The effect of cold drawing on aggregation structure of PET fiber and the rebounding performance of PET fibers were studied, and the elasticity recovering mechanism of PTT fiber was discussed.

• 研究了冷拉伸对聚酯纤维聚集态结构、聚酯纤维回弹性能的影响,并讨论了PTT纤维的弹性回复机理。