PET/PTT复合纤维的卷曲性能与形态结构  

Crimping performance and morpho structure of PET/PTT conjugated yarn

作　　者：郭静[1] 郑楠[1] 张欣[1] 李晓萌[1] 

机构地区：[1]大连工业大学化工与材料学院,辽宁大连116034

出　　处：《大连工业大学学报》2011年第5期387-390,共4页Journal of Dalian Polytechnic University

摘　　要：以POY-DT和FDY工艺获得的不同规格、本色和有色PET/PTT复合纤维为研究对象,考察了纤维规格、工艺路线和色母粒对PET/PTT复合纤维的卷缩性能的影响,表征了复合纤维的轴向形态结构与断面结构,研究了纤维力学性能。结果表明,PET/PTT复合纤维的卷曲性能随着线密度的增加而升高,在130dtex附近达到峰值;本色复合纤维的卷曲收缩率、卷曲模量和弹性恢复率均高于有色复合纤维,而卷曲稳定度和紧缩伸长率则有色纤维较高,POY-DT工艺得到的复合纤维的卷曲收缩率、卷曲模量、紧缩伸长率、卷曲稳定度、断裂强度高于FDY工艺得到的纤维,但其弹性恢复率低于FDY纤维;经过湿热处理后的复合纤维的卷缩半径明显减小,卷缩性能得到提升;通过复合纤维断面SEM照片观察到,PET与PTT两相间界面黏合良好。PET/PTT conjugated yarn with different specifications and different colors was obtained by POY-DT and FDY process route. The influence of specification, process route and master batch on crimp contraction property of PET/PTT conjugated yarn was investigated and the axial morphostructure, cross section and the mechanical property of the yarn were characterized. As a result, the crimp contraction of PET/PTT conjugated yarn is rised with the increasing linear density and reach its maximum at 130 dtex. The crimp contraction ratio, crimp module and elastic recovery of primary white PET/PTT conjugated yarn was higher than that of blue. The crimp stability and crimp elongation ratio of the blue PET/PTT conjugated yarn was higher than that of the primary white one. The crimp contraction ratio, crimp module, crimp elongation ratio, crimp stability and breaking strength of PET/PTT conjugated yarn obtained from POY-DY process route was higher than that obtained from FDY process route. But the elastic recovery of PET/PTT conjugated yarn obtained from POY-DY process route was lower than that obtained from FDY process route. The crimp radius of PET/PTT conjugated yarn was significantly reduced after moist heat treating and the crimp contraction property was improved. And from the cross section SEM image of conjugated yarn, it can be obtained that the bonding of PET/PTT interfacial complex is well.

关 键 词：PET/PTT复合纤维 卷缩性能 湿热处理 断裂强度 

分 类 号：TQ127.2[化学工程—无机化工]