聚乙烯-丁烯橡胶及热塑性动态硫化弹性体的制备  

Preparation of polyethylenebutene rubber and thermoplastic dynamic vulcanized elastomer

作　　者：郭灵 罗毅 邢立江 张建国[1] 丁辉 GUO Ling;LUO Yi;XING Lijiang;ZHANG Jianguo;DING Hui(Rubber Department of Hunan Petrochemical Company,Yueyang 414014,China;Anhuei Xiongya Plastic Technology Co.,Ltd.,Chuzhou 239000,China)

机构地区：[1]湖南石油化工公司橡胶部,湖南岳阳414014 [2]安徽雄亚塑胶科技有限公司,安徵滁州239000

出　　处：《弹性体》2024年第6期44-48,64,共6页China Elastomerics

摘　　要：研究了用丁基锂的环已烷溶液将丁二烯进行溶液聚合、再经选择性氢化制得聚乙烯-丁烯橡胶(PEBR);将PEBR与聚丙烯共混采用动态硫化法制备了热塑性动态硫化弹性体(TPV)。结果表明:适宜的PEBR碘值为9~12 g/100 g、结晶温度在29~34℃、门尼黏度为65~75、相对平均分子质量分布指数为1.8~2.2条件下,制备的TPV具有压缩变形低、耐低温和良好的抗热老化性能,综合物理机械性能可与现有的三元乙丙橡胶相媲美。The solution polymerization of butadiene using cyclohexane solution of butyl lithium is investigated,followed by selective hydrogenation to produce polyethylene butadiene rubber(PEBR);Thermoplastic dynamically vulcanized elastomers(TPVs) were prepared by blending PEBR with polypropylene using dynamic vulcanization method.The results showed that the suitable PEBR iodine value was 9~12 g/100 g,crystallization temperature was between 29~34 degrees,Mooney viscosity was between 65 and 75,and M_w/M_(n) was between 1.8 and 2.2.The prepared TPV exhibited low compression deformation,low temperature resistance,and good heat aging resistance.Its comprehensive physical and mechanical properties were comparable to existing EPDM rubber.

关 键 词：丁二烯 选择性聚合和氢化 聚乙烯-丁烯橡胶 结晶温度 热塑性动态硫化弹性体 

分 类 号：TQ334.7[化学工程—橡胶工业]