
新型膨胀型阻燃剂-硼酸锌复合体系对聚苯乙烯阻燃性能的影响
陈驹, 刘钦勇, 李洪飞, 孙军, 谷晓昱, 张胜
新型膨胀型阻燃剂-硼酸锌复合体系对聚苯乙烯阻燃性能的影响
Effect of Novel Intumescent Flame Retardant-Zinc Borate System on Flame Retardancy of Polystyrene
为了提高聚苯乙烯(PS)的阻燃性能,降低其燃烧过程中的热释放和烟雾释放,通过静电自组装法制备一种新型阻燃剂(MAP),并将MAP-聚磷酸铵(APP)-季戊四醇(PER)组成的新型膨胀型阻燃剂(N-IFR)与硼酸锌(ZB)复配后添至PS中。结果表明:PS-22%N-IFR/1%ZB复合材料的极限氧指数提高至28.3%,垂直燃烧测试达到UL-94 V-0等级。与纯PS相比,其峰值热释放速率、总热释放量和总烟释放量分别下降67.6%、11.8%和25.9%。ZB与N-IFR的协同阻燃作用促进了高质量炭层的形成,并有效抑制了PS基体的热释放与烟释放。
To enhance the flame retardancy of polystyrene (PS), reducing its heat and smoke release during combustion, a novel flame retardant (MAP) was prepared via electrostatic self-assembly, and the new intumescent flame retardant (N-IFR) composed of MAP-polyphosphoric ammonium (APP)-pentaerythritol (PER) was compounded with zinc borate (ZB) and added to PS. The results showed that the limiting oxygen index of PS-22%N-IFR/1%ZB composites increased to 28.3%, achieving UL-94 V-0 rating in vertical burning tests. Compared to pure PS, the peak heat release rate, total heat release, and total smoke production decreased by 67.6%, 11.8% and 25.9%, respectively. The synergistic flame retardant effect of ZB and N-IFR promoted the formation of a high-quality char layer and effectively suppressed the heat and smoke release of the PS.
静电自组装 / 聚苯乙烯 / 膨胀型阻燃 / 硼酸锌 / 协同阻燃
Electrostatic self-assembly / Polystyrene / Intumescent flame retardant / Zinc borate / Synergistic flame retardancy
TB332 / TQ325.2
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