Preparation method of porous nano silicon dioxide anti-reflection film

Abstract

The invention discloses a preparation method of a porous nano silicon dioxide anti-reflection film. The preparation method comprises polishing, cracking and pore forming. The method comprises the following steps of: selectively etching a glass surface by using silicon dioxide saturated solution of fluosilicic acid; selectively etching calcium oxide, sodium oxide and metal oxide with high reflectivity on the glass surface; and forming a porous nano silicon dioxide anti-reflection film on the glass surface, thereby fulfilling the aims of reducing the reflectivity of the glass and improving the transmittance of the glass. The transmittance of the glass produced by the process can be increased by 2-5 percent; the preparation method has an obvious anti-reflection effect; and in addition, the glass produced by the process has an obvious anti-dazzle effect and an excellent protection effect on human eyes.

Description

technical field [0001] The invention relates to the field of glass processing, in particular to a method for preparing a porous nano-silica anti-reflection film. Background technique [0002] In the prior art, although the utilization efficiency of solar energy such as solar collectors, solar cells, and solar houses has been significantly improved, the reflectivity of the cover glass on the surface of these solar energy utilization devices has not been effectively reduced, and has been maintained at 8% or so. Reducing the reflectivity of cover glass can significantly improve the efficiency of solar energy utilization devices such as solar collectors, photovoltaic modules, and solar houses. At present, the main research direction of anti-reflection glass at home and abroad is to use the method of coating on the cover glass to reduce the reflection of the glass surface. The most commonly used coating anti-reflection glass process is the pulling method. The problems of the pu...

AI Technical Summary

Problems solved by technology

The problems of the pulling method are: 1. The glass is required to be completely vertical in the production process, and then pulled slowly, and the film forming speed is slow; 2. The preparation process and process conditions are relatively complicated, the required equipment is expensive, the cost is high, and the film There are also certain restrictions on the material and the parts to be plated; 3. The quality of the film layer is unstable, and it is greatly affected by the environment, and it is prone to problems such as uneven film layer and peeling off.

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