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用宽角和小角X射线散射技术测定了聚对苯二甲酸乙二酯(PET)纤维及其与不同含量的癸二酸乙二酯(ES)的无规共聚酯纤维的结晶度、晶区取向度、晶粒尺寸和长周期等超分子结构参数。考查了它们的DSC和动态力学行为。结果表明,一维两相结构模型不适应于本文的聚酯纤维结构体系。Prevorsek的三相模型加以适当改进后,可以较满意地解释实验现象。
The crystallinity and crystallinity of polyethylene terephthalate (PET) fibers and their random copolyester fibers with different content of ethylene sebacate (ES) were measured by wide angle and small angle X-ray scattering. Zone orientation, grain size and long-period super-molecular structure parameters. Examined their DSC and dynamic mechanical behavior. The results show that one-dimensional two-phase structure model is not suitable for the polyester fiber system. Prevorsek three-phase model to be properly improved, you can more satisfactorily explain the experimental phenomenon.