Journal of Petrochemical Universities

Journal of Petrochemical Universities ›› 2010, Vol. 23 ›› Issue (2): 1-4.

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Compatibilization andStrengthen of PBT/PP Blends by Adding Liquid Crystalline Polymer With Carboxylic Group

  

  1. School of Chemistry and Materials Science,  Liaoning Shihua University, Fushun Liaoning 113001, P. R. China
  • Received:2009-12-21 Published:2010-06-25 Online:2010-06-25

含羧酸基团的液晶聚合物在PBT/PP共混体系的增容增强作用

徐新宇   

  1. 辽宁石油化工大学化学与材料科学学院, 辽宁抚顺 113001
  • 作者简介:徐新宇(1979 -), 女, 吉林蛟河市, 博士, 讲师
  • 基金资助:
    国家自然科学基金项目(50673105);国家863 项目(2006AA02Z291)

Abstract:

A liquid crystalline ionomer (LCP) was synthesized by using of an interfacial condensation reaction from 4-phenylene-dicarbonic acid bis (4-carboxyl phenyl) ester, 1, 10-sebacoyl dihydroxy, 1, 12-dodecanedioyl dihydroxy and 2, 5-dihydroxybenzoic acid. The LCP has been blended with PBT and PP. The thermal behavior, morphological structure, and mechanical properties of the blends were investigated by differential scanning calorimetry (DSC), scanning electron microscopy (SEM), and tensile measurement. DSC and SEM results indicate that the LCP interacts with both the dispersed (PP) phase and the matrix (PBT) phase by acting as compatibilizer at the interface. The compatibilizer brings about good adhesion at the interfacial, which reduces the disperse phase size and enables a finely PP phase at matrix. The mechanical properties of the ternary blends are improved when a proper amount of LCP is added. However, when the content of LCP being added to the blends is surplus,the mechanical performances of blends are decreasing. 

摘要: 将对苯二甲酸二- (4 -羧基苯)酯、1, 10 -癸二醇、1 , 12-十二烷二醇和2 , 5 -二羟基苯甲酸按比
例进行溶液缩聚反应, 合成了一种含有羧酸基团的液晶聚合物(LCP)。将LCP 与PBT 、PP 进行熔融共混制备了
PBT/ PP/ LCP 共混物。所合成的共混物通过DSC、SEM 和拉伸试验等方法进行了热性能、微观形态及其力学性能
的分析。DSC 和SEM 测试结果表明LCP 的加入, 增加了PBT 和PP 的界面粘结力, 降低了PP 分散相的尺寸, 改善
了二者的相容性;拉伸试验结果证实, LCP 的引入提高了共混物的拉伸强度和断裂伸长率, 然而当加入过量的LCP
后, 共混物的力学性能略有变差。

关键词: 液晶聚合物 , 羧酸基团 , 增容 , 增强

Cite this article

XU Xin-yu . Compatibilization andStrengthen of PBT/PP Blends by Adding Liquid Crystalline Polymer With Carboxylic Group[J]. Journal of Petrochemical Universities, 2010, 23(2): 1-4.

徐新宇. 含羧酸基团的液晶聚合物在PBT/PP共混体系的增容增强作用[J]. 石油化工高等学校学报, 2010, 23(2): 1-4.

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