合成革用水性聚氨酯树脂的改性研究进展

该文介绍了水性聚氨酯的性能特点以及改性新技术的研究进展。论述了合成革用水性聚氨酯树脂在生产和应用中存在的主要问题,由于分子中引入了亲水基团,水性聚氨酯树脂在耐水性、耐溶剂性、透气透湿性、配伍性和干燥速度等方面表现较差,需要对其进行改性研究,如采用丙烯酸酯改性、有机硅改性、有机氟改性、植物油改性、环氧树脂改性、纳米材料改性和超支化聚合物改性等,并讨论了辐射聚合、交联及固化等辐射技术在共聚物乳液制备上的研究及应用。最后对合成革用水性聚氨酯树脂改性设计的发展前景作了展望。

New Research Progress in the Modification Technology of Waterborne Polyurethane Resin Used for the Manufacture of Synthetic Leather

In this paper,the characteristics of waterborne polyurethane(WPU) and its research progress of new technologies on modifying WPU resin were introduced.The main problems in the production and application of WPU resin used for the manufacture of synthetic leather were discussed.However,since the hydrophilic group is introduced into the molecules,WPU is weak in water resistance,solvent resistance,water vapor permeability,compatibility and rate of drying,hence the necessity of modifying WPU,such as the acrylate modification,organic silicon modification,organic fluorine modification,vegetable oil modification,epoxy resin modification,nanometer materials modification,and hyperbranched polymer modification,etc.The use of radiation technology,including radiation polymerization,crosslinking and curing,in copolymer latex is reviewed in the paper.The likely future trends of the modification design of WPU resin used for the manufacture of synthetic leather were described.