Rare earth long-afterglow light emitting powder, preparation method thereof, waterborne energy storage type rare earth long-afterglow light emitting coating and preparation method thereof

A long afterglow luminescent powder and long afterglow luminescence technology, which is applied in luminescent coatings, luminescent materials, chemical instruments and methods, etc., can solve the problems of poor water resistance and short afterglow time, and achieve the effect of improving afterglow life and excellent fluorescence performance

Inactive Publication Date: 2018-11-23
HUNAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

SrMoO prepared by this method 4 : Eu 3+ It emits red light under the excitation of ultraviolet light, and the product has good luminous performance. It can be used in energy-saving fluorescent lamps, luminescent coatings and other fields, but there are still problems such as short afterglow time and poor water resistance.

Method used

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  • Rare earth long-afterglow light emitting powder, preparation method thereof, waterborne energy storage type rare earth long-afterglow light emitting coating and preparation method thereof
  • Rare earth long-afterglow light emitting powder, preparation method thereof, waterborne energy storage type rare earth long-afterglow light emitting coating and preparation method thereof
  • Rare earth long-afterglow light emitting powder, preparation method thereof, waterborne energy storage type rare earth long-afterglow light emitting coating and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0069] The rare earth long afterglow luminous powder of this embodiment has a molecular formula of SrMoO 4 :Eu 0.02 : Dy 0.03 , the particle size is 100-200nm.

[0070] The preparation method of the rare earth long-lasting luminescent powder of this embodiment includes the following steps:

[0071] 1) Weigh 0.1mol Eu 2 o 3 and 0.1mol Dy 2 o 3 , were dissolved in excess concentrated nitric acid, respectively, diluted with deionized water to a concentration of 0.1mol / L Eu(NO 3 ) 3 solution and 0.1mol / L Dy(NO 3 ) 3 solution, spare;

[0072] 2) According to the stoichiometric ratio of SrMoO 4 :Eu 0.02 : Dy 0.03 , followed by adding 2mol / L of Sr(NO 3 ) 2 Solution 5mL and Eu(NO 3 ) 3 Solution 2ml, Dy(NO 3 ) 3 Solution 3mL, stirred at constant temperature for 0.5h until uniform, to obtain a mixed solution; 25ml concentration of 2mol / L (NH 4 ) 6 Mo 7 o 24 4H 2 O aqueous solution was slowly added dropwise to the above mixed solution with a burette until the mixe...

Embodiment 2

[0079] The difference between this embodiment and Embodiment 1 is that the Dy element in Embodiment 1 is replaced by Nd.

Embodiment 3

[0081] The rare earth long afterglow luminous powder of this embodiment has a molecular formula of SrMoO 4 :Eu 0.02 :Nd 0.03 , the particle size is 100-200nm.

[0082] The preparation method of the rare earth long-lasting luminescent powder of this embodiment includes the following steps:

[0083] 1) Weigh 0.1mol Eu 2 o 3 and 0.1mol Nd 2 o3 , were dissolved in excess concentrated nitric acid, respectively, diluted with deionized water to a concentration of 0.1mol / L Eu(NO 3 ) 3 solution and 0.1mol / L Nd(NO 3 ) 3 solution, spare;

[0084] 2) According to the stoichiometric ratio of SrMoO 4 :Eu 0.02 :Nd 0.03 , followed by adding 2mol / L of Sr(NO 3 ) 2 Solution 4mL and Eu(NO 3 ) 3 Solution 2mL, Nd(NO 3 ) 3 Solution 3mL, stirred at constant temperature for 0.5h until uniform, to obtain a mixed solution; 2mol / L (NH 4 ) 6 Mo 7 o 24 4H 2 28ml of O aqueous solution was slowly added dropwise to the above mixed solution with a burette until the mixed solution appeare...

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Abstract

The invention relates to rare earth long-afterglow light emitting powder, a preparation method thereof, waterborne energy storage type rare earth long-afterglow light emitting coating and a preparation method thereof, and belongs to the technical field of rare earth light emitting materials. The molecular formula of the rare earth light emitting powder is SrMoO4:Eu0.02:R0.03, wherein R is Dy or Nd. The rare earth light emitting powder is synthesized with a coprecipitation-hydrothermal method and has the advantages of simple technology and low price, reactant can be evenly mixed on an atom (ormolecule) level, and the obtained product particle has the advantages of small grain size and evenly distributed size, stable performance at high temperature. The waterborne energy storage type rare earth long-afterglow light emitting coating is obtained by carrying out hydrophobic modification on the above rare earth light emitting powder, the light emitting powder is stable in medium and long terms (three months or more) in the waterborne coating, and the light emitting time of the light emitting powder is as long as 12 h. The waterborne rare earth long-afterglow light emitting coating has the advantages of long light emitting time, high luminance and stable performance.

Description

technical field [0001] The invention relates to a rare earth long afterglow luminous powder and a preparation method thereof, a water-based energy storage type rare earth long afterglow luminescent coating and a preparation method thereof, and belongs to the technical field of rare earth luminescent materials. Background technique [0002] Coating is an indispensable material in various fields of national economy such as industry, agriculture, transportation, railway and national defense. It is closely related to the improvement of people's living standards, the development of national high technology and the enhancement of national defense. Water-based energy-storage rare earth long-lasting luminescent paint is a kind of high-efficiency, energy-saving "green" environmental protection paint added with rare earth long-lasting luminescent materials. This kind of energy-storage self-luminous coating will automatically emit light instantly when an accident occurs or an emergency...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/68C09D5/22
CPCC09D5/22C09K11/7794
Inventor 郭栋才杜红丽胡小武
Owner HUNAN UNIV
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