通过均匀沉淀法制备了一种三聚氰胺羟基锡酸盐(MASN)及一种三聚氰胺羟基锡酸盐与羟基锡酸锌的复合物(MAZSN)阻燃剂,通过能量色散谱、傅里叶变换红外光谱及X射线衍射对阻燃剂的组成及结构进行了表征.将新合成的阻燃剂应用于异丙苯基二苯基磷酸酯 (IPP)处理的软聚氯乙烯(PVC)材料,并通过极限氧指数(LOI)和烟密度等级(SDR)测试,研究了MASN及MAZSN对软PVC的阻燃消烟作用.通过热分析的方法及扫描电镜研究了阻燃PVC材料从室温到800℃的降解过程.结果表明,MASN及MAZSN在添加量为30 phr时,可以使软PVC的LOI从30.1％增加至33.3％及38.2％,使SDR从92.87％下降至81.07％及75.06％;MAZSN可以使样品第1降解阶段的失重速率从2.17 mg/min升高到5.44 mg/min,最大失重速率温度312℃提前至267℃,明显促进了PVC的炭化反应.
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