ radiation effect on spherical open-porous polymethylphenylvinyl siloxane foam was studied in different atmospheres at room temperature. The physical and chemical behaviors of unirradiated and irradiated materials were studied by SEM, FTIR, TG (thermal gravity analysis), GC/MS(gas chromatography and mass spectroscopy), etc. The present results indicate that the yields of gas products increase linearly with the dose increasing, Furthermore, some changes in material's microscopic form, composition, structure and mechanical property were observed, but the maximum thermal decomposition temperature of the sample alters little and the dose gives no effect on it. Polymethylphenylvinyl siloxane foam γ-ray irradiation Radiation crosslinking Radiation degradation References Seguchi T , Hashimoto S , Arakawa K et al . Radiat Phys Chem , 1981 , 17 ( 2 ): 195 〜 201 Radiat Phys Chem Gillen K T , Clough R L. Polym Prep . 1990 , 31 ( 2 ): 387 - 341 Polym Prep Hanisch F , Maier P , Okada S et al . Radiat Phys Chem , 1987 , 30 ( 1 ): 1 - 9 Radiat Phys Chem Huang W , Fu Y B Wang G Y et al . J Radiat Res Radiat Proces (in Chinese) . 2001 . 19 ( 2 ): 99 〜 104 J Radiat Res Radiat Proces (in Chinese) O644.2, TQ316 Supported by the China Academy of Engineering Physics (CAEP Project No. 1999Z0503) 2001-01-16 2001-08-01 2021-02-05 2001 Nuclear Science and Techniques 3 12