桐油酸酐固化环氧树脂/蒙脱土纳米复合材料的研究  

STUDY ON EPOXY RESIN/MONTMORILLONITE NANOCOMPOSITE WITH TUNG OIL ANHYDRIDE AS CURING AGENT

作　　者：徐卫兵[1] 鲍素萍[2] 唐述培[2] 何平笙[1] 

机构地区：[1]中国科学技术大学高分子科学与工程系,安徽合肥230026 [2]合肥工业大学化工学院,安徽合肥230009

出　　处：《高分子材料科学与工程》2002年第2期183-186,191,共5页Polymer Materials Science & Engineering

基　　金：安徽省自然科学基金资助项目

摘　　要：通过阳离子交换的方法将蒙脱土进行有机化处理 ,使蒙脱土由亲水性变成亲油性且层间距扩大。采用浇模固化成型法制备环氧树脂 /桐油酸酐 /蒙脱土纳米复合材料 ,并用 XRD、DMTA等手段研究有机蒙脱土在环氧树脂中的剥离行为。研究发现 ,加入桐油酸酐固化剂后 ,粘土被剥离而得到剥离型的纳米复合材料 ,而且工艺条件的变化并不明显改变剥离的效果。Organophilic montmorillonite was obtained by the ion exchange of organic ammonium compound, which was changed into hydrophobic clay and its basal spacing was extended. The nanocomposite of epoxy resin/tung oil anhydride/montmorillonite was prepared by casting and curing, and the exfoliation behavior of epoxy resin in an organoclay has been investigated by XRD and DMTA methods. It proved that the distance of the clay gallery rises and the exfoliated nanocomposite is formed with tung oil anhydride as curing agent, and the change of curing condition does not change the effect of exfoliation. Dynamic mechanical thermal analysis (DMTA) proved that the glass transition temperature of exfoliated nanocomposite decreases as the content of montmorillonite is raised.

关 键 词：蒙脱土 环氧树脂 桐油酸酐 剥离 玻璃化转变 储能模量 纳米复合材料 

分 类 号：TB383[一般工业技术—材料科学与工程] TQ327.9[化学工程—合成树脂塑料工业]