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Method for preparing antireflection glass with alkaline corrosion method

An anti-reflection glass and alkali corrosion technology, applied in the field of glass surface treatment, to achieve the effect of increasing visual clarity, increasing utilization of sunlight, and reducing light pollution

Active Publication Date: 2012-11-21
SHANDONG JIANZHU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention is a glass surface anti-reflection method with good anti-reflection effect and low cost, which is invented to meet the needs of reducing reflectivity, increasing transmittance and eliminating light pollution for current photovoltaic, photothermal, building, greenhouse and decoration glasses.

Method used

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  • Method for preparing antireflection glass with alkaline corrosion method

Examples

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Effect test

Embodiment 1

[0013] Na 2 O-CaO-SiO 2 System glass (soda-lime-silica system glass) substrate surface is cleaned with cleaning agent, and then rinsed with deionized water. Put the glass substrate into the corrosion tank containing NaOH solution with a concentration of 5%, and place it in the tank for 40h, and rinse it with deionized water after taking it out. Put the cleaned glass substrate into a drying oven at 200°C, dry it for 50 minutes, turn off the oven heating switch, and take it out of the oven when the temperature is naturally lowered to 50°C to obtain anti-reflection glass.

[0014] The measured transmittance and reflectance of anti-reflection glass, see figure 1 . The "original glass" in the picture refers to the Na 2 O-CaO-SiO 2 System glass (soda-lime-silicon system glass) substrate, its transmittance before anti-reflection treatment is about 91%, and its reflectance is about 8%. After the anti-reflection treatment, the visible light transmittance of the glass reaches 97%,...

Embodiment 2

[0016] Na 2 O-CaO-SiO 2 The surface of the glass substrate of the system is cleaned with a cleaning agent, and then rinsed with deionized water. Put the glass substrate into an etching tank containing 1.5% KOH and 0.007% NaOH solution, and place it in the tank for 20 hours, take it out and rinse it with deionized water. Put the cleaned glass substrate into a drying oven at 300°C, dry it for 30 minutes, turn off the heating switch of the oven, and take it out of the oven when the temperature is naturally lowered to 50°C to obtain anti-reflection glass.

Embodiment 3

[0018] Clean the surface of the Na2O-CaO-SiO2 system glass substrate for photovoltaic, photothermal, building, greenhouse and decoration that needs to be anti-reflection treated by calendering or float method with cleaning agent, and then rinse it with deionized water. Put the glass substrate into a solution containing 3% LiOH, 0.001% NaOH, 0.001% KOH and 0.08% Ca(OH) 2 The corrosion tank of the solution, and placed in the tank for 0.5h, after taking it out, rinse it with deionized water. Put the cleaned glass substrate into a drying oven at 500°C, dry it for 10 minutes, turn off the heating switch of the oven, and take it out of the oven when the temperature is naturally lowered to 50°C to obtain anti-reflection glass.

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Abstract

The invention relates to a method for preparing an antireflection glass with an alkaline corrosion method through a Na2O-CaO-SiO2 system glass base, and aims to reduce reflectivity of a photovoltaic glass surface, a photo-thermal glass surface, a building glass surface, a room temperature glass surface and a decorative glass surface, and increase the transmittance, so as to increase a sunlight utilization rate, improve photoelectric or photo-thermal conversion efficiency, improve visual definition, and reduce light pollution. The purpose of the invention is achieved by the technical scheme that: placing a glass base body into an alkaline solution corrosion tank to be corroded; taking out, and cleaning, and then placing into an oven to be parched to obtain an antireflection glass. The method has the beneficial effects of low cost, good antireflection performance of the glass, high transmittance, and has a visible light transmittance of over 97%.

Description

technical field [0001] The invention relates to a glass surface treatment method, in particular to a method for preparing anti-reflection glass by alkali corrosion. The anti-reflection glass prepared by the alkali corrosion method is suitable for solar thermal and photoelectric materials, architectural glass, glass walls of greenhouses and decorative glass. Background technique [0002] In recent years, the world's demand for new energy has greatly promoted the development of solar energy utilization technology. China has become the largest producer of photovoltaic and photothermal products, but most of the photovoltaic and photothermal devices use glass with good light transmission As a protective or insulating material, if the reflection of the glass surface can be eliminated, the transmittance of sunlight can be increased, thereby further improving the efficiency of photoelectric or light-to-heat conversion, which has good economic benefits; at present, the glass curtain ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C15/00
Inventor 刘立强张淑国杨丰豪
Owner SHANDONG JIANZHU UNIV
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