高效膨胀型阻燃剂阻燃聚丙烯的阻燃机理

The flame retardant mechanism of high-efficiency expandable flame retardant for flame retardant polypropylene

本文采用多聚磷酸铵(APP)、实验室自制三嗪系成炭(CFA),聚丙烯(PP 3080)调整相应比例,采用熔融共混挤出法制备了三元复合材料无卤阻燃聚丙烯,并研究了固定APP和CAF比例为3:1作为复合阻燃剂的前提条件下,分别按照复合阻燃剂和聚丙烯(PP 3080)以20:80、24:76、28:72、32:68的比例制成的三元复合材料对阻燃性能的影响。结果表明,在三元复合阻燃PP体系中,复合阻燃剂添加当加入24%(质量分数)时,与原料PP相比,PHRR、av-EHC、av-SEA分别降低了72.3%、23.4%、44.5%,TPHRR是原料PP的1.89倍,呈现出优异的阻燃效果。

This article uses ammonium polyphosphate(APP),laboratory made triazine based carbonization(CFA),polypropylene(PP 3080),and adjusts the corresponding proportion to prepare a ternary composite material of halogen-free flame-retardant polypropylene by melt blending extrusion method.At the same time,this article studied the effect of ternary composite materials made of composite flame retardant and polypropylene(PP 3080)in the ratios of 20:80,24:76,28:72,and 32:68,with a fixed APP and CAF ratio of 3:1 as the prerequisite for composite flame retardant,on the flame retardant performance.The results showed that in the ternary composite flame retardant PP system,when 24%(mass fraction)composite flame retardant was added,PHRR,av EHC,and av SEA were reduced by 72.3%,23.4%,and 44.5%,respectively,compared to the raw PP.TPHRR was 1.89 times that of the raw PP,showing excellent flame retardant effect.