Preparation method of compound coated type cerium sulfide red pigment and product prepared through preparation method

A technology of red pigment and cerium sulfide, applied in the field of inorganic pigments, can solve the problems of affecting the stability of production and preparation, product stability, poor compactness of product coating layer, difficult reaction control, etc., so as to achieve stable and reliable preparation process and improve acid corrosion resistance. and high temperature antioxidant capacity, the effect of expanding the application field

Active Publication Date: 2017-01-04
JINGDEZHEN CERAMIC INSTITUTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current research mainly adopts the uniform precipitation method or coating treatment under hydrothermal conditions, but there are still problems in the preparation process such as difficult packaging, difficult reaction control, and poor compactness of the product coating layer, which affects the The stability and reliability of production and preparation, as well as the stability of products, have brought disadvantages to the promotion and application of industrialization

Method used

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  • Preparation method of compound coated type cerium sulfide red pigment and product prepared through preparation method
  • Preparation method of compound coated type cerium sulfide red pigment and product prepared through preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0032] The preparation method of a kind of compound package type cerium sulfide red pigment of present embodiment, its steps are as follows:

[0033] (1) Prepare a hydrolysis raw material solution

[0034] Toner suspension: 0.5g γ-Ce 2 S 3 Toner and 0.05g dispersant cetyltrimethylammonium bromide (CTAB) were added to a mixed solution of 25ml absolute ethanol and 50ml deionized water, aged for 24h under magnetic stirring, and centrifuged once to remove excess dispersion. Add the pretreated colorant to 75ml of absolute ethanol again, magnetically stir and sonicate to carry out secondary dispersion, stir and disperse evenly, add 1mol / L sodium hydroxide to adjust the pH of the solution Value is 12, and prepared toner suspension;

[0035] Zirconium source solution: use 1ml zirconium butoxide as the zirconium source solution;

[0036] Hydrolysis aid: Dissolve 0.55g of anhydrous sodium acetate in 5ml of deionized water to prepare a hydrolysis aid;

[0037] (2) Prepare a packaged...

Embodiment 2

[0048] The preparation method of a kind of compound package type cerium sulfide red pigment of present embodiment, its steps are as follows:

[0049] (1) Prepare a hydrolysis raw material solution

[0050] Toner suspension: 0.5g γ-Ce 2 S 3 Toner and 0.05g dispersant cetyltrimethylammonium bromide (CTAB) were added to a mixed solution of 25ml absolute ethanol and 50ml deionized water, aged for 24h under magnetic stirring, and centrifuged once to remove excess dispersion. Add the pretreated colorant to 75ml of absolute ethanol again, magnetically stir and sonicate to carry out secondary dispersion, stir and disperse evenly, add 1mol / L sodium hydroxide to adjust the pH of the solution The value is 12.5, and the toner suspension is obtained;

[0051] Zirconium source solution: use 1ml zirconium butoxide as the zirconium source solution;

[0052] Hydrolysis aid: prepare an acetic acid solution with a concentration of 2 mol / as a hydrolysis aid;

[0053] (2) Prepare a packaged ...

Embodiment 3

[0063] The preparation method of a kind of compound package type cerium sulfide red pigment of present embodiment, its steps are as follows:

[0064] (1) Prepare a hydrolysis raw material solution

[0065] Toner suspension: 0.3g γ-Ce 2 S 3 Toner and 0.045g dispersant cetyltrimethylammonium bromide (CTAB) were added to a mixed solution of 25ml absolute ethanol and 50ml deionized water, aged for 24h under magnetic stirring, and centrifuged once to remove excess dispersion Add the pretreated colorant to 75ml of absolute ethanol again, magnetically stir and sonicate to carry out secondary dispersion, stir and disperse evenly, add 1mol / L sodium hydroxide to adjust the pH of the solution Value is 12, and prepared toner suspension;

[0066] Zirconium source solution: use 1ml zirconium butoxide as the zirconium source solution;

[0067] Hydrolysis aid: 0.52g of ammonium acetate was dissolved in 2ml of deionized water to prepare a hydrolysis aid;

[0068] (2) Prepare a packaged pr...

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Abstract

The invention discloses a preparation method of a composite coated cerium sulfide red pigment. The preparation method comprises the steps that firstly, colorant suspension liquid containing gamma-Ce2S3 toner is hydrolyzed by a solution containing Zr<4+>, and after a hydrolysis product is dried, first-time coated precursor powder is prepared; secondly, first-time coated precursor powder suspension liquid is hydrolyzed by a solution containing Si<4+>, and after a hydrolysis product is dried, second-time coated precursor powder is prepared; finally, the second-time coated precursor powder is subjected to calcining treatment in a non-oxidation atmosphere, and then the composite coated cerium sulfide red pigment which has a zirconium oxide-silicon oxide composite coating layer and is densely coated is prepared. The invention further discloses a product prepared through the preparation method. According to the preparation method, by means of stepped hydrolysis-composite coating, reacting is easy to control, effective coating of the surface of cerium sulfide is improved, the preparation process is stable and reliable, and obtaining of the cerium sulfide red pigment with the dense and compact coating layer is promoted. The preparation technology is simple and easy to operate, and the prepared product is high in stability and suitable for industrial popularization.

Description

technical field [0001] The invention relates to the technical field of inorganic pigments, in particular to a preparation method of an encapsulated cerium sulfide red pigment and a prepared product thereof. Background technique [0002] Cerium sulfide (γ-Ce 2 S 3 ) red pigment is a non-toxic inorganic red pigment with a deep red color, high lightness value, strong tinting power, strong hiding power, and strong absorption of ultraviolet rays. Therefore, it has become a substitute pigment for toxic cadmium selenium red in recent years. Research hotspots. However, the temperature stability and chemical stability of the cerium sulfide pigment are poor, and it begins to be oxidized at 350°C and loses its color development ability, and is easily decomposed under acidic conditions to release H 2 S gas. These shortcomings of cerium sulfide pigment greatly limit its application range, especially in ceramic production, its poor color stability under high temperature conditions gre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/00C09C3/06C09C3/08
CPCC09C1/0009C09C3/006C09C3/063C09C3/08
Inventor 李月明高轶群王竹梅沈宗洋谢志翔廖润华
Owner JINGDEZHEN CERAMIC INSTITUTE
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