Ceramic glaze and preparation method thereof

Abstract

The invention discloses ceramic glaze prepared from the following components in weight percentages: 40 to 80% of SiO2, 8 to 20% of Al2O3, 0 to 5% of B2O3, 3 to 13% of CaO, 1 to 6% of MgO, 1 to 10% of BaO, 0 to 5% of ZnO, 1 to 4% of K2O, 1 to 4% of Na2O, 5 to 13% of ZrO2, 0 to 0.5% of Fe2O3, and 0 to 0.5% of TiO2. The invention also discloses a preparation method of the ceramic glaze. In the preparation method of the invention, some raw materials in the glaze formula are calcined at high temperature in advance, which helps to reduce defects such as bubbles and pinholes on the glaze and improves the quality of a product, meanwhile, the melting temperature of the glaze is properly reduced, the fluidity of a glaze melt at the high temperature is increased, and a flat, fine and smooth surface can be easily obtained. By adoption of the preparation method of the invention, the matte glaze with good hand feel and low glossiness can be obtained, and the high gloss glaze with a smooth surface and without pinholes or bubbles can also be obtained, so as to obtain the ceramic product with more excellent performance.

Description

technical field [0001] The invention relates to the field of ceramic preparation, in particular to a high-performance ceramic glaze and a preparation method thereof. Background technique [0002] The glaze layer on the ceramic surface can not only have a good decorative effect, but also improve the surface properties of the body and the performance of the product. Therefore, high-performance glazes can greatly increase the added value of the product. [0003] There are many types of ceramic glazes, which can be divided into matte glazes and bright glazes according to the glossiness. In order to reflect the vicissitudes of the years and the heaviness of history, a layer of matte glaze is usually applied to the surface of the antique brick. The low gloss of the matte glaze surface is generally achieved by adjusting the content of alumina. To achieve ultra-low gloss (3-10°) of the glaze, it is necessary to introduce a large amount of alumina, but the content of alumina is too ...

AI Technical Summary

Problems solved by technology

The low gloss of the matte glaze surface is generally achieved by adjusting the content of alumina. To achieve ultra-low gloss (3-10°) of the glaze, it is necessary to introduce a large amount of alumina, but the content of alumina is too high. When it is high, it will often lead to rough glaze surface and poor hand feeling. It is difficult to ensure good glaze smoothness while achieving ultra-low gloss with the current glaze preparation technology

[0004] For one-time fast-fired bright glaze stoneware tiles, in order to obtain a super bright glaze with high gloss and smooth surface (gloss ≥ 85°), it is usually necessary to introduce a large amount of low-temperature material or low-temperature frit into the glaze, but the introduction These raw materials will greatly reduce the initial melting temperature of the glaze, which is not conducive to the exhaust of the glaze surface during the high-temperature process, resulting in pinholes and even open bubbles on the glaze surface of the product after a quick firing, which seriously reduces the quality of the product