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Preparation method of red silica-clad type cerium sulfate ceramic pigment

A technology of ceramic pigments and silica, applied in chemical instruments and methods, inorganic pigment treatment, fibrous fillers, etc., can solve the problems such as the preparation method of silica-coated cerium sulfide ceramic pigments, etc. High temperature instability, low energy consumption and high efficiency

Inactive Publication Date: 2014-07-16
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, there is no report of silica-coated cerium sulfide ceramic pigment and its preparation method

Method used

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  • Preparation method of red silica-clad type cerium sulfate ceramic pigment
  • Preparation method of red silica-clad type cerium sulfate ceramic pigment
  • Preparation method of red silica-clad type cerium sulfate ceramic pigment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Grind the cerium sulfide red ceramic pigment with an agate mortar for 4 hours, then pass through a 120-mesh sieve, take the remaining part of the pigment on the sieve and ultrasonically clean it three times with absolute ethanol and deionized water, and dry it in a drying oven at 50°C for 8 hours. Obtain pretreated cerium sulfide. Prepare 200 mL of anhydrous ethanol solution of 0.024 mol / L ethyl orthosilicate, and stir thoroughly to obtain solution A. Disperse 0.25 g of the pretreated cerium sulfide red ceramic pigment obtained in step 1 in a mixed solution of 50 mL of ammonia water and absolute ethanol, stir thoroughly for 30 minutes, add polyvinylpyrrolidone dispersant to it and fully dissolve it under stirring to obtain Solution B. Wherein the volume fraction of ammonia in the mixed solution is 0.04, and the concentration of polyvinylpyrrolidone is 2g / L. The solution B was added to the solution A under the condition of thorough stirring, and the temperature was rai...

Embodiment 2

[0030] Grind the cerium sulfide red ceramic pigment with an agate mortar for 5 hours, then pass through a 120-mesh sieve, take the remaining part of the pigment on the sieve and ultrasonically clean it with absolute ethanol and deionized water for 3 times, and dry it in a drying oven at 50°C for 8 hours. Obtain pretreated cerium sulfide. Prepare 200 mL of an anhydrous ethanol solution of 0.048 mol / L ethyl orthosilicate, and stir thoroughly to obtain solution A. Disperse 0.5 g of the pretreated cerium sulfide red ceramic pigment obtained in step 1 in a mixed solution of 50 mL of ammonia water and absolute ethanol, stir thoroughly for 30 minutes, add polyvinylpyrrolidone dispersant to it and fully dissolve it under stirring to obtain Solution B. Wherein the volume fraction of ammonia in the mixed solution is 0.08, and the concentration of polyvinylpyrrolidone is 1g / L. The solution B was added to the solution A under the condition of thorough stirring, and the temperature was r...

Embodiment 3

[0032] Grind the cerium sulfide red ceramic pigment with an agate mortar for 6 hours, then pass through a 120-mesh sieve, take the remaining part of the pigment on the sieve and ultrasonically clean it with absolute ethanol and deionized water for 3 times, and dry it in a drying oven at 50°C for 8 hours. Obtain pretreated cerium sulfide. Prepare 200 mL of anhydrous ethanol solution of 0.072 mol / L ethyl orthosilicate, and stir thoroughly to obtain solution A. Disperse 1.0 g of the pretreated cerium sulfide red ceramic pigment obtained in step 1 in a mixed solution of 50 mL of ammonia water and absolute ethanol, stir thoroughly for 30 minutes, add polyvinylpyrrolidone dispersant to it and fully dissolve it under stirring to obtain Solution B. Wherein the volume fraction of ammonia in the mixed solution is 0.12, and the concentration of polyvinylpyrrolidone is 3g / L. The solution B was added to the solution A under the condition of thorough stirring, and the temperature was rais...

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Abstract

The invention discloses a preparation method of red silica-clad type cerium sulfate ceramic pigment. The preparation method comprises the following steps: by taking cerium sulfate, tetraethylortho silicate, ammonium water, polyvinylpyrrolidone and the like as raw materials, preparing the red silica-clad type cerium sulfate ceramic pigment by adopting a liquid phase method. Due to the existence of a silica cladding layer, the high-temperature stability of the clad type cerium sulfate ceramic pigment can be enhanced, and the method has the advantages of being less in the loss of a developing body, compact in pigment cladding layer, high in cladding rate, simple and convenient in preparation processes, free from high-temperature treatment and the like.

Description

technical field [0001] The invention belongs to the technical field of ceramic pigment preparation, and relates to a preparation method of a cerium sulfide red ceramic pigment material, in particular to a preparation method of a silica-coated cerium sulfide red ceramic pigment. Background technique [0002] In the research field of decorative materials for ceramic products, red ceramic pigments play a very important role. Red ceramic pigments have been researched and applied for quite a long time, and red ceramic pigments are often used as basic decorative materials. Cerium sulfide is a non-toxic red pigment with good color rendering performance. It has the characteristics of deep red color, high lightness value, strong tinting power, strong hiding power and non-toxicity. Although the price of cerium sulfide pigments is higher than ordinary inorganic red pigments, it is far lower than high-grade organic red pigments of the same quality. Therefore, cerium sulfide pigments h...

Claims

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Application Information

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IPC IPC(8): C09C1/00C09C3/06C09C3/10
Inventor 刘辉刘婷婷吕婷陈观宏朱振峰
Owner SHAANXI UNIV OF SCI & TECH
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