Functional triazine ultraviolet absorbers for sunlight protection of polymer materials surface

Most of the polymer coatings are directly exposed to sunlight, leading to serious degradation on their surfaces. Functional triazine ultraviolet absorber (FT-UVA) with surface enrichment property was synthesized. The surface enrichment property of FT-UVA in coating surfaces was investigated using X-ray photoelectron spectroscopy (XPS) and attenuated total reflection Fourier-transform infrared spectrometry (ATR-IR). Contact angle measurements suggest that the enrichment of FT-UVAs on coating surface yielded a hydrophobic film. The effective protection of FT-UVA for PVC coating was investigated by artificial accelerated aging test. The calculation of dynamic process was conducted to gain insights into the surface enrichment mechanism of FT-UVA in coating.