锡偶联型溶聚丁苯橡胶的热稳定性  

Thermal stability of tin coupled solution polymerized styrene-butadiene rubber

作　　者：刘迪[1] 徐铭韩[1] 刘广永[1] 雍占福 LIU Di;XU Ming-han;LIU Guang-yong;YONG Zhan-fu(Key Laboratory of Rubber-plastics of Ministry of Education/Shandong Provincial Key Laboratory of Rubber-plastics,Qingdao University of Science and Technology,Qingdao 266042,China)

机构地区：[1]青岛科技大学橡塑材料与工程教育部重点实验室/山东省橡塑材料与工程重点实验室,山东青岛266042

出　　处：《合成橡胶工业》2020年第5期419-422,共4页China Synthetic Rubber Industry

基　　金：国家自然科学基金资助项目(51972185)。

摘　　要：考察了2种牌号充油锡偶联型溶聚丁苯橡胶(SSBR)生胶(NS 424和NS 560)的凝聚态结构与性能,并与充油非偶联型SSBR进行了对比。结果表明,与非偶联型SSBR相比,SSBR NS 424生胶的数均分子量和重均分子量均略小,而分子量分布相近,门尼黏度偏大,加工性能较差,弛豫时间较长;SSBR NS 560生胶的数均分子量和重均分子量均较小,分子量分布较窄,门尼黏度略大,热稳定性较好,弛豫时间较短。The condensed structure and properties of two kinds of oil extended tin coupled solution poly-merized styrene-butadiene rubber(SSBR)(NS 424 and NS 560)were investigated and compared with that of oil extended uncoupled SSBR.The results showed that compared with uncoupled SSBR,the number average molecular weight and weight average molecular weight of SSBR NS 424 were slightly smaller,but the molecular weight distribution was similar,the Mooney viscosity was higher,the processing performance was poor,and the relaxation time was longer.And the number average molecular weight and weight average molecular weight of SSBR NS 560 were smaller,the molecular weight distribution was narrow,the Mooney viscosity was slightly larger,the thermal stability was better,and the relaxation time was shorter.

关 键 词：锡偶联型溶聚丁苯橡胶 热稳定性 相对分子质量及其分布 门尼黏度 应力弛豫 

分 类 号：TQ333.1[化学工程—橡胶工业]