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PBT/PC/E-MA-GMA三元共混体系的力学性能与亚微相态
引用本文:魏刚,彭娅,龙盛如,黄锐. PBT/PC/E-MA-GMA三元共混体系的力学性能与亚微相态[J]. 合成树脂及塑料, 2006, 23(5): 61-64,69
作者姓名:魏刚  彭娅  龙盛如  黄锐
作者单位:西华大学材料科学与工程学院,四川,成都,610039;四川大学高分子科学与工程学院,四川,成都,610065
摘    要:将乙烯-丙烯酸甲酯-甲基丙烯酸缩水甘油酯(E-MA-GMA)三元共聚物与聚碳酸酯(PC)增韧聚对苯二甲酸丁二酯(PBT),研究了其力学性能、亚微相态和强韧化机制。结果表明,当m(PBT)/m(PC)为50:50,三元共混体系在w(E-MA-GMA)为10%时,缺口冲击强度达93 kJ/m2,同时拉伸强度达到54 MPa。扫描电子显微镜观察发现,E- MA-GMA作为柔性界面层,起到反应性增容作用,使PC分散相的相畴尺寸变小。PC相特有的相形态以及柔性界面层的存在是三元共混体系强韧化的主要机制。

关 键 词:聚对苯二甲酸丁二酯  乙烯-丙烯酸甲酯-甲基丙烯酸缩水甘油酯  聚碳酸酯  亚微相态  强韧化
文章编号:1002-1396(2006)05-0061-04
收稿时间:2006-03-29
修稿时间:2006-03-292006-07-05

Mechanical properties and sub-microscopic phase state of ternary system of PBT/PC/E-MA-GMA
Wei Gang,Peng Ya,Long Shengru,Huang Rui. Mechanical properties and sub-microscopic phase state of ternary system of PBT/PC/E-MA-GMA[J]. China Synthetic Resin and Plastics, 2006, 23(5): 61-64,69
Authors:Wei Gang  Peng Ya  Long Shengru  Huang Rui
Abstract:This paper studied the mechanical properties, sub-microscopic phase state and mechanism of strengthening and toughening of poly(butylene terephthalate) (PBT) modified with ethylene-methyl acrylate- glyceryl methacrylate terpolymer (E-MA-GMA) and polycarbonate (PC). The notched impact strength and tensile strength of the ternary blend system reached 93 kJ/m2 and 54 MPa, respectively, when the mass ratio of PBT to PC was 50 : 50 and the mass fraction of E-MA-GMA was 10%. The observation by scanning electron microscope clearly revealed that E-MA-GMA as soft interfacial layer played a function of reactive compatibilizer and made the dimension of the phase domain of PC as dispersive phase become smaller. The formation of the unique phase morphology of PC and the soft interfacial layer constituted the principal course in the mechanism of strengthening and toughening of the ternary blend system.
Keywords:poly(butylene terephthalate)  ethylene-methyl acrylate-glyceryl methacrylate  polycarbonate  sub-microscopic phase state  strengthening and toughening
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