| abstract |
The invention discloses a high light transmittance barrier film and its application. Its structure sequentially includes a base material, a high refractive index layer, and a low refractive index layer; the high refractive index layer is composed of high refractive index particles, nano oxides, Composed of phosphorus-containing compounds and acid catalysts, the low refractive index layer is composed of carboxyl-containing polymers, hydroxyl-containing water-soluble polymers, coupling agents with carboxyl-reactive groups, and hydrolytic condensation products of silicon alkoxides , Resin crosslinking agent composition. The synergistic effect of the high-refractive-index layer and the low-refractive-index layer prepared by the invention not only increases the light transmission performance of the substrate in the visible light band by 2% to 5%, but also improves the water blocking performance of the substrate by 10 to 1000 times. The barrier film prepared by the invention can be applied to the fields of food packaging, pharmaceutical packaging, flexible packaging of photoelectric devices, and the like. |