Preparation method of zirconium-silicate-coated cerium sulfide scarlet pigment and product prepared by same

A cerium sulfide and encapsulation technology, which is applied in the field of inorganic pigments, can solve the problems that restrict the performance improvement of cerium sulfide red pigment products and the expansion of application fields, and achieve high temperature stability and chemical stability, good dispersion, and low energy consumption. low effect

Active Publication Date: 2014-09-03
JINGDEZHEN CERAMIC INSTITUTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, γ-Ce 2 S 3 It will not decompose in alkaline solution, and Zr 4+ It is easily hydrolyzed to generate Zr(OH) under alkaline conditions 4 Precipitation is not conducive to the γ-Ce 2 S 3 form a uniform coating on the sur

Method used

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  • Preparation method of zirconium-silicate-coated cerium sulfide scarlet pigment and product prepared by same

Examples

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Comparison scheme
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Embodiment 1

[0023] The preparation method of zirconium silicate wrapped type cerium sulfide bright red material of this embodiment, its steps are as follows:

[0024] (1) Preparation of raw material solution

[0025] Cerium sulfide suspension: 0.01mol γ-Ce 2 S 3 After the color material is dispersed in 30mL deionized water, add 0.4g dispersant CTAB, and ultrasonically disperse and homogenize for 30min under magnetic stirring to obtain a suspension of cerium sulfide;

[0026] Zirconium source solution: 0.03mol ZrClO 2 ·8H 2 Dissolve O in 50 mL of deionized water and stir evenly, add 0.036 mol of citric acid and 0.018 mol of NaF with magnetic stirring to homogenize to obtain a zirconium source solution;

[0027] Silicon source solution: Mix 0.027mol TEOS with 10ml absolute ethanol to obtain a silicon source solution;

[0028] (2) adding the silicon source solution into the zirconium source solution with magnetic stirring and mixing, and after homogenization, adjust the pH value of the ...

Embodiment 2

[0032] The preparation method of zirconium silicate wrapped type cerium sulfide bright red material of this embodiment, its steps are as follows:

[0033] (1) Preparation of raw material solution

[0034] Cerium sulfide suspension: 0.0075mol γ-Ce 2 S 3 After the color material is dispersed in 20mL of deionized water, mix with a solution formed by dissolving 0.3g of dispersant sodium dodecylsulfonate (SDS) in 5ml of ethanol, and ultrasonically disperse and homogenize for 30min under magnetic stirring to obtain a cerium sulfide suspension;

[0035] Zirconium source solution: 0.0195mol ZrClO 2 ·8H 2 O was dissolved in 40mL deionized water and stirred evenly, adding 0.021mol citric acid and 0.009mol CaF 2 Magnetic stirring is used to homogenize it to obtain a zirconium source solution;

[0036] Silicon source solution: Mix 0.015mol TEOS with 10ml absolute ethanol to obtain a silicon source solution;

[0037] (2) adding the silicon source solution into the zirconium source solu...

Embodiment 3

[0041] The preparation method of zirconium silicate wrapped type cerium sulfide bright red material of this embodiment, its steps are as follows:

[0042] (1) Preparation of raw material solution

[0043] Cerium sulfide suspension: 0.008mol γ-Ce 2 S 3 After the color material is dispersed in 30mL of deionized water, add 0.60g of dispersant PVP, and ultrasonically disperse and homogenize for 30min under magnetic stirring to obtain a suspension of cerium sulfide;

[0044] Zirconium source solution: 0.034mol ZrCl 4 Dissolve in 50mL deionized water and stir evenly, add 0.041mol citric acid and 0.016mol NaF magnetically stir to homogenize to obtain zirconium source solution;

[0045] Silicon source solution: Mix 0.027mol TEOS with 10ml absolute ethanol to obtain a silicon source solution;

[0046] (2) adding the silicon source solution into the zirconium source solution and stirring and mixing, after homogenization, adjust the pH value of the mixed solution to 11 with NaOH to o...

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Abstract

The invention discloses a preparation method of a zirconium-silicate-coated cerium sulfide scarlet pigment, which comprises the following steps: introducing a cerium sulfide suspension into a zirconium source-silicon source mixed solution, and reacting the zirconium source and silicon source under hydrothermal conditions, thereby forming a precursor coating zirconium silicate on the surface of the color development body; and carrying out heat treatment on the precoated pigment in an non-oxidizing atmosphere to obtain the compact-coating high-coating-rate zirconium-silicate-coated cerium sulfide scarlet pigment. The method has the advantages of simple technique and low energy consumption; and the prepared pigment product has high stability, is applicable to the field of production of scarlet medium/low-temperature ceramics, and is suitable for industrial production.

Description

technical field [0001] The invention relates to the technical field of inorganic pigments, in particular to a preparation method of zirconium silicate-wrapped cerium sulfide scarlet pigment and a product thereof. Background technique [0002] Cerium sulfide (γ-Ce 2 S 3 ), showing bright red, because of its excellent absorption ability to ultraviolet rays, so its color rendering ability is very strong; in addition, it has the characteristics of non-toxic, strong hiding power, high melting point, etc., and has good stability in reducing atmosphere, so it is used as Inorganic pigments are widely used in plastics, coatings, inks, cosmetics and other fields. However, due to the strong affinity of Ce element for oxygen, resulting in γ-Ce 2 S 3 It will be oxidized and decomposed above 350°C; in addition, it is also very easy to decompose and release H under acidic conditions. 2 S gas, thus enhancing the γ-Ce 2 S 3 Antioxidant ability and chemical stability are of great signi...

Claims

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Application Information

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IPC IPC(8): C04B41/85
Inventor 李月明王竹梅刘顺国章彧沈宗洋谢志翔李志科
Owner JINGDEZHEN CERAMIC INSTITUTE
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