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Layered double hydroxide-decorated flexible polyurethane foam: significantly improved toxic effluent elimination

机译：层状双氢氧化物装饰柔性聚氨酯泡沫：显着改善毒性污水消除

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摘要

A layered double hydroxide-based fire-blocking coating was deposited on the surface of a flexible polyurethane foam using a layer-by-layer method to improve its thermal stability, flame retardancy and smoke suppression properties. The assembly process was carried out by alternately submerging a flexible polyurethane foam into chitosan solution, layered double-hydroxide suspension and alginate solution. Analysis of the cone calorimeter data indicated that all the coated flexible polyurethane foam showed a lower peak heat release rate (pHRR), total heat release (THR), peak smoke production rate (pSPR), total smoke release (TSR), peak carbon monoxide (CO) level and peak carbon dioxide (CO2) level compared with the control flexible polyurethane foam. Such a significant improvement in flame retardancy and smoke suppression and a decrease in toxic gas release was ascribed to the physical barrier effect of the layer by layer structure. At the same number of layers, a nickel-aluminum layered double-hydroxide-containing coating performs better than a magnesium-aluminum layered double-hydroxide-filled coating with respect to elimination of toxic effluents from FPUFs.
机译：使用层逐层方法在柔性聚氨酯泡沫表面上沉积层状双氢氧化物的防火涂层，以改善其热稳定性，阻燃性和烟雾抑制性能。通过将柔性聚氨酯泡沫交替将柔性聚氨酯泡沫浸没到脱乙酰壳烷烃，层状双氢氧化物悬浮液和藻酸盐溶液中来进行组装方法。锥形量热计数数据分析表明，所有涂覆的柔性聚氨酯泡沫显示出较低的峰值热释放率（PHRR），总热释放（THR），峰值烟雾生产率（PSPR），总烟雾释放（TSR），峰一氧化碳（CO）水平和峰二氧化碳（CO2）水平与对照柔性聚氨酯泡沫相比。这种显着改善阻燃性和烟雾抑制和毒性气体释放的减少通过层结构归因于层的物理阻隔效应。在相同数量的层中，含镍铝层状双氢氧化物的涂料比来自FPUF的毒性流出物的含镁 - 铝层叠双氢氧化物填充涂层更好。

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  • 来源
    《RSC Advances》 |2015年第118期|共9页
  • 作者

    Liu Lei; Wang Wei; Hu Yuan;

  • 作者单位

    Southeast Univ Sch Mech Engn Nanjing 210096 Jiangsu Peoples R China;

    Univ Sci &

    Technol China State Key Lab Fire Sci Hefei 230026 Anhui Peoples R China;

    Univ Sci &

    Technol China State Key Lab Fire Sci Hefei 230026 Anhui Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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