Decorative color microcrystalline glass formula and its production process

Abstract

The present invention discloses the material formulation and production process of decorating color microcrystalline glass. The glass consists of: SiO2 55-62 wt%, Al2O3 5-9 wt%, CaO 12-20 wt%, MgO 0-4 wt%, R2O 3-8 wt%, BaO 1-5 wt%, ZnO 3-9 wt%, B2O3 0-2 wt%, Sb2O3 0-4 wt%, Li2O 0-4 wt% and coloring agent in proper amount, with R2O being Na2O or K2O. The present invention solves the problem of matching the base components and coloring agents to make the production process of the color microcrystalline glass stable and reliable. The present invention has relatively low continuous coloring temperature, and makes it possible to produce color microcrystalline glass in different colors through simple process and in low power consumption, high yield and low cost.

Description

(1) Technical field: [0001] The invention relates to the technical field of glass-ceramics, in particular to a formula and a production process of colored glass-ceramics for decoration. (two) background technology: [0002] At present, there are many basic formulas for the production of glass-ceramics by sintering, but there are only a few coloring methods: (1) The primary coloring process is to mix the colorant and basic glass batch materials evenly, directly melt them into glass liquid, and water quench Colored glass pellets are then sintered and crystallized to produce glass-ceramics. The color tone is difficult to stabilize, and the cycle of changing varieties is long, and the color products are relatively simple; (2) The secondary coloring process is to add colorless glass pellets to inorganic high temperature. Pigments and additives are ball milled into color glaze slurry, dried and crushed into toner powder. The preparation quality of toner powder in this process requ...

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Problems solved by technology

[0002] At present, there are many basic formulas for the production of glass-ceramics by sintering, but there are only a few coloring methods: (1) The primary coloring process is to mix the colorant and basic glass batch materials evenly, directly melt them into glass liquid, and water quench Colored glass pellets are then sintered and crystallized to produce glass-ceramics. The color tone is difficult to stabilize, and the cycle of changing varieties is long, and the color products are relatively simple; (2) The secondary coloring process is to add colorless glass pellets to inorganic high temperature. Pigments and additives are ball milled into color glaze slurry, dried and crushed into toner powder. The preparation quality of toner powder in this process requires high quality, otherwise it will affect the color of glass ceramics, such as uneven coloring and easy to produce color spots. This method prepares color The efficiency of the powder is low, and it is difficult to meet the needs of mass production; (3) the coloring method announced by the Chinese patent CN1446766A is to add one or more inorganic high-temperature pigments to the colorless glass granules, and carry out secondary melting after crushing and mixing , water quenching to obtain color glass pellets, the color material prepared by this method is stable in color, uniform in color and rich in color, but the quality requirements for inorganic high-temperature pigments are relatively high, the preparation process is many, impurities are easily introduced, and secondary high temperature is required Melting directly increases the cost

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