High-temperature-resistant high-colorability praseodymium yellow material preparation method

A technology of praseodymium yellow material and colorability, which is applied in the field of preparation of praseodymium yellow material, can solve the problems of easy fading, poor temperature resistance, and poor temperature resistance performance, so as to overcome application bottlenecks, reduce production costs, and have good tinting strength Effect

Active Publication Date: 2016-07-20
SANXIANG ADVANCED MATERIALS
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] After research, it is found that the reason why the ceramic pigments produced by fused zirconia such as praseodymium yellow material has poor temperature resistance is that the specific surface area of ​​fused zirconia powder is small and the reactivity is small, resulting in the inability of coloring elements in the process of pigment synthesis. Completely filled into the crystal lattice, the coloring power of the ceramic pigment will be weakened, and it will be easy to fade when used at high temperature, and the temperature resistance will be deteriorated

Method used

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preparation example Construction

[0023] Specifically, please refer to figure 1 As shown, the preparation method of the modified fused zirconia in the embodiment of the present invention includes:

[0024] Grinding the fused zirconia particles into zirconia powder with a particle size of 3-5 μm;

[0025] Sodium and beryllium are mixed according to the weight ratio of 6:5, followed by high-temperature melting, rapid cooling in water, washing to neutrality, drying, and grinding to obtain an active adhesive with a particle diameter of 1-1.5 μm. The high-temperature melting temperature is 1400°C;

[0026] The zirconia powder and the active binder are mixed, and the amount of the active binder is 0.2wt% of the total amount of the mixture, and then treated at 300° C. and 3 MPa for 20 hours to obtain modified fused zirconia.

[0027] In the above examples, the specific surface area of ​​the zirconia powder can be measured by the multi-point BET method, and the particle size can be observed and controlled by a laser...

specific Embodiment

[0038] Grinding the fused zirconia particles into zirconia powder with a particle size of 3-5 μm;

[0039] Sodium and beryllium are mixed according to the weight ratio of 6:5, followed by high-temperature melting, rapid cooling in water, washing to neutrality, drying, and grinding to obtain an active adhesive with a particle diameter of 1-1.5 μm. The high-temperature melting temperature is 1400°C;

[0040] The zirconia powder and the active binder are mixed, and the amount of the active binder is 0.2wt% of the total amount of the mixture, and treated at 300°C and 3MPa for 20h, so that the zirconia powder and the active binder are completely bonded. Together, improve the reactivity of fused zirconia to obtain modified fused zirconia;

[0041] Fully mix the modified fused zirconia and other auxiliary raw materials of the praseodymium yellow material, put them in a bowl and heat them at a heating rate of 180°C / h for calcination, when the calcination temperature reaches 1050°C, k...

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Abstract

The invention relates to a high-temperature-resistant high-colorability praseodymium yellow material preparation method. By grinding and homogenizing, grain composition of electrically fused zirconia is controlled in a reasonable range to increase the specific surface area of the electrically fused zirconia; appropriate active adhesives are added and fixed to the electrically fused zirconia to improve reaction activity of the electrically fused zirconia, so that modified electrically fused zirconia approximate to chemical zirconium in specific surface area and reaction activity is obtained. Temperature resistance of ceramic pigments prepared from the high-temperature-resistant modified electrically fused zirconia is approximate to that of high-temperature-resistant ceramic pigments prepared from chemical zirconium, so that the high-temperature-resistant modified electrically fused zirconia can completely substitute for chemical zirconium in production of the high-temperature-resistant ceramic pigments. An application bottleneck of the electrically fused zirconia in the field of high-end ceramic pigments is overcome, and production cost of the high-temperature-resistant ceramic pigments is reduced.

Description

[0001] This case is a divisional application based on the invention patent with the application date of 2014-12-05, the application number 201410738251.X, and the name "a method for preparing modified fused zirconia and praseodymium yellow material" as the parent case . technical field [0002] The invention relates to the technical field of inorganic materials, in particular to a method for preparing a praseodymium yellow material with high temperature resistance and good coloring property. Background technique [0003] my country is a big country in the production of ceramics. Zirconium-based pigments occupy an important position in the commonly used pigments for glazes and blanks of ceramics, such as zirconium-based three primary color pigments zirconium vanadium blue (Zr, V)SiO 4 , Zirconium Praseodymium Yellow (Zr, Pr) SiO 4 , Zirconium iron red (Zr, Fe) SiO 4 Therefore, the quality of fused zirconia, especially the high-temperature stability of the pigment, directly ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/85
CPCC04B41/5042C04B41/85
Inventor 程诗忠包晓刚陈美育李有成李小毅陈清华
Owner SANXIANG ADVANCED MATERIALS
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