防辐射含钆有机玻璃的断裂韧性研究  

Research on fracture toughness of radiation-shielding Gd^(3+)-containing organic glass

作　　者：刘子海[1] 严长浩[1] 宋佳[2] 胡丽敏[1] 王春宏[1] 王志峰[1] 张明[1] 

机构地区：[1]扬州大学化学化工学院,江苏扬州225002 [2]扬州大学机械工程学院,江苏扬州225127

出　　处：《功能材料》2015年第8期8055-8058,8062,共5页Journal of Functional Materials

基　　金：国防基础科研计划基金对本项目的大力支持

摘　　要：利用紧凑拉伸实验方法,测定含钆有机玻璃的平面应变断裂韧性KIC,并对紧凑拉伸试样的断面形貌进行分析。利用环境扫描电子显微镜原位拉伸测试技术,分析含钆有机玻璃在拉伸应力下的断裂过程,认为用裂尖银纹-裂纹模型和次级破裂模型分别解释含钆有机玻璃的慢速裂纹扩展和快速裂纹扩展过程是合适的。The plane-strain fracture toughness KICof Gd3 +-containing organic glass was investigated from the compact tension test,and the fractographs of compact tension specimen on the fracture surfaces was analysed. The fracture process under tensile stress of Gd3 +-containing organic glass has been examined via in situ environmental scanning electron microscopy( ESEM). We are convinced that crack-craze model on crack tip for slow crack growth and secondary fracture model for fast crack growth of Gd3 +-containing organic glass may be used to explain all phenomenons which were observed in this experiments.

关 键 词：含钆有机玻璃 紧凑拉伸 断裂韧性 断裂机理 

分 类 号：TQ324[化学工程—合成树脂塑料工业]