Nanometer core-shell silicon dioxide microsphere as well as preparation and application of antireflection composite coating solution

Abstract

The invention relates to the field of anti-reflection technology for the surface of glass, and concretely relates to a nanometer core-shell silicon dioxide microsphere and a composite coating solution which is compounded by the nanometer core-shell silicon dioxide microspheres and aluminum silicon sol as well as preparation methods thereof. A cation type polystyrene emulsion is used as a hard template in order to prepare silicon dioxide dispersion liquid with a nanometer core-shell structure, the dispersion liquid and the aluminum silicon sol are compounded in order to prepare the coating solution for an antireflection film, toughening treatment is carried out for the coating solution in order to obtain the antireflection film. The raw materials are easy to obtain, and the antireflection film with a hollow structure is prepared by a simple process; pore spaces are arranged in particles and are not arranged in a silicon dioxide network, so that high light transmittance of the film is guaranteed, the light transmittance reaches 94.5% or above, and the porosity is high; the film has excellent smudginess resisting performance, the antireflection film and a glass substrate can be firmly combined, and the hardness of the film is high; because the surface of the film is compact, the film has good blocking effects for steam erosion, good weatherability, and industrialized application values.

Description

technical field [0001] The invention relates to the technical field of nano core-shell materials, in particular to a glass antireflection coating solution and its preparation and application. Background technique [0002] Solar cell encapsulation glass is used in solar photovoltaic power generation. In solar photovoltaic power generation, the better the light transmittance of solar cell encapsulation glass, the higher the energy conversion efficiency of solar photovoltaic power generation. In the prior art, in order to improve the light transmittance of the solar cell packaging glass, an anti-reflection film is coated on the surface of the solar cell packaging glass to reduce the reflection loss of the solar cell packaging glass surface to sunlight and improve the light utilization of the solar cell module. rate, thereby improving the energy conversion efficiency of solar photovoltaic power generation. [0003] nano-SiO 2 Sol-prepared SiO 2 Particle film is an early type...

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Problems solved by technology

[0005] However, the prior art uses a mixture of organic pore formers to make SO 2 The anti-reflection coating still has the problem of poor anti-fouling performance, because the SiO 2 The polymer and the organic pore-forming agent are uniformly mixed. After calcination, the surface of the film layer inevitably exists due to the pits left by the organic pore-forming agent after calcination, forming open pores that communicate with the atmosphere, and the introduction of the organic pore-forming agent The more, the higher the light transmittance, but the mechanical strength of the film layer decreases, and the more pits on the surface of the film layer become larger, which makes increasing the light transmittance and maintaining good dirt resistance and high mechanical strength a contradiction.

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