The scratch resistance of plastic coatings is one of the important indicators for evaluating their quality and service life. In practical applications, plastic coatings are often subjected to various external forces of scratching and wear, so having excellent scratch resistance is crucial. To improve the scratch resistance of plastic coatings, multiple approaches can be taken. Firstly, selecting the appropriate matrix resin is crucial. Plastic matrix resins with good wear resistance, such as ultra-high molecular weight polyethylene (UHWMPE), can effectively improve the wear resistance and scratch resistance of coatings. In addition, plastics with high crystallinity, high regularity, and high hardness usually have good scratch resistance.