Preparation method of thermally-stable high-toughness ceramic glaze

A ceramic glaze, high toughness technology, applied in the field of preparation of thermally stable high toughness ceramic glaze, can solve the problems of insufficient toughness, poor thermal stability, etc., achieve good thermal stability, improve thermal stability, Si-O bond The effect of key energy

Inactive Publication Date: 2019-04-16
江西省千陶新型材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the defects of poor thermal stability and insufficient toughness of current ceramic glazes, the purpose of the present invention is to provide a method for preparing thermally stable and high-toughness ceramic glazes

Method used

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  • Preparation method of thermally-stable high-toughness ceramic glaze

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Effect test

Embodiment 1

[0022] Dissolve 5 parts of zirconium oxychloride in 28 parts of deionized water; add a water-soluble additive to the above-mentioned zirconium oxychloride solution; add 2 parts of ammonia water with a concentration of 25% to the zirconia solution for reaction, while controlling the reaction temperature to 40°C, after adding ammonia water dropwise, then crystallize at 40°C for 0.5hr at a constant temperature, and form zirconium hydroxide hydrogel after the reaction is completed; wash the zirconium hydroxide hydrogel with deionized water until the conductivity of the aqueous solution is 20us / cm; After pressure filtration or centrifugal separation, zirconium hydroxide gel is obtained; dry the zirconium hydroxide gel at 80°C to obtain zirconium hydroxide; calcinate the dried zirconium hydroxide at 700°C, and keep the temperature at 700°C for 1.5hr , calcined to obtain zirconium dioxide; take 5 parts of sodium silicate, 5 parts of ammonia water with a mass fraction of 20 to 25%, and...

Embodiment 2

[0024] Dissolve 4 parts of zirconium oxychloride in 21 parts of deionized water; add a water-soluble additive to the above-mentioned zirconium oxychloride solution; add 2 parts of ammonia water with a concentration of 25% to the zirconia solution for reaction, while controlling the reaction temperature to 65°C, after adding ammonia water dropwise, then crystallize at 65°C for 0.5hr at a constant temperature. After the reaction is completed, zirconium hydroxide hydrogel is formed; wash the zirconium hydroxide hydrogel with deionized water until the conductivity of the aqueous solution is 20us / cm; After pressure filtration or centrifugation, zirconium hydroxide gel is obtained; dry the zirconium hydroxide gel at 100°C to obtain zirconium hydroxide; calcinate the dried zirconium hydroxide at 700°C, and keep the temperature at 1200°C for 1.5hr , calcined to obtain zirconium dioxide; take 3 parts of sodium silicate, 4 parts of ammonia water with a mass fraction of 20 to 25%, and 17 ...

Embodiment 3

[0026]Dissolve 8 parts of zirconium oxychloride in 35 parts of deionized water; add a water-soluble additive to the above-mentioned zirconium oxychloride solution; add 2 parts of ammonia water with a concentration of 25% to the zirconia solution for reaction, and control the reaction temperature at the same time. 65°C, after adding ammonia water dropwise, then crystallize at 65°C for 0.5hr at a constant temperature. After the reaction is completed, zirconium hydroxide hydrogel is formed; wash the zirconium hydroxide hydrogel with deionized water until the conductivity of the aqueous solution is 20us / cm; After pressure filtration or centrifugation, zirconium hydroxide gel is obtained; dry the zirconium hydroxide gel at 100°C to obtain zirconium hydroxide; calcinate the dried zirconium hydroxide at 700°C, and keep the temperature at 1200°C for 1.5hr , calcined to obtain zirconium dioxide; take 8 parts of sodium silicate, 6 parts of ammonia water with a mass fraction of 20-25%, an...

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Abstract

The invention discloses a preparation method of thermally-stable high toughness ceramic glaze, and belongs to the technical field of ceramic glaze preparation. The method comprises the steps that zirconium oxychloride is dissolved in a certain proportion of deionized water, then a certain proportion of ammonia water is dropwise added into a zirconium oxychloride solution for a reaction, and meanwhile the reaction temperature is controlled; after the ammonia water is dropwise added, constant-temperature crystallization is conducted for a reaction to generate zirconium hydroxide hydrogel, and the zirconium hydroxide hydrogel is washed with deionized water, subjected to pressing filtration or centrifugation, dried and calcined to obtain stable zirconium dioxide with a certain particle size; then sodium silicate and ammonia water are dissolved in ethanol, hydrochloric acid is added dropwise, suction filtration is conducted to obtain a filter residue, and the filter residue is calcined at high temperature to obtain a calcined product; finally, the calcined product and other stone materials are mixed and crushed, and the mixture is put into a muffle furnace, melted at the high temperature, applied onto a blank and naturally cooled to prepare the thermally-stable high toughness ceramic glaze; the toughness and thermal stability of the ceramic glaze can be improved, and the ceramic glaze has broad application prospects.

Description

technical field [0001] The invention relates to the technical field of ceramic glaze preparation, in particular to a preparation method of thermally stable and high-toughness ceramic glaze. Background technique [0002] my country is a big country in ceramics, but it is also a weak country in ceramics. my country's ceramic production ranks first in the world, but the quality of ceramics produced in my country is not as good as that of Western countries. The toughness of ceramics has always been a problem that has plagued our development. Ceramics have their due hardness, but they do not have the due toughness. Therefore, the brittleness and toughening of ceramic materials have always been one of the hotspots of research, and for ceramic products, the glaze is an extremely critical part. As we all know, glazes can improve the surface properties of ceramic products. Most glazes can make the products smooth, bright, and non-absorbent, which is also beneficial to improving the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/86C03C8/00
CPCC03C8/00C04B41/5022C04B41/86C04B41/4523
Inventor 刘云飞霍培樑周方福
Owner 江西省千陶新型材料有限公司
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