含单羟乙基蜜胺的阻燃剂的碳化及阻燃作用

Carbonization and Flame Retardation of A Flame Retardant Containing Monohydroxyethyl Melamine

用热重分析法研究了以多聚磷酸铵和单羟乙基蜜胺复配的膨胀型阻燃剂（ＩＦＲ）的碳化及其对聚丙烯（ＰＰ）的阻燃作用．结果表明，ＩＦＲ和空气中的氧参与了ＰＰ的热分解反应，促进其生成了对热比较稳定的富碳物质，使热重残余率增加．但燃烧结果指出，ＩＦＲ－ＰＰ阻燃体系的阻燃性能主要取决于ＩＦＲ的组成。

Thermogravimetric analysis was used to study the carbonization and flame retardation of an intumescent flame retardant(IFR) containing monohydroxyethyl melamine. Results showed that the IFR and the oxygen in air took part in the decomposition reaction of polypropylene and promoted it to form more thermostable carbon rich materials, leading to the increase of thermogravimetric residual ratio. However, burning tests showed that higher residual ratio and char yield did not mean better flame retardation for the IFR PPs with the same IFR content but different IFR composition.The flame retardation of the IFR PPs depended mainly on the composition of the IFR. It was found that the optimum composition of the IFR for flame retardation of PP was 1∶5 by mass for monohydroxyethyl melamine and ammonium polyphosphate.