PTMG-PBT/PBT并列复合弹性纤维的制备工艺  

Preparation Process of PTMG-PBT/PBT Side-by-Side Composite Elastic Fiber

作　　者：李军令 何崎 柯福佑[1] 陈烨[1] 王华平[1] 靳高岭[2] LI Jun-ling;HE Qi;KE Fu-you;CHEN Ye;WANG Hua-ping;JIN Gao-ling(State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,Donghua University,Shanghai 201620,China;China Chemical Fibers Association,Beijing 100020,China)

机构地区：[1]东华大学纤维材料改性国家重点实验室,上海201620 [2]中国化学纤维工业协会,北京100020

出　　处：《合成纤维》2021年第4期4-8,共5页Synthetic Fiber in China

基　　金：国家重点研发计划(2017YFB0309200);浙江省领军型创新创业团队(2019R01011)。

摘　　要：以聚醚酯四氢呋喃均聚醚-聚对苯二甲酸丁二醇酯(PTMG-PBT)和PBT为原料,按照50∶50的质量比,通过熔融纺丝制备了具有高度自卷曲的并列复合弹性纤维。研究复合纤维的制备工艺参数,包括牵伸倍数、牵伸热定形温度、热处理温度和时间对并列复合弹性纤维力学性能和卷曲性能的影响。试验结果表明:牵伸倍数的增大能够极大地改变复合纤维的卷曲形貌,改善卷曲性能以及显著提高复合纤维的模量和强度;牵伸温度140℃时,复合纤维力学性能和卷曲性能最佳;热处理温度100℃、热处理时间5 min时,复合纤维的卷曲率和卷曲回复率达到最佳,分别为60%和53%。Using PTMG-PBT and PBT as raw materials,according to the mass ratio of 50∶50,the side-by-side composite elastic fiber with a high degree of self-crimp was prepared by melt spinning,and the influ-ence of preparation process parameters of composite fiber,including drafting ratio and drafting-setting tem-perature,heat treatment temperature and time on the mechanical properties and crimp performance of thecomposite fiber was studied.The experimental results show that the increase of the drafting ratio can greatlychange the crimp morphology and improve the crimp performance of the composite fiber and significantly in-crease the modulus and strength of the composite fiber.When the drafting temperature is 140℃,the me-chanical proprties and crimp properties of the composite fiber are the best.When the heat treatment temper-ature is 100℃and the heat treatment time is 5 min,the coil curvature and crimp recovery rate of compositefiber reach the optimal value of 60%and 53%,respectivelyAbstract:.

关 键 词：PTMG 并列复合纤维 热处理 卷曲性能 

分 类 号：TQ342.22[化学工程—化纤工业]