Molecule structure and glass transition temperature of raw rubber of the new nitrile rubber(NBR)40 H by hot polymerization,and Mooney vis-cosity and curing characteristics of the compound,as well as thermal-oxidative aging resistance and oil re-sistance of the vulcanizates,were studied and com-pared with the traditional hot polymerized product NBR 3604.The results showed that the molecule structure of NBR 40 H was not significantly different from that of NBR 3604,both had similar glass tran-sition temperatures and processing properties,and the mechanical property retention rates after ther-mal-oxidative aging and immersed in standard refe-rence oil were also similar.NBR 40 H could replace NBR 3604.
关键词
热法聚合/丁腈橡胶/分子结构/标准参比油/耐热氧老化性能/耐油性能
Key words
hot polymerization/nitrile rubber/molecule structure/standard reference oil/thermal-oxidative aging resistance/oil resistance
万方数据