以实验室自制的无机纳米粒子镁铝锌镧碳酸根型层状双羟基氧化物(MgAlZnLa-CO3 LDHs)为协效剂,以聚磷酸铵(APP)和三聚氰胺(MA)为复配膨胀阻燃剂(IFR),与聚丁二酸丁二醇酯(PBS)熔融共混制备了PBS膨胀阻燃体系;利用锥形量热仪在25 kW/m2的热辐射条件下,研究了MgAlZnLa-CO3 LDHs对PBS膨胀阻燃体系动态燃烧行为的影响.结果表明,MgAlZnLa-CO3 LDHs的加入不仅明显降低了PBS膨胀阻燃体系的热释放速率(HRR)、烟生成速率(SPR)、质量损失速率(MLR),而且CO的释放量也得到了很好的控制,提高了体系的火灾性能指数(FPI).MgAlZnLa-CO3 LDHs明显抑制了PBS膨胀阻燃体系的动态燃烧行为,同时表现出与膨胀阻燃剂良好的协效作用.
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