A kind of anti-reflection coating liquid and preparation method thereof

Abstract

The invention relates to the technical field of glass coating, and concretely relates to an antireflection coating solution and a preparation method thereof. The antireflection coating solution is prepared from 5-20% of nano-silica, 5-20% of hollow silica, 5-15% of an organosilicone modifier, 0-5% of oxide, 10-40% of deionized water, 0.5-2% of a catalyst and 10-30% of a solvent. A film formed on the surface of a glass substrate by the coating solution has a large number of internal pores to facilitate the reduction of the refractive index of the film, so the visible light reflectivity of the glass surface is reduced, and the light transmittance of the glass is improved; and the film formed by the coating solution has very good adhesion with the glass substrate, has good uniformity, and canguarantee the mechanical properties of the film.

Description

technical field [0001] The invention relates to the technical field of glass coating, in particular to an anti-reflection coating solution and a preparation method thereof. Background technique [0002] Anti-reflection coatings are widely used in solar cells, photovoltaic glass, flat panel displays, optical devices and other fields. For the solar cell surface encapsulation glass protective layer, the refractive index of the glass is about 1.52, and the air refraction index is 1, which makes up to 8% of the sunlight irradiated on the glass surface reflected, while the encapsulation glass of the solar cell Anti-reflection coating can effectively reduce the loss of incident light. Moreover, impurities such as water vapor in the air and other suspended dust are easy to adhere to the glass surface, which will further reduce the penetration of sunlight. Therefore, this requires the anti-reflection film on the surface of the battery to have environmental resistance and self-cleani...

AI Technical Summary

Problems solved by technology

However, when spherical sol particles are used to form a film, if the bonding between the particles is weak, it is conducive to the formation of a porous structure, which can reduce the refractive index to 1.2, but the strength is poor and not wear-resistant; if the bonding between the particles is strong, Although the mechanical properties and wear resistance can be greatly improved, the porous structure is greatly sacrificed, the refractive index of the film layer is high, and the anti-reflection effect is not good.