熔纺双组分调温聚丙烯纤维

 以正构烷烃和聚合物相变材料为芯层，聚丙烯为纤维的皮层，采用双组份熔融复合熔融纺丝法制备储热调温纤维。采用扫描电子显微镜(SEM)、差示扫描量热仪(DSC)和单纤维电子强力仪等观察了纤维的形貌，研究纤维的热力学性能和物理机械性能。结果表明：纤维的结构致密，具有明显的皮芯分界，相变材料质量分数为28%时，纤维的热焓值可达到36~40J/g，对纤维进行2.75倍的牵伸后处理，断裂强度和伸长率分别为2.3cN/dtex和29%，可满足纺织服装的应用要求。

Melt-spun bicomponent thermo-regulated polypropylene fibers

Bicomponent thermo-regulated fiber was fabricated by melt-spinning using n-alkanes and polymeric phase change material as the core and polypropylene as the shell.The surface morphology,thermal behavior and mechanical properties of the fiber were examined using scanning electron microscope(SEM),differential scanning calorimeter(DSC) and tensile strength tester.The results show that the fiber has a compact structure with obvious core-shell boundary.The heat enthalpy is about 36-40 J/g when the mass fraction of the phase change material is 28%.The strength and elongation at break of the fiber are 2.3 cN/dtex and 29%,respectively,as the drawn ratio is up to 2.75.The mechanical properties can satisfy the applied requirements of textile and apparels.