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首页> 外文期刊>Plastics, Rubber and Composites >Dynamic mechanical, mechanical and morphological properties of reactive thermotropic liquid crystalline polymer/unsaturated polyester/glass fibre hybrid composites
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Dynamic mechanical, mechanical and morphological properties of reactive thermotropic liquid crystalline polymer/unsaturated polyester/glass fibre hybrid composites

机译：反应性热致液晶聚合物/不饱和聚酯/玻璃纤维杂化复合材料的动态力学，力学和形态学性能

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摘要

Unsaturated polyester (UP) reinforced with self-synthesised reactive thermotropic liquid crystalline polymer (TLCP)-methacryloyl copolymer (LCMC) and glass fibre (GF), the hybrid composites of UP/GF/LCMC were prepared by moulding technology. The dynamic mechanical analysis indicated that storage modulus and glass transition temperature (Tg) of hybrid composites increased significantly because of the addition of LCMC. The effect of LCMC content on the mechanical properties of LCMC/UP/GF hybrid composites such as impact strength, specific strength and modulus and load-displacement relationship were also investigated through static mechanical tests. The mechanical properties of hybrid composites increased significantly because of the addition of LCMC. The crystal behaviour analysis of LCMC/UP blend was investigated by X-ray diffraction and polarising optical microscopy. The results showed that the crystal phase and texture structure of LCMC still existed in the blends after blending with UP. The morphology of fracture surfaces of hybrid composites containing different TLCP contents was observed by scanning electron microscopy. The present paper discussed the mechanism for the improvement of dynamic mechanical and mechanical properties.
机译：通过自合成反应性热致液晶聚合物（TLCP）-甲基丙烯酰基共聚物（LCMC）和玻璃纤维（GF）增强的不饱和聚酯（UP），通过成型技术制备了UP / GF / LCMC的杂化复合材料。动态力学分析表明，由于添加了LCMC，杂化复合材料的储能模量和玻璃化转变温度（Tg）显着提高。还通过静态力学试验研究了LCMC含量对LCMC / UP / GF混杂复合材料力学性能的影响，如冲击强度，比强度和模量以及载荷-位移关系。由于添加了LCMC，杂化复合材料的机械性能显着提高。通过X射线衍射和偏光光学显微镜研究了LCMC / UP共混物的晶体行为分析。结果表明，与UP共混后，LCMC的晶相和织构仍存在。通过扫描电子显微镜观察了含有不同TLCP含量的杂化复合材料的断口形貌。本文讨论了改善动态力学和力学性能的机理。

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