Two-step method for preparing high-temperature red ceramic color with nuclear shell structure

A technology of core-shell structure and ceramic pigments, which is applied in the field of two-step preparation of high-temperature red ceramic pigments with core-shell structure, which can solve the problems of unsatisfactory color rendering and ceramic pigments being easily eroded by glass melt.

Inactive Publication Date: 2009-06-03
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at high temperature, Ce 1-x PR x o 2 Ceramic pigments are easily eroded by glass melt, resulting in unsatisfactory coloration, which hinders Ce 1-x PR x o 2 Bottlenecks in the development of ceramic pigments

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Weigh Ce(NO 3 ) 3 ·6H 2 O and Pr(NO 3 ) 3 ·6H 2 O is mixed to obtain the oxidant, and the combustion agent C 6 h 8 o 7 Add the oxidant, the molar ratio of the oxidant to the combustion agent is 2:1, use absolute ethanol as a dispersant, and grind the above mixture into a paste. Put the mixture into a container and then put it into an electric furnace, and rapidly raise the temperature to the ignition temperature (300°C) of the reactant to cause a low-temperature combustion reaction. After the reaction is complete, Ce can be obtained. 1-x PR x o 2 Pigment powder. Take Triton X-100 and C respectively according to the mass ratio of 2:1:5:2 5 h 12 O, C 6 h 12 and H 2 O, mix evenly to prepare a microemulsion system, determine the maximum amount of solubilized water according to the electrical conductivity of the microemulsion system, and determine the addition of NH according to the maximum amount of solubilized water 3 ·H 2 The amount of O, the prepared Ce ...

Embodiment 2

[0022] Weigh Ce(NO 3 ) 3 ·6H 2 O, Pr(NO 3 ) 3 ·6H 2 O is mixed to obtain the oxidant, and the combustion agent C 6 h 8 o 7 Add the oxidant, the molar ratio of the oxidant to the combustion agent is 1:1, use absolute ethanol as a dispersant, and grind the above mixture into a paste. Put the mixture into a container and put it into an electric furnace, and rapidly raise the temperature to the ignition temperature (300°C) of the reactant to cause a low-temperature combustion reaction, and the Ce to be synthesized can be obtained after the reaction is complete. 1-x PR x o 2 Pigment powder. Take Triton X-100 and C respectively according to mass ratio 2.5:1.5:6:2.5 5 h 12 O, C 6 h 12 and H 2 O, mix evenly to prepare a microemulsion system, determine the maximum amount of solubilized water according to the electrical conductivity of the microemulsion system, and determine the addition of NH according to the maximum amount of solubilized water 3 ·H 2 The amount of O, ...

Embodiment 3

[0024] Weigh Ce(NO 3 ) 3 ·6H 2 O, Pr(NO 3 ) 3 ·6H 2 O is mixed to obtain the oxidant, and the combustion agent C 6 h 8 o 7 Add the oxidant, the molar ratio of the oxidant to the combustion agent is 3:1, use absolute ethanol as a dispersant, and grind the above mixture into a paste. Put the mixture into a container and put it into an electric furnace, and rapidly raise the temperature to the ignition temperature (300°C) of the reactant to cause a low-temperature combustion reaction, and the Ce to be synthesized can be obtained after the reaction is complete. 1-x PR x o 2 Pigment powder. Take Triton X-100 and C respectively according to the mass ratio of 3:2:7:3 5 h 12 O, C 6 h 12 and H 2 O, mix evenly to prepare a microemulsion system, determine the maximum amount of solubilized water according to the electrical conductivity of the microemulsion system, and determine the addition of NH according to the maximum amount of solubilized water 3 ·H 2 The amount of O,...

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PUM

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Abstract

The invention discloses a two-step method for preparing high-temperature red ceramic color with a nuclear shell structure. A SiO2 coating layer is coated on a Ce1-xPrxO2 chromogenic unit. The method comprises the following steps: preparing Ce1-xPrxO2 color powder by the conventional method; evenly mixing and stirring TritonX-100, C5H12O, C6H12, and H2O by the mass ratio: (2-3): (1-2):(5-7):(2-3) to obtain a microemulsion system; scattering Ce1-xPrxO2 color powder to the microemulsion system, adding TEOS ethyl orthosilicate, further adding NH3.H2O when stirring, controlling the pH value to be 8 to 10, and generating silica sol solution after the TEOS is completely hydrolyzed; and extracting and filtering silica sol solution, cleaning the filter residue, drying, calcining, grinding, and obtaining Ce1-x PrxO2 or SiO2 high-temperature red ceramic color with the nuclear shell structure. The two-step method for preparing high-temperature red ceramic color with the nuclear shell structure provided by the invention can improve the high-temperature anti-glass melt erosiveness of the red ceramic color.

Description

technical field [0001] The invention belongs to the technical field of pigment preparation, and relates to a method for improving the high-temperature glass melt erosion resistance of pigments, in particular to a two-step method for preparing high-temperature red ceramic pigments with a core-shell structure. Background technique [0002] As a basic decorative material, red ceramic pigment plays a very important role in the decoration of ceramic products, and its research and application has a history of thousands of years. It is usually divided into ordinary red pigments, sulfide red pigments, encapsulated red pigments, and new red pigments. Most of the traditional red pigments have unsatisfactory color rendering properties at high temperatures, and are currently used in red pigments in ceramics, such as: zirconium iron red and cadmium selenium red. Zirconium iron red is not bright enough in high temperature. Cadmium selenium red is a kind of toxic pigment, if the temperat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/85
Inventor 李军奇朱振峰马建中刘辉何选盟钱强文
Owner SHAANXI UNIV OF SCI & TECH
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