Porcelain high-whiteness glazed tile and preparation method thereof

Abstract

The invention discloses a porcelain high-whiteness glazed tile and a preparation method thereof. The porcelain high-whiteness glazed tile comprises a whitening glaze layer, a porcelain green body layer and a surface glaze layer, the whitening glaze layer is located on the bottom face and / or the side face of the porcelain green body layer, and the surface glaze layer is located on the upper surfaceof the porcelain green body layer, wherein the whitening glaze layer is formed by firing whitening glaze, the porcelain green body layer is formed by firing a porcelain green body, the difference value between the melting temperature of the whitening glaze and the melting temperature of the porcelain green body is smaller than or equal to 3 DEG C, and the difference value between the expansion coefficient of the whitening glaze and the expansion coefficient of the porcelain green body is smaller than or equal to 3, and the raw material of the whitening glaze layer comprises zirconium silicate. According to the porcelain high-whiteness glazed tile provided by the technical scheme, the whitening glaze is applied to the tile body, so that the hue of the side surface and / or the bottom surfaceof the glazed tile finished product is consistent with the hue of the top surface of the glazed tile finished product. The invention further provides a preparation method of the porcelain high-whiteness glazed tile, which is beneficial to preventing the whitening glaze from falling off and ensuring the consistent hue of the porcelain high-whiteness glazed tile finished product, and is simple in process and high in operability.

Description

technical field [0001] The invention relates to the technical field of architectural ceramics, in particular to a porcelain high-whiteness glazed tile and a preparation method thereof. Background technique [0002] Since the production process of glazed tiles is glazed on the green body layer and then fired, better raw materials are often used for the decorative effect of the glazed layer. In order to reduce costs, manufacturers mostly use cheap raw materials for the green body layer. The difference in the quality of the raw materials of the body layer leads to the difference in hue between the bottom and the face of the finished body, especially the obvious difference in whiteness and oxidation degree, which makes the color tone of the bottom surface of the finished ceramic tile different from that of the side and top surface, which gives Customers have a feeling of "two skins, different appearances", which affects product sales. Contents of the invention [0003] The ob...

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Problems solved by technology

[0002] Since the production process of glazed tiles is glazed on the green body layer and then fired, better raw materials are often used for the decorative effect of the glazed layer. In order to reduce costs, manufacturers mostly use cheap raw materials for the green body layer. The difference in the quality of the raw materials of the body layer leads to the difference in hue between the bottom and the face of the finished body, especially the obvious difference in whiteness and oxidation degree, which makes the color tone of the bottom surface of the finished ceramic tile different from that of the side and top surface, which gives Customers have a feeling of "two skins, different appearances", which affects product sales

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