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.
出处
《塑料科技》
CAS
北大核心
2014年第10期55-59,共5页
Plastics Science and Technology
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
Long glass fiber reinforced polypropylene
Halogen-free flame retardant
Red phosphorus
Composite
Thermal-oxidative aging
