Radiation induced degradation of silica reinforced silicone foam: Experiments and modeling

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• 作者：Hui Fang^a ; ^d ; Jianguo Li^b ; Hongbin Chen^c ; Bo Liu^c ; Wei Huang^c ; ^{huangwei839@126.com} ; Yilun Liu^b ; ^{yilunliu@mail.xjtu.edu.cn} ; Tiejun Wang^b ; ^{wangtj@mail.xjtu.edu.cn}
• 关键词：Silica reinforced silicone foam ; Gamma radiation ; Crosslink generation ; Chain scission ; Cavity initiation
• 刊名：Mechanics of Materials
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：105
• 期：Complete
• 页码：148-156
• 全文大小：2973 K
• 卷排序：105

文摘

A series of uniaxial tension tests are performed for the gamma irradiated SRSF with γ-radiation dose from 0 to 600 kGy. The tensile modulus of SRSF increases with the increase of radiation dose, while the fracture strength and fracture strain generally decrease. The alternation of mechanical properties mainly comes from the evolution of polymer network. A constitutive relation of irradiated SRSF is proposed by incorporating the radiation induced polymer network evolution.