湖南大学学报（自然科学版）2009，Vol.36Issue(7)：63-67,5.
EA/MMT纳米复合材料的制备及其光固化动力学研究
Preparation and UV Curing Kinetics of EA/MMT Nanocomposites
摘要
Abstract
EA/MMT UV-cured nanocomposites were prepared by 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 with new potoinitiator benzoylbenzyl-N,N-dimethyl-N-octadecylammonium bromide quaternary ammonium salt, which was synthesized through the reaction of 4-bromomethyl benzophenone with octadecyl dimethyl amine. The UV-cured process kinetics of the EA/MMT nanocomposites were studied immediately after UV exposure by means of infared spectroscopy. The morphology of the EA/MMT nanocomposites was studied using XRD and TEM, and the results showed that all the samples had an intercalated structure with partial exfoliation. It was found that both curing rate (R) and ultimate vinyl conversion (C) could be raised by increasing photoinitiator concentration and elevating temperature. The oxygen possessed an inhibition effect that prolonged the induction period on the curing. And the total apparent reaction exponent and apparent activation energy were obtained within the range of 6～7 and 9.8 kJ/mol.关键词
动力学/EA/MMT纳米复合材料/修饰蒙脱土/紫外光固化Key words
kinetics/EA/MMT nanocomposites/ organically-modified MMT/UV-curing分类
化学化工引用本文复制引用
徐伟箭,刘光鹏,臧阳陵..EA/MMT纳米复合材料的制备及其光固化动力学研究[J].湖南大学学报（自然科学版）,2009,36(7):63-67,5.基金项目
湖南省科技计划重点项目资助([2007]103 （）
2007FJ4062) （）
