用球形Ziegler-Natta催化剂制备PE/PP原位合金的相态结构研究  

Morphology of PE/PP In-Situ Alloys Prepared by Spherical Ziegler-Natta Catalyst

作　　者：左艳梅[1] 张培培[1] 左志芳[1] 

机构地区：[1]扬州工业职业技术学院应用化学系,江苏扬州225127

出　　处：《化学推进剂与高分子材料》2008年第4期37-39,共3页Chemical Propellants & Polymeric Materials

基　　金：国家重点基础研究发展规划(G1999064803);国家自然科学基金(20474053)资助项目

摘　　要：通过偏光显微镜、扫描电镜观察了用球形Ziegler-Natta催化剂制备的PE/PP原位合金的结晶形貌和相态结构,随着无规乙丙共聚物和多嵌段乙丙共聚物含量的减少,合金中的球晶的粒径逐渐变大,合金中的两相之间的界面也更加清晰。随着合金中无规乙丙共聚物和多嵌段乙丙共聚物含量的增加,其屈服断裂程度越来越明显,抗冲强度也越好。Crystalline structure and phase morphology ofPE/PP in-situ alloys prepared with spherical Ziegler-Natta catalyst were observed by PLM and SEM. As the amount of random poly（ethylene-co-propylene） and segmented poly（ethylene-co-propylene） decreases, the diameter of spherical crystal in PE/PP in-situ alloys increases gradually. The interface between two phases of alloys becomes more and more clear. As the amount of random poly（ethylene-co-propylene） and segmented poly（ethylene-co-propylene） increases, the degree of the yield fracture becomes more and more obvious, the impact strength of PE/PP in-situ alloys becomes more and more good.

关 键 词：球形Ziegler—Natta催化剂 PE/PP原位合金 相态结构 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]