Thermal gravimetric analysis(TGA), FTIR, Limited oxygen index(LOI) and vertical firing test are used to research the flame retardancy of the intumescent flame retardant on PP.
采用热重分析（TGA）、红外光谱分析（FTIR）、氧指数测定和垂直燃烧实验，研究了所合成的膨胀型阻燃剂对聚丙烯的阻燃作用。
By means of the test of LOI (limited oxygen index), it is showed that composites have good flame-retardant characteristics and expanded graphite has less contribution to the flame -retardant effect.
通过对复合材料的氧指数测定表明，添加了可膨胀石墨的复合材料具有良好的阻燃特性，但膨胀石墨对于复合材料的阻燃效应贡献甚微。
By means of the test of LOI (limited oxygen index), it is showed that composites have good flame-retardant characteristics and expanded graphite has less contribution to the flame -retardant effect.
通过对复合材料的氧指数测定表明，添加了可膨胀石墨的复合材料具有良好的阻燃特性，但膨胀石墨对于复合材料的阻燃效应贡献甚微。
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