A highly efficient flame-retardant hybrid foam material combining expandable polystyrene foam beads and a waterborne resin equipped with inorganic flame retardants is described. The resin and the inorganic fillers were varied, and the different compositions were investigated in small burner and cone calorimeter tests. The burning time during the small burner test decreases from >60 s for neat expandable polystyrene to 0 s for optimized hybrid specimens. The peak of the heat release rate decreases from 661.0 kW/m2 for neat expandable polystyrene to 121.36 kW/m2 for a hybrid composition of 1:1:1 (expandable polystyrene:aluminum hydroxide:phenol formaldehyde resin). The hybrid materials containing inorganic flame retardants are burning slower and release heat and smoke more constantly at significantly lower rates. Furthermore, a continuous network of the cured thermoset is shown, which leads to embedded expandable polystyrene beads. The flame-retardant thermoset protects the expandable polystyrene from fire and leads to a material with high dimensional stability and efficient flame retardancy.

中文翻译：

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基于可发性聚苯乙烯珠粒的阻燃混合材料

描述了一种高效的阻燃混合泡沫材料，它结合了可发性聚苯乙烯泡沫珠和带有无机阻燃剂的水性树脂。树脂和无机填料各不相同，并在小型燃烧器和锥形量热仪测试中研究了不同的组成。小型燃烧器测试期间的燃烧时间从纯可发性聚苯乙烯的 >60 秒减少到优化混合样品的 0 秒。热释放率的峰值从纯可发性聚苯乙烯的 661.0 kW/m2 降至 1:1:1（可发性聚苯乙烯：氢氧化铝：苯酚甲醛树脂）的混合组合物的 121.36 kW/m2。含有无机阻燃剂的混合材料燃烧速度较慢，并且以显着较低的速率更稳定地释放热量和烟雾。此外，显示了固化热固性塑料的连续网络，这导致嵌入可发性聚苯乙烯珠粒。阻燃热固性材料保护可发性聚苯乙烯免受火灾，并导致材料具有高尺寸稳定性和高效阻燃性。