Whitening agent for ceramic blank body and preparation method thereof

Abstract

The invention discloses a whitening agent for a ceramic blank body. The whitening a gent comprises the following materials in parts by weight: 35-40 parts of titanium dioxide, 60-70 parts of aluminium hydroxide, 5-8 parts of kaolin, 12.5-15.5 parts of active micro silicon powder, 2-4 parts of zinc nitrate, 3-4 parts of barium carbonate, 2-4 parts of talc powder, 4-9 parts of aluminium oxide, 7-8 parts of disodium edetate dihydrate, 9-10 parts of sodium hexametaphosphate, 2-7 parts of nickel oxide, 4-7 parts of lithium borohydride and 1-6 parts of magnesium-calcium stone. The whitening agent disclosed by the invention has the advantage that the whitening effect and the antibacterial effect of ceramics are improved.

Description

technical field [0001] The invention relates to a material, more specifically to a whitening agent for a ceramic green body and a preparation method thereof. Background technique [0002] Since the 90s of last century, zirconium silicate has been used as a whitening agent and strengthening agent for building ceramics. However, my country is a country lacking in zirconium resources. More than 95% of zircon sand is all dependent on imports. Zirconium silicate is more than 700,000 tons, which is expensive. Moreover, the use of zirconium silicate in ceramic bodies can significantly increase the radioactivity of ceramics and increase environmental pollution, so it is not suitable for daily-use ceramics. At present, the products replacing zirconium silicate are mainly used in ceramic glazes, and these substitute materials cannot be used in ceramic bodies. Patent No. CN103936427A, one of the applicant's early applications, discloses a whitening agent for ceramic blanks, but this w...

AI Technical Summary

Problems solved by technology

[0002] Since the 90s of last century, zirconium silicate has been used as a whitening agent and strengthening agent for building ceramics. However, my country is a country lacking in zirconium resources. More than 95% of zircon sand is all dependent on imports. More than 700,000 tons of zirconium silicate is expensive

Moreover, the use of zirconium silicate in the ceramic body can significantly increase the radioactivity of the ceramics, which increases environmental pollution, and is not suitable for daily-use ceramics.

At present, the products replacing zirconium silicate are mainly used in ceramic glazes, and these substitute materials cannot be used in ceramic bodies

Patent No. CN103936427A, one of the applicant's early applications, discloses a whitening agent for ceramic blanks, but this whitening agent has limited whitening effect on ceramics, and cannot improve the brightness and gloss of ceramics very well. The coverage of the block is not strong enough to highlight the beauty of the pottery texture, and because it does not have antibacterial properties, it will lead to a large number of microorganisms such as bacteria on the surface of daily-use ceramics, posing a threat to the health of users