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Organic network preparation method of ferrozirconium red zirconia nano-composite ceramic powder

An organic network and nano-composite technology, applied in zirconia and other directions, can solve the problems of uneven mixing of solid-phase raw materials, excessive hydrolysis speed, and inability to form gels, and achieve accurate product composition control, simple production equipment, and reduced sintering. effect of temperature

Inactive Publication Date: 2015-03-25
HUBEI YIJIAOU ELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The preparation of ceramic pigments by wet chemical method has greatly improved the encapsulation rate and firing temperature of the pigments, but the production conditions are strict, such as the hydrolysis temperature is very important. If the temperature is too high, the hydrolysis speed will be too fast. Gel is formed prematurely, and precipitates or suspensions of small particles are produced, which will affect the properties of the gel. If the temperature is too low, the hydrolysis rate will be too slow, and even the gel cannot be formed.
In addition, the prepared color material is also mixed with the ceramic blank through solid-phase synthesis, and there will also be problems such as uneven mixing of solid-phase raw materials

Method used

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  • Organic network preparation method of ferrozirconium red zirconia nano-composite ceramic powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1) Preparation of organic network precursor solution: mix polyvinyl alcohol and water uniformly at a mass ratio of 3:100, heat and stir at 80°C for 3 hours, then let stand and cool to room temperature to obtain a polyvinyl alcohol aqueous solution, which is Organic network precursor solution;

[0026] 2) Zr 4+ And the preparation of colored ion / organic network gel: take 57g of the organic network precursor solution prepared above, add 30g of zirconium oxychloride and 0.18g of ferric nitrate nonahydrate in sequence and stir until completely dissolved, then add 0.68g The silica sol was stirred well, then 0.95g of glutaraldehyde was added and stirred rapidly to form Zr 4+ and colored ionic / organic network gels;

[0027] 3) Zr 4+ and coloring ion / organic network gel post-treatment: the above Zr 4+ After standing for 5 hours with the colored ion / organic network gel, place it in 25% ammonia water and soak it for 12 hours, then wash it with deionized water until neutral, t...

Embodiment 2

[0032] 1) Preparation of organic network precursor solution: mix polyvinyl alcohol and water uniformly at a mass ratio of 5:100, heat and stir at 85°C for 2.5 hours, then let stand and cool to room temperature to obtain polyvinyl alcohol aqueous solution, which is Organic network precursor solution;

[0033] 2) Zr 4+ And the preparation of colored ion / organic network gel: take 60g of the organic network precursor solution prepared above, add 30g of zirconium oxychloride and 0.25g of ferric nitrate nonahydrate in sequence and stir until completely dissolved, then add 0.94g The silica sol was stirred well, then 1g of glutaraldehyde was added and stirred rapidly to form Zr 4+ and colored ionic / organic network gels;

[0034] 3) Zr 4+ and coloring ion / organic network gel post-treatment: the above Zr 4+ After standing for 4 hours with the colored ion / organic network gel, place it in 26% ammonia water and soak it for 11 hours, then wash it with deionized water until it is neutral...

Embodiment 3

[0037] 1) Preparation of organic network precursor solution: mix polyvinyl alcohol and water uniformly at a mass ratio of 8:100, heat and stir at 90°C for 2 hours, then let stand and cool to room temperature to obtain an aqueous solution of polyvinyl alcohol, which is Organic network precursor solution;

[0038] 2) Zr 4+ And the preparation of colored ion / organic network gel: take 58g of the organic network precursor solution prepared above, add 30g of zirconium oxychloride and 0.33g of ferric nitrate nonahydrate in sequence and stir until completely dissolved, then add 0.79g The silica sol was stirred well, then 1.05 g of glutaraldehyde was added and stirred rapidly to form Zr 4+ and colored ionic / organic network gels;

[0039] 3) Zr 4+ and coloring ion / organic network gel post-treatment: the above Zr 4+ After standing for 5 hours with the colored ion / organic network gel, soak in ammonia water with a mass percentage concentration of 28% for 10 hours, then wash with deioni...

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Abstract

The invention discloses an organic network preparation method of ferrozirconium red zirconia nano-composite ceramic powder. The organic network preparation method comprises the following steps: mixing polyvinyl alcohol with water, heating, stirring, standing, and cooling to the room temperature, so as to obtain an organic network precursor solution; sequentially adding zirconium oxychloride, iron nitrate nonahydrate, silica sol and glutaraldehyde while stirring so as to generate Zr<4+> and coloration ion / organic network gel; after standing, soaking in ammonia water, washing with deionized water until the mixture is neutral, and drying and crushing to generate dry gel powder; calcining so as to obtain the ferrozirconium red zirconia nano-composite ceramic powder. According to the organic network preparation method, ceramic colorant pigments and zirconia ceramic powder are mixed at nano scale, the uniform degree of the mixture of the pigments and the ceramic raw material powder is greatly increased, the sintering temperature of composite powder is decreased, sintered red zirconia ceramic is high in strength and good in color generation, and the influences of carbon residues generated after the combustion of organic matters on the purity of the ferrozirconium red zirconia powder are reduced.

Description

technical field [0001] The invention relates to a method for preparing colored zirconia ceramic powder, in particular to a method for preparing an organic network of zirconium-iron red zirconia nanocomposite ceramic powder. Background technique [0002] With its excellent mechanical properties, such as high hardness, wear resistance, bright colors, metallic luster and no allergies to the human body, colored zirconia ceramics have gradually become a hot material for artificial gemstone decoration materials. The industrial production of colored zirconia ceramics generally uses micron or nanometer zirconia ceramic powder as the main raw material, adding high-temperature ceramic colorants and sintering aids of various colors such as zircon iron red, black cobalt black, cobalt blue, praseodymium zirconium yellow, etc. , After mixing, molding, firing and other processes, colored zirconia ceramics with different colors can be obtained. [0003] At present, Zhang Canying et al. uti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G25/02C04B35/48C04B35/626
CPCC04B35/488C04B35/624C04B35/632C04B35/63416C04B2235/3274C04B2235/5454C04B2235/6567
Inventor 谭鑫周会涛刘志明
Owner HUBEI YIJIAOU ELECTRONICS
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