Novel Lignin‐Functionalized Waterborne Epoxy Composite Coatings with Excellent Anti‐Aging, UV Resistance, and Interfacial Anti‐Corrosion Performance

after seven days of UV aging while still maintaining a similar magnitude as before aging. The green lignin/WEP functional coatings effectively withstand the challenging outdoor environment characterized by high salt concentration and intense UV radiation, thereby demonstrating promising prospects for application in metal protection.