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Highly self-cleaning hydrophilic glass and preparation method

A glass and hydrophilic technology, applied in the field of glass products, can solve the problems of low hydrophilicity, structural stability and insufficient crystal particle size of photocatalyst sol, and achieve the effects of improving life and property safety, small particle size, and high environmental protection value

Inactive Publication Date: 2013-04-24
HEBEI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In addition, the inventor's previous patent "A Novel Indoor Air Purifier and Its Preparation Method" provides a photocatalyst sol that can be coated on the surface of glass, but the hydrophilicity of this photocatalyst sol is not high, and There are certain deficiencies in structural stability and crystal size

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A high self-cleaning hydrophilic glass, the structure includes an ordinary glass layer, and a high self-cleaning hydrophilic layer is attached on the ordinary glass layer, and the material of the high self-cleaning hydrophilic layer is titanium dioxide sol.

[0025] The preparation method of above-mentioned high self-cleaning hydrophilic glass, its step comprises:

[0026] A, preparation of titanium tetrachloride solution: at room temperature, slowly drop analytically pure titanium tetrachloride into distilled water to prepare a clear and transparent solution with a weight ratio of 20%;

[0027] B. Hydrolysis: Take the titanium tetrachloride solution obtained in the previous step, and then slowly drop into the solution an ammonia solution with a volume ratio of 1:1 to adjust the pH value to 7-8, so that the TiO 2+ Precipitation, then vacuum filtration to obtain a titanium dioxide filter cake;

[0028] C, complexation: add 30 times of weight of water to the filter cake ...

Embodiment 2

[0033] The difference between this embodiment and embodiment 1 is:

[0034] 1. In step C, the mol ratio of titanium dioxide and tartaric acid is 1:4;

[0035] ② In step D, heat to reflux for 40 minutes.

[0036] The glass prepared by the present invention was measured with CVST V2.17 3-1 contact angle measuring instrument, and the result showed that the average surface contact angle was 0.28°, indicating that it had a high degree of hydrophilicity.

Embodiment 3

[0038] The difference between this embodiment and embodiment 1 is:

[0039] ① In step C, malonic acid is added for complexation reaction, wherein the molar ratio of titanium dioxide to malonic acid is 1:2.

[0040] The glass prepared by the present invention is measured by CVST V2.17 3-1 contact angle measuring instrument, and the result shows that the average surface contact angle is 0.34°, indicating that it has a high degree of hydrophilicity.

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PUM

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Abstract

The invention discloses highly self-cleaning hydrophilic glass. The structure of the glass comprises a common glass layer, wherein a highly self-cleaning hydrophilic layer is pasted on the common glass layer. A preparation method of the highly self-cleaning hydrophilic glass comprises the following steps of: A, preparation of titanium tetrachloride solution; B, hydrolysis: dropping the titanium tetrachloride solution obtained in the step A into ammonia solution to obtain a titanium dioxide deposit; C, complexation: pulping the filter cake obtained in the step B, and adding tartaric acid or propane diacid into the pulp to obtain colorless transparent solution; D, heating, refluxing and hydrolysis: heating, refluxing and hydrolyzing the colorless transparent solution to obtain a nano titanium dioxide colorless transparent hydrosol; and E, preparation of the highly self-cleaning hydrophilic layer: uniformly spraying the colorless transparent hydrosol obtained in the step D to the surfaceof the common glass, and naturally drying the glass at room temperature. The highly self-cleaning hydrophilic glass can ensure that organic wastes on the surface of the glass are automatically decomposed into harmless gases under an illumination condition to achieve highly self-cleaning of a glass surface layer; and simultaneously, the highly self-cleaning hydrophilic glass has high hydrophilicity and stability.

Description

technical field [0001] The invention relates to a glass product, especially a glass with high self-cleaning function and high hydrophilicity; the invention also relates to a preparation method of the glass. Background technique [0002] At present, ordinary SiO is used in daily life and construction industry 2 Glass is the most common, there are also modified SiO 2 Glass, that is, the traditional glass has been modified in terms of hardness and light transmission, making traditional glass appear in people's lives as windshields for locomotives and decorative glass for high-rise buildings. But problems also follow. For example, in windy and rainy days, the hydrophobicity of motorcycle glass makes rainwater form water droplets and adhere to the surface of the glass. Although there are wipers, the impact of water droplets on the driver's vision cannot be eliminated; in addition, the same Due to the hydrophobicity of motorcycle glass, in winter the outside is relatively cold a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/23
Inventor 丁士文景航坤李会静苏春阳
Owner HEBEI UNIVERSITY