HIPS/OMMT复合材料炭渣结构对阻燃性能的影响  

Effect of Char Residue Structure on the Flame Retardant Property HIPS/OMMT Composites

作　　者：白卯娟[1] 张军[1] 刘岩[1] 肖凤艳[1] 

机构地区：[1]青岛科技大学环境与安全工程学院,山东青岛266042

出　　处：《塑料工业》2011年第12期68-71,共4页China Plastics Industry

基　　金：国家自然科学基金资助项目(50876048);青岛市计划基础研究项目(09-1-3-26-jch)

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)和高抗冲聚苯乙烯/蒙脱土(HIPS/MMT)复合材料,并通过锥形量热仪评价了复合材料的阻燃性能;采用数码相机、扫描电镜(SEM)观察了燃烧残余物结构,对残余物结构进行了热重(TGA)分析。结果表明:OMMT的加入显著提高了复合材料以热释放速率表征的阻燃性能,而HIPS/MMT复合材料的阻燃性能提高不明显;HIPS/OMMT纳米复合材料燃烧热释放速率峰值时形成了皮窝复合炭渣结构,皮层组分主要为硅酸盐及部分难分解的碳质物质,热稳定性较高,窝层起膨胀炭层的作用,二者共同起阻燃作用。The HIPS/OMMT and HIPS/MMT composites were prepared through the melting intercalated method. The flame retardancy was evaluated by the cone calorimeter. The structure of burnt residues was observed by digital camera, SEM and TGA. The experimental results showed that the heat release rate （HRR） for HIPS/OMMT nanocomposites was significantly reduced, while flame retardancy property of HIPS/MMT composites improved a little. The residue of HIPS/OMMT burning at the burning release peak was composed of skin layer and cellular layer. The skin layer was composed of mainly montmorillonite with small quantity of earbonouse char, leading to better thermal stability. The cellular layer considerably augmented the thickness of the residue. Both of the two structure residues had a great effect on the flame retardancy of the composites.

关 键 词：高抗冲聚苯乙烯 有机蒙脱土 纳米复合材料 皮窝结构 阻燃性能 

分 类 号：TB332[一般工业技术—材料科学与工程]