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Antifogging self-cleaning glass, and preparation method

A self-cleaning, glass technology, applied in the fields of automotive glass, decorative glass, and architectural glass, can solve problems such as incompatibility, poor film adhesion, limited application range and use effect, and achieve good hydrophilic effect

Inactive Publication Date: 2006-12-06
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The existing self-cleaning coatings are mostly prepared by the sol-gel method. This method is characterized by low requirements on production equipment, but has disadvantages such as poor film adhesion and incompatibility with traditional glass coating processes; In addition, there is also a single TiO plated by magnetron sputtering technology. 2 The research on self-cleaning film can be well compatible with the traditional glass coating process, but this single TiO 2 The use effect of the film is highly resistant to ultraviolet radiation conditions, which limits its application range and use effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: A titanium plate with a purity of 99.5% is selected as the sputtering target, the base distance of the target is adjusted to 5.5 cm, and the background vacuum of the sputtering chamber is evacuated to 2.0×10 -4 Pa, thin films are deposited on the cleaned ordinary glass as the substrate. Before the official sputtering, the titanium target is sputtered with argon gas ignition, and the sputtering parameters are adjusted to the set values ​​when the glow changes from pink to blue. The glass substrate was heated to 200°C, the flow rates of argon and oxygen were controlled to 29.5 sccm and 10.5 sccm respectively by a mass flow meter, and the main valve of the sputtering chamber was adjusted to stabilize the working pressure of the sputtering chamber at 0.5Pa. Adjust the sputtering voltage to -470V. At this time, the corresponding sputtering current is 440mA read by the ammeter, and the converted success rate is about 207W. Under these sputtering conditions, the de...

Embodiment 2

[0025] Embodiment 2: SiO is plated on the glass substrate 2 / TiO 2 / SiO 2 Three layers of film. Among them, the underlying SiO 2 The thickness is controlled at 10nm, the middle TiO 2 The layer thickness is controlled at 250nm, and the top layer of SiO 2 The thickness is controlled at 20nm. Other various sputtering parameters are the same as in Embodiment 1. The hydrophilic properties of the three-layer membrane samples are shown in Table 2. Indicates that the underlying SiO 2 The introduction can properly reduce the intermediate TiO 2 The thickness of the layer (to reduce production costs), while taking into account the hydrophilic effect of the film.

[0026] Irradiation time

[0027] The surface of the film sample was irradiated with ultraviolet light with a center wavelength of 365nm and a power density of 7.9mW, and the change process of the contact angle of water on the film surface was measured with a JC 2000A static drop contact angle / surface tension ...

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Abstract

This invention provides a method for mass production of fog-proof and self-cleaning glass. The method comprises: coating TiO2 and SiO2 onto a cleaned glass substrate by DC reactive magnetron sputtering technology and radiofrequency magnetron sputtering technology using pure titanium target and pure silicon dioxide (quartz) target respectively, thus obtaining TiO2 / SiO2 double-layer fog-proof and self-cleaning glass or SiO2 / TiO2 / SiO2 triple-layer fog-proof and self-cleaning glass. The obtained product has better hydrophilicity, lower initial wetting angle, and longer maintaining time after stopping UV radiation than those of TiO2 single-layer glass, and overcomes the shortcoming of strong dependence on environment of present fog-proof and self-cleaning glasses.

Description

technical field [0001] The invention relates to an anti-fog self-cleaning glass and a preparation method thereof, in particular to a method for large-scale industrial production of special glass such as automobile windshields and high-rise curtain wall glass with anti-fog self-cleaning effects, belonging to architectural glass, automobile glass, etc. Glass, decorative glass and other fields. Background technique [0002] With the increasing material conditions, there are row upon row of high-rise buildings in the city, the streets are full of traffic, and the demand for various architectural glass and automotive glass is also increasing exponentially. The cleaning problem of the glass surface thus caused has always been a difficult problem that puzzles people. People try to prepare glass with self-cleaning effect by various methods in an attempt to solve this problem. A method widely accepted by the public is to plate nano-titanium dioxide film on the glass surface. This ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/34C03C17/23C03C4/00
Inventor 王浩王君安汪汉斌杨辅军
Owner HUBEI UNIV
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