HIPS阻燃复合材料三元潜在火灾危险性评价

发布时间：2018-07-24 08:20

【摘要】：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(Pk HRR)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Pk HRR相关性体现为当Pk HRR≤330.0 k W/m~2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;Pk HRR与LOI相关性体现为Pk HRR与LOI呈粗略反向线性相关性;UL94燃烧等级、Pk HRR和LOI三元相关性体现为当LOI22.0、Pk HRR为399.0~665.0 k W/m~2时,材料UL94燃烧等级介于HB~V-2。
[Abstract]:UL94 V-0 flame retardant masterbatch was prepared by one-step melt blending of high impact polystyrene resin particles (nanometer / micron), decabromodiphenylethane, antimony trioxide, elastomer, dispersant and coupling agent. The flame retardant composites were prepared by mixing it with HIPS bulk resin in different proportions. The combustion and fire properties of the samples were characterized by using the limiting oxygen index (LOI),) vertical combustion (UL94) and the conical calorimeter (ISO 5660). The correlation between loi, vertical combustion grade and maximum heat release rate (HRR) is analyzed, and the range of potential fire hazard classification combined with qualitative and quantitative analysis is given. The results show that the correlation between the combustion grade of U UL94 and the competing HRR is that when the HRR of the sample is less than 330.0 kW / m2, the UL94 grade of the sample is V-0 grade and the LOI correlation is that the UL94 grade decreases from V-0 to HB with UL94. The correlation between LOI and LOI in the samples decreased from 27.0 to 17.0 渭 k HRR was shown as follows: the linear correlation between HRR and LOI was roughly reverse linear, the correlation between k HRR and LOI was as follows: the combustion grade of UL94 was between HBV-2 and HBV-2 when the k HRR was 399.00.665.0 kW / m ~ 2.
【作者单位】：南京工业大学安全科学与工程学院江苏省城市与工业安全重点实验室;南京工业大学火灾与消防工程研究所;中国科学技术大学火灾科学国家重点实验室;
【基金】：国家自然科学基金项目(51376089)
【分类号】：X932

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