PTMEG共混改性PBT纤维的制备及其性能研究  

Preparation and properties of PTMEG modified PBT fiber by blending method

作　　者：张景春 黄家鹏[1] 张圣明 方运华 王朝生[1] 吉鹏[2] ZHANG Jingchun;HUANG Jiapeng;ZHANG Shengming;FANG Yunhua;WANG Chaosheng;JI Peng(0x09State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,College of Materials Science and Engineering,Donghua University,Shanghai 201620;Co-Innovation Center for Textile Industry,Donghua University,Shanghai 201620)

机构地区：[1]东华大学材料科学与工程学院纤维材料改性国家重点实验室,上海201620 [2]东华大学纺织产业关键技术协同创新中心,上海201620

出　　处：《合成纤维工业》2019年第5期1-6,共6页China Synthetic Fiber Industry

基　　金：国家自然科学基金项目(51703023);中国石油化工股份有限公司技术开发项目(218005-3)

摘　　要：以聚对苯二甲酸丁二醇酯-聚四亚甲基醚二醇(PBT-PTMEG)为改性剂,与聚对苯二甲酸丁二醇酯(PBT)进行共混纺丝,通过控制PBT-PTMEG添加量制备不同PTMEG含量的PTMEG/PBT共混纤维,探讨了PTMEG含量对纤维柔软性及其他性能的影响。结果表明:在共混纺丝过程中,PTMEG作为改性组分与PBT相容性良好,PTMEG质量分数为6%时可纺性好,继续增加至8%时可纺性变差;随着PTMEG含量的增加,PTMEG/PBT共混纤维的初始模量显著降低,断裂强度略有降低,断裂伸长率、断裂比功均逐渐提高,吸湿性及染色性能也得到改善;当PTMEG质量分数为6%、拉伸倍数为2.8时,PTMEG/PBT共混纤维的断裂比功最高达0.98 cN/dtex,初始模量也较低为21.8 cN/dtex,纤维的柔软性得到了明显提升,综合性能最好。Polytetramethylene ether glycol/polybutylene terephthalate(PTMEG/PBT) blend fibers with different PTMEG content were prepared by blend spinning PBT with PBT-PTMEG as a modifier. The effect of PTMEG content on the softness and other properties of the fibers was discussed. The results showed that PTMEG as a modifing component had good compatibility with PBT in the blend spinning process;the spinnability was good when the mass fraction of PTMEG was 6%, but became worse when the mass fraction of PTMEG continued to increase to 8%;the initial modulus of PTMEG/PBT blend fibers decreased significantly, the breaking strength decreased slightly, the elongation at break and breaking work increased gradually, and the hygroscopicity and dyeing properties also increased with the increase of PTMEG content;and the breaking work of PTMEG/PBT blend fibers reached 0.98 cN/dtex, the initial modulus was 21.8 cN/dtex, the flexibility of PTMEG/PBT blend fibers was obviously improved and the comprehensive properties were optimized when the mass fraction of PTMEG was 6% and the draw ratio was 2.8.

关 键 词：聚对苯二甲酸丁二酯纤维 聚四亚甲基醚二醇 共混纺丝 共混纤维 柔软性 染色性 亲水性 力学性能 

分 类 号：TQ342+.22[化学工程—化纤工业]