In order to develop high-performance one-component polyurethane foam sealant, influences of composition of mixed polyether, amount of flame retardant, amount of catalyst, and the molar ratio of isocyanate to hydroxyl on properties of one-component polyurethane foam sealant were studied. And the optimum combination of raw materials was obtained. The results show that the excellent one-component polyurethane foam sealant with fast curing, high strength, good dimensional stability and low temperature foaming performance can be prepared under the optimum conditions.% 为研制出综合性能优异的单组分聚氨酯泡沫填缝剂，对混合聚醚的组成、阻燃剂加入量、催化剂加入量及异氰酸根与羟基的摩尔比对单组分聚氨酯填缝剂性能的影响进行了系统的研究，最终优选出了最佳组合，研制出了快固化、高强度、尺寸稳定性好及优良的低温发泡性能的综合性能优异的单组分聚氨酯泡沫填缝剂。
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