热处理对PTMG-PBT/PET复合纤维性能的影响  

Effect of Heat Treatment on Properties of PTMG-PBT/PET Composite Fiber

作　　者：何崎 范天翔 李军令 柯福佑[1] 陈烨[1] 王华平[1] HE Qi;FAN Tian-xiang;LI Jun-ling;KE Fu-you;CHEN Ye;WANG Hua-ping(State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,College of Material Science and Engineering,Donghua University,Shanghai 201620,China)

机构地区：[1]纤维材料改性国家重点实验室,东华大学材料科学与工程学院,上海201620

出　　处：《合成纤维》2021年第12期1-4,22,共5页Synthetic Fiber in China

基　　金：国家重点研发计划(2017YFB0309204);浙江省领军型创新创业团队(2019R01011)。

摘　　要：以聚醚酯PTMG-PBT和常规聚酯(PET)作为原料,通过复合纺丝制备了PTMG-PBT/PET并列复合纤维,研究了热处理温度和时间对复合纤维力学性能及卷曲性能的影响。结果表明:随着热处理温度的升高和时间的延长,PTMG-PBT/PET并列复合纤维断裂强度最高可从1.97 cN/dtex下降到1.40 cN/dtex,断裂伸长率从90%增大到100%左右;且随着热处理温度的升高和时间的延长,纤维卷曲率和卷曲回复率均呈现先增大后减小的趋势;湿热处理的效果比干热处理好,PTMG-PBT/PET并列复合纤维在100℃下湿热处理5 min,卷曲率和卷曲回复率分别可达70%和55%。The PTMG-PBT/PET parallel composite fibers were prepared by composite spinning with poly⁃ether ester PTMG-PBT and conventional polyester(PET)as raw materials.The effects of heat treatment tem⁃perature and time on the mechanical properties and crimp properties of the composite fibers were studied.The results show that with the increase of heat treatment temperature and time,the breaking strength of PT⁃MG-PBT/PET parallel composite fiber decreases from 1.97 cN/dtex to 1.40 cN/dtex,and the elongation at break increases from 90%to 100%.With the increase of heat treatment temperature and time,the crimp rate and crimp recovery rate of fiber increase at first and then decrease.The effect of wet heat treatment is better than that of dry heat treatment.The crimp rate and crimp recovery rate can reach 70%and 55%after wet heat treatment at 100℃for 5 min.

关 键 词：聚醚酯 并列复合纤维 热处理 卷曲性能 力学性能 

分 类 号：TQ342.25[化学工程—化纤工业] TS101.921[轻工技术与工程—纺织工程]