Poly(ethylene-2,6-naphthalenedicarboxylate) (PEN) has been prepared from commercial dimethyl-2,6-naphthalenedicarboxylate (DM-2,6-NDC) and ethylene glycol (EG) according to the well-known transesterification/polycondensation route. PEN fibers, intended for industrial yarn applications, were obtained by melt spinning and drawing high molecular weight PEN. The properties of these yarns were measured in detail and compared with those of PET industrial yarns. The development of molecular orientation in the spinline is more pronounced for PEN than for PET. Because the yield stress is lower, PEN yarns can more easily be drawn. Breaking tenacities of PEN yarns are comparable with those of PET yarns, but the modulus is much higher and the thermal shrinkage is lower. Therefore, PEN yarns have a better dimensional stability than PET yarns. In addition, it was demonstrated that the thermal resistance of PEN yarns is better. © 1995 John Wiley & Sons, Inc.

中文翻译：

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工业用聚（乙烯-2,6-萘二甲酸乙二酯）纤维

聚（2,6-萘二甲酸乙二酯）（PEN）是根据众所周知的酯交换/缩聚路线由市售2,6-萘二甲酸二甲酯（DM-2,6-NDC）和乙二醇（EG）制备的。通过熔融纺丝和拉伸高分子量PEN获得用于工业纱线的PEN纤维。对这些纱线的性能进行了详细测量，并与PET工业纱线进行了比较。PEN的旋转方向上的分子取向发展比PET更为明显。由于屈服应力较低，因此可以更容易地拉伸PEN纱线。PEN纱的断裂强度与PET纱的断裂强度相当，但模量高得多，热收缩率也低。因此，PEN纱比PET纱具有更好的尺寸稳定性。此外，事实证明，PEN纱线的耐热性更好。版权所有©1995 John Wiley＆Sons，Inc.