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首页> 外文期刊>Journal of Applied Polymer Science >Reinforcing Properties of Poly(trimethyleneterephthalate) by a Thermotropic Liquid Crystal Polymer
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Reinforcing Properties of Poly(trimethyleneterephthalate) by a Thermotropic Liquid Crystal Polymer

机译：热塑性液晶聚合物对聚对苯二甲酸丙二醇酯的增强性能

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摘要

A thermotropic liquid crystalline copolymer (TLCP) having a trimethylene terephthalate (TT) unit and a triad terephthaloyl mesogenic unit was synthesized and its blends with poly(trimethylene terephthalate) (PTT) were prepared for TLCP-reinforced fiber spinning. The TLCP, PTT, and their blends were characterized in terms of their thermal, mechanical, and morphological properties. In the hot-drawn fibers of 20 wt % TLCP/PTT blend, the well-oriented fibrils were observed at higher temperature (>T-m) than the PTT melt by polarizing optical microscope. With scanning electron microscopy images of cryogenically fractured surfaces of the blends, the TLCP were well dispersed in 0.3 to 0.5 mu m in domain size. Interfacial adhesion between the TLCP and PTT seemed fairly good. The TLCP acted effectively as a reinforcing material in PTT matrix, it led to an increase of initial modulus and tensile strength of the blend fibers as TLCP's content increased. (c) 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41408.
机译：合成具有对苯二甲酸三亚甲基酯（TT）单元和对苯二甲酸三亚乙基介晶单元的热致液晶共聚物（TLCP），并制备其与聚对苯二甲酸三亚甲基酯（PTT）的共混物以用于TLCP增强纤维纺丝。 TLCP，PTT及其混合物的特征在于其热，机械和形态学特性。在20wt％TLCP / PTT共混物的热拉伸纤维中，通过偏光光学显微镜在比PTT熔体更高的温度（＞ T-m）下观察到取向良好的原纤维。用共混物的低温断裂表面的扫描电子显微镜图像，TLCP被很好地分散在0.3至0.5μm的区域尺寸中。 TLCP和PTT之间的界面粘合力似乎很好。 TLCP有效地用作PTT基体中的增强材料，随着TLCP含量的增加，它导致了共混纤维的初始模量和拉伸强度的提高。 （c）2014 Wiley Periodicals，Inc. J. Appl。 Polym。科学2015，132，41408。

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