Thermal Oxidation Resistance of Rare Earth-Containing Composite Elastomer  

作　　者：邱关明 张明 周兰香 中北里志 井上真一 冈本弘 

出　　处：《Journal of Rare Earths》2001年第3期192-197,共6页稀土学报（英文版）

基　　金：InternationalCooperationFoundationofJiangsuProvince

摘　　要：The rare earth-containing composite elastomer was obtained by the reaction of vinyl pyridine-SBR (PSBR) latex with rare earth alkoxides, and its thermal oxidation resistance was studied. After aging test, it is found that its retention rate of mechanical properties is far higher than that of the control sample. The results of thermogravimetric analysis show that its thermal-decomposing temperature rises largely. The analysis of oxidation mechanisms indicates that the main reasons for thermal oxidation resistance are that rare earth elements are of the utility to discontinue autoxidation chain reaction and that the formed complex structure has steric hindrance effect on oxidation.The rare earth-containing composite elastomer was obtained by the reaction of vinyl pyridine-SBR (PSBR) latex with rare earth alkoxides, and its thermal oxidation resistance was studied. After aging test, it is found that its retention rate of mechanical properties is far higher than that of the control sample. The results of thermogravimetric analysis show that its thermal-decomposing temperature rises largely. The analysis of oxidation mechanisms indicates that the main reasons for thermal oxidation resistance are that rare earth elements are of the utility to discontinue autoxidation chain reaction and that the formed complex structure has steric hindrance effect on oxidation.

关 键 词：rare earths composite elastomer thermal oxidation resistance discontinue autoxidation steric structure 

分 类 号：TQ334[化学工程—橡胶工业]