【目的】减少车身划痕，提升汽车外观。【方法】分析车身漆膜形成划痕的原因及场景，总结提升清漆的耐擦伤性的方法，研究一款市售耐擦伤清漆的耐擦伤性、外观、力学性能和施工性能并验证其与现有涂装线的匹配性。【结果】耐擦伤清漆在耐擦伤性、失光率、力学性能、施工性能方面，均比常规双组分清漆有所提升，失光率降低至 4%，而常规双组分清漆的失光率为 20. 1%。【结论】耐擦伤清漆具有饱满性高、通透性好、流平性优的外观表现，同时其耐擦伤性、施工性等性能表现也更优异，可用于现有涂装线，提升汽车外观。

［Objective］To reduce scratches on the car body and enhance vehicle appearance.［Methods］This study aimed to analyze the causes and scenarios of scratches on the automotive paint films，summarize the methods to improve the scratch resistance of the clearcoats，evaluate the scratch resistance，appearance，mechanical properties，and application performance of a commercially available scratch resistant clearcoat，and verify its compatibility with existing coating lines.［Results］ The scratch resistant clearcoat has improved its scratch resistance，long and short wave performance，loss of gloss，mechanical properties，and application performance，compared to 2K clearcoats，with a loss of gloss reduced to 4. 0% compared to 2K clearcoat（20. 1%）.［Conclusion］ The scratch-resistant clearcoat exhibits excellent appearance characteristics，including high fullness，good transparency，and excellent leveling performance. Furthermore，its scratch resistance，application performance，and other properties are also superior，making it suitable for use in existing coating lines to enhance the overall appearance of automobiles.