▎ 摘　　要

NOVELTY - Preparing aqueous polyurethane coating having weathered and sand abrasion resistance, comprises preparing aqueous polyurethane coating emulsion, adding 1-40 pts. wt. polyphenol-modified two-dimensional nanosheets to 100 pts. wt. aqueous polyurethane coating emulsion, and stirring until completely dispersed to obtain final product in which polyphenol-modified two-dimensional nanosheet is two-dimensional nanosheet material whose surface is modified with many phenolic hydroxy groups, and the phenolic hydroxy group is connected to the two-dimensional nanosheet by reversible non-covalent π-π conjugated bond. USE - The aqueous polyurethane coating is useful for wind turbine blades (claimed). ADVANTAGE - The aqueous polyurethane coating has low production costs, mild preparation conditions, simple processing steps, and excellent wear resistance.