Glaze for reducing pores on foamed ceramic surface and preparation method thereof

Abstract

The invention provides a glaze for reducing pores on a foamed ceramic surface and a preparation method thereof. The glaze comprises the following raw materials by mass: 23-27 parts of potassium feldspar, 13-17 parts of perlite, 4-6 parts of calcined talc, 2-4 parts of calcined zinc oxide, 8-10 parts of lithium chinastone, 38-42 parts of transparent frit and 2-4 parts of pure aluminum oxide. The method includes the steps of: S1, preparation of raw materials; S2, ball milling; S3, iron removal; S4, glazing; S5, ink jetting; and S6, firing. According to the invention, a proper amount of potassiumfeldspar, calcined talc, calcined zinc oxide, lithium chinastone and pure aluminum oxide are introduced into the raw material formula of the glaze, so that the high-temperature viscosity and surfacetension of the glaze are optimized, the capability of the glaze is better displayed, pores on a foamed ceramic surface are effectively reduced, and the product performance is improved.

Description

technical field [0001] The invention relates to the technical field of ceramic insulation board production, in particular to a glaze for reducing pores on the surface of foamed ceramics and a preparation method thereof. Background technique [0002] The application of glaze in ceramics has a long history. Ceramic glaze not only has the function of coloring, enriching the color and pattern of ceramics, but also can protect ceramics, enhance the flexural strength of ceramics, improve the wear resistance of ceramics, and increase the cleaning ability of ceramics. Wait. There is a big difference between foamed ceramics and traditional ceramics. Foamed ceramics have a strong thermal insulation effect and a small volume density, but the flexural and compressive strength of foamed ceramics are far lower than traditional ceramics. This is because The bottom layer of foamed ceramics is composed of sealed hollow holes. Although there is a layer of fabric on it to improve the strength...

AI Technical Summary

Problems solved by technology

If the surface tension is too large, it will hinder the removal of gas and the homogenization of the melt, and the wettability of the billet at high temperature is not good, which will easily cause glaze shrinkage defects; if the surface tension is too small, it will easily cause "flowing glaze" and make the glaze surface When the small pores are broken, the pinholes are difficult to bridge and form defects