对-叔丁基杯[4]芳烃对聚丙烯γ辐射降解的稳定化效应  

THE EFFECT OF pTERTBUTYLCALIXARENE ON RADIATION DEGRADIATION OF POLYPROPYLENE

作　　者：袁立华[1,2] 冯文[1,2] 郑时有[1,2] 黄光琳[1,2] 

机构地区：[1]四川联合大学化学系 [2]化工部晨光化工研究院

出　　处：《辐射研究与辐射工艺学报》1997年第4期217-223,共7页Journal of Radiation Research and Radiation Processing

基　　金：核工业科学基金;辐射物理及技术开放实验室基金

摘　　要：研究了在室温下，真空或空气条件下γ射线对添加对叔丁基杯［４］芳烃（ＣＡ［４］）的聚丙烯的辐射效应，同时与加有２，６二叔丁基对甲酚（ＢＨＴ）和未加添加剂的聚丙烯对照。由辐照前后聚合物的力学性能、热性质及红外光谱的变化表明，在辐照过程中和辐照后，ＣＡ［４］对聚丙烯都具有稳定化作用，剂量较高时，稳定化效果更为显著。此外，ＥＳＲ实验证实，ＣＡ［４］分子在辐照下产生稳定自由基。在剂量率６５×１０３Ｇｙ／ｈ，剂量１０００ｋＧｙ，未检测到ＣＡ［４］的分解碎片，表明杯环具有较高的抗辐射稳定性。Polypropylene(PP) containing cyclic phenolic antioxidant, ptertbutylcalix arene as additive was irradiated with γray in air or in vacuum at ambient temperature The mechanical properties, variation of IR spectra and decomposition temperature by thermal analysis were mearsured for the irradiated PP sheets Compared with BHT, ptertbutylcalixarene showed radiation stabilization towards PP during and after irradiation, especially at a high dose By means of ESR spectra and other spectra the formation of the stable calixarene radical was confirmed No decomposition species of the calixarene was observed with the dose≤1000 kGy and the dose rate of 65×103kGy/h indicating the higher radiationresistance of the calixarene structure

关 键 词：杯芳烃 聚丙烯 Γ辐照 力学性能 辐射降解 

分 类 号：O631.34[理学—高分子化学] O632.12[理学—化学]