Antibacterial ceramic tile and preparation method thereof

Abstract

The invention discloses an antibacterial ceramic tile. The antibacterial ceramic tile comprises an antibacterial glaze layer arranged on the upper surface of a ceramic tile; the antibacterial glaze layer is composed of a basic transparent glaze and a zirconium phosphate loaded composite antibacterial agent; the zirconium phosphate loaded composite antibacterial agent comprises a zirconium phosphate carrier and a composite antibacterial agent; the zirconium phosphate loaded composite antibacterial agent is accumulated at the upper part of the antibacterial glaze layer, and antibacterial effective components of the composite antibacterial agent are antibacterial oxides and antibacterial ions. According to a preparation method, zirconium phosphate is introduced into the antibacterial glaze layer on the surface of the ceramic tile; by utilizing the characteristic of low density of zirconium phosphate, zirconium phosphate is accumulated at the upper part of the glaze layer after being sintered at a high temperature to form a surface with a porous structure, so that the zirconium phosphate is used as a carrier to which the composite antibacterial agent is attached, the binding force of antibacterial materials and the ceramic tile is enhanced, the ceramic tile is endowed with long-acting and excellent antibacterial performance, and meanwhile, the surface appearance decoration effect of the ceramic tile is not influenced. The invention further discloses a preparation process of the antibacterial ceramic tile, and the preparation process is simple in step, high in controllability and beneficial to large-scale industrial production.

Description

technical field [0001] The invention relates to the field of architectural ceramics, in particular to an antibacterial ceramic brick. Background technique [0002] With the improvement of living standards and working environment, people's requirements for architectural ceramics have gone beyond their pure architectural decoration functions, and more and more attention has been paid to their functional applications. The functionalization of ceramics has become one of the main directions for the development of the domestic ceramic industry. The antibacterial performance of architectural ceramics is of great significance for enhancing the added value of products. At present, antibacterial ceramics mainly include the following categories: the first is to directly add antibacterial materials to ceramic tiles and mix and fire them. For example, Chinese patent CN103641439A discloses an antibacterial ceramic tile and its preparation method. 30-40 parts of ceramic clay, 1-10 parts ...

AI Technical Summary

Problems solved by technology

But above-mentioned three kinds of antibacterial ceramics all have certain shortcoming

The first type of antibacterial ceramics, because the antibacterial material is directly added to the ceramic tile body or glaze and fired, and its antibacterial active ingredients are coated in the body or glaze, its antibacterial effect will be greatly reduced

The second type of antibacterial material is sprayed on the surface and then fired, but the structure of the antibacterial material is destroyed after high temperature heat treatment, and the antibacterial effect is significantly reduced, and a certain amount of antibacterial material is attached to the surface of the ceramic tile. During high temperature heat treatment, it is easy to react with the glaze surface and affect the surface decoration effect

The third type adopts low-temperature heat treatment. The antibacterial layer has weak bonding force with the glaze surface. In practical application, the antibacterial layer is easy to fall off, and the antibacterial durability is poor.

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