PDMS共混改性超柔PBT纤维的制备及其性能  

Preparation and Properties of Soft PBT Fiber in Modification of PDMS Blending

作　　者：陈向玲[1,2] 张景春 吉鹏 王朝生[3] 王华平[1] 

机构地区：[1]东华大学纺织产业关键技术协同创新中心 [2]江苏新视界先进功能纤维创新中心有限公司 [3]东华大学材料科学与工程学院

出　　处：《纺织导报》2020年第5期36-42,共7页China Textile Leader

基　　金：中国石油化工股份有限公司技术开发项目(218005-3)。

摘　　要：文章以聚对苯二甲酸丁二醇酯-聚二甲基硅氧烷(PBT-PDMS)为母粒,与聚对苯二甲酸丁二醇酯(PBT)进行共混纺丝,通过控制PBT-PDMS添加量制备不同PDMS含量的PBT/PDMS共混纤维,探讨了PDMS含量对纤维柔软性及其他性能的影响。结果表明:PDMS作为改性组分与PBT相容性良好,PDMS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PDMS含量的增加,PBT/PDMS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,染色性能也得到改善。当PDMS质量分数为6%、拉伸倍数为2.8时,PBT/PDMS共混纤维的断裂比功达0.92 cN/dtex,初始模量较低,为22.9 cN/dtex;制成的1/2斜纹织物的硬挺度为2.595 cm,抗弯刚度B为0.1098 cN·cm^2/cm(经向)、0.1542 cN·cm^2/cm(纬向),弯曲滞后量2HB为0.2283 gf·cm/cm(经向),0.2976 gf·cm/cm(纬向),纤维及织物的柔软性得到了明显提升,综合性能最好。Polybutylene terephthalate-polydimethylsiloxane(PBT-PDMS)as the masterbatch was used for blend spinning with polybutylene terephthalate(PBT).PBT/PDMS blended fibers with different PDMS content were prepared by controlling the amount of PBT-PDMS added,and the effects of PDMS content on fiber softness and other properties were discussed.The results showed that PDMS as a modifying component had good compatibility with PBT in the blend spinning process;the spinnability was good when the mass fraction of PDMS was 6%,and became worse when the mass fraction of PDMS continued to increase to 8%;with the increase of PDMS content,the initial modulus of PBT/PDMS blend fibers decreased significantly,the breaking strength decreased slightly,the elongation at break and breaking work both increased gradually,and the dyeing properties also improved.When the mass fraction of PDMS was 6%and the draw ratio was 2.8,the breaking work of PBT/PDMS blend fibers reached 0.92 cN/dtex,the initial modulus was relatively low,reaching 22.9 cN/dtex;the stiffness of produced 1/2 twill fabric was 2.595 cm,the bending rigidity B was 0.1098 cN·cm^2/cm(warp direction),0.1542 cN·cm^2/cm(weft direction),and the hysteresis of bending 2HB was 0.2283 gf·cm/cm(warp direction),0.2976 gf·cm/cm(weft direction),the flexibility of PBT/PDMS blend fibers and fabric was obviously improved,and the comprehensive properties were optimized.

关 键 词：聚对苯二甲酸丁二酯纤维 聚硅氧烷 共混纺丝 染色性 柔软性 

分 类 号：TQ342.22[化学工程—化纤工业]