热氧老化时间对PA6/LGF/BEP复合材料性能的影响  

Effects of Thermal-Oxidative Aging Time on Properties of PA6/LGF/BEP

作　　者：田敏[1] 何文涛[2] 祝焕 黄伟江[1] 黄涛[1] 秦舒浩[2] 于杰[1,2] 

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》2016年第3期25-28,共4页Plastics

基　　金：贵州省高层次创新型人才培养项目(黔科合人才[2015]4037号)

摘　　要：探究了160℃温度下不同热氧老化时间对溴化环氧树脂(BEP)阻燃长玻纤增强尼龙6(PA6/LGF/BEP)复合材料性能的影响。通过热重分析(TGA)、氧指数(LOI)及锥形量热仪测试,分析了不同热氧老化时间下PA6/LGF/BEP复合材料的热稳定性、阻燃性能、燃烧性能。结果表明:热氧老化时间的延长对PA6/LGF/BEP复合材料的热稳定性影响不大,但热氧老化时间的延长使复合材料的氧指数由25%降低到23.2%,最大热释放速率由138 kW/m^2增加到316 kW/m^2,火势增长指数由1.31 kW/(m^2·s)增加到3.01 kW/(m^2·s),这表明随着热氧老化时间的延长,该复合材料的阻燃性能下降,火灾安全性逐渐降低。Effects of thermal-oxidative aging conditions with constant temperature （160 ℃ ）but varied time on the properties of long-glass-fiber reinforced polyamide 6 composite retarded by brominated epoxy resin （PA6/ LGF/BEP composite） were investigated. The thermal stability, flame retardancy and flammability of the PA6/LGF/BEP composite aged by varied time were studied by thermogravimetric analysis, limited oxygen index and cone calorimeter tests respectively. The results indicated that the thermal stability of the PA6/LGF/BEP composite were hardly influenced with the thermal-oxidative aging time increasing, but the LOI value of the composite reduced from 25% to 23.2% while the peak heat release rate increased from 138 kW/m^2 to 316 kW/m^2 and fire growth index from 1.31 kW/m^2 to 3.01 kW/m^2 , respectively. It showed that the flame retardancy and safety of the composite deteriorated gradually with thermal-oxidative aging time increasing.

关 键 词：热氧老化 长玻纤增强尼龙6 热性能 阻燃性能 燃烧性能 

分 类 号：TQ323.6[化学工程—合成树脂塑料工业]