Effect of polymer particles on the light scattering properties of UV cured antiglare hard coating

摘要

The optical hard coating was treated with antiglare performance based on the preparation of UV curable coating liquids and hard coat film. Organic PMMA particles were selected as the antiglare particles. The parameter of the antiglare particle concentration, particle size, particle size distribution, refractive index difference with resin, coating thickness, and so on, which effect on the light scattering properties of UV cured antiglare hard coating were studied, respectively. The optical properties and surface morphology of the preparing antiglare hard coating were characterized by using transmittance Haze meter, gloss meter, and optical microscope, respectively. The results showed that, for adding the narrow distribution particles, Haze of antiglare hard coating would gradually increase and the gloss decrease as the particle size or particle content increased, while total transmission (TT) changed not obviously. Haze of the antiglare hard coating was lower when the refractive index of the liquid resin is similar to that of antiglare particles, and the gloss was higher. While the refractive index difference between the antiglare particles and resins is larger, Haze of the antiglare hard coating was higher, and the gloss was lower. Haze of antiglare hard coating is higher, and the gloss is lower when the coating thickness is relatively thin. TT of antiglare hard coating decreased, Haze first decreased and then increased, and the gloss was rising with the increase of the thickness of the coating. As for adding the wide distribution particles, the total transmission value of antiglare hard coating is lower, Haze is higher, and the gloss is lower.