乳液法PVC/Na^+-MMT纳米复合材料的结构表征及性能研究  

STUDIES ON THE MORPHOLOGY AND PROPERTIES OF PVC/Na^+-MMT NANOCOMPOSITES PREPARED BY in situ EMULSION POLYMERIZATION

作　　者：石旭东[1] 潘明旺[1] 李秀错[1] 张留成[1] 丁会利[1] 

机构地区：[1]河北工业大学高分子科学与工程研究所,天津300130

出　　处：《高分子学报》2004年第1期149-152,共4页Acta Polymerica Sinica

基　　金：河北省自然科学基金资助项目(基金号 50 0 0 17);教育部高等学校骨干教师资助项目;河北省教育厅博士基金项目

摘　　要：Nanocomposites were prepared by a simple technique of emulsion polymerization using VC monomer and Na + montmorillonite. The nano structure of the composites was studied with the aid of X ray diffraction and t ransmission electron microscopy,and the mechanical and thermal properties of th e composites were also tested. The results showed that the silicate layers were delam inated or partially exfoliated in the PVC matrix. The impact strength of the mat erial with 2 1% MMT was almost two times as high as that of pure PVC, while the tensi le strength decreased little. However, the mechanical strength of the composites began to decrease with further increasing the amount of MMT. The TGA resul ts showed that the temperature,at which a 50% weight loss of the composites occurred,was higher than that of pure PVC. The vicat softening temperatures of composites were enhanced with increasing MMT content.Nanocomposites were prepared by a simple technique of emulsion polymerization using VC monomer and Na + montmorillonite. The nano structure of the composites was studied with the aid of X ray diffraction and t ransmission electron microscopy,and the mechanical and thermal properties of th e composites were also tested. The results showed that the silicate layers were delam inated or partially exfoliated in the PVC matrix. The impact strength of the mat erial with 2 1% MMT was almost two times as high as that of pure PVC, while the tensi le strength decreased little. However, the mechanical strength of the composites began to decrease with further increasing the amount of MMT. The TGA resul ts showed that the temperature,at which a 50% weight loss of the composites occurred,was higher than that of pure PVC. The vicat softening temperatures of composites were enhanced with increasing MMT content.

关 键 词：聚氯乙烯 钠基蒙脱土 纳米复合材料 乳液聚合 结构表征 通用塑料 热稳定 力学性能 微观结构 

分 类 号：TQ325[化学工程—合成树脂塑料工业]