MWNT对长玻纤增强PP/膨胀阻燃剂体系性能的影响  

The Effect of MWNTs on LGFPP/IFR Flame Retardant System

作　　者：慈书亭 张景中[1] 罗兴[1] 郭建兵[2] 刘玉春[1] 刘渝 何敏[1] 

机构地区：[1]贵州大学材料与冶金学院,贵州贵阳550025 [2]国家复合改性聚合物材料工程技术研究中心,贵州贵阳550014 [3]贵州凯科特材料有限公司,贵州贵阳550014

出　　处：《塑料工业》2014年第4期68-71,59,共5页China Plastics Industry

基　　金：2013贵州省科学技术基金(黔科合J字[2013]2122号);贵州省科技计划(黔科合GY字[2013]30262012)

摘　　要：用熔融共混法制备了长玻纤增强聚丙烯/膨胀阻燃剂/多壁碳纳米管(LGFPP/IFR/MWNT)复合材料。通过极限氧指数、垂直燃烧测试、热失重分析、力学性能测试等手段研究了MWNT对LGFPP/IFR的阻燃性能、热性能和力学性能的影响。结果表明,MWNT的加入提高了LGFPP/IFR阻燃体系的阻燃性能,在LGFPP/IFR阻燃体系中添加1%MWNT后,LGFPP/IFR/MWNT复合材料的氧指数提高到23.5%;MWNT可显著增加LGFPP/IFR的热稳定性,添加1%MWNT可使LGFPP/IFR热分解起始温度提高12.34℃;MWNT的加入还提高了LGFPP/IFR阻燃体系的力学性能,在LGFPP/IFR阻燃体系中添加1%MWNT后,LGFPP/IFR/MWNT复合材料的拉伸强度、弯曲强度和冲击韧性分别提高了5.7%、12.7%和1.0%。Composites based on long glass fiber reinforced polypropylene （LGFPP）, intumescent flame retardant （IFR） and multi-walled carbon nanotubes （MWNTs） were prepared by melt blending. The effect of MWNTs on the flame retardance, thermal property and mechanical property of the LGFPP/IFRwere studied by LOI, vertical burning test, thermal gravimetric analysis and mechanical property tests. It showed that the addition of MWNTs could improve the flame retardant capacity of LGFPP/IFR flame retardant system. The LOI of LGFPP/IFR/MWNTs composite improved to 23.5% with 1% MWNTs added into LGFPP/IFR flame retardant system. The MWNTs significantly enhanced the thermal stability of LGFPP/IFR. The temperature of onset decomposition was 12.34 ℃ higher than that of LGFPP/IFR for nanoeomposites with 1% of MWNTs loaded. The addition of MWNTs could improve the mechanical properties of LGFPP/IFR flame retardant system. The tensile strength, flexural strength and impact strength was improved by 5.7%, 12.7% and 1.0% with 1% MWNTs added into LGFPP/IFR flame retardant system, respectively.

关 键 词：长玻纤增强聚丙烯 膨胀阻燃剂 多壁碳纳米管 

分 类 号：TQ327.1[化学工程—合成树脂塑料工业]