PMMA/OMMT纳米复合材料炭层结构对阻燃性能的影响  

Effect of Fire Residue of PMMA/OMMT on Flame Retardant Performance Nanocomposites

作　　者：黎宴良 张军[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：《现代塑料加工应用》2013年第6期1-4,共4页Modern Plastics Processing and Applications

基　　金：山东省自然科学基金(ZR2012EMQ008)资助

摘　　要：通过熔融插层方法制备了聚甲基丙烯酸甲酯(PMMA)与有机蒙脱土(OMMT)的纳米复合材料。采用X射线衍射(XRD)和透射电镜(TEM)分析了聚合物插层OMMT的微观结构,采用锥形量热仪评价了复合材料的阻燃性能,通过数码相机、扫描电镜(SEM)分别观察了材料燃烧后生成残余物的宏观、亚微观和微观结构。结果表明:OMMT能显著降低材料的热释放速率(HRR)和质量损失速率(MLR);PMMA/OMMT纳米复合材料燃烧中形成的炭层具有特殊的皮层-蜂窝层亚微观结构,降低了材料的可燃性。The nanocomposites of PMMA and OMMT were prepared through the melt intercalation method. The microstructure of OMMT which was intercalated by PMMA was analysed by XRD and TEM. The flame retardancy of the composites was evaluated by the cone calorimeter. Digital camera and SEM were used to examine the macro-structure, submicro-structure and micro-structure of residues. The results show that HRR and MLR of the composites with the addition of OMMT are reduced signifi- cantly. It also shows that the fire residue of PMMA/OMMT is composed of a skin-cel- lular layer in submicro scale. The well combination of the skin-cellular layer can reduce flammability of the composites.

关 键 词：聚甲基丙烯酸甲酯 有机蒙脱土 纳米复合材料 炭层结构 阻燃性能 

分 类 号：TB33[一般工业技术—材料科学与工程] TB383.1