Preparation of Waterborne Polyurethane with High Solid Content and Its Application in Superfine Fiber Synthetic Leather
In this article,the polyester polyol,isophorone diisocyanate (IPDI) and dimethylolpropionic acid (DMPA) were used as raw materials to prepare prepolymers with different particle sizes via the mathematical model of packing density of spherical objects.Then the prepared prepolymers were mixed to prepare the waterborne polyurethane emulsion with high solid content (HSC-WPU) wherein the solid content was 51.43％ and the particle sizes showed multivariate distribution.The emulsions,films and coatings were characterized by infrared spectroscopy,tensile testing machine and wear tester respectively when the prepared emulsions were coated on the leather surface.The results revealed that the higher solid content was useful for enhancing the mechanical property,wear resistance and water resistance of the coating.
high solid contentwaterborne polyurethane coatingsuperfine fiber synthetic leatherwear resistance
NETL
NSTL
万方数据
维普
