Fluorescent glaze and preparation method thereof

Abstract

The invention provides a fluorescent glaze and a preparation method thereof. The fluorescent glaze is mainly prepared from the following raw materials by weight percentage: 50%-70% of glass frit, 20%-40% of feldspar and 2%-15% of calcined kaolin. The preparation method comprises the following steps of: firstly, mixing feldspar, calcium carbonate, barium carbonate, zinc oxide, aluminium oxide, borax, boric acid, quartz, strontium carbonate, vanadium pentoxide and bismuth oxide together in a certain weight ratio and then smelting the mixture at a temperature in the range from 1250 to 1350 DEG C; secondly, forming the glass frit after water quenching; and then enabling the glass frit to be subjected to coarse crushing, fine crushing and dosing grinding orderly, and mixing the ground powder with the feldspar and the calcined kaolin proportionally through a ball mill and grinding evenly, thereby obtaining the fluorescent glaze. The fluorescent glaze provided by the invention is free of rare-earth element, and can be excited under either natural light or a fluorescent lamp; the fluorescent glaze is high in fluorescent brightness and has persistence as long as 1300 min; the process of the preparation method of the fluorescent glaze is simple and capable of well meeting common requirements of the building ceramic industry.

Description

technical field [0001] The invention relates to the technical field of architectural sanitary ceramic decoration, in particular to a composition of fluorescent glaze and a preparation method thereof. Background technique [0002] The research history of photoluminescent materials is very long. It can be traced back to 1866 when the Frenchman Sidot prepared the first long-lasting luminescent material with practical application significance. . On this basis, people have developed , and And other afterglow materials with better performance. However, sulfide materials are very unstable and have many disadvantages, such as poor light resistance, poor moisture resistance, and short afterglow time. In recent years, materials such as rare earth doped aluminates have been extensively studied, such as and adulterated , , . It has the advantages of high luminous efficiency, long afterglow time, and no radioactive hazards. It is widely used in night emergency instruc...

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Problems solved by technology

In the field of building materials, it can be used to produce fluorescent glazes with fluorescent effects, such as patent number: 99123083.3, the patent name is luminous glazes, and the disclosed technology mainly uses the mixed processing of basic glazes and synthetic rare earth doped phosphor materials It has the advantages of high luminous intensity and good stability; in recent years, with the reduction of rare earth resources in China and the sharp rise in the price of rare earth materials, the cost of using rare earth materials in the field of building materials has also risen sharply; The conditions of this kind of phosphor are relatively high, and the process is relatively complicated; therefore, it is of great significance to develop a fluorescent glaze that is simple in process and does not contain rare earths.

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