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Preparation method of novel rare earth red pigment gamma-Ce2S3

A red pigment, -ce2s3 technology, is applied in the field of preparation of new rare earth red pigment γ-Ce2S3, can solve the problems of tinting strength, gloss, purity and color strength to be improved, achieves simple and reliable preparation method, stable experimental results, The effect of enhanced adhesion

Active Publication Date: 2020-08-04
甘肃翔达新颜料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The current final product γ-Ce 2 S 3 Choose a variety of commercially available or self-made CeO 2 Precursor, made by calcination process, its tinting strength, gloss, purity and color strength need to be improved

Method used

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  • Preparation method of novel rare earth red pigment gamma-Ce2S3
  • Preparation method of novel rare earth red pigment gamma-Ce2S3
  • Preparation method of novel rare earth red pigment gamma-Ce2S3

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A kind of preparation method of novel rare earth red pigment γ-Ce2S3, including modified CeO2 Preparation of Composite Nano Precursor Powder and Red Pigment γ-Ce 2 S 3 calcination molding process;

[0043] The modified CeO 2 The preparation of composite nanometer precursor powder comprises the following steps:

[0044] a. Preparation of CeCl 3 solution and Na 2 S solution

[0045] Weigh 45gCeCl 3 , 90gNa 2 S·9H 2 O, 225ml (about 225g) of the first deionized water and 360ml (about 360g) of the second deionized water, and CeCl 3 、Na 2 S·9H 2 O was sequentially dissolved in the first deionized water and the second deionized water to obtain CeCl 3 solution and Na 2 S solution;

[0046] b. Preparation of CeO 2 Precursor sample

[0047] At room temperature, the above CeCl 3 The solution is added dropwise to Na at a rate of 0.5d / s 2 In the S solution, continue magnetic stirring until the precipitation reaction is complete. In the early stage of the reaction, a...

Embodiment 2

[0060] The modified CeO 2 The preparation of composite nanometer precursor powder comprises the following steps:

[0061] a. Preparation of CeCl 3 solution and Na 2 S solution

[0062] Weigh 50gCeCl 3 , 110gNa 2 S·9H 2 0. 300ml (about 300g) of the first deionized water and 500ml (about 500g) of the second deionized water, and CeCl 3 、Na 2 S·9H 2 O was sequentially dissolved in the first deionized water and the second deionized water to obtain CeCl 3 solution and Na 2 S solution;

[0063] b. Preparation of CeO 2 Precursor sample

[0064] At room temperature, the above CeCl 3 The solution is added dropwise to Na at a rate of 1d / s 2 In the S solution, continue magnetic stirring until the precipitation reaction is complete. In the early stage of the reaction, a white flocculent precipitate is rapidly produced, accompanied by the smell of rotten eggs (need to be connected to an exhaust gas absorption device). After filtering, washing and drying at room temperature for...

Embodiment 3

[0075] The modified CeO 2 The preparation of composite nanometer precursor powder comprises the following steps:

[0076] a. Preparation of CeCl 3 solution and Na 2 S solution

[0077] Weigh 50gCeCl 3 , 125gNa 2 S·9H 2 O, 350ml (about 350g) of the first deionized water and 600ml (about 600g) of the second deionized water, and CeCl 3 、Na 2 S·9H 2 O was sequentially dissolved in the first deionized water and the second deionized water to obtain CeCl 3 solution and Na 2 S solution;

[0078] b. Preparation of CeO 2 Precursor sample

[0079] At room temperature, the above CeCl 3 The solution is added dropwise to Na at a rate of 1.5d / s 2 In the S solution, continue magnetic stirring until the precipitation reaction is complete. In the early stage of the reaction, a white flocculent precipitate is rapidly produced, accompanied by the smell of rotten eggs (need to be connected to an exhaust gas absorption device). After filtering, washing and drying at room temperature f...

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Abstract

The invention discloses a preparation method of a novel rare earth red pigment gamma-Ce2S3. The preparation method comprises the following steps: preparing modified CeO2 composite nano precursor powder and calcining and molding the red pigment gamma-Ce2S3. The preparation method of the modified CeO2 composite nano precursor powder comprises the following steps: preparing a CeCl3 solution and a Na2S solution, preparing a CeO2 precursor sample, preparing a CeO2 nano powder precursor and molding the modified CeO2 composite nano powder precursor. The calcining and forming process of the red pigment gamma-Ce2S3 comprises the following steps: calcining the modified composite nano-powder precursor and forming the red pigment gamma-Ce2S3. The red pigment gamma-Ce2S3 prepared by the preparation method disclosed by the invention has the advantages that the tinting strength, glossiness, purity and color intensity are obviously improved, meanwhile, the adhesive force is also obviously enhanced, the experiment result is stable through repeated experiments, and the preparation method is simple and reliable.

Description

technical field [0001] The invention relates to the technical field of inorganic pigments, in particular to a preparation method of a novel rare earth red pigment γ-Ce2S3. Background technique [0002] Under normal circumstances, red pigments are divided into two categories: organic red pigments (abbreviated as organic red) and inorganic red pigments (abbreviated as inorganic red). Compared with inorganic red pigments, organic red generally has the advantages of strong tinting power and bright color, but also There are shortcomings such as thermal stability, hiding power, light stability and poor ability to resist ultraviolet radiation. Therefore, due to their own advantages and disadvantages, it is difficult for organic red to completely replace inorganic red. The industry still uses inorganic red pigments in large quantities. Most of the currently used inorganic red pigments contain heavy metal elements such as cadmium, chromium, lead and mercury that directly endanger hu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F17/288C01F17/10
CPCC01F17/288C01F17/10C01P2002/72
Inventor 王俊
Owner 甘肃翔达新颜料科技股份有限公司
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