中国塑料

中国塑料 ›› 2008, Vol. 22 ›› Issue (1): 29-34 .DOI: 10.19491/j.issn.1001-9278.2008.01.006

• 材料与性能 • 上一篇    下一篇

纳米碳酸钙在醇相中的表面处理及其原位复合材料制备

翁盛光，陈建定，夏浙安，章圣苗   

  1. 华东理工大学材料学院，超细材料制备与应用教育部重点实验室，上海200237
  • 收稿日期:2007-08-30 修回日期:1900-01-01 出版日期:2008-01-26 发布日期:2008-01-26

Study on Surface Modification of Nano-Calcium Carbonate in Ethanol and Its In-situ Composite

WENG Sheng-Guang，CHEN Jian-ding，XIA Zhe-an，ZHANG Sheng-miao   

  1. Institute of Materials Science and Engineering, Kcy Lab for Ultrafine Materials of Ministry of Education,East China University of Science and Technology, Shanghai 200237,China
  • Received:2007-08-30 Revised:1900-01-01 Online:2008-01-26 Published:2008-01-26
  • Contact: CHEN Jian-ding

摘要： 在醉相中用具反应活性的甲基丙烯酸(MAA)对纳米碳酸钙(CaCO3)进行表面处理，制成分散体系。研究了MAA用量、pH值、分散时间、温度等对分散体系稳定性及形态的影响。TEM分析表明，在醉相中用10份的MAA对纳米CaCO3粒子进行处理，可以达到较好的分散效果;在原位本体聚合制得的聚苯乙烯(PS)/纳米CaCO3复合材料中，纳米CaCO3粒子能均匀分散，粒径在100 nm以内。纳米CaCO3能较好地增韧增强PS/纳米CaCO3复合材料，含7% -8%，纳米CaCO3的原位复合材料的冲山强度和拉伸强度分别为纯PS的258‘%，和311%，

关键词: 纳米碳酸钙, 表面处理, 分散, 原位聚合, 复合材料

Abstract: Nano-calcium carbonate(nano-CaCO3)particle was surface modified with methacrvlic acid (MAA)in a medium of ethanol.The carboxyl groups of MAA were anchored on the surface of nano-CaCO3 particle and the double bonds were preserved for further reactions. The effects of the dosage of MAA，the pH of the medium, treating time and temperature on the morphology of the modified particles and the stability of the dispersion were investigated in order to optimize modification process.Polystyrene/nano-CaCO3 composites were prepared via in-situ bulk polymerization. TEM showed that nano-CaCO3 particles with diameters less than 100 nm were distributed homogeneously in polymer matrix. When the content of nano-CaCO} was between 7 % and 8，the toughness and tensile strength of the composites reached their maxima, which were 258 % and 311 % that of neat polystyrene, respectively.

Key words: Nano-calcium carbonate, surface treating, dispersion, in-situ polymerization, composite

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