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Film coating method for self-cleanness glass ceramics

A glass-ceramic and self-cleaning technology, applied in the field of glass-ceramic preparation, can solve the problems of high mechanical strength, low thermal expansion coefficient, no self-cleaning function, etc., and achieve the effect of good modification effect and strong hydrophobicity

Inactive Publication Date: 2013-03-27
JIANGSU YITA NEW MATERIAL TECH
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  • Abstract
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Problems solved by technology

[0002] At present, the commonly used self-cleaning glass mainly uses ordinary glass for surface coating treatment to achieve self-cleaning function, but the material of ordinary glass itself limits the application range of self-cleaning glass, while glass-ceramic has a low thermal expansion coefficient and high Excellent mechanical strength, widely used, but does not have self-cleaning function

Method used

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Embodiment Construction

[0010] The technical scheme of the present invention is described in conjunction with the specific embodiment, and the embodiment is:

[0011] (1) Ingredients according to the weight ratio, blast furnace slag 190kg, orthoclase feldspar 20kg, the raw materials are ball milled, dried, and dry-pressed respectively, and then sintered under normal pressure air atmosphere at 1200°C for 2 hours. ;

[0012] (2) Mix tetraethoxysilane, absolute ethanol and distilled water in a volume ratio of 4:8:1, add dilute hydrochloric acid dropwise, adjust the pH value to 3-4, stir, and let stand to form a silica sol;

[0013] Then weigh the silica sol and polytetrafluoroethylene emulsion, the volume ratio is 1:17, first pour the silica sol into the container and stir, during the stirring process, add the tetrafluoroethylene emulsion drop by drop, adjust the pH value with dilute hydrochloric acid 9-10, magnetic stirring, airtight aging at room temperature for 8 hours to form a modification solutio...

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Abstract

The invention relates to a preparation method for glass ceramics, in particular to a film coating method for glass ceramics with self-cleanness function, namely a film coating method for self-cleanness glass ceramics. The method comprises the steps: taking blast furnace slag and orthoclase as raw materials to prepare glass ceramic blanks, preparing silica sol / polytetrafluoroethylene plating solution by utilizing sol-gel process, conducting film coating on the surface of the glass ceramic by utilizing a dip-coating method, and finally conducting thermal treatment to the obtain the glass ceramics with the surface having self-cleanness function. The principle crystalline phase of the prepared glass ceramics is akermanite, the polytetrafluoroethylene plays a good modification role on the silica sol, and the contact angle of the self-cleanness glass ceramics can achieve 120 degrees, thereby having strong hydrophobicity.

Description

technical field [0001] The invention relates to a method for preparing a glass-ceramic, in particular to a method for coating a glass-ceramic with a self-cleaning function, that is, a method for coating a glass-ceramic with a self-cleaning function. Background technique [0002] At present, the commonly used self-cleaning glass mainly uses ordinary glass for surface coating treatment to achieve self-cleaning function, but the material of ordinary glass itself limits the application range of self-cleaning glass, while glass-ceramic has a low thermal expansion coefficient and high Excellent mechanical strength, widely used, but does not have self-cleaning function. Contents of the invention [0003] Aiming at the above technical problems, the present invention provides a method for producing a glass-ceramic coating film with self-cleaning function, comprising the following steps: [0004] (1) Ingredients are formulated according to the weight ratio, the ratio of blast furna...

Claims

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Application Information

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IPC IPC(8): C03C17/25C03C17/32
Inventor 蒋达光
Owner JIANGSU YITA NEW MATERIAL TECH
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