Method for preparing self-cleaning toughened glass

A tempered glass, self-cleaning technology, applied in the field of functional materials, can solve the problems of unstable performance of self-cleaning glass, low photocatalytic activity, high heat treatment temperature, and achieve good photocatalytic and photo-induced hydrophilicity, high light transmittance , the effect of stable performance

Inactive Publication Date: 2011-09-07
北京中科华纳技术发展有限公司
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0010] Another object of the present invention is to overcome the problems of unstable self-cleaning glass performance, single induction method, high heat treatment temperature and unsuitability for existing glass production lines, and low photocatalytic activity in the prior art, and provide a variety of methods Self-cleaning tempered glass with induced excitation and stable performance

Method used

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  • Method for preparing self-cleaning toughened glass
  • Method for preparing self-cleaning toughened glass

Examples

Experimental program
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Effect test

Embodiment 1

[0035]Remove all labels and dirt on the glass surface to ensure that the glass surface is clean, and then wash off the dust on the glass surface with water. Use a glass polishing powder of about 400 mesh (the mixing ratio of polishing powder and deionized water is 1:10) to polish the glass surface with a rotating disk, then rinse the dirt and polishing powder on the glass surface with water, and use a fan with a filter to clean the surface of the glass. Dry the moisture on the glass surface to ensure that the glass surface is clean without any dust, and then use high-purity nitrogen to purge the glass surface. Use a spray gun to evenly spray nano self-cleaning coating with a concentration of 10g / l on the glass surface (speed 1 m / s), and cure at normal temperature and pressure to obtain super-hydrophilic self-cleaning glass.

[0036] Then acid-treat the surface of the cured self-cleaning glass. The acid used is 0.5M HCl aqueous solution. The soaking time is 1 hour. After taking...

Embodiment 2

[0040] Clean the original glass sheet, dry the surface with a hair dryer, and evenly spray the self-cleaning nano-coating with a concentration of 25g / l on the glass surface (speed 2.5 m / s) with a spray gun. If there is too little cleaning coating, the film formation is not good, resulting in a significant decrease in its photocatalytic activity.

Embodiment 3

[0042] Use 400-mesh glass polishing powder to polish the glass surface with a rotating disc, then rinse the dirt and polishing powder on the glass surface with water, dry it naturally in a clean place, and spray the self-cleaning nano-coating with a concentration of 20g / l evenly with a spray gun Superhydrophilic self-cleaning glass can be obtained by curing at normal temperature and pressure on the glass surface (speed 0.9 m / s). Then acid-treat the surface of the cured self-cleaning glass. The acid used is 3M acetic acid aqueous solution. The soaking time is 2 hours. After taking it out, rinse it with tap water, rinse it with deionized water, and dry it under natural conditions. Then the prepared self-cleaning glass was tempered at 700°C for 550 seconds. The treated self-cleaning glass maintained good superhydrophilic properties and photocatalytic properties, but due to the slow spraying speed, the light transmittance of the glass surface was significantly reduced. However, th...

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Abstract

The invention belongs to the technical field of functional materials, particularly relating to the offline and online production technology for normal temperature and pressure nano self-cleaning glass, especially to a manufacturing method for normal temperature self-cleaning tempered glass. The invention will first enables the nano-coating with visible light activity to be pre-crystalled, and coat the pre-crystalled coating on the surface of the glass, then form crystal rapidly under the condition of 700 DEG C transient high temperature treatment required in the tempered glass preparation process, so as to achieve tempering and simultaneously realize super-hydrophilicity and photocatalytic activity on the glass surface. The nano-self-cleaning coating on the glass surface is more strengthened through transient high temperature, so as to improve the service life of the self-cleaning coating.

Description

technical field [0001] The invention belongs to the technical field of functional materials, and in particular relates to the off-line and on-line production technology of normal temperature and pressure nano self-cleaning glass, especially the preparation method of normal temperature self-cleaning toughened glass. Background technique [0002] In recent years, my country's architectural glass industry has developed rapidly, but its cleaning methods have not changed. Manual cleaning is inconvenient and unsafe. In addition, long-term use of cleaning agents not only wastes resources, but also pollutes the environment, which is not in line with the current policy of environmental protection and conservation advocated by the state. The emergence of self-cleaning nano glass has brought people a new way of cleaning and maintaining glass. [0003] Studies have shown that TiO 2 The film has the function of self-cleaning. Under the condition of light, TiO on the surface of various ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/23C03C17/00
Inventor 张玲娟江雷
Owner 北京中科华纳技术发展有限公司
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