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Self-cleaning glass and preparation method thereof

A glass, self-cleaning technology, applied in chemical instruments and methods, glass/slag layered products, layered products, etc., can solve the problems of low photocatalytic efficiency of glass, low bonding force between layers and glass, etc. Efficiency, good bonding force, and the effect of improving utilization

Inactive Publication Date: 2011-03-16
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention is in order to solve the low photocatalytic efficiency of glass existing in the prior art, TiO 2 In order to solve the problem of low bonding force between layer and glass, a self-cleaning glass is proposed

Method used

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  • Self-cleaning glass and preparation method thereof

Examples

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preparation example Construction

[0021] The present invention also provides a method for preparing self-cleaning glass, comprising the following steps:

[0022] 1) Clean and dry the glass surface;

[0023] 2) forming the nano-silver layer by magnetron sputtering on the glass surface through step 1);

[0024] 3) Prepare urea-containing titanium dioxide sol by sol-gel method, pull and coat the glass in step 2) in the urea-containing titanium dioxide sol, and then form a titanium dioxide layer containing nitrogen-doped titanium dioxide on the glass surface through heat treatment;

[0025] Through the above steps, the self-cleaning glass provided by the present invention is obtained.

[0026] According to the preparation method provided by the present invention, the glass surface needs to be cleaned and dried first. The cleaning and drying methods are various methods commonly used by those skilled in the art, and are not particularly limited in the present invention. For example, it can be: first clean the gla...

Embodiment 1

[0039] This example is used to illustrate the self-cleaning glass of the present invention and its preparation method.

[0040] (1) Glass surface cleaning: Clean the surface stains on the glass (2cm×5cm) with deionized water, then ultrasonically soak and clean in absolute ethanol for 5 minutes, repeat ultrasonic cleaning with deionized water for 3 times, and then dry in an oven at 110°C.

[0041] (2) Magnetron sputtering nano-Ag layer: use magnetron sputtering to sputter a nano-metal Ag film on the glass surface, control the thickness of the sputtered film to be 0.2nm, and obtain a glass slide with a nano-silver layer on the surface. The magnetron sputtering machine is a radio frequency reaction magnetron sputtering machine (produced by Beiyi Innovation Vacuum Technology Co., Ltd., model JP-900A), the sputtering target material is pure Ag palladium, and the sputtering atmosphere is pure argon. During the sputtering reaction, the power supply was 2000W, the vacuum degree was 0....

Embodiment 2

[0047] This example is used to illustrate the self-cleaning glass of the present invention and its preparation method.

[0048] The self-cleaning glass of this embodiment is prepared by the same method as in Example 1, the difference is that in step (2), the thickness of the sputtered film is controlled to be 2nm; the sputtering conditions include: the power supply is 2000W, and the vacuum degree is 0.5 Pa, the sputtering time is 20s, the bias voltage is 150V, and the duty cycle is 80%.

[0049] Through the above method, the self-cleaning glass of this embodiment was obtained, denoted as A2.

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Abstract

The invention provides a self-cleaning glass. The self-cleaning glass comprises a glass base, a nano sliver layer and a titanium dioxide layer in turn, wherein the nano sliver layer is distributed between the glass base and the titanium dioxide layer; and the titanium dioxide layer is a photo-catalyst layer. The invention also provides a preparation method for the self-cleaning glass. Because the nano sliver layer is distributed on the glass and the titanium dioxide layer is distributed on the nano sliver layer, the self-cleaning glass can effectively improve the utilization rate of sunlight and improve the photo-catalysis efficiency of a TiO2 film so that the photo-catalysis efficiency of the self-cleaning glass is improved. In the preparation method for the self-cleaning glass, the nano sliver layer with strong bonding force with glass is formed on the surface of the glass by adopting a magnetron sputtering method, and the titanium dioxide layer which is not easy to fall from the glass is formed on the nano sliver layer by a sol-gel method, so the service life of the glass is long; and meanwhile, the preparation method has simple process and the reaction condition is easy to control.

Description

【Technical field】 [0001] The invention relates to the technical field of glass materials, in particular to a self-cleaning glass and a preparation method thereof. 【Background technique】 [0002] At present, there are two research directions for self-cleaning glass, which can form a superhydrophilic or superhydrophobic coating on the surface of the glass. The superhydrophilic coating with a water drop contact angle of less than 10°, and the superhydrophobic coating with a water drop contact angle greater than 110° . TiO 2 The film has superhydrophilicity and photocatalytic degradability. Under light conditions, it can also decompose the adsorbed organic matter and avoid the adhesion of organic pollutants. Therefore, TiO2 is prepared on the glass surface 2 Thin films are used in a wide range of applications. [0003] Currently, the preparation of TiO on the glass surface 2 There are many ways of filming. CN101255019A discloses a colored self-cleaning coated glass, compris...

Claims

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Application Information

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IPC IPC(8): C03C17/36B32B17/06
Inventor 李金儡
Owner BYD CO LTD
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