动态硫化法制备SBR/PP共混物的研究  

Study on SBR/PP blend prepared with dynamic vulcanization

作　　者：郭红革[1] 邵长虹[1] 谷勤翠[1] 傅政 潘炯玺[1] 

机构地区：[1]青岛化工学院高分子工程材料研究所,山东青岛266042

出　　处：《橡胶工业》2000年第9期520-524,共5页China Rubber Industry

摘　　要：采用动态硫化技术 ,在双辊开炼机上制备SBR/PP共混物 ,并研究不同硫化体系、共混比、混炼时间、炭黑用量、环烷油用量和流动助剂用量对共混物力学性能的影响。结果表明 :选用低结晶度且熔融指数小的PP与SBR共混 ,采用半有效硫化体系 ,橡塑比为 70 / 30～ 60 / 4 0 ,共混时间为 9min时 ,共混物综合力学性能较好。通过正交试验设计得出 :炭黑用量增大 ,共混物的拉伸强度、硬度增大而扯断伸长率降低 ;环烷油、流动助剂用量对共混物力学性能的影响趋势与炭黑相反。The SBR/PP blend was prepared with the dynamic vulcanization on a two roll mill.The influence of different curing systems,blending ratios,mixing cycle times,carbon black levels,naphthenic oil levels,and fluid agent levels on the physical properties of blend was investigated.The results showed that the better physical properties of blend were obtained by using PP with low crystallinity and melt index,semi efficient curing system,70/30～60/40 SBR/PP blending ratio and mixing cycle for 9 min.It was found through orthogonal experimental design that the tensile strength and hardness of blend increased,and the elongation at break decreased as the level of carbon black increased;and the naphthenic oil and fluid agent showed an adverse effect trend on the physical properties when compared with carbon black.

关 键 词：SBR PP 共混物 动态硫化 聚现烯 热塑性弹性体 

分 类 号：TQ330[化学工程—橡胶工业]