HIPS/OMMT复合材料阻燃性能的研究  

Flame Retardancy of HIPS/OMMT Composites

作　　者：王立春[1] 张军[1] 黄青松[1] 陆晓东[1] 

机构地区：[1]青岛科技大学橡塑材料与工程教育部重点实验室,266042

出　　处：《现代塑料加工应用》2006年第1期15-18,共4页Modern Plastics Processing and Applications

基　　金：国家自然科学基金资助项目(基金号 50176021)国家重点基础研究专项经费资助项目(项目号 2001CB409600)。

摘　　要：采用挤出工艺、熔融插层法制备了高抗冲聚苯乙烯／有机蒙脱土(HIPS／OMMT)复合材料。通过X射线衍射仪和扫描电镜研究蒙脱土和复合材料的微观结构,发现OMMT的层间距由改性前的1.52 nm增大到2．25 nm,复合材料中的 OMMT片层被剥离开来,与HIPS基体形成了剥离型的复合材料。用基于耗氧原理的锥形量热仪测试并分析HIPS／OM MT复合材料的阻燃性能。结果表明,与纯的HIPS相比,HIPS／OMMT复合材料的热释放速率及其峰值、质量损失速率均明显降低,且随OMMT添加量的增加,复合材料的热释放速率峰值降低愈明显;通过对复合材料的阻燃性能和微观结构的分析,探讨了其阻燃机理。Using the extruding technology, high impact polystyrene/organic-montmorillonite （HIPS/OMMT） composites were prepared by melt intercalation. The microstructure of montmorillonite and the composites was characterized utilizing X-ray diffractameter and scanning electron microscope. It is found that the spacing distance between the layers of OMMT is increased to 2.25 nm from 1.52 nm of Na＋-MMT, while the layers of OMMT are delaminated in the matrix of HIPS. The flame retardancy of the HIPS/OMMT composites was evaluated by oxygen consumption cone calorimeter. The results show that the heat release rate, the peak heat release rate and the mass loss rate of the composites are all reduced markedly in comparison with pure HIPS. The peak heat release rate decreases gradually with the increasing of OMMT contents. Through the analysis of the microstructure and flame retardancy of the composites, the flame-retardant mechanism is discussed.

关 键 词：锥形量热仪 高抗冲聚苯乙烯 有机蒙脱土 复合材料 阻燃性 

分 类 号：TQ323[化学工程—合成树脂塑料工业]