Abstract
Abstract In this study, graphene oxide nanoparticle was introduced as a versatile additive to enhance weathering and long-term corrosion performance of polyurethane (PU) coatings. For comparison purpose, the weathering performance of graphene oxide was compared with that of a typical organic UV absorber. The results demonstrated that graphene oxide could significantly improve the weathering and corrosion resistance of the coating. It was also revealed that while organic UV absorber could stabilize the coating for a limited time of weathering (temporary), graphene oxide stabilized the coating for a long time (permanent). The mechanisms of such permanent UV stabilization were also discussed.
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