以无卤的有机阻燃剂甲基膦酸二甲酯(DMMP)和无机阻燃剂氢氧化铝[Al(OH)3]为研究对象,研究了2种不同类型阻燃剂单独使用以及复配使用对阻燃性能的影响.结果表明,有机阻燃剂DMMP单独添加时较无机阻燃剂Al(OH)3单独添加时的阻燃性能更显著;有机-无机无卤阻燃剂复合使用时达到了阶梯式协同阻燃的效果,当DMMP和Al(OH)3按照4∶2的比例加入时,聚氨酯泡沫塑料的极限氧指数可达28.5％,有机-无机无卤复配阻燃剂试样的热稳定性明显好于不添加阻燃剂的样品.%This study focuses on flame retardanting effects of dimethyl methylphosphonate (DMMP)and Al(OH)3 as two reprehensive types of organic and inorganic halogen-free flame retardants.The experimental results indicated that the flame-retardant effect of DMMP is more effective than that of Al (OH)3 when being used alone.A combination of the organic and inorganic flame retardants could generate a gradient synergistic effect on flame retardancy when the mass ratio of DMMP and Al(OH)3 was set to 4 ∶2.The resulting flame-retardant polyurethane foam achieved an oxygen index of 28.5 ％,and its thermal stability was much better than that of pristine polyurethane foam.
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