NEDDP/PBT双组分复合长丝卷曲与力学性能研究  

Study on crimp and mechanical property of NEDDP/PBT bi-component composite filament

作　　者：周玉磊 代国亮 王妮[1] 肖红 ZHOU Yulei;DAI Guoliang;WANG Ni;XIAO Hong(Donghua University,Shanghai,201620,China;Academy of Military Sciences System Engineering Research Institute Military Supply Engineering Research Institute,Beijing,100082,China)

机构地区：[1]东华大学,上海201620 [2]军事科学院系统工程研究院军需工程技术研究所,北京100082

出　　处：《棉纺织技术》2023年第2期36-40,共5页Cotton Textile Technology

摘　　要：探讨不同纺丝条件下NEDDP/PBT双组分复合长丝的卷曲和力学性能。在不同的两组分特性黏度配比、组分比例、牵伸比、牵伸温度和定形温度条件下纺制NEDDP/PBT双组分复合长丝,测试了各长丝的沸水收缩率、卷曲率、断裂强度、屈服应力和杨氏模量。研究表明:两组分特性黏度差异增大,双组分复合长丝卷曲性能增加,力学性能下降;双组分复合长丝中两组分比例相等时,沸水收缩率最大;NEDDP组分增加,双组分复合长丝力学性能提高;牵伸比、牵伸温度、定形温度虽然对双组分复合长丝的卷曲和力学性能都有影响,但影响不大。认为:两个组分的特性黏度差异和组分比例是影响NEDDP/PBT双组分复合长丝卷曲和力学性能的关键因素。Crimp and mechanical property of NEDDP/PBT bi-component composite filament under different spinning condition were discussed. NEDDP/PBT bi-component composite filaments were spun under different conditions of bi-component intrinsic viscosity ratio,component ratio,drawing ratio,drawing temperature and shaping temperature. The boiling water shrinkage,crimp rate,breaking strength,yield stress and Young’s modulus of each filament were tested. Results showed that curling properties of bi-component fibers were increased and mechanical properties were decreased while intrinsic viscosity difference between two components was increased.When the ratio of two single components in bi-component fibers was equal,the boiling water shrinkage was the largest. When NEDDP component was increased,the mechanical property of the bi-component filament was improved. Drawing ratio,drawing temperature and shaping temperature had certain impact on crimp and mechanical property of the bicomponent filament,the impact was not large.It is considered that intrinsic viscosity difference and component ratio of two components are the key factors affecting the curling and mechanical property of the NEDDP/PBT composite filament.

关 键 词：NEDDP PBT 双组分复合长丝 卷曲率 沸水收缩率 断裂强力 模量 

分 类 号：TS101.92[轻工技术与工程—纺织工程]