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Bone china lead-free glaze

A kind of porcelain lead-free glaze and lead-free glaze technology, applied in the field of bone china lead-free glaze, can solve the problems of factory environment damage, physical damage, etc., and achieve the effect of high brightness and whiteness, moisturizing glaze surface, and improving glaze surface hardness

Inactive Publication Date: 2009-03-04
SHANGHAI HENGLI PORCELAIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It also causes damage to the health of the operators who are engaged in bone china production, and damages the environment of the factory.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Silicon dioxide 50%, aluminum oxide 9.5%, calcium oxide 9%, magnesium oxide 2.5%, potassium oxide 6.3%, sodium oxide 1.5%, zinc oxide 15%, barium oxide 2%, boron trioxide 3%, lithium oxide 1.2% composition;

Embodiment 2

[0013] Silicon dioxide 51%, alumina 9%, calcium oxide 9%, magnesium oxide 2.5%, potassium oxide 6.3%, sodium oxide 1.5%, zinc oxide 14.32%, barium oxide 2.2%, boron trioxide 2.98%, lithium oxide 1.2% composition;

Embodiment 3

[0015] Silicon dioxide 52%, alumina 9%, calcium oxide 9%, magnesium oxide 2.5%, potassium oxide 6.3%, sodium oxide 1.5%, zinc oxide 13.32%, barium oxide 2.2%, boron trioxide 2.98%, lithium oxide 1.2% composition;

[0016] The application of the lead-free glaze of the present invention on the bone china broadens the firing range of the bone china (the firing temperature is widened by more than 20°C). It solves the defect of narrow firing range of bone china, and improves the hardness index of bone china's thermal stability (160°C--20°C). The heat exchange is not listed three times. Improve the glaze hardness of bone china and increase its use times. Moisturize the glazed surface of bone china, with high brightness and whiteness, and high regularity.

[0017] Through the use of the present invention, ① the problem of bone china lead (Pb) dissolution is solved, and the product completely passes the national standard formulated by the national quality inspection department. It ...

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Abstract

The invention relates to lead free glaze for bone china. According to the molecular percentage, the lead free glaze is composed of 50-52 percent of silicon dioxide, 9.02-10.28 percent of aluminum oxide, 8.98-10.28 percent of calcium oxide, 2.343.24 percent of magnesia, 6.28-7.65 percent of potassium oxide, 1.24-1.89 percent of sodium oxide, 13.28-16.23 percent of zinc oxide, 1.98-3.42 percent of baryta, 2.98-3.34 percent of boron trioxide and 1.17-1.67 percent of lithium oxide; the lead free glaze has the advantages that the hardness of glaze surface of the bone china is enhanced, and the frequency of use thereof is increased; the glaze surface of the bone china is moist, the brightness and the whiteness are high, and the tacticity is high; the European and American standards on the lead release (pb) of the bone china are achieved or exceeded.

Description

technical field [0001] The invention relates to a porcelain material, in particular to a bone china lead-free glaze. Background technique [0002] With the improvement of human living standards, human beings pay more and more attention to the harm of lead (Pb) to human body. Therefore, in the industry of bone china for daily use, the emergence of "lead-free bone china" is urgently needed. [0003] In the existing production of bone china, the components of the glaze generally contain 15%-19% lead (Pb). It not only endangers human health, but also directly hinders the export of daily-use bone china to Europe and America. It also causes damage to the health of the operators who are engaged in bone china production, and damages the environment of the factory. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a bone china lead-free glaze, aiming at solving the above problems. [0005] In order to solve the above te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/86C03C8/02
Inventor 龚萍
Owner SHANGHAI HENGLI PORCELAIN
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