二季戊四醇磷酸酯三聚氰胺盐的合成及阻燃性能测试

Synthesis and flame retardancy performance of dipentaerythritol phosphate melamine salt

以磷酸、季戊四醇、三聚氰胺为原料,通过酸醇直接酯化和烘焙中和两步反应合成膨胀型阻燃剂二季戊四醇磷酸酯三聚氰胺盐,并对烘焙中和反应条件及其在聚乙烯中的阻燃性能进行了研究。确定最佳合成条件∶n(二季戊四醇磷酸酯)∶n(三聚氰胺)=1∶1;反应温度130-140℃;反应时间3-4h。将此阻燃剂添加到聚乙烯中,样品重量35%时阻燃级别可达UL94V-0级。

Dipentaerythritol phosphate melamine salt was synthesized through esterification and backing neutralization reaction by using pentaerythritol、phosphorus acid and melamine as materials.Then we studied on the neutralization reaction process and flame retardancy.The best synthesis condition is that n（Dipentaerythritol phosphate）∶n（melamine） =1∶1,at 130~140℃ for 3-4h.Adding the sample to polythene,it can improve the flame retardancy of polythene.Vertical combustion level reached UL94V-0 when the addition of the mixed flame-retardant is 35 portions.