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›› 2007, Vol. 7 ›› Issue (4): 790-795.

• 材料工程专栏 • 上一篇    下一篇

纳米碳酸钙/聚苯乙烯原位复合材料的制备及表征

翁盛光,陈建定,夏浙安,章圣苗,吴秋芳   

  1. 华东理工大学材料科学与工程学院
  • 出版日期:2007-08-20 发布日期:2007-08-20

Preparation and Characterization of in-situ Nano Calcium Carbonate/Polystyrene Composite

WENG Sheng-guang,CHEN Jian-ding,XIA Zhe-an,ZHANG Sheng-miao,WU Qiu-fang   

  1. School of Materials Science and Engineering, East China University of Science and Technology
  • Online:2007-08-20 Published:2007-08-20

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被引次数

13

摘要： 将纳米碳酸钙(Nano-CaCO3)颗粒先从水相中转移至醇相中，再通过甲基丙烯酸处理，在颗粒表面包覆了既具离子键又具聚合反应活性的表面层. 在稍高于100℃温度下，经该项处理后的纳米CaCO3固含量大于80%的滤饼能均匀分散于苯乙烯单体中，用原位本体聚合法制得纳米CaCO3/PS(聚苯乙烯)原位复合材料. TEM分析表明，原位复合材料中纳米CaCO3颗粒能均匀分散于基体中，粒径在100 nm以内，并由此提出分散相呈集散形貌的结构模型. 纳米碳酸钙能对复合材料基体起到较好的增韧作用，含7%~8%纳米CaCO3的原位复合材料的冲击强度比纯PS提高158%.

关键词: 纳米碳酸钙, 聚苯乙烯, 复合材料, 制备, 集散型结构模型

Abstract: CaCO3 nano-particles transferred from water phase into ethanol were treated by methacrylic acid to form reactive interface by ionic bonding. Well dispersed CaCO3 nano-particles in styrene obtained from the filtermass of treated CaCO3 nano-particles with solids content more than 80% at a temperature slightly higher than 100℃ were polymerized via in-situ bulk polymerization to produce nano-CaCO3/polystyrene composite. TEM images show that CaCO3 nano-particles with the sizes less than 100 nm were distributed homogeneously in polymer matrix. CaCO3 nano-particles can play a positive role to increase the toughness of composite material matrix, and the toughness of the composite with 7%~8% CaCO3 nano-particles can be improved up to 258% of pure polystyrene. The structure model of pool dispersion was proposed and used to explain the relationship between toughness and structure of the composite.

Key words: nano calcium carbonate, polystyrene, composites, preparation, structure model