碳纳米管-蒙脱土/环氧树脂复合材料的流变与固化特性  

Rheology and Curing Characteristics of MWCNTs-OMMT Epoxy Composites

作　　者：梅启林[1] 王继辉[1] 徐莎[1] 黄志雄[1] 

机构地区：[1]武汉理工大学材料科学与工程学院,湖北武汉430070

出　　处：《高分子材料科学与工程》2009年第6期49-52,共4页Polymer Materials Science & Engineering

基　　金：湖北省自然科学基金资助项目(2005ABA010)

摘　　要：采用机械搅拌和离心分散的方法制备了多壁碳纳米管-有机蒙脱土/环氧树脂纳米复合材料。用X射线衍射和扫描电镜对复合材料的微观结构进行了分析和表征,研究了多壁碳纳米管含量对混杂体系流变性和固化特性的影响。结果表明,当有机蒙脱土含量为2%(质量分数,下同)时,蒙脱土在树脂体系中能够形成离散性结构,且与多壁碳纳米管形成一定程度的相互穿插结构。随着多壁碳纳米管含量的增加,混杂复合材料体系的黏度迅速上升,固化放热逐步降低。Epoxy resin nanocomposites with various contents of multi-wall carbon nanotubes （MWCNTs） and organophilic montmorillonite（OMMT） were prepared by the means of shearing mixing and speed mixture. X-ray diffraction and scanning electronic microscopes were used to study the structure and morphology of the nanocomposites. The influence of MWCNTs loadings on the rheology and curing characteristics of the mixture was studied The results show that exfoliated icrostructures are formed and a certain degree of platelet interlocks structure is achieved when the content of OMMT is 2 %. The viscosity of hybrid system increases greatly and the polymerization heat drops with the increasing of the MWCNTs content.

关 键 词：多壁碳纳米管 有机蒙脱土 聚合物纳米复合材料 混杂 流变性 

分 类 号：TB383[一般工业技术—材料科学与工程]