Crystallization and orientation of PET films of different crystallization rates have been studied doing various techniques during stretching.
用多种方法对两个结晶速率不同的PET样品在拉伸过程中的结晶和取向进行了研究。
The orientation behaviour of molecular chains of hard elastic polypropylene(HEPP) film was investigated on the uniaxial stretching by polarized IR Vibration-Mechanical Spectroscopy.
本文用力学-振动光谱研究了硬弹性聚丙烯（HEPP）晶区和非晶区分子链在拉伸时取向的变化。
Thus, the stretching, orientation, heating and crystallization all changed in different parts of the film and this was one of the reasons for the property variations of the films produced.
拉伸速率是不断变化的等，使横拉过程各部位的拉伸、取向、受热、结晶等履历不尽相同。这是引起产品最终性能差异的重要原因之一。
The changes of preferred orientation of PAN-based carbon fibers during continuous high temperature graphitization and hot stretching graphitization were investigated by X-ray diffraction (XRD).
利用XRD研究了PAN基碳纤维在连续高温石墨化和热牵伸石墨化过程中纤维内石墨微晶沿纤维轴择优取向性的变化。
With the effect of stretching, iPP molecular orientation leads to membrane tensile strength outstanding enhanced.
经拉伸作用后，分子取向排列，可显著增大膜拉伸强度。
The unparall molecule orientation angle control and particular MD and TD stretching configurations ensure excellent film properties.
③独特的“分子角”控制技术，特殊的纵、横向拉伸配置，保证了产品极佳的综合性能 ；
The unparall molecule orientation angle control and particular MD and TD stretching configurations ensure excellent film properties.
③独特的“分子角”控制技术，特殊的纵、横向拉伸配置，保证了产品极佳的综合性能 ；
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