A kind of self-cleaning glaze repair glaze for sanitary ceramics, preparation and use thereof

Abstract

The invention provides a self-cleaning glaze repairing glaze for sanitary ceramics and preparation and use thereof. The self-cleaning glaze repairing glaze is prepared from, by mass, 30-40 parts of quartz, 25-35 parts of potassium feldspar powder, 14-20 parts of calcite, 2-6 parts of dolomite, 2-6 parts of aluminium oxide, 5-10 parts of zinc oxide, 0-8 parts of Shujie frit, 0-5 parts of kaolin and2-6 parts of zirconium silicate, wherein the zirconium silicate in the ceramics mainly plays a role of opacification, so the addition of the zirconium silicate can affect the transparency of the glaze, which is used for adjusting the chromatic aberration; the melting temperature and melting time of the provided self-cleaning glaze repairing glaze are very close to the melting temperature and melting time of a ground glaze, which is beneficial to reducing pores; after blemished ceramics are repaired, compared with a traditional repairing glaze and repairing method, the glaze has a small colordifference from the glaze of a ceramic body, few pores and a good repairing effect.

Description

technical field [0001] The invention relates to a self-cleaning glaze repair glaze for sanitary ceramics, its preparation and use. Background technique [0002] A layer of 0.1mm-0.2mm transparent glaze is sprayed on the basis of the bottom glaze, which can improve the smoothness, flatness and appearance of the glaze surface, and is beneficial to the flushing function. [0003] During production, some ceramics will have some small defects that can be repaired. The traditional way of repairing is to use the underglaze repair glaze for repair. Now because a layer of transparent glaze is sprayed on the surface of the bottom glaze, the glazed surface of the product appears to be a white glaze at the bottom and a layer of transparent glaze on the surface. If you directly use the bottom glaze to repair the glaze, it will be repaired after it is fired back. There is a small white spot at the location, and the glaze surface at the repaired location and the glazed surface of the mai...

AI Technical Summary

Problems solved by technology

Now because a layer of transparent glaze is sprayed on the surface of the bottom glaze, the glazed surface of the product appears to be a white glaze at the bottom and a layer of transparent glaze on the surface. If you directly use the bottom glaze to repair the glaze, it will be repaired after it is fired back. There is a small white spot at the location, and the glazed surface at the repaired location and the glazed surface of the main body form an obvious color difference, forming a defect. If the bottom glaze is repaired first, and then repaired with transparent glaze, the transparent glaze becomes liquid during the firing process due to the low temperature of the transparent glaze. In contrast, the bottom glaze is still in the exhaust stage, causing the gas to break through the self-cleaning glaze surface, forming a large pore, and the color difference is also significantly different from the body glaze surface. It is very difficult to repair without color difference and without pores.