A kind of ultra-smooth white glaze and preparation method thereof

Abstract

The invention relates to the field of ceramics, in particular to super smooth white glaze and a preparation method thereof. The super smooth white glaze is prepared from the following raw materials inparts by mass: 1 to 2 parts of spodumene, 3 to 11 parts of potash feldspar, 8 to 15 parts of quartz, 2.5 to 6 parts of aluminum oxide, 2 to 7 parts of calcite, 1 to 3 parts of dolomite, 1 to 3 partsof wollastonite, 7 to 9 parts of ultrafine zirconium silicate, 50 to 68 parts of high-temperature molten block and 2 parts of kaolin. The production cost of enterprises is not improved; meanwhile, primary glazing and primary firing process are used; conventional raw materials are introduced; the glaze slurry formula is reasonably regulated; the sufficient intensity of the glaze surface is ensured;meanwhile, the super smooth technology of the glaze surface is finally realized; the glaze surface dirt adsorption problem is solved.

Description

technical field [0001] The invention relates to the field of ceramics, in particular to an ultra-smooth white glaze and a preparation method thereof. Background technique [0002] The current anti-fouling and easy-cleaning technology is mainly divided into three categories: one is to introduce nano-materials and bake them at low temperature (500-600°C) to form a protective film to prevent the glaze from absorbing dirt , but this process uses low-temperature baking, which will lead to a decrease in acid and alkali resistance and hardness of the protective film, which will seriously affect the anti-fouling ability of the glaze; [0003] The second way is to adopt the method of "bottom glaze + self-cleaning glaze". The invention patent with the publication number of CN101870593A discloses a high-hardness self-cleaning glaze and its preparation method. Zirconium, adjust the formula of glaze slurry and control the glaze slurry particle size (≤10 microns) to account for 70%-80% o...

AI Technical Summary

Problems solved by technology

[0002] The current anti-fouling and easy-cleaning technology is mainly divided into three categories: one is to introduce nano-materials and bake them at low temperature (500-600°C) to form a protective film to prevent the glaze from absorbing dirt , but this process uses low-temperature baking, which will lead to a decrease in acid and alkali resistance and hardness of the protective film, which will seriously affect the anti-fouling ability of the glaze;

[0003] The second way is to adopt the method of "bottom glaze + self-cleaning glaze". The invention patent with the publication number of CN101870593A discloses a high-hardness self-cleaning glaze and its preparation method. Zirconium, adjust the formula of glaze slurry and control the glaze slurry particle size (≤10 microns) to account for 70%-80% of the total volume. Through these measures to achieve ultra-smooth glaze surface, the glazing process adopted in this invention is to spray the bottom first Glaze, the thickness of the glaze layer is (0.7mm-1.0mm before firing), and then apply a layer of self-cleaning glaze, the thickness of the self-cleaning glaze layer is (0.1mm-0.2mm before firing), the existence of this combination The problem is that the production process is complicated, and the thickness of the self-cleaning glaze layer is very thin, which is extremely difficult to control. If the self-cleaning glaze layer is too thick, the overall refractoriness of the self-cleaning glaze layer will decrease sharply during firing. As a result, a large number of pinhole bubbles will be generated, which will seriously affect the super-smoothness of the glazed surface. If the thickness of the self-cleaning glaze layer is thin, the proper super-smooth effect will not be achieved, which will seriously affect the anti-fouling and easy-to-clean ability of the glazed surface

The invention patent with the publication number CN104892032A discloses a long-lasting and easy-to-clean surface glaze formula and its method for preparing sanitary ware. The actual glazing method is consistent with the invention patent with the publication number CN101870593A, except that the chemical composition of the surface glaze is different. At the same time, the thickness of the top glaze increases from 0.4mm to 0.6mm. Also, because the contact surface of the top glaze is the bottom glaze instead of the body, and the thickening of the top glaze layer will lead to a sharp decrease in the overall refractoriness , which will produce a large number of pinhole bubbles, seriously affecting the ultra-smooth glaze;

[0004] The third is to use a one-time glazing process. The invention patent with the publication number CN106517793A discloses a new type of ultra-fine self-cleaning glaze and its preparation process. By grinding the traditional ceramic glaze to a median particle size of D50≤1 micron, the traditional Ceramic glaze slurry, ultra-fine glaze slurry, anti-shrinkage agent and silver-loaded antibacterial agent are adjusted in different proportions to achieve the stain resistance of the glaze surface, through simple particle size gradation control (grinding traditional glaze slurry to medium Diameter D50≤1 micron), there is no significant improvement in the microstructure of the glaze layer in essence, so the ultra-smoothness of the glaze surface is also limited. It will consume a lot of precious electricity and energy, which will seriously increase the production cost of the enterprise

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