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首页> 外文期刊>RSC Advances >Nitrogen/phosphorus synergistic flame retardant-filled flexible polyurethane foams: microstructure, compressive stress, sound absorption, and combustion resistance
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Nitrogen/phosphorus synergistic flame retardant-filled flexible polyurethane foams: microstructure, compressive stress, sound absorption, and combustion resistance

机译：氮/磷协同阻燃填充的软质聚氨酯泡沫：微观结构，压缩应力，吸声和耐燃烧性

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Compared with a rigid polyurethane foam, a flexible polyurethane foam (FPUF) has more diversified applications including filtration, sound absorption, vibration-proofing, decoration, packaging, and heat insulation. However, its most potential hazard is flammability. Therefore, in this study, we focused on improving its flame retardation and then tested its sound absorption with the addition of nitrogen/phosphorus synergistic flame retardants. The influence of phosphorus-based flame retardants (TCPP, TDCP, and V6) and a nitrogen/phosphorus synergistic flame retardant (melamine-TDCP) on its microstructure, compressive stress, sound absorption, thermal stability, and flame retardation was systematically explored. The presence of phosphorus flame retardants improved the sound absorption but considerably decreased the mechanical properties. The melamine-TDCP compound flame retardant delivered smaller cells and thus increased the compression property of the resulting foam. Moreover, with a higher content of melamine, the initial mass-loss temperature also increased. In particular, on using TDCP and 5 wt% of melamine as flame retardants, the compressive stress increased by 3.4 times, the average sound absorption coefficient was 0.45, and LOI reached 25.5, which met the requirements of industrial flame retardant/sound absorbent materials. This resultant flame retardant/sound absorbent flexible polyurethane foam can serve as a mattress and furniture pad material, vehicle seat cushion material, and liner for laminated composites in the future.
机译：与硬质聚氨酯泡沫相比，软质聚氨酯泡沫（FPUF）具有更多样化的应用，包括过滤，吸声，防震，装饰，包装和隔热。但是，其最潜在的危害是易燃性。因此，在这项研究中，我们着重于改善其阻燃性，然后通过添加氮/磷协同阻燃剂来测试其吸声性能。系统地研究了磷基阻燃剂（TCPP，TDCP和V6）和氮/磷协同阻燃剂（三聚氰胺-TDCP）对其微观结构，压缩应力，吸声，热稳定性和阻燃性的影响。磷阻燃剂的存在改善了吸声性能，但大大降低了机械性能。三聚氰胺-TDCP复合阻燃剂可释放较小的泡孔，从而提高所得泡沫的压缩性能。而且，随着三聚氰胺含量的增加，初始质量损失温度也增加。特别是使用TDCP和5wt％的三聚氰胺作为阻燃剂时，压应力提高了3.4倍，平均吸声系数为0.45，LOI达到25.5，满足了工业阻燃/吸声材料的要求。这种最终的阻燃/吸声柔性聚氨酯泡沫可在将来用作床垫和家具垫材料，汽车座垫材料以及层压复合材料的衬里。

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