PP／PET合金纤维的制备及其力学性能研究

Preparation of PP/PET Alloy Fibers and Study on its Mechanical Properties

在聚丙烯(PP)与聚苯对二甲酸乙二酯(PET)共混体系中添加增容剂PP-g-AA,用扫描电镜对共混挤出物的断面进行观察,结果发现:增容剂的加入大大改善了PP与PET两相的相容性,增容剂的最佳添加量为PET质量的50％。用PP／PET共混物制备了合金纤维,观察了纤维断面形貌,并测试了这种合金纤维的力学性能,发现PP／PET／PP-g-AA质量比为90:10:5时,合金纤维的力学性能最好。

PP - g - AA was served as a compatibilizer for the blends of PP/PET in this paper. The SEM pictures showed that the compatibilizer of PP - g - AA remarkably improved the compatibilization of PP/PET blends and the most appropriate amount for compatibilizer is 50% （by weight of PET）. Besides, PP/PET composite fibers were prepared, fiber broken morphology was observed by SEM and fiber mechanical properties were measured. The results showed that composite fiber with PP/PET/PP g AA of 90/10/5 has excellent mechanical properties.