有机硅偶联剂改性聚氨酯密封胶研究进展

Research progress of polyurethane sealant modified by organosilicon coupler

对聚氨酯(PU)密封胶、硅酮密封胶、有机硅偶联剂改性PU密封胶各自的性能、特点作了对比分析,介绍了有机硅偶联剂改性PU预聚体的合成方法以及合成原料对密封胶性能的影响。

The performances and characteristics between polyurethane（PU） sealant,silicone sealant and PU sealant modified by organosilicon coupler were compared and analysed.The synthesis methods of PU prepolymer modified by organosilicon coupler and the influences of raw materials on the sealant performances were introduced.