HIPS阻燃复合材料三元潜在火灾危险性评价

Journal of Safety and Environment(2017)

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Abstract
将高抗冲聚苯乙烯树脂颗粒(纳米/微米级)、十溴二苯乙烷颗粒、三氧化二锑、弹性体、分散剂和偶联剂通过一步熔融共混工艺先行制备UL94 V-0级阻燃母粒,再将其与HIPS本体树脂按不同比例混合制得阻燃复合材料,并利用极限氧指数(LOI)、垂直燃烧(UL94)及ISO 5660锥形量热计三项测试表征制得样品的燃烧和火灾性能,从中提炼和分析LOI、垂直燃烧等级和最大热释放速率(PkHRR)等三元关键指标相关性,给出了定性定量相结合的潜在火灾危险性分级范围.结果表明:UL94燃烧等级和PkHRR相关性体现为当PkHRR≤330.0 kW/m2时,试样UL94等级均为V-0级;UL94燃烧等级和LOI相关性体现为随UL94燃烧等级从V-0降到HB时,试样LOI从27.0降到17.0;PkHRR与LOI相关性体现为PkHRR与LOI呈粗略反向线性相关性;UL94燃烧等级、PkHRR和LOI三元相关性体现为当LOI<22.0、PkHRR为399.0~665.0 kW/m2时,材料UL94燃烧等级介于HB ~V-2.
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Key words
safety engineering,potential fire hazard accessment,high impact polystyrene,flame retardant composite,peak heat release rate,UL94 vertical burning rating,limiting oxygen index,the 3D index systems,safety,health and environment effects of nannosized mater
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