Pollution-free low temperature bronze red pastel pigment and preparation method thereof

Abstract

The invention relates to a pollution-free low temperature bronze red pastel pigment and a preparation method thereof. The pollution-free low temperature bronze red pastel pigment consists of the following industrial raw materials in percentage by weight: 30 to 38 percent of quartz, 14 to 24 percent of feldspar, 20 to 28 percent of boric acid, 5 to 15 percent of alumina, 5 to 8 percent of lithium carbonate, 5 to 12 percent of calcium carbonate, 5 to 8 percent of magnesium oxide and 7 to 12 percent of zirconium silicate; and the preparation method comprises the following steps: melting the industrial raw materials at a temperature between 1,260 and 1,280DEG C, preserving heat for 30min, performing water quenching and ball milling, and passing through a 325-mesh sieve to prepare a pollution-free turbid solvent; and mixing the pollution-free turbid solvent with a bronze red agent in a ratio of 20:1 in percentage by weight, resintering at a temperature between 640 and 660DEG C, preserving heat for 10min, performing ball milling, passing through the 325-mesh sieve, and drying to prepare the product. The preparation method prepares the pollution-free low temperature bronze red pastel pigment of which the red value a* is more than 30 and the gloss is higher than 80, and which has pink and vivid color, good bonding with glaze, and no cracks and has the decorative effect of the traditional bronze red pastel pigment of Jingdezhen.

Description

technical field [0001] The invention belongs to the field of inorganic non-metallic materials (ceramics), and in particular relates to a pollution-free low-temperature gold-red pastel pigment and a preparation method thereof. Background technique [0002] Fencai porcelain is one of the four famous traditional porcelains in Jingdezhen. It was created on the basis of five colors in Ming and Qing Dynasties and under the influence of enamel colors. Pastels are popular all over the world for their beautiful and slender lines, moist and soft colors, rich expressive techniques and elegant artistic effects, and are highly appreciated and loved by people. Because of its unique decorative style, it was once the mainstream of my country's export of overglaze decorative porcelain for daily use. It has made great contributions to the development and brilliance of Jingdezhen's porcelain industry. [0003] However, because pastel pigments belong to low-temperature overglaze pigments, the...

AI Technical Summary

Problems solved by technology

[0005] However, with the improvement of people's living standards and the enhancement of environmental protection awareness, countries around the world have increasingly strict restrictions on the dissolution of lead and arsenic from ceramics. Production and export of decorative porcelain for daily use