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为了说明聚醚酯纤维的性能和形态结构与纺丝速度之间的关系,对聚醚酯切片设计了不同纺丝速度的熔融纺丝试验。结果发现:当纺丝速度增加为750 m/min时,纤维的断裂强度和回弹性较好。进一步通过同步辐射广角X射线散射、小角X射线散射以及双折射、声速取向试验,分析了聚醚酯纤维不同尺度的形态结构变化,发现在高纺丝速度下,形成了纤维取向度高、结晶度高、长周期小的形态结构。
In order to illustrate the relationship between the properties and morphological structure of polyetherester fibers and the spinning speed, melt spinning tests of polyether ester chips at different spinning speeds were designed. The results showed that when the spinning speed increased to 750 m / min, the breaking strength and resilience of the fiber were better. Furthermore, through the wide-angle X-ray scattering, small angle X-ray scattering, birefringence and sonic orientation experiments, the morphological changes of polyetherester fibers at different scales were analyzed. It was found that under high spinning speed, Degree is high, long period of small morphological structure.