红磷阻燃LGFPP复合材料的热氧老化性能研究  

Study on Thermo-oxidative Aging Properties of LGFPP/RP Flame Retardant System

作　　者：慈书亭 郭建兵[2] 魏涛[1] 黄涛[1] 张道海[2] 吴斌[2] 

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

出　　处：《塑料科技》2014年第10期55-59,共5页Plastics Science and Technology

摘　　要：利用熔融共混法制备了长玻纤增强聚丙烯/红磷(LGFPP/RP)阻燃复合材料。采用热烘箱老化法分析了140℃条件下不同热氧老化时间对LGFPP/RP阻燃体系热氧老化性能的影响;并通过氧指数(OI)、垂直燃烧、热性能和力学性能测试对LGFPP/RP阻燃体系的阻燃性能、热稳定性和力学性能进行了研究。结果表明:随着热氧老化时间的延长,LGFPP/RP阻燃体系的OI值呈先增大后减小的趋势,且垂直燃烧等级始终保持在FV-0级;同时,LGFPP/RP阻燃体系的最大质量损失速率所对应的温度(Tmax)变化不大,体系的起始分解温度(T5%)则呈现出先升高后下降的趋势。另外,经热氧老化后,试样的力学性能显著下降。The long glass fiber reinforced polypropylene/red phosphorus（LGFPP/RP） flame retardant composites were prepared by melt blending method.The thermal-oxidative aging properties of the LGFPP/RP flame-retardant system with different thermal exposure time at 140℃ were studied by means of heat oven aging method.The flame retardancy,thermal stability and mechanical properties of the LGFPP/RP flame-retardant system were investigated by the tests of oxygen index（OI）,vertical burning,thermal gravimetry（TG） and mechanical property.The results show that： with the prolongation of aging time,the OI value of the LGFPP/RP system increases at first and then decreases,and vertical burning rating remains FV-0; Meanwhile,the corresponding temperature of maximum weight loss rate（Tmax） of the LGFPP/RP system remains nearly unchanged,but the initial decomposition temperature（T5%） increases at first and then decreases.In addition,the mechanical properties of the samples decrease significantly after thermal aging.

关 键 词：长玻纤增强聚丙烯 无卤阻燃 红磷 复合材料 热氧老化 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]