辐照POE和POE/EPDM/SR体系俘陷自由基的研究  

ESR spin-label study of mobility of the free radicals in POE and POE/EPDM/SR after irradiation

作　　者：丁振刚[1] 何涛 朱冬杰 李斌 王雪松 张臻麒[1] 贾少晋[1] 江平开[4] 

机构地区：[1]上海大学化学工程与化学工艺系,上海200444 [2]中国电器科学院,广州510300 [3]江苏上上电缆集团,溧阳213300 [4]上海交通大学上海市电气绝缘与热老化重点实验室,上海200240

出　　处：《辐射研究与辐射工艺学报》2013年第3期61-64,共4页Journal of Radiation Research and Radiation Processing

摘　　要：通过共混制备POE(聚烯烃弹性体/乙烯-辛烯共聚物)/EPDM(三元乙丙橡胶)/SR(硅橡胶),用电子顺磁共振波谱(ESR)研究辐照POE和POE/EPDM/SR俘陷自由基与温度、吸收剂量、共混体系的关系。结果表明:在温度为363K时烷基自由基信号最强;受到一定剂量辐照后,共混物体系比POE俘陷自由基的信号清晰,结晶与非结晶界面变得复杂,从而使得俘陷自由基的数量和类型增加,信号变得明显而多重。Ethylene-octane copolymer（POE）samples exposed to radiation under a series of doses were investigated using electron spin resonance spectroscopy（ESR）, The mobility of the free radicals wasrestricted inthe crystalline phase, The captive free radical was observed in radiation POE from 273 K to 373 K and the intensity of free radicals showed the strongest signal around the melt temperature, However, the temperature dependence of the ESR signal intensity was interesting and needs further investigation,

关 键 词：POE 电子顺磁共振波谱 俘陷自由基 辐照 

分 类 号：TL13[核科学技术—核能科学]