HIPS/OMMT复合材料炭层结构对阻燃性能影响  

The Effect of the Char Structure on the Flame Retardancy of HIPS/OMMT Composites

作　　者：肖凤艳[1] 张军[1] 于健[1] 

机构地区：[1]青岛科技大学教育部橡塑材料与工程重点实验室,山东青岛266042

出　　处：《现代塑料加工应用》2009年第6期12-15,共4页Modern Plastics Processing and Applications

基　　金：青岛科技计划基础研究项目(09-1-3-26-jch)资助

摘　　要：采用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。采用锥形量热仪(CONE)研究了复合材料的阻燃性能,采用数码相机、扫描电镜(SEM),DBP吸油值法、气体吸附法等对复合材料燃烧后炭渣残余物结构进行了分析。结果表明,与纯HIPS相比,HIPS/OMMT复合材料的热释放速率(HRR)及其峰值显著降低;OMMT含量增加,炭渣粗结构和细结构的空隙率均降低;结合试验结果进行的理论分析表明,炭层结构对HIPS/OMMT复合材料阻燃性能的影响非常明显,炭渣的致密度越高,阻燃性能越好。HIPS/OMMT composites were prepared by melting intercalation. The flame retardancy of the composites was evaluated by the cone calorimeter （CONE）. The structure of the char residue for HIPS/OMMT nanocomposites was studied by the digital camera, scanning electron microscopy （SEM）, DBP oil absorption and gas adsorption techniques. The results show that HRR and its peak value for HIPS/OMMT composites reduce in comparison with pure HIPS. The interstice ratios for both the coarse structure and the fine structure of char residue augment when the mass fraction of the OMMT increase. The structure of char residue has a significant effect on the flame retardancy of the composites. The flame retardancy of the composites is improved as the relative char density increase.

关 键 词：高抗冲聚苯乙烯 有机蒙脱土 炭层结构 空隙率 阻燃性能 

分 类 号：TQ325.2[化学工程—合成树脂塑料工业] TB33[一般工业技术—材料科学与工程]