文献类型：期刊文献

中文题名：三元乙丙橡胶/聚丙烯动态硫化热塑性弹性体的相态结构

英文题名：Morphological structure of dynamically vulcanized thermoplastic elastomer of ethylene propylene diene monomer/polypropylene

作者：沈军[1];唐颂超[1];刘永[1];王庆海[1]

机构：[1]华东理工大学材料科学与工程学院超细材料制备与应用教育部重点实验室,上海200237

年份：2006

卷号：29

期号：5

起止页码：356

中文期刊名：合成橡胶工业

外文期刊名：China Synthetic Rubber Industry

收录：CSTPCD;;Scopus;北大核心:【北大核心2004】；CSCD:【CSCD_E2011_2012】；

语种：中文

中文关键词：三元乙丙橡胶;聚丙烯;热塑性弹性体;动态硫化;共混;相态结构

外文关键词：ethylene propylene diene monomer; polypropylene; thermoplastic elastomer; dynamic vulcanization; blending ; morphological structure

摘要：用扫描电镜研究了三元乙丙橡胶(EPDM)聚/丙烯(PP)动态硫化热塑性弹性体(TPV)相态结构的形成过程,探讨了交联密度、制备工艺、螺杆转速对EPDM/PP TPV相态结构的影响。结果表明,采用以酚醛树脂为硫化剂的动态硫化工艺制备的EPDM/PP TPV,其相态结构实现了由EPDM和PP组成的双连续相到以EPDM为分散相、PP为连续相的转变;当硫化剂用量为7份时,橡胶相硫化速率和交联密度最大;当螺杆转速为180 r/m in时,反应性挤出工艺较之密炼机工艺制备的EPDM/PP TPV的橡胶粒子更细小、分散更均匀。
The morphological structure of dynamically vulcanized thermoplastic elastomer（TPV） ethylene propylene diene monomer （EPDM）/polypropylene（PP） was investigated with scanning electron microscope. The effect of the crosslinking density of rubber phase, the preparation technology of TPV and extruder screw speed on the morphological structure of EPDM/PP TPV were discussed. The results showed that morphological structure got transformation from both continuous phase of EPDM and PP to two-phase which EPDM particles were dispersed in PP matrix when EPDM/PP TPV was prepared by using phenol formaldehyde resin as vulcanizator. The curing rate and crosslinking density of rubber phase were the highest when 7 phr vulcanizator was added, the rubber particles of the TPV were smaller and more uniform when TPV prepared with reaction extrusion at 180 r/min of screw rotating rate other than that with internal mixer.