Low temperature ceramic blank glaze direct printing glaze ink and its application and ceramic products

Abstract

The invention discloses a low-temperature ceramic blank glaze direct printing glaze ink and its application and ceramic products. The glaze ink includes 60%-75% of inorganic ceramic pigment and 25%-40% of modified silicone grease; The inorganic ceramic pigment includes 60%-75% flux and 25%-40% colorant by weight; the raw materials of the flux include 49%-55% potassium feldspar, 20% quartz ~28%, borax pentahydrate 20%~26%, calcite 2%~8%, kaolin 1%~6%. Inorganic ceramic pigments and the modified silicone grease are evenly mixed and then rolled to make direct printing glaze ink. The glaze ink is printed on the ceramic blank or raw glaze layer by mechanical printing methods such as screen printing or pad printing machine printing. During production, the ceramic blank, glaze and glaze ink pattern are fired at one time to completely remove traditional ceramics. The volatilization of lead and cadmium in the high-temperature firing of the decal paper, and the harm to the human body caused by the lead and cadmium remaining in the ceramic after the high-temperature reaction of the ceramic decal paper, are suitable for firing in the low temperature range. The production process is simple, the color is bright, and the cost is low. , with a sense of relief and the effect of glaze color.

Description

technical field [0001] The invention relates to the technical field of daily-use ceramic decoration, in particular to a low-temperature ceramic blank glaze direct printing glaze ink and its application and ceramic products. Background technique [0002] The production of traditional daily-use ceramics needs to be fired twice or three times. Each firing lasts about 10 hours or more. The last time is to paste the ceramic flower paper on the surface of the fired porcelain after 800℃~850℃, 8 ~10 hours of grilling (or longer if the ceramic type is larger). [0003] However, there are problems in the traditional production process: 1. The lead content of ceramic pigments reaches more than 40% to 50%, so a large amount of volatilization and emission of harmful substances such as lead and cadmium are produced during the roasting process of ceramic flower paper; 2. .Secondary or multiple firing process in high temperature environment, the process is long and complicated, the manual ...

AI Technical Summary

Problems solved by technology

[0003] However, there are problems in the traditional production process: 1. The lead content of ceramic pigments reaches more than 40% to 50%, so a large amount of volatilization and emission of harmful substances such as lead and cadmium are produced during the roasting process of ceramic flower paper; 2. .Secondary or multiple firing process in high temperature environment, the process is long and complicated, the manual operation time is long, and the energy consumption is large; 3. Most of the daily-use ceramic products are decorated with floral paper, and the display effect is relatively simple, which can no longer satisfy the needs of today's people. Aesthetic awareness and perception of daily-use ceramics; 4. The production process of ceramic flower paper is complex, the working environment is harsh, and there is a large amount of volatilization of organic matter, which endangers the health of operators

[0004] Although the use of ceramic decal paper has the above-mentioned problems, there are many technical difficulties in the production process to replace ceramic decal paper (such as using glaze ink) or to change its firing process. With a thousand-year history, it is obvious that it is difficult to change its firing process, including: 1. If the firing process of ceramic flower paper is reduced once, its decorative effect can only be carried out when the ceramic is fired for the first time, but daily-use ceramics are different according to their characteristics and uses. , its firing temperature ranges from low-temperature pottery (1020°C to 1100°C) to high-temperature pottery (1200°C to 1380°C). The glaze ink made is relatively rare; 2. The thermal shock resistance of the glaze ink and the matching of the ceramic blank glaze at different firing temperatures must have good chemical reaction performance and stability; 3. How to choose one or more mixed media, Mixes with ceramic pigments and produces excellent lubricity, water repellency, uniformity

4. How to mix the selected medium with the ceramic pigment to achieve the best performance (when the medium is used too much, the printing effect such as lubrication and water blocking will be good, but the color will become lighter and worse) 5. How to make the glaze ink The flux can be suitable for different firing temperatures, the color will not become lighter, and it can maintain the vividness and gloss of the color

[0005] It can be seen that if you want to use glaze ink to replace ceramic decal paper, you need to consider the functionality of raw materials, compatibility, the use temperature of glaze ink, decorative effects, and the simplicity of the production process. When developing formulas and processes It is highly systematic and complex, and there are relatively large technical difficulties

[0006] CN101412637A discloses a water-repellent agent for decoration of ceramic products and its manufacturing method. The composition system adopts the combination of Al-Si-K-Zn elements. It claims to have a certain water-repellent effect, but there are the following problems: 1. Using ZnO As a raw material, it needs to be calcined at high temperature (about 1200°C). If it is directly added to the raw glaze without being calcined as in the patent disclosure, it will affect the technical performance of the glaze, and calcining will increase the process and energy consumption.

2. Zinc oxide has a bad effect on the color development of certain colored glazes, especially chrome glazes, Si-Al-Zn chemical composition systems are used as fluxes and various color pigments made of metal oxides such as Co-based Cr-based Fe-based (color agent) combined with various color glazes will have the problem of color change. For example, Co black will have an obvious light brown phase, and Cr-based green will have a light blue hue. The reason is that in the glass frit (Flux) is caused by the introduction of Zn, and the black colored oxide disclosed in this patent contains CrO, which causes the above-mentioned color system change problem

Therefore, the ZnO used in this patent limits the selection range of other raw materials in the colored glaze

3. According to the analysis of chemical composition, the use temperature of the water repellent should be 1150℃~1200℃, which is not suitable for low temperature firing

4. The products made of it are in liquid state, and can only be decorated by brush painting. In this process, a large amount of kerosene needs to be added as a carrier, which has a pungent smell, is volatile, flammable, pollutes the environment, and is prone to danger

It can be seen that although the use of the above products is different from that of ceramic decals, it still cannot solve the problems of cumbersome preparation process, environmental pollution, poor adaptability to use temperature, and poor compatibility between components.

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