a flower cluster lafe x eu 1-x o 3 /tio 2 Preparation method of composite superfine red ceramic pigment

A ceramic pigment and composite technology, applied in fibrous fillers, inorganic pigment treatment, chemical instruments and methods, etc., can solve problems such as energy saving and emission reduction, high calcination temperature, long grinding time, etc., and achieve bright colors and raw materials. The effect of easy availability and simple preparation method

Active Publication Date: 2020-03-31
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: the drying temperature is about 200°C, the grinding time is about 2 hours during compounding, the calcination temperature is also high, and the energy consumption is large, which is not conducive to energy saving and emission reduction

Method used

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  • a flower cluster lafe <sub>x</sub> eu <sub>1-x</sub> o <sub>3</sub> /tio <sub>2</sub> Preparation method of composite superfine red ceramic pigment
  • a flower cluster lafe <sub>x</sub> eu <sub>1-x</sub> o <sub>3</sub> /tio <sub>2</sub> Preparation method of composite superfine red ceramic pigment
  • a flower cluster lafe <sub>x</sub> eu <sub>1-x</sub> o <sub>3</sub> /tio <sub>2</sub> Preparation method of composite superfine red ceramic pigment

Examples

Experimental program
Comparison scheme
Effect test

preparation example 2

[0031] LaFe x Eu 1-x o 3 Preparation Example 2 (x=0.95, 850°C)

[0032] First, weigh 9g of glycine with a ten-thousandth balance and dissolve it in 180ml of deionized water, stir on a magnetic stirrer at a temperature of 60°C, and then add La(NO 3 ) 3 ·6H 2 O 8.66g, Fe(NO 3 ) 3 .9H 2 O 7.68g, Eu(NO 3 ) 3 .6H 2 O 0.45g, stirred for 110 minutes, then heated on the universal electric furnace, along with the growth of heating time, the liquid expanded rapidly, and released gas, generated fluffy powder, that is, the precursor, and then the prepared precursor was calcined, and the calcined temperature was 850°C, calcination time is 4h, and ground to get the matrix LaFe x Eu 1-x o 3 Pigment powder.

[0033] LaFe x Eu 1-x o 3 Preparation Example 3 (x=0.80, 900°C)

[0034] First, weigh 9g of glycine with a ten-thousandth balance and dissolve it in 200ml of deionized water, stir on a magnetic stirrer at a temperature of 70°C, and then add La(NO 3 ) 3 ·6H 2 O 8.66g, ...

preparation example 5

[0037] LaFe x Eu 1-x o 3 Preparation Example 5 (x=0.85, 750°C)

[0038] First pour 180ml of deionized water into the beaker, set the temperature on a magnetic stirrer at 60°C and stir, add 9g of glycine, 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 0, stirred for 110 minutes, then put into a universal electric furnace for heating, and self-propagating combustion occurred when the liquid evaporated quickly, and rapidly expanded to generate fluffy red powder. Then calcined at 750°C for 4 hours, and ground to obtain the matrix.

[0039] LaFe x Eu 1-x o 3 Preparation Example 6 (x=0.85, 700°C)

[0040] First pour 200ml of deionized water into the beaker, set the temperature on a magnetic stirrer at 60°C and stir, add 9g of glycine, 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 0, stirred for 110 minutes, then put into a universal electric furnace for heating,...

Embodiment 1

[0043] A flower cluster LaFe x Eu 1-x o 3 / TiO 2 The preparation method of composite superfine red ceramic pigment comprises the steps:

[0044] 1) Add 2.0g of P 123 Join in the hydrochloric acid solution of 1.6mol / L, the volume of HCl in the described hydrochloric acid solution is 133.7ml, and the volume of water is 866.3ml; The temperature of hydrochloric acid solution is 40 ℃;

[0045] 2) Stir for 2 min with a glass rod, wait until P 123 After it is completely compatible with the hydrochloric acid solution, add 4.858g of matrix LaFeO 3 The pigment powder and 4ml of butyl titanate were stirred on a magnetic stirrer for 4 hours, and the stirring temperature on the magnetic stirrer was 40°C to obtain a yellow transparent solution; if the stirring reaction time was less than 4 hours, the product could not fully react for coating, resulting in The product phase is not uniform;

[0046] 3) Cover the obtained solution with plastic wrap and let it stand for 1d, and centrifug...

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PUM

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Abstract

The invention belongs to the technical field of functional ceramic pigments, in particular to a flower cluster LaFe x Eu 1‑x o 3 / TiO 2 The preparation method of composite superfine red ceramic pigment is specifically: 1) 2.0g of P 123 Add it into 1000ml, 1.6mol / L hydrochloric acid solution; 2) Stir it properly with a glass rod, and after it is completely compatible, add a certain amount of LaFe x Eu 1‑x o 3 Stir the powder and butyl titanate on a magnetic stirrer for a certain period of time to obtain a yellow transparent solution; 3) Cover the obtained solution with a plastic wrap and let it stand for 1-2 days, and use distilled water to centrifuge the powder precipitated in the beaker at 2400r 4 times per minute; 4) drying; 5) calcining the obtained powder under certain conditions to obtain a composite ultrafine red ceramic pigment. The composite ultrafine red ceramic pigment prepared by the method of the present invention has combined LaFe x Eu 1‑x o 3 and TiO 2 It has the advantages of high near-infrared reflectivity, high chemical stability, and bright color.

Description

technical field [0001] The invention belongs to the technical field of high near-infrared reflective functional pigments, in particular to a flower cluster LaFe x Eu 1- x o 3 / TiO 2 The invention discloses a preparation method of a composite superfine red ceramic pigment. Background technique [0002] Some of the current commonly used high near-infrared reflective pigments are firstly that they contain toxic elements such as Co, Pb, Cr, etc., which endanger human health and seriously pollute the environment; secondly, most of them show light color or even white to reflect sunlight and produce "White light pollution"; in addition, their durability and stability are not very good, they are easy to fall off, and their reflectivity will be greatly reduced after a period of use. Moreover, traditional single-performance pigments can no longer meet the needs of all walks of life. The perovskite itself has a high near-infrared reflectivity. When it is replaced by other element...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/00C09C3/04C09C3/06C09C3/08
CPCC09C1/0009C09C3/006
Inventor 仝玉萍符静马娟娟刘丽张天宇李亚苹马军涛王清云王晓
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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