聚醚酯/聚对苯二甲酸丁二醇酯并列复合纤维的制备及其性能  

Properties of polyether-ester/polybutylene terephthalate composite fibers prepared by side by side bicomponent melt spinning

作　　者：于金超 姬洪[2] 陈康 甘宇 YU Jinchao;JI Hong;CHEN Kang;GAN Yu(College of Textile and Clothing Engineering, Soochow University, Suzhou, Jiangsu 215123, China;State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China)

机构地区：[1]苏州大学纺织与服装工程学院,江苏苏州215123 [2]东华大学纤维材料改性国家重点实验室,上海201620

出　　处：《纺织学报》2021年第4期42-47,共6页Journal of Textile Research

基　　金：中国博士后科学基金面上项目(2017M620125);江苏省博士后科研资助计划项目(2020Z159);苏州市前瞻应用基础研究项目(SYG202041);江苏省高校面上基金项目(19KJB540004)。

摘　　要：为得到弹性优良、手感柔软的复合纤维,采用热塑性弹性体聚醚酯(TPEE)与聚对苯二甲酸丁二醇酯(PBT)进行并列复合纺丝,研究了双组分熔体的流变性能、组分配比对并列复合纤维成形稳定性的影响,并分析了复合纤维卷曲形成的机制。结果表明:TPEE组分的加入可降低复合纤维的弹性模量,增加复合纤维的柔软性,但不利于复合纤维断裂强度的提高;当TPEE与PBT的体积比为5∶5时,复合纤维的断裂强度为1.4 cN/dtex,弹性模量为13 cN/dtex,卷曲率高达80%;复合纤维中TPEE组分的热收缩性远高于PBT组分,致使TPEE组分在收缩过程中易受PBT组分的阻碍,形成了TPEE/PBT并列复合纤维的卷曲机制。In order to fabricate the composite fibers with excellent elastic and soft touch,the polyether-ester(TPEE)and polybutylene terephthalate(PBT)were used to fabricate the side by side bicomponent fibers.The effect of the rheological behavior and composition ratio of the TPEE and PBT component on the spinnability was studied.Meanwhile,the mechanism of crimp formation within the composite fibers was analyzed.The results show that the addition of TPEE can reduce the elastic modulus of the composite fiber,and which is contribute to the flexibility of the composite fibers,but it is unfavorable for the improvement to the breaking strength of the fibers.When the volume ratio of TPEE and PBT component is 5∶5,the breaking strength and elastic modulus of the composite fibers is 1.4 and 13 cN/dtex,respectively,and the curl ratio is as high as 80%.The crimp mechanism of TPEE/PBT composite fibers can be explained that the thermal shrinkage of TPEE component is much lager than that of PBT component,so that the shrinkage of TPEE component is easily hindered by the PBT component during the fiber forming process and the crimp forms.

关 键 词：聚醚酯 聚对苯二甲酸丁二醇酯 并列复合纺丝 螺旋卷曲 卷曲机制 

分 类 号：TS102.5[轻工技术与工程—纺织工程]