Method for preparing high-activity titanium dioxide film self-cleaning glass material

A technology of titanium dioxide and glass materials, which is applied in the field of self-cleaning glass materials for the preparation of high-activity titanium dioxide films, which can solve the problems of difficult control of coating quality, low photocatalytic activity, and no self-cleaning, and achieve the effect of easy and effective control of product quality

Inactive Publication Date: 2003-03-05
WUHAN UNIV OF TECH +1
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Problems solved by technology

However, this method cannot completely prevent sodium ions from diffusing into the titanium dioxide film, and the prepared titanium dioxide coated self-cleaning glass has low photocatalytic activity and no self-cleaning function.
[0003] GB patent specification 2026454B describes a method in which the coating chamber is placed above the hot float glass ribbon as it advances from the float tank, this method is difficult to control the coating quality, complex operation
[0004] Chinese Invention Patent Bulletin on April 24, 1996 disclosed a heat-treatable double-sided coated glass manufacturing method and its products, the announcement number is CN1121054, and its coating steps include glass substrate-cleaning-drying-and sol-gel method coating, its photocatalytic activity is not high

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  • Method for preparing high-activity titanium dioxide film self-cleaning glass material

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Embodiment Construction

[0033] T, D, H, E and P represent butyl titanate, diethanolamine, water, absolute ethanol and polyethylene glycol (PEG), respectively.

[0034] The method suitable for industrial production is as follows:

[0035] 1. Original glass sheet: Select high-quality original float glass sheet and mount it on a rack for use. The glass is required to be fresh and free of appearance defects such as scratches.

[0036] 2. Slicing: Cut the glass according to the requirements of the production process and the needs of the user. Size error ≯±1.5mm.

[0037] 3. Edge grinding: Use an abrasive belt edger to grind the glass cutting edge. It is required that there are no burrs around the glass.

[0038] 4. Detergent cleaning: Clean the glass surface with detergent on the washing machine to remove organic matter such as oil and hand grease on the glass surface.

[0039] 5. Acid cleaning: Clean the glass surface with a dilute acid solution on the cleaning machine to remove inorganic substances...

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Abstract

The method for preparing high-activity titanium dioxide film self-cleaning glass material, applicable to the fields of building glass, car glass and optical glass, uses general glass as base body forcoating film and includes the following steps: cleaning glass surface, drying, sweeping with nitrogen gas, sol preparation, impregnating and coating, drying, crystallization heat treatment, pickling and surface after-treatment. The sodium ion content of titanium dioxide film can be controlled in 0.3%, carbon content of film surface is reduced, surface hydroxy content is increased and the optical catalytic activity of glass can be greatly raised. Said invention adopts line production process, and can effectively control product quality.

Description

technical field [0001] The present invention relates to a glass obtained by depositing titanium dioxide on a flat glass substrate. More specifically, the present invention relates to a method for preparing a glass material coated with a titanium dioxide film by a sol-gel method and suitable for industrial production. Background technique [0002] People often use various cleaning agents to clean window glass, curtain wall glass or automobile glass. The reason is that it is difficult to use pure water to clean the organic pollutants on the glass surface due to the adhesion of organic pollutants in the air to the glass surface. The surface is clean and clean. If a layer of highly active transparent titanium dioxide film is coated on the surface of ordinary soda-lime glass, it is quite useful for self-cleaning of the glass surface and indoor and outdoor air purification. There are many methods for preparing transparent titanium dioxide thin fil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/23C03C17/25
Inventor 赵修建余家国吕在国袁启华徐麟
Owner WUHAN UNIV OF TECH
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