miPP与ziPP的可纺性比较  

THE SPINNABILITY COMPARISON BETWEEN miPP AND ziPP

作　　者：邢强 朱美芳[1] 陆琰[1] 张瑜[1] 陈彦模[1] 

机构地区：[1]东华大学材料学院纤维改性国家重点实验室,上海200051

出　　处：《合成纤维工业》2001年第5期5-7,共3页China Synthetic Fiber Industry

基　　金：上海市自然基金项目 ( 99ZE14 0 2 5 );上海市优秀学科带头人资助计划资助项目 ( 0 0 XD14 0 0 5 )

摘　　要：采用熔融纺丝法 ,比较了茂金属催化聚丙烯 ( mi PP)和齐格勒 -纳塔催化聚丙烯 ( zi PP)切片在相同纺丝条件下的可纺性 ,研究了纺丝条件对其初生纤维结构与性能的影响。研究发现 ,mi PP的可纺性受温度的影响比较大 ,在低温下纺丝性能较好 ;mi PP卷绕丝与 zi PP卷绕丝相比具有良好的可拉伸性能 ;m i PP的相对分子质量分布较窄 。The spinnability of metallocene catalyzed polypropylene(miPP) and Ziegler\|Natta polypropylene(ziPP) chips was compared as spun by melt spinning process at the same spinning conditions. The effects of spinning conditions on the structure and properties of their as\|spun fibers were studied. It was found that miPP whose spinnability was profoundly affected by temperatures had fairly good spinning performance at lower temperatures; miPP wound yarn was better in tensility as compared with ziPP wound yarn; and miPP as\|spun fiber had higher orientation degree because of the narrow relative molecular mass distribution.

关 键 词：聚丙烯 茂金属催化剂 齐格勒-纳塔催化剂 纺丝性能 卷绕丝 取向度 熔融纺丝 纤维 可纺性 miPP ziPP 

分 类 号：TQ340[化学工程—化纤工业]