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Photochromic glass

A photochromic glass and photochromic technology are applied in the field of glass to achieve the effects of simple preparation process, low cost and good effect

Active Publication Date: 2015-01-28
XINYI ENVIRONMENTAL PROTECTION SPECIAL GLASS JIANGMEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, there are also some patents on photochromic glass abroad, but most of them are improved technologies for silver halide and photosensitizer systems, and the color-changing substances are all in the glass body. So far, there have been no patent documents for photochromic glass of the coating type.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0040] Example 1 Sol-gel method

[0041] Weigh commercial tungsten oxide, titanium dioxide, zinc oxide particles and oxalic acid crystals, and the weight and number ratio is WO 3 :H 2 C 2 o 4 :TiO 2 :ZnO=80:20:10:5, dispersed in deionized water to form a coating solution, and the coating solution is evenly deposited on a clean glass substrate (substrate) with a spraying equipment, and dried at 60°C to form WO 3 -H 2 C 2 o 4 -TiO 2 - ZnO color-changing film with a thickness of 100 nm.

[0042] detect WO 3 -H 2 C 2 o 4 -TiO 2-The discoloration and energy-saving effects of ZnO samples: put the samples directly in the outdoor sunlight, take them back after 3 minutes and use the translucency meter for detection. The results show that the color of the glass changes from light to dark blue after 3 minutes of sunlight exposure, and then fades to light after 60 minutes without light. This discoloration-fading cycle can be repeated.

[0043] Specific as figure 2 As show...

example 2

[0044] Example 2 Magnetron sputtering method

[0045] The mixed powder of titanium dioxide, zinc oxide and tungsten oxide is customized into a ceramic target, and the weight ratio is WO 3 :TiO 2 :ZnO= 80:20:5. The preparation of this ceramic target is done by the target manufacturer. In a mixed atmosphere of argon and oxygen, deposit a layer of WO 3 -TiO 2 -ZnO color-changing thin film on glass substrate (substrate) with a thickness of 200 nanometers.

[0046] detect WO 3 -TiO 2 -The discoloration and energy-saving effect of ZnO samples: put the samples directly in the outdoor sunlight, and retrieve the samples after 20 minutes for testing with a translucent instrument. As a result, the color of the glass changes from light to dark blue, the transmittance of sunlight decreases by 11%, and the shading coefficient decreases by about 0.10; 40% of the color can be faded after 60 minutes without light, and it can be completely faded after a few hours. This discoloration-fadi...

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Abstract

The invention relates to photochromic glass, which comprises a glass base. A photochromic film is arranged on the surface of the glass base, and comprises components including, by weight, from 70 to 100 parts of tungsten oxide, from 5 to 30 parts of titanium dioxide and from 3 to 10 parts of zinc oxide. The photochromic is provided with the photochromic film, the components of the film include the tungsten oxide (WO3), the titanium dioxide (TiO2), the zinc oxide (ZnO) and the like, the photochromic glass has functions of automatically changing transmittance and shading coefficient, is simple in preparation process, low in cost and fine in photochromic effect, and is nontoxic and pollution-free, toxic and flammable organic films made of helical pyran compound, azo compound, condensed-ring aromatic compound and the like are omitted, and the oxide such as the WO3 and the like is uninflammable and is high in safety performance.

Description

technical field [0001] The invention relates to the technical field of glass, in particular to a photochromic glass. Background technique [0002] Photochromic glass is a new type of energy-saving glass. When the light is enhanced, the glass gradually becomes darker, which reduces the transmittance of light and heat; when the light is weakened, the glass becomes bright again, which improves the transmittance of light and heat. Rate. This kind of smart glass, which can automatically change the light transmittance and shading coefficient according to the environmental changes in the morning and evening and the four seasons, has the advantages that star energy-saving glasses such as low-emissivity Low-E do not have, and has attracted special attention. [0003] In 1964, Corning Corporation of the United States invented photochromic glass, which was mixed with silver halide and photosensitizer in the glass body. The disadvantages are high cost and single function. Currently, it...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/23
Inventor 董清世张麒李文情周禾叶茵
Owner XINYI ENVIRONMENTAL PROTECTION SPECIAL GLASS JIANGMEN