Preparation method for opacifying additives of mineral-compound nano titanium dioxide ceramic glazes

Abstract

The invention discloses a preparation method for opacifying additives of mineral-compound nano titanium dioxide ceramic glazes. Firstly, by using tetrabutyl titanate as a precursor, the sol-gel method is adopted to prepare a nano titanium dioxide / white diatomite photocatalyzed compound material; nano titanium dioxide, carboxymethyl cellulose and the like are added into the nano titanium dioxide-white diatomite compound through ultrasonic dispersion to obtain the additives in an emulsion state, and the obtained additives are added into the ceramic glazees and coated on the surface of the ceramic body through high-temperature calcining; during high-temperature calcining, nano calcium carbonate is wrapped by the nano titanium dioxide-white diatomite compound. The binding reaction between nano calcium carbonate and the nano titanium dioxide particles at the phase interface is achieved through hydroxy groups on the surfaces of nano calcium carbonate and the nano titanium dioxide particles, thereby guaranteeing stable binding of nano calcium carbonate and the nano titanium dioxide particles, and obtaining smooth and fine glazes which are not likely to become yellow and has good whiteness after calcining.

Description

technical field [0001] The invention relates to the technical field of ceramics, in particular to a preparation method of a mineral composite nano-titanium dioxide ceramic glaze opacifying additive. Background technique [0002] With the development of society and scientific progress, people have higher and higher requirements for the quality of ceramic products. For ceramic products, the quality of glaze is one of the key factors affecting their quality. The glaze quality of ceramic products is not only related to the characteristics of glaze slurry and glazing process, but also related to the types of additives used, especially the rapid development of today's ceramic industry, the application of rapid prototyping, rapid firing and inkjet printing technology The rapid increase of ceramic production capacity corresponds to the sharp reduction of high-quality ceramic raw materials caused by long-term disorderly excavation and extensive production. In order to obtain the prod...

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Problems solved by technology

At the same time, the method of direct coating is used to coat the titanium dioxide sol on the base of ordinary ceramic glazed tiles to prepare titanium dioxide film ceramic tiles, which have good hydrophilicity. However, in the present invention, the glazed tiles with excellent quality are used as the substrate, which belongs to For high-end products, the cost of raw materials is high, which naturally leads to high prices. Most of the daily-use ceramic products of ordinary quality exist in the market, and the whiteness of the ceramic body is not high. High-quality glazes can not only improve the whiteness, but also have a certain self-cleaning performance. At the same time, the cost is not high, and it is convenient for most people to promote. This requires in-depth research on glaze additives to meet the needs of ordinary quality ceramics. The needs of the green body change the quality requirements