埃洛石纳米管对膨胀阻燃聚丙烯阻燃性能的影响  

Effect of Halloysite on Flame Retardancy Intumescent Flame Retardant Modified Polypropylene

作　　者：刘喜山[1] 谷晓昱[1] 姜鹏[1] 李玉玲[1] 张胜[1] 

机构地区：[1]北京化工大学教育部碳纤维及功能高分子材料重点实验室,北京100029

出　　处：《中国塑料》2013年第2期86-89,共4页China Plastics

摘　　要：以聚磷酸铵(APP)和季戊四醇(PER)为膨胀阻燃体系(IFR)制备了含有埃洛石纳米管(HNTs)的无卤膨胀阻燃聚丙烯(PP)复合材料。通过极限氧指数和热失重分析仪(TGA)以及锥形量热仪(CONE)研究了天然纳米材料埃洛石纳米管(HNTs)的加入对膨胀阻燃PP阻燃性能与热稳定性的影响,并通过扫描电镜(SEM)对残炭形貌进行了观察和分析。结果表明,加入2份(质量分数,下同)的HNTs后,材料的极限氧指数提高到32%,达到UL-94V0级别,热释放速率降低到222kW/m2,加入HNTs后形成的炭层结构更致密,阻燃效果更好。Halloysites were introduced into PP/IFR composites containing ammonium polyphosphate （APP） and pentaerythritol （PER）. Limiting oxygen index, cone calorimeter test （CCT）, and thermal gravimetrie analysis （TGA） were carried out to characterize the flammability and thermal behavior of PP composites. The morphology of the char was observed and analyzed by scanning electron microscope （SEM）. It was found that there existed a synergism between IFR and halloysite in improving the fire performance of PP. The composite containing 2 phr HNTs had a limiting oxygen index of 32 %, the UL-94 grade reached V0 level and heat release rate （HRR） reduced to 222 kw/m^2. HNTs of 2 phr was the optimal loading in the composites and could provide the best flame retardant result.

关 键 词：聚丙烯 埃洛石纳米管 无卤阻燃 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]