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Anti-reflecting glass and method for preparing same through secondary acid corrosion

An anti-reflection glass, acid corrosion technology, applied in the field of glass surface treatment, to achieve the effect of low cost

Active Publication Date: 2012-11-28
刘立强
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention is an anti-reflection glass with good anti-reflection effect and low cost and its preparation method, which is invented to meet the needs of reducing reflectivity, increasing transmittance and eliminating light pollution for current photovoltaic, photothermal, building and other glasses.

Method used

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  • Anti-reflecting glass and method for preparing same through secondary acid corrosion
  • Anti-reflecting glass and method for preparing same through secondary acid corrosion
  • Anti-reflecting glass and method for preparing same through secondary acid corrosion

Examples

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Effect test

Embodiment 1

[0019] Such as figure 2 Shown is an anti-reflection glass, which includes a glass substrate and an anti-reflection film on its surface, and the anti-reflection film is an anti-reflection film layer with a continuous gradient refractive index distribution. The thickness of the anti-reflection coating is 80-500 nanometers. The glass substrate is Na 2 O-CaO-SiO 2 System glass. figure 1 Shown is the SEM image of the cross-section of the glass substrate without anti-reflection treatment.

[0020] The measured transmittance and reflectance of anti-reflection glass, see image 3 . 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%. The transmittance of visible light through the glass after treatment by the anti-reflection method can reach more than 99%, and the reflectivity is lower than 0.5%.

Embodiment 2

[0022] The photovoltaic, photothermal or building 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 the first containing concentration of 5%H 2 SO 4 The solution corroded the tank, and placed in the tank for 6 hours, and rinsed with deionized water after taking it out. Put the cleaned glass substrate into the second one containing 0.003% HF and 0.0006% Na 2 SiO 3 Place it in the corrosion tank for 15 hours, then take it out and clean it with deionized water. Put the cleaned glass substrate into a drying oven at 200°C, dry it for 90 minutes, turn off the heating switch of the oven, take it out of the oven when the temperature drops to 50°C, and obtain anti-reflection glass.

Embodiment 3

[0024] The photovoltaic, photothermal or building 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 the first corrosion tank containing 0.001% HF solution and 1% HCl solution, and place it in the tank for 3 hours, take it out and rinse it with deionized water. Put the cleaned glass substrate into the second one containing 0.001% HF and 0.0001% Na 2 SiO 3 Place it in the corrosion tank for 20 hours, then take it out and clean it with deionized water. Put the cleaned glass substrate into a drying oven at 300°C, dry it for 60 minutes, turn off the heating switch of the oven, take it out of the oven when the temperature drops to 50°C, and obtain anti-reflection glass.

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Abstract

The invention relates to anti-reflecting glass and a method for preparing the anti-reflecting glass through secondary acid corrosion. The method aims to obtain zero-reflecting Na2O-CaO-SiO2 system glass and greatly improve the optical transmissivity of the glass. The method is realized through the following technical scheme: a glass matrix is put in two acidic solution corrosion tanks to be corroded orderly; and after being taken out and cleaned, the glass matrix is put in a drying oven to be dried, therefore, the anti-reflecting glass is obtained. The method has the advantages that the cost is low, and the glass is optimal in anti-reflection performance and anti-reflection bandwidth; and the visible-light double-face reflectivity of the glass is lower than 0.5%. The visible light transmissivity of ultra-white sheet glass treated by the method exceeds 99%, while the anti-reflection bandwidth having the transmissivity greater than 96% reaches up to 1200 nm; and the anti-reflection performance of the ultra-white sheet glass reaches international advanced level.

Description

technical field [0001] The invention relates to a glass surface treatment method, in particular to a secondary acid corrosion anti-reflection glass and a preparation method thereof. The anti-reflection glass prepared by the secondary acid etching method is suitable for solar thermal and photoelectric materials, glass for construction, glass walls for greenhouses and glass for decoration. Background technique [0002] At present, in the research of anti-reflection glass conducted by researchers, the visible light transmittance of glass is mostly about 96%, and the process is complicated and costly, which is not suitable for large-scale production. After several years of painstaking research, the inventor invented the secondary corrosion anti-reflection technology. This original anti-reflection technology has good anti-reflection effect and low cost. The visible light transmittance of photovoltaic glass treated by this method reaches 99%. Above, and the bandwidth with a transm...

Claims

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Application Information

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IPC IPC(8): C03C15/00
Inventor 刘立强
Owner 刘立强
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