降解PP/EPDM共混物的结晶性能研究  

Study on crystallization properties of degraded polypropylene/EPDM polymer blends

作　　者：李海东[1] 刘熙旸[1] 韩春来[2] 程凤梅[1] 

机构地区：[1]长春工业大学化学工程学院,吉林长春130012 [2]中国石油抚顺石化公司,辽宁抚顺113004

出　　处：《弹性体》2012年第5期42-45,共4页China Elastomerics

摘　　要：采用过氧化二异丙苯(DCP)降解聚丙烯(PP),熔融法制备了降解PP与三元乙丙橡胶(EPDM)共混物,采用差示扫描量热分析(DSC)及广角X射线衍射(WAXD)研究了降解PP/EPDM共混物的结晶行为,结果发现PP降解后β-PP晶型(300)消失;降解PP/EPDM共混物的非等温结晶过程是由成核控制的,并伴有明显的快速初级结晶和缓慢的次级结晶过程,降解PP以均相成核的三维球晶方式生长。The dicumyl peroxide was used to degrade PP and prepared degrade PP/EPDM blends via a melting process. Studied on crystallization behavior of degraded PP/EPDM polymer blends by DSC and WAXD process. The result showed that β-PP disappeared of degrade PP, the isothermal crys-tallization process of degraded PP/EPDM blends is controlled by into nuclear,and with significant fast primary crystallization and slow subprime crystallization process, degraded PP spherulite grows by three-dimensional way.

关 键 词：过氧化二异丙苯 聚丙烯 三元乙丙橡胶 降解 结晶 

分 类 号：TQ333.4[化学工程—橡胶工业] TQ325.1