High-temperature-resistant glaze

Abstract

The invention provides high-temperature-resistant glaze. The glaze is prepared from the following raw materials: silicon dioxide, nano yttrium oxide, modified glass fibers, a rheological agent, kaolin, lithium oxide, sodium carboxymethyl cellulose and nano neodymium oxide. The nano yttrium oxide, the modified glass fibers, the lithium oxide and the nano neodymium oxide in the high-temperature-resistant glaze can enhance the heat resistance of the glaze, tiny gaps are formed in the glaze so that glaze shrinkage is reduced, cracking is not caused under a relatively large temperature difference,the melting temperature and the thermal expansion coefficient of the glaze are also reduced, thermal stability is improved, the fired ceramic glaze has few pinholes, is fine and smooth and has good glossiness, the rheological agent and the sodium carboxymethyl cellulose are added so that the fluidity and thixotropy of the glaze can be improved, the binding force of the glaze and a green body is effectively improved, and the smoothness of a glaze layer is increased, so that the high-temperature-resistant glaze disclosed by the invention not only has very good thermal stability, but also the glaze layer formed on ceramic has very good glossiness, and the surface smoothness can be kept.

Description

technical field [0001] The invention belongs to the technical field of ceramic glazes, and in particular relates to a high-temperature-resistant glaze. Background technique [0002] Ceramics are various products made of natural clay and various natural minerals as the main raw materials through crushing, kneading, molding and calcination. In the past, people called ceramics made of clay and fired at high temperature in special kilns. Ceramics is the general term for pottery and porcelain. The traditional concept of ceramics refers to all artificial industrial products that use inorganic non-metallic minerals such as clay as raw materials. It includes various products made of clay or a mixture containing clay through kneading, shaping, and calcination. It ranges from the roughest earthenware to the finest fine pottery and porcelain. Its main raw material is silicate minerals (such as clay, quartz, etc.) taken from nature, so it belongs to the category of "silicate industry...

AI Technical Summary

Problems solved by technology

[0004] The existing high-temperature-resistant composite daily-use ceramic glazes still have certain defects, which are mainly reflected in the process of preparing daily-use ceramics. In order to reduce glaze pinholes and increase gloss, a large amount of solvent will be added to the glaze, which will lead to The thermal expansion coefficient of ceramics is too large, and the thermal stability is poor. When heated, the molecular structure will be destroyed. With the development of microwave ovens, hot dishes and rice often appear. Therefore, there is an urgent need for a thermally stable product in the market. High temperature resistant ceramic glaze

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