结构型阻燃聚醚多元醇对聚氨酯硬质泡沫阻燃性能的影响

用含磷氮元素的结构型阻燃聚醚多元醇制备硬质聚氨酯泡沫,考察了结构型阻燃聚醚的用量对泡沫物理性能和阻燃性能的影响。结果表明结构型阻燃聚醚加入使泡沫的压缩强度、尺寸稳定性和氧指数均有明显的提高;当结构型阻燃聚醚的质量占聚醚用量的30%,添加适量的混合阻燃剂时,其氧指数达32%以上;此外,在同一阻燃要求下结构型阻燃泡沫制品的阻燃剂添加量明显减少,但泡沫的各项性能得到显著提高。

Influence of Structural Flame Retardant Polyether Polyols on Flame Retardant Performance of Rigid Polyurethane Foam

The rigid polyurethane foams were prepared by using structural flame retardant polyether polyols containing phosphorus and nitrogen elements.The influence of the structural flame retardant polyether amounts on the physical and flame retardant performance of the foams was investigated.The results show that the compression strength,size stability and oxygen index of the foams significantly increase by adding the structural flame retardant polyether.When the mass of the structural flame retardant polyether in the total mass of the polyether is 30%,and the additive amount of the mixed flame retardant is appropriate,its oxygen index reaches more than 32%.In addition,the additive amount of the flame retardant in the structural flame retardant foam articles under the same flame retardant specifications significantly decreases,but various properties of the foams obviously increase.