LDA／APP对聚醚聚氨酯弹性体性能的影响

以聚氧化丙烯二醇（N220）、甲苯二异氰酸酯、一缩二乙二醇等为主要原料，以联二脲（LDA）、聚磷酸铵（APP）作为阻燃剂，研制了聚醚聚氨酯弹性体。研究了LDA／APP含量对弹性体的物理力学性能和阻燃性能的影响结果表明，LDA与聚醚聚酯弹性体的相容性较好，可以大幅度提高其物理力学性能，APP的相容性则相对比较差。两者都可以提高材料的阻燃消烟性能，当LDA／APP以及30／30比例混合时，可以获得较佳的阻燃消烟效果。

Effect of LDA/APP on the Properties of Polyether Polyurethane Elastomer

Polyether polyurethane elastomer was prepared based on polyether polyol,toluene diisocyanate,etc.with LDA/APP as flame retardant.The effects of LDA/APP contents on the mechanical properties and flame retandance were studied.The results showed that LDA had good compatibility with polyether polyurethane elastomer,improved its physical and mechanical properties greatly;but APP's compatibility with the elastomer was worse compared with LDA.Both LDA and APP could improve the flame retardance of the elastomer.When the composition ratio of LDA/APP was 30/30,the flame retardance reached its optimum value.