摘要
环氧树脂及其复合材料具有优异的力学强度、热稳定性、黏接性及电绝缘性,被广泛应用于核电站以及空间飞行器领域。工作环境中的高能辐射会导致环氧树脂发生交联和降解反应,使其微观结构遭到破坏,致使宏观性能下降,严重影响使用寿命。本文综述了环氧树脂在辐射老化过程中力学性能及热稳定性的变化规律;分析了高能辐射对环氧树脂的交联网络和链段松弛行为的影响;重点介绍了辐射诱导分解产物及形成机理;结合环氧树脂辐射老化的研究现状,对未来的研究方向进行展望。
Epoxy resin and its composites are widely employed in nuclear power plants and space vehicles owing to their superior mechanical strength,thermal stability,adhesion,and electrical insulation properties.Epoxy resins are exposed to high.energy radiations,which cause crosslinking and degradation reactions,resulting in the deterioration of microstructures and macroscopic properties.These performance degradations significantly affect the service life of the epoxy.In this study,the variations in mechanical property and thermal stability of epoxy resin under high-energy radiations are investigated.The influence of high-energy radiations on the crosslinking networks and segmental relaxation behaviors,including the radiolysis products and formation mechanism,is analyzed.Furthermore,the future research diretions of epoxy resin radiation aging are prospected.
作者
陈可平
刘文
赵秀丽
汪小琳
CHEN Keping;LIUWen;ZHAO Xiuli;WANG Xiaolin(Institute of Chemical Materials,China Academy of Engineering Physics,Mianyang 621999,China;China Academy of Engineering Physics,Mianyang 621999,China)
出处
《辐射研究与辐射工艺学报》
CAS
CSCD
2022年第1期1-12,共12页
Journal of Radiation Research and Radiation Processing
基金
国家自然科学基金项目(51903228)资助。
关键词
环氧树脂
交联与降解
辐射老化
Epoxy resin
Crosslinking anddegradation
Radiation aging
