膨润土／聚甲基丙烯酸甲酯纳米复合材料的动态力学行为  

Dynamic Mechanical Behavior of Montmorillonite/PMMA Nanocomposites

作　　者：王琼生[1] 王世铭[1] 王诣婧[2] 

机构地区：[1]福建师范大学化学与材料学院,福建福州350108 [2]华中师范大学化学学院,湖北武汉430079

出　　处：《福建师范大学学报（自然科学版）》2008年第3期54-58,共5页Journal of Fujian Normal University：Natural Science Edition

基　　金：福建省自然科学基金资助项目(2006J0251/U0650007ZD513009);福建省教育厅基金资助项目(JB05313)

摘　　要：利用溶液插层复合技术制备膨润土／聚甲基丙烯酸甲酯（PMMA）纳米复合材料．动态力学性能研究表明：随膨润土加入量的增加，在25-200℃温度范围内复合材料的储能模量E’与损耗模量E”均逐渐增加，各级动态力学性能转变温度（tβ、tg和tf）向高温区迁移，动态力学模量随温度下降速率趋缓，各力学状态稳定区间宽化．有机化的膨润土与PMMA间良好的界面相容性也改变了PMMA断裂机理和能耗方式，起到增强韧化的作用．The poly （methyl methacrylate） / montmorillonlte nanocomposites were prepared by solution intercalation. The dynamic mechanical properties of the composites were studied by means of DMTA. The results showed that with the increasing of montmorillonite content, the storage modulus E＇ and loss modulus E＂ of the composites increased in the range of 25 C to 200 ℃, and the dynamic mechanical property transition temperatures （tβ. tg and tf） shifted to higher temperature, hut the dynamic mechanical modulus declined slower with the increasing of temperature, and the mechanical behavior stable areas were extended. The better interface compatibility between organic montmorillonite and PMMA changed PMMA matrix fracture mechanism and absorbing energy mode, and increased the rigidity and toughness of the composites.

关 键 词：有机膨润土 PMMA 纳米复合材料 动态力学行为 

分 类 号：TQ330.38[化学工程—橡胶工业] TQ330.7