新型有机膨胀型阻燃剂BTOCPMOM的合成

Synthesis of a Novel Organic Intumescent Flame Retardant BTOCPMOM

以季戊四醇、三氯氧磷、蜜胺和七钼酸铵为原料,通过季戊四醇磷酸酯和八钼酸蜜胺进行复配,合成了新型无卤双羟基磷酸酯八钼酸蜜胺盐(BTOCPMOM)。并采用单因素法确定了其最佳合成工艺:反应温度为100℃、回流时间为6 h。在此工艺条件下,产品的收率达到88.3%。同时,以红外光谱和元素分析对所得产品进行了表征。热重分析和产品阻燃性能测试结果表明:该阻燃剂在热重分析中表现出良好的热稳定性和较高的成碳性;在聚丙烯(PP)中添加所得BTOCPMOM,当w(BTOCPMOM):w(PP)=30:70时,聚合物的氧指数达35.2%,阻燃性能可达UL-94V-0级。

A novel halogen-free double hydroxyl phosphate melamine octomolybdate （BTOCPMOM） was synthesized from pentaerythritol, phosphorus oxychloride, melamine and ammonium heptamolybdate through complex formulation of pentaerythritol phosphate and melamine octomolybdate. The synthesis optimized conditions determined by single factor method were： reaction temperature was 100℃ and reflux time was 6h, and the yield of product reached 88.3%. Molecular structure of BTOCPMOM was identified by PTIR and elemental analysis. The thermogravimetry analysis （TGA） and flame retardant performance test showed that the synthetic products showed good thermal stability and eximious charforming feature. The addition of the BTOCPMOM in Polypropylene as the ratio of w（BTOCPMOM）：w（PP）=30：70 could reach the limiting oxygen index （LOI） value of 35.2% and the flame retardancy of UL-94V-0.