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Preparation method of glass with wide band-gap refractive-index-adjustable isolation layer

A technology of isolation layer and refractive index, applied in the field of functional coated glass manufacturing, can solve the problems of small band gap, mismatched refractive index, inability to meet coated glass, etc., and achieve the effects of low equipment cost, firm bonding and good durability

Active Publication Date: 2012-07-18
JIANGSU XIUQIANG GLASSWORK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These coatings, as isolation layers, have a mismatch between the refractive index and the functional coating, or have a small band gap to cut off ultraviolet light and some visible light, which cannot meet the requirements of the coated glass to fully transmit the solar spectrum as much as possible.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0020] Plating the isolation layer by spraying method or vapor deposition method includes the following steps:

[0021] 1) Prepare coating solution. The weight ratio of the coating solution is as follows: ethyl orthosilicate: monobutyl tin trichloride or tin chloride: ethanol: water = 0.02:99.98:30:10, acetic acid as a catalyst, adjust the pH value between 5.5 and 6.5 .

[0022] 2) Coating the isolation layer: prepare the isolation layer on a clean glass sheet at a temperature of 450° C. by vapor phase deposition or single-side spraying under normal pressure, and heat-treat at 450° C. for 2.5 minutes.

[0023] 3) The properties of the obtained coated glass are as follows: the refractive index is 2.10, the band gap is 3.4eV, and the physical and chemical properties of the coated glass meet the national standards stipulated in the "Testing Standards for Physical and Chemical Properties of Coated Glass".

example 2

[0025] Isolate the layer by spraying or vapor deposition, including the following steps:

[0026] 1) Prepare coating solution. The weight ratio of the coating solution is as follows: ethyl orthosilicate: monobutyl tin trichloride or tin chloride: ethanol: water = 10.0:90:40:10, acetic acid as catalyst, adjust the pH value between 5.5 and 6.5 .

[0027] 2) Plating isolation layer: Prepare the isolation layer on a clean glass sheet at a temperature of 600° C. by vapor phase deposition or single-side spraying under normal pressure, and heat-treat at 600° C. for 2.5 minutes.

[0028] 3) The properties of the obtained coated glass are as follows: the refractive index is 1.98, the band gap is 3.45eV, and the physical and chemical properties of the coated glass meet the national standards stipulated in the "Testing Standards for Physical and Chemical Properties of Coated Glass".

example 3

[0030] Isolate the layer by spraying or vapor deposition, including the following steps:

[0031] 1) Prepare coating solution. The weight ratio of the coating solution is as follows: ethyl orthosilicate: monobutyl tin trichloride or tin chloride: ethanol: water = 30:70:40:10.

[0032] 2) Plating isolation layer: Prepare the isolation layer on a clean glass sheet at a temperature of 700° C. by vapor phase deposition or single-side spraying under normal pressure, and heat-treat at 700° C. for 3.0 minutes.

[0033] 3) The properties of the obtained coated glass are as follows: the refractive index is 1.90, the band gap is 3.50eV, and the physical and chemical properties of the coated glass meet the national standards stipulated in the "Testing Standards for Physical and Chemical Properties of Coated Glass".

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Abstract

The invention relates to a preparation method of glass with a wide band-gap refractive-index-adjustable isolation layer. The glass comprises a film layer structure with float glass plus the isolation layer plus a functional film. The band gap of the isolation layer is between 3.4 and 3.6eV, the reflective index of the isolation layer can be adjusted between 1.6 and 2.1, and the spectral transmittance of the glass cannot be influenced by the isolation layer. The isolation layer is prepared on the glass at a temperature of 450 to 750 DEG C by adopting a vapor deposition method or a single-side spray method and thermally preserved for 2.5 to 3.0 minutes at the temperature of 450 to 750 DEG C; or the isolation layer is coated at the temperature of 450 to 750 DEG C, then the functional film layer is coated on the isolation layer and finally, the isolation layer and the functional film layer are thermally preserved for 2.5 to 3.0 minutes at the temperature of 450 to 750 DEG C at the same time; and the durability of the film layer structure is good. The preparation method is widely applied to the industrial aspects of semiconductor functional coated glass, heat insulation glass, solar electrode glass and building energy-saving glass, and has a wide prospect.

Description

technical field [0001] The invention specifically relates to a preparation method for coating a wide-bandgap refractive index-adjustable isolation layer on a glass substrate, and belongs to the technical field of functional coated glass manufacturing. Background technique [0002] To coat a functional thin film on glass, in order to prevent the sodium ions in the glass from diffusing to the functional film and reduce the performance of the functional film, it is often necessary to first coat the glass with an isolation layer. The structure of coated glass is: glass / isolation layer / functional film. Silicon oxide film is commonly used as the isolation layer at present. However, since the refractive index of the silicon oxide film is between 1.46-1.52, it cannot be well matched with the refractive index of the functional film, which will cause chromatic aberration in the coated glass and affect the appearance of the coated glass. For example: transparent conductive film, comm...

Claims

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Application Information

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IPC IPC(8): C03C17/245
Inventor 赵青南董玉红赵杰卢秀强
Owner JIANGSU XIUQIANG GLASSWORK CO LTD