第 38 卷第 6 期 Vol. 38 No. 6 2008 年 12 月 Dec 2008

所属栏目：功能材料 新型光引发剂修饰蒙脱土及其光固化环氧丙烯酸酯纳米复合材料的制备和表征

陈白秋1，臧阳陵1，2，刘光鹏3，徐伟箭3 （1. 湖南海利化工股份有限公司，湖南 长沙 410007；2. 湖南化工研究院，湖南 长沙 410007；3. 湖南大学高分子研究所，湖南 长沙 410082）

摘　要：通过4-溴甲基二苯甲酮与二甲基正十八胺反应合成长链型季铵盐光引发剂苯甲酰苄基二甲氨基十八烷基溴化铵，插层修饰蒙脱土；通过层间引发聚合的方法光固化制备环氧丙烯酸酯／蒙脱土纳米复合材料。XRD和TEM分析结果表明，蒙脱土在光固化复合材料中已得到插层和部分剥离；T0GA及力学性能测试结果表明，环氧丙烯酸酯／蒙脱土光固化纳米材料的热稳定性、拉伸强度、弹性模量及断裂伸长率得到了显著提高。

关键词：长链型光引发剂；有机修饰蒙脱土；光固化；环氧丙烯酸酯／蒙脱土纳米复合材料

中图分类号：TQ050.4+3　　文献标识码：A　　文章编号：1009-9212（2008）06- 0048-04

Preparation and Characterization of Novel Potoinitiator Organically-modified MMT and its EA／MMT UV-cured Nanocomposites

CHEN Bai-qiu1，ZANG Yang-ling1，2，LIU Guang-peng3，XU Wei-jian3 （1. Hunan Haili Chemical Industry Co.，Ltd，Changsha 410007，China；2. Hunan Research Institute of Chemical Industry，Changsha 410007，China；3. Macromofecule Institule，Hunan University，Changsha 410082，China）

Abstract：The EA／MMT uv-cured nanocomposites were prepared using modified clays and epoxy resin via intra-gallery UV-curing polymerization and the organic modified clays were used as the only photoinitiator. The organic modified clays were modified by novel long-chain type quarternary ammonium salt photoinitiator benzoylbenzyl-N，N-dimethyl-N-octadecylammonium bromide which was synthesized by the reaction of 4-bromomethyl benzophenone with octadecyl dimethyl amine. The morphology of the UV-cured EA／MMT nanocomposites prepared from this organically-modified MMT has been studied using XRD and TEM，and the results have shown an intercalated structure with partially exfoliation for all the samples. Experimental results from TGA and mechanical property testing have also indicated that the thermal and mechanical properties of UV-cured nanocomposites was significantly enhanced.

Key words：long chain potoinitiator；organically-modified MMT；UV-curing；EA／MMT nanocomposites

基金项目：湖南省科技计划项目（S2007F123）。

作者简介：陈白秋（1972-）男，湖南益阳人，工程师，主要从事精细化工研究。

收稿日期：2008-12-23