Spherical compound superfine red ceramic pigment and preparation method thereof

A ceramic pigment and composite technology, applied in the field of ceramic pigments, can solve the problems of high calcination temperature, high local concentration, high production cost, etc., and achieve the effect of high chemical stability, high dispersion and bright color

Active Publication Date: 2018-05-04
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages are: high production cost, the addition of precipitating agent may make the local concentration too high, resulting in agglomeration or uneven composition, high calcination temperature and long calcination time are not conducive to energy saving and emission reduction

Method used

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  • Spherical compound superfine red ceramic pigment and preparation method thereof
  • Spherical compound superfine red ceramic pigment and preparation method thereof
  • Spherical compound superfine red ceramic pigment and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 2

[0033] LaFe x Eu 1-x o 3 Preparation Example 2 (x=0.85, 750°C)

[0034] First, pour 180ml of distilled water into the beaker, stir on a magnetic stirrer with the temperature set at 60°C, add 9g of glycine, and then add 8.66g of La(NO 3 ) 3 ·6H 2 O, 6.87g of Fe(NO 3 ) 3 .9H 2 O, 1.34g of Eu(NO 3 ) 3 .6H 2 O, stirred for 110 minutes, and then put into a universal electric furnace to heat. When the liquid evaporated, it expanded rapidly and released gas, forming a fluffy red powder that is the precursor, and then calcined the prepared precursor. Then calcined at 750°C for 4 hours, and ground to obtain the matrix LaFe x Eu 1-x o 3 Pigment powder.

[0035] LaFe x Eu 1-x o 3 Preparation Example 3 (x=0.85, 700°C)

[0036] First, pour 200ml of distilled water into the beaker, stir on a magnetic stirrer with the temperature set at 60°C, add 9g of glycine, and then add 8.66g of La(NO 3 ) 3 ·6H 2 O, 6.87g of Fe(NO 3 ) 3 .9H 2 O, 1.34g of Eu(NO 3 ) 3 .6H 2 O, st...

Embodiment 1

[0041] The matrix (LaFe 0.95 Eu 0.05 o 3 Calcination temperature 750 DEG C) is used for the preparation of following embodiment 1 composite superfine red ceramic pigment:

[0042] Example 1

[0043] A preparation method of composite superfine red ceramic pigment, comprising the steps of:

[0044] 1) Add 0.1g of LaFe x Eu 1-x o 3 Joined by P 123 , absolute ethanol and deionized water in the mixed solution, in the mixed solution, P 123 The content of 0.12g, the content of absolute ethanol is 50ml, the content of deionized water is 0.4ml;

[0045] 2) Add 0.4ml of butyl titanate, and when the mixture is evenly stirred, add ammonia water drop by drop to adjust the pH to 7.0-9.0;

[0046] 3) Stir at a rate of 100r / min, stir at 50°C for 3h; let stand for 24h, then collect the product, and wash three times with water and absolute ethanol respectively;

[0047] 4) Drying at 70°C, calcining at 300°C for 30 minutes to remove the template, and grinding the product to obtain a re...

Embodiment 2

[0048] The matrix (LaFe 0.85 Eu 0.15 o 3 Calcination temperature 750 DEG C) is used for the preparation of following embodiment 2 composite superfine red ceramic pigments:

[0049] Example 2

[0050] A preparation method of composite superfine red ceramic pigment, comprising the steps of:

[0051] 1) Add 0.1g of LaFe x Eu 1-x o 3 Joined by P 123 , absolute ethanol and deionized water in the mixed solution, in the mixed solution, P 123 The content of 0.12g, the content of absolute ethanol is 50ml, the content of deionized water is 0.4ml;

[0052] 2) Add 0.4ml of butyl titanate, and when the mixture is evenly stirred, add ammonia water drop by drop to adjust the pH to 8.0;

[0053] 3) Stir at a rate of 300r / min, stir at 50°C for 3h; let stand for 24h, then collect the product, and wash three times with water and absolute ethanol respectively;

[0054] 4) drying at 70°C, calcining at 400°C for 30 minutes to remove the template, and grinding the product to obtain a red c...

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PUM

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Abstract

The invention belongs to the technical field of ceramic pigments and particularly relates to a spherical compound superfine red ceramic pigment and a preparation method thereof. The preparation methodspecifically comprises the following steps: adding a certain amount of LaFexEu(1-x)O3 into a mixed solution (including 0.12g of P123, 50ml of absolute ethanol and 0.4ml of deionized water), adding acertain amount of butyl titanate, uniformly stirring, and dropwise adding ammonia water so as to adjust pH value; stirring at a certain speed, standing for a period of time, collecting a product, respectively washing the product with water and absolute ethanol for three times; and drying, calcining to remove a template, and grinding the product, so as to obtain the red ceramic pigment. The compound superfine red ceramic pigment prepared by virtue of the preparation method is integrated with the excellent performance of LaFexEu(1-x)O3 and TiO2 and has the advantages of bright color, high near-infrared reflectivity and chemical durability and the like.

Description

technical field [0001] The invention belongs to the technical field of ceramic pigments, in particular to a composite superfine red ceramic pigment and a preparation method thereof. Background technique [0002] The wavelength of red is about 630-750nm, similar to the color of fresh blood, and it is one of the three primary colors and psychological primary colors. Traditional high-near-infrared reflective pigments firstly mostly contain toxic elements such as Pb and Cr, which endanger human health and pollute the environment; secondly, most of them show light colors that reflect sunlight and produce "light pollution"; finally, their stability and durability The durability is not very good, it is easy to fall off, and the reflectivity will be greatly reduced after a period of use. Moreover, the traditional single-performance pigments can no longer meet the needs of all walks of life. At the same time, we know that when the particle size of the material is reduced to the nan...

Claims

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Application Information

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IPC IPC(8): C09C1/00C09C3/06C09C3/08
CPCC09C1/0009C09C3/006
Inventor 仝玉萍杨大鹏符静姚贤华梅婉婉王静陈渊召张双艳鲁圣楠
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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