Application of Ce‐Based Nanomaterial in Polyurethane for Weather Resistance: A Review

ABSTRACT Nanomaterials have demonstrated significant potential in the coating industry, particularly for enhancing polyurethane (PU) coatings used in the automotive, aerospace, marine, and construction sectors. Despite their versatility, PU coatings frequently struggle to maintain corrosion and UV radiation resistance, leading to premature deterioration and reduced longevity. The integration of nanoparticles into the PU matrix can enhance performance, improving corrosion resistance, UV absorption, and overall durability. Nanoparticles such as ZnO, TiO 2 , SiO 2 , carbon nanotubes, and nanoclay form compact networks that effectively withstand corrosive substances and UV radiation. Furthermore, these additives improve mechanical properties, such as hardness and adhesion, and can be tailored to specific applications. This review focuses on the application of cerium‐based nanomaterials, highlighting their superior UV‐blocking capabilities and active stabilization mechanisms compared to traditional metal oxides. Utilizing these nanomaterials offers the dual advantage of minimizing maintenance requirements and decreasing waste production, thereby benefiting the environment.