Preparation and properties of a UV-curable coating containing rare earth CeO2

A UV-curable coating with UV and blue light protection was prepared by incorporating modified rare earth nano cerium dioxide (CeO2) treated with the silane coupling agent KH570. The structures of the modified CeO2 and the resulting UV-curable coating were characterized using Fourier Transform Infrared Spectroscopy, X-ray diffraction, scanning electron microscopy, and thermogravimetric analysis. UV spectral analysis was conducted to evaluate the UV shielding performance of the coating. The results demonstrated that the nano-CeO2 was uniformly distributed within the polymer matrix of the cured coating. The coating exhibited UV shielding capabilities ranging from 58% to 98% in the UVB region (280–315 nm), as well as effective protection against blue light (400–450 nm), and the visible light transmittance is maintained at about 90%. The UV-cured coating also displayed excellent mechanical properties, indicating its potential application in electronic products.