摘要
Hydrogenated nitrile rubber(HNBR)was prepared by selective hydrogenation of nitrile-butadiene rubber latex using hydrazine hydrate/hydrogen peroxide catalytic system,which effectively resolved the problems with environment pollution and high cost caused by noble metal catalyst via solution hydrogenation method.Because of the saturation of carbon-carbon double bonds after hydrogenation,HNBR presented excellent thermal-oxidative aging resistance.The thermaloxidative activation of HNBR prepared in situ was investigated by thermogravimetric analysis(TGA)and Flynn-Wall-Ozawa method.Meanwhile,the microstructure and mechanical properties of HNBR was studied during the thermal-oxidative aging process.The relationship between lifetime and aging temperature was evaluated as well as the thermal-oxidative aging coefficient of HNBR,which provided theoretical basis for the application of HNBR under the high temperature and in harsh environment.
使用乳液原位加氢法选择性氢化丁睛胶乳制备了氢化丁睛橡胶(HNBR),对其热氧老化性能进行了研究。主要运用热重分析(TGA)并结合Flynn-Wall-Ozawa法计算了热空气降解活化能,同时采用傅立叶变换衰减全反射红外光谱分析跟踪考察了HNBR在热氧老化过程中微观结构的变化。此外,通过对HNBR的物理机械性能的跟踪研究,计算了其老化温度系数及老化寿命与老化温度之间的关系,为HNBR在耐热领域中的应用提供理论依据。
出处
《合成橡胶工业》
CAS
北大核心
2020年第3期252-252,共1页
China Synthetic Rubber Industry
基金
Supported by Shandong Key Research and Development Plan(Military and Civilian Technology Integration)(2018JMRH0205).
作者简介
WANG Xiao-lei,doctoral student;WANG Chun-fu,To whom all correspondences should be addressed.
