Preparation method of ceramic tile with ultra-matte effect

Abstract

The invention discloses a preparation method of a ceramic tile with an ultra-matte effect. The preparation method comprises the following steps: (1) preparing a ceramic green body; (2) coating of cover glaze; (3) ink-jet printing; (4) coating of dry granular glaze; and (5) drying and sintering. The softening temperature of the dry granules A is 1150-1190 DEG C, and the softening temperature of the dry granules B is 1010-1070 DEG C. The melting temperature of the whole dry granule glaze layer can be adjusted by matching the two kinds of dry granules at different temperatures and changing the composition proportion of the two kinds of dry granules, so that the glossiness, the hand feeling and the antifouling property of a glaze surface are adjusted, the good fine and smooth hand feeling and the excellent antifouling property are guaranteed, and meanwhile, the anti-fouling performance of the glaze surface is improved. The glossiness of a dark-color product can be 0-1 degree, and the glossiness of a light-color product can be 1-3 degrees; the dry granular glaze contains two fine dry granules with different melting temperature ranges, and can adapt to a relatively large range of firing temperature through formula adjustment, the effect is achieved under the conditions that the firing period is 50-70 minutes and the firing temperature is 1190-1226 DEG C, and the problems that the matte brick is not low enough in glossiness, poor in hand feeling and not easy to clean are solved.

Description

technical field [0001] The invention relates to the technical field of preparation of ceramic tiles, in particular to a method for preparing ceramic tiles with a super matt effect. Background technique [0002] Ceramics are generally composed of two parts: a body and a glaze. The body is the main part of the ceramic, which is used for firing and molding and has high compressive strength; the glaze is a thin glassy layer covering the surface of the body, which has high hardness, High wear resistance, at the same time play a role in beautifying the surface of ceramics. The performance of ceramic glaze is the embodiment that determines whether ceramic products are competitive in the industry. Beautiful, clean, durable and cheap ceramics are often the first choice of consumers, and glaze can provide consumers with the most intuitive feeling. Matte tiles refer to tiles with relatively low reflectivity. The surface of matt tiles is still relatively flat, and there is no obvious ...

AI Technical Summary

Problems solved by technology

Chinese patent CN202011153711.4 discloses a ceramic tile with a matt dry glaze and a matte dry glaze effect. The glazed surface is realized by using a crystallization surface glaze and a dry glaze with 40-45% crystallization protective glaze. However, this process requires crystallization for both the surface glaze and the protective glaze. The crystallized glaze has poor color and cannot reflect the colorful pattern design. The precipitated fine crystals can be seen on the glaze surface, which affects the appearance of the glaze surface.

At the same time, the dry glaze in this process contains a large proportion of protective glaze, and the glaze surface will lack the granular feel of the dry glaze after firing.

Chinese patent CN111116238A discloses a method for preparing ceramic tiles with low gloss and imitation stone effect. The matte effect is achieved by sticking matte dry particles with digital glue, and then spraying a layer of matting protective glaze. The process is complicated. Moreover, the cost of digital glue is high, which is not conducive to large-scale mass production

Images