本文用红外光谱法较系统地研究了聚醚型聚脲氨酯内的氢键及其性质,表明材料内的NH基团是几乎完全氢键化的。在这些氢键中,NH作为质子的给予体;质子的接受体包括醚氧原子、氨基甲酸酯羰基和脲羰基。氢键对温度十分敏感,随温度上升而逐渐解离,且此解离存在着平衡。从平衡解离温度可知不同类型的氢键的相对稳定性不同。 In this paper, the hydrogen bonding and its properties in polyether urea polyurethanes were systematically studied by infrared spectroscopy, which showed that the NH groups in the materials were almost completely hydrogenated. Of these hydrogen bonds, NH acts as a proton donor; proton acceptors include ether oxygen atoms, carbamate carbonyls, and urea carbonyls. Hydrogen bonding is very sensitive to temperature and gradually dissociates as the temperature rises, and there is a balance between this dissociation. From the equilibrium dissociation temperature we can see that the relative stability of different types of hydrogen bonds are different.