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阻燃协效剂与膨胀型阻燃剂在木粉/聚丙烯复合材料中的阻燃协效性

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Keywords: 木粉/聚丙烯复合材料,膨胀型阻燃剂,阻燃协效剂,热分析,协效性

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Abstract:

采用膨胀型阻燃剂(IFR)分别与蒙脱土(MMT)、硼酸锌(ZB)、MnO2阻燃协效剂复配制备了阻燃型红松木粉/聚丙烯复合材料。借助TG、DTG、DSC热分析技术深入探讨了IFR与阻燃协效剂间的协效性;并利用FTIR、SEM对协效性进行了验证。结果表明:三种阻燃协效剂与IFR间都存在一定的协效性;MMT的加入降低了热分解过程的热释放量,并显著提高了材料的残炭量;ZB的协效性主要体现在热分解的第二阶段,并使最终的残渣呈现出一种泡状结构;而MnO2主要在热分解的第一阶段发挥作用,可催化聚磷酸铵(APP)提前分解,同时降低体系的热解速率,并使残渣致密化。

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