玻璃纤维对高抗冲聚苯乙烯阻燃性能的影响

Effect of Glass Fiber on Flame Retardancy of High Impact Polystyrene

以玻璃纤维(GF)为增强剂、高抗冲聚苯乙烯(HIPS)为基体,制备了一系列HIPS/GF复合材料,采用极限氧指数、锥形量热分析、扫描电镜、热重分析等方法研究了复合材料的燃烧性能。结果表明:GF的添加能使HIPS材料的极限氧指数有所提高,但其影响并不显著。随着GF用量的增加,HIPS/GF复合材料的热释放速率、总热释放量、总烟释放量和CO释放量均明显降低,同时表现出较好的阻燃和抑烟性能。GF的最佳用量约为30%,过多的GF并不能进一步提高HIPS材料的阻燃和抑烟性能。GF含量越高,HIPS/GF复合材料的质量损失速率越小,而GF的存在对HIPS的热分解行为影响很小。

A series of glass fiber(GF) reinforced high impact polystyrene(HIPS) composites were prepared. The combustion behavior of the composites was studied by limiting oxygen index, cone calorimetry, scanning electron microscopy and thermogravimetry. The results indicate that the addition of GF can increase the limiting oxygen index of HIPS to some degree, but the effect is not significant. The heat release rate, total heat release, total smoke release and CO yield of the HIPS/GF composites all decrease with the rise of GF content and the composites display good flame-retarding and smokesuppressing properties simultaneously. The optimal dosage of GF is around 30%, and excessive GF cannot further increase the flame retardancy and smoke suppression of HIPS. The higher the dosage of GF is, the smaller the mass loss rate of the composite is, and the presence of GF has very slight influence on the thermal degradation behavior of HIPS.