环氧/有机硅大分子插层蒙脱土复合体系的结构与性能  

Structure and Properties of Epoxy/OMMT Intercalated by Silicone Macromolecule Nanocomposites

作　　者：姚丁杨[1] 李茂源[2] 洪义强[2] 季苏东[2] 邹华维[1] 梁梅[1] 

机构地区：[1]高分子材料工程国家重点实验室,四川大学高分子研究所,四川成都610065 [2]北京机电工程总体设计部,北京100039

出　　处：《高分子材料科学与工程》2013年第8期76-79,共4页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(51273118);四川省科技支撑项目(2013FZ006)

摘　　要：通过向环氧树脂中加入有机硅大分子插层蒙脱土来改善环氧树脂的阻尼性能。首先以聚硅氧烷分子链为插层聚合物,通过插层反应制备了一种类似宏观约束阻尼结构的纳米级多层结构单元,进而再与环氧树脂混合固化,并对得到的复合体系的结构与性能进行分析表征。X射线衍射(XRD)测试结果表明,微纳米约束阻尼结构单元已经在复合材料中形成;动态力学性能(DMA)测试表明,随着插层结构单元质量分数的增加,复合体系的损耗因子峰移向低温方向,且峰面积增大。The damping properties of epoxy resin were improved through dispersion of silicone-intercalated organic montmorillonite into the polymer matrix.Flexible silicone macromolecules were inserted into organic montmorillonite（OMMT） by intercalation reaction to prepare the layered structure similar to the constrained layer damping structure unit.The influences of the different content of silicone-intercalated OMMT on the damping properties of the materials were probed by DMA.Analysis results of XRD prove that the silicone-intercalated OMMT has been prepared successfully under the appropriate process.The addition content of the silicone-intercalated OMMT increases,glass transition temperature（Tg） of the epoxy decreases.The epoxy-nanocomposites achieve a better damping performance in the broad temperature range.

关 键 词：环氧树脂 蒙脱土 有机硅大分子 阻尼材料 

分 类 号：O633.13[理学—高分子化学]