【摘要】 本文通过查阅国内外有关文献资料，阐述了水性聚氨酯的制备方法、性能改进及应用，综述了水性聚氨酯目前的研究和发展状况，指出了其前沿研究领域，并对这一蓬勃发展的新型高分子材料作了展望。更多还原

【Abstract】 After consulting documents concerned home and abroad,I expatiate on the preparation, performance improvements,and applications of hydrophilic polyurethane. Its present state of study and development is summarized , and the forerunning field is indicated. Here I also make a prospect for this new booming macromolecule materials.更多还原