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Preparation method of high-temperature-resistant modified fused zirconia and praseodymium yellow pigment

A technology of fused zirconia and praseodymium yellow materials, which is applied in the field of inorganic materials, can solve the problems of easy fading, poor temperature resistance, and poor temperature resistance performance, and achieve the effects of overcoming application bottlenecks, reducing production costs, and meeting use requirements

Active Publication Date: 2016-07-13
SANXIANG ADVANCED MATERIALS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 method of high-temperature-resistant modified fused zirconia and praseodymium yellow pigment
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  • Preparation method of high-temperature-resistant modified fused zirconia and praseodymium yellow pigment

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preparation example Construction

[0023] Specifically, please refer to figure 1 As shown, the preparation method of the high temperature resistant modified fused zirconia of 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] The alkali metal and alkaline earth metal are mixed according to the weight ratio of 6~7:4~5, and then melted at high temperature, quenched in water, washed to neutrality, dried, and ground to obtain an active adhesive with a particle diameter of 1-1.5 μm , the high-temperature melting temperature is 1200-1400°C, the alkali metal is lithium, sodium or a lithium-sodium mixture, and the alkaline earth metal is beryllium, magnesium or a magnesium-calcium mixture;

[0026] Mix the zirconia powder and the active binder, the amount of the active binder is 0.05-0.3wt% of the total amount of the mixture, and then treat it at 150-300°C and 1-3MPa for 10-20h to obtain a durable High temperat...

Embodiment 1

[0042] Grinding the fused zirconia particles into zirconia powder with a particle size of 3-5 μm;

[0043] Lithium and magnesium are mixed according to the weight ratio of 3:2, 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 1200°C;

[0044] The zirconia powder and the active binder are mixed, and the amount of the active binder is 0.3wt% of the total amount of the mixture, and then treated at 150°C and 1MPa for 10h to make the zirconia powder and the active binder completely bonded together to increase the reactivity of fused zirconia to obtain modified fused zirconia;

[0045]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 150°C / h for calcination, when the calcination temperature reaches 950°C, ...

Embodiment 2

[0047] Grinding the fused zirconia particles into zirconia powder with a particle size of 3-5 μm;

[0048] 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;

[0049] 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;

[0050] 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 preparation method of high-temperature-resistant modified fused zirconia and praseodymium yellow pigment. Grain composition of fused zirconia is controlled within a reasonable range through grinding and homogenizing treatment firstly, the specific surface area of fused zirconia is increased, then a proper reactive adhesive is added to be fixedly combined with fused zirconia, the reaction activity of fused zirconia is increased, so that modified fused zirconia with the specific surface area and the reaction activity close to those of chemical zirconium is obtained, the temperature resistance of ceramic pigment prepared from high-temperature-resistant modified fused zirconia is close to that of high-temperature-resistant ceramic pigment prepared from the chemical zirconium, the ceramic pigment can completely replace the high-temperature-resistant ceramic pigment prepared from the chemical zirconium, the application bottleneck of fused zirconia in the field of high-end ceramic pigment is broken through, and the production cost of the high-temperature-resistant ceramic pigment 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 high-temperature resistant modified fused zirconia and praseodymium yellow materials. 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 affect...

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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