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将聚磷酸铵(APP)作为阻燃剂,加入到环氧树脂E44(EP)中,固化剂选用聚酰胺200#,制备出的阻燃环氧固化物具有一定的阻燃性能,研究结果表明聚磷酸铵(APP)与环氧树脂E44具有很好的相容性,阻燃效果较好。当加入聚磷酸铵达到20份的时候,阻燃环氧树脂的极限氧指数达到33.4%。并通过对制备的阻燃环氧树脂进行极限氧指数(LOI)、热失重分析(TGA)、动态热机械分析仪(DMA)、扫描电镜(SEM)等方面的分析,对环氧树脂固化物的阻燃机理进行了深入的研究。
Ammonium polyphosphate (APP) as a flame retardant, epoxy resin is added to the E44 (EP), the curing agent selected polyamide 200 #, prepared flame retardant epoxy curing has certain flame retardant properties, the results show that Ammonium polyphosphate (APP) has good compatibility with epoxy resin E44 and has good flame retardant effect. When adding 20 parts of ammonium polyphosphate, the limit oxygen index of flame-retardant epoxy resin reached 33.4%. The flame retardant epoxy resin prepared by the analysis of the limit oxygen index (LOI), thermogravimetric analysis (TGA), dynamic thermomechanical analyzer (DMA), scanning electron microscopy (SEM) and other aspects of the epoxy resin cured The flame retardant mechanism conducted in-depth study.