PET/PE共混体系中微纤成形机理的探讨  

STUDY ON THE MECHANISM OF FIBRILLATION OF PET/PE BLEND MELT

作　　者：肖峭[1] 金惠芬[1] 龚静华[1] 

机构地区：[1]中国纺织大学

出　　处：《合成纤维》1997年第2期15-19,29,共6页Synthetic Fiber in China

基　　金：国家自然科学基金会资助项目

摘　　要：本文对不同比例的共混样品的初生纤维及卷绕丝的横截面进行电镜分析,探讨低组分微纤成形机理,认为分散相形成超细纤维可分为三个阶段:即喷丝孔入口区阶段的入口拉伸,喷丝孔道阶段的剪切形变以及出喷丝孔阶段的喷头拉伸。通过这三阶段,分散相颗粒受到形变、拉伸最终以微纤的形态分散在纤维内部。该纤维经溶剂溶去基质相后,可得到相互缠绕的超细纤维网络体,直径<0.5μm,纤度<0.002dtex。In the paper electron micrographs of cross sections of PET/PE as-spun and take-up fibers are analysed in order to study the fibrillation of low content component in PET/PE blend filaments. The develoment of fibrils is divided into three steps. First,the particles of disperse phase are drawn at the entrance zone of spinneret. Second,they are sheared in the spinneret channel. Third,they are still drawn as melts flow out of the spinneret so called spinneret draft. Through these three steps, the particles of disperse phase are deformed and drawn to fibrils. The ultrafine fiber of PET with diameter below 0. 5μm,denier below 0. 002. can be obtained after the blend fiber treated with solvent.

关 键 词：聚酯纤维 超细纤维 共混 纺丝 微纤成形 成形 

分 类 号：TQ342.93[化学工程—化纤工业] TQ340.14