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Cu-Mn-Fe-Cr cobalt-free black ceramic pigment and preparation method thereof

A technology of cu-mn-fe-cr and black ceramic pigment, which is applied in the field of ceramic color glaze, can solve the problems of unsatisfactory application requirements, poor application performance, complicated operation, etc., and is conducive to large-scale promotion and application , easy to control and realize, simple preparation process

Active Publication Date: 2013-09-04
广西恒特新材料科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the sol-gel and precipitation methods are complex in operation, long in the preparation cycle, and low in yield, making it difficult to produce in batches; the preparation process of the solid-phase sintering method is relatively simple, but due to the high reaction temperature, the prepared colorants are not only large in size, Moreover, the distribution is uneven, the color development ability is poor, and the application performance is not good, so it is difficult to meet the needs of the application and development of ceramic pigments.
Obviously, the preparation methods of ceramic pigments in the prior art can no longer meet the growing application requirements, and this problem also restricts the development of ceramic products and technologies

Method used

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  • Cu-Mn-Fe-Cr cobalt-free black ceramic pigment and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0029] The preparation method of the present embodiment Cu-Mn-Fe-Cr cobalt-free black ceramic pigment, its steps are as follows:

[0030] (1) according to the parameter in above-mentioned chemical reaction formula and table 1, take copper nitrate, manganese nitrate, ferric nitrate, chromium nitrate respectively by respective stoichiometric ratio, citric acid is weighed by 200wt% of its stoichiometric ratio, chlorine Potassium chloride according to the synthetic product (Cu 1 / 6 mn 5 / 6 ) (Fe 0.5 Cr 0.5 ) 2 o 4 Weigh 50wt% of the theoretical synthesis amount; dissolve each raw material in distilled water, and stir magnetically for 60 minutes to mix evenly, and Cu in the mixed solution 2+ +Mn 2+ The ion concentration is 0.2mol / L;

[0031] (2) Put the above mixed solution in a heat-resistant crucible, ignite and burn it in a muffle furnace at a temperature of 400 ° C, and keep it warm for 15 minutes after burning to obtain a product precursor;

[0032] (3) The precursor of ...

Embodiment 2

[0035]The preparation method of the present embodiment Cu-Mn-Fe-Cr cobalt-free black ceramic pigment, its steps are as follows:

[0036] (1) according to the parameter in above-mentioned chemical reaction formula and table 1, take copper nitrate, manganese nitrate, ferric nitrate, chromium nitrate respectively by respective stoichiometric ratio, citric acid weighs by its 150wt% by stoichiometric ratio, Potassium chloride (Cu 1 / 4 mn 3 / 4 )(Fe 0.5 Cr 0.5 ) 2 o 4 30wt% of the theoretical synthesis amount was weighed; each raw material was dissolved in distilled water, and magnetically stirred for 30 minutes to mix evenly, and Cu in the mixed solution 2+ +Mn 2+ The ion concentration is 0.3mol / L;

[0037] (2) Put the above mixed solution in a heat-resistant crucible, ignite and burn it in a muffle furnace at a temperature of 300°C, and keep it warm for 20 minutes after burning to obtain a product precursor;

[0038] (3) The precursor of the above product was calcined at a te...

Embodiment 3

[0041] The preparation method of the present embodiment Cu-Mn-Fe-Cr cobalt-free black ceramic pigment differs from Example 1 in that:

[0042] In step (1), each raw material is dissolved in distilled water, and magnetically stirred for 30 minutes to mix evenly, and Cu in the mixed solution 2+ +Mn 2+ The ion concentration is 0.5mol / L;

[0043] In step (3), the product precursor is calcined at a temperature of 1200° C., kept for 60 minutes, and cooled with the furnace to obtain the product.

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Abstract

The invention discloses a Cu-Mn-Fe-Cr cobalt-free black ceramic pigment which is expressed by a general formula (CuxMn1-x)(FeyCr1-y)2O4, wherein x and y represents mole fractions; x is 0-1; y is 0-1; and when x and y are different in value, the products are different in blackness. Besides, the invention also discloses a preparation method of the Cu-Mn-Fe-Cr cobalt-free black ceramic pigment. The ceramic pigment disclosed by the invention is small in particle size and uniform in distribution, has high and stable coloration capability, and can meet developing application requirements. Besides, the ceramic pigment is simple in preparation process and controllable in color and shape; and the whole process is easy to control and realize, and the product quality is stable, thereby being beneficial to large-scale popularization and application.

Description

technical field [0001] The invention relates to the technical field of ceramic color glazes, in particular to a Cu-Mn-Fe-Cr cobalt-free black ceramic color material and a preparation method thereof. Background technique [0002] Ceramic pigments refer to "coloring materials" used in ceramic production to decorate ceramic products. Black ceramic pigment is one of the most important decorative materials in ceramic production. It endows ceramic products with dignified, elegant and noble decorative forms and is deeply loved by people. As early as the Eastern Han Dynasty in my country, darker black glazes were fired in a reducing atmosphere to decorate porcelain. By the Eastern Jin Dynasty, black glazes with pure colors could be fired. Today, black is still used as a common and popular color for ceramics. For example, some large ceramic enterprises in Foshan, Guangdong and Dongguan are famous for producing deep and pure black antique bricks or tiles. However, in traditional bla...

Claims

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Application Information

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IPC IPC(8): C04B41/85
Inventor 李家科刘欣程凯
Owner 广西恒特新材料科技有限责任公司
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