A kind of red long afterglow material and preparation method thereof

A long afterglow material, red technology, applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems of long afterglow time, inconsistent energy consumption, etc., and achieve the effect of long afterglow time, uniform distribution and high purity

Inactive Publication Date: 2017-10-31
四川程德新材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a kind of red long afterglow material M 0.8 Zn 0.2 TiO 3 : RE, X and its preparation method, the method adopts high gravity reaction mixing technology batching, continuous solvothermal reaction crystallization and high temperature inert atmosphere pyrolysis to prepare red long afterglow material M 0.8 Zn 0.2 TiO 3 :RE, X, the red rare earth long-lasting luminescent material has small particle size, uniform particle size distribution, high purity, long afterglow time, and low cost, which solves the problem of product purity, particle size, and morphology of traditional solid-state sintering methods. Inconsistencies and high energy consumption

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  • A kind of red long afterglow material and preparation method thereof
  • A kind of red long afterglow material and preparation method thereof

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Embodiment 1

[0032] (1) Measure Ca salt solution, Zn salt solution, or Eu according to the stoichiometric ratio of the above chemical formula 3+ salt solution, Al 3+ The salt solution of butyl titanate and the acid solution of butyl titanate are added into the container to form a mixed solution, then the dispersant is added and mixed evenly under the condition of supergravity, the solid and liquid are separated, the solid phase is washed with water, and the washed solid phase is mixed with The organic solvent is mixed evenly to obtain the feed liquid;

[0033] (2) Input the feed liquid obtained in step (1) into the reaction kettle, raise the temperature of the feed liquid to 160~300°C under stirring and keep it at this temperature for 0.5~6h, and then continuously feed and discharge under stirring The crystallization reaction is carried out in the circulation mode to obtain the precursor slurry, the temperature of the crystallization reaction is controlled to be 160~300°C, the residence t...

Embodiment 2

[0036] In this embodiment, the chemical formula of the red long afterglow material is Ca 0.8 Zn 0.2 TiO 3 :Pr 3+ ,Al 3+ ,Mg 2+ , where, Pr 3+ The content is matrix Ca 0.8 Zn 0.2 TiO 3 0.1wt% of Al 3+ and Mg 2+ matrix Ca 0.8 Zn 0.2 TiO 3 0.15wt% and 0.1wt%, its preparation method is as follows:

[0037] (1) Dissolve calcium nitrate in deionized water to prepare 0.2mol / L calcium nitrate aqueous solution; dissolve zinc nitrate in deionized water to prepare 0.5mol / L zinc nitrate aqueous solution; dissolve praseodymium nitrate in deionized water to prepare into 1.0mol / L praseodymium nitrate aqueous solution; dissolving aluminum nitrate in deionized water to prepare 1.0mol / L aluminum nitrate aqueous solution; dissolving magnesium nitrate in deionized water to prepare 1.0mol / L magnesium nitrate aqueous solution; Sodium oxide was dissolved in deionized water to prepare a 200g / L aqueous sodium hydroxide solution. Add butyl titanate to citric acid solution to form an acid...

Embodiment 3

[0043] In this embodiment, the chemical formula of the red long afterglow material is Ca 0.8 Zn 0.2 TiO 3 :Pr 3+ ,Al 3+ ,Mg 2+ , where, Pr 3+ The content is matrix Ca 0.8 Zn 0.2 TiO 3 0.3wt% of Al 3+ and Mg 2+ matrix Ca 0.8 Zn 0.2 TiO 3 1wt% and 0.15wt%, its preparation method is as follows:

[0044] (1) Dissolve calcium nitrate in deionized water to prepare 0.5mol / L calcium nitrate aqueous solution; dissolve zinc nitrate in deionized water to prepare 1.5mol / L zinc nitrate aqueous solution; dissolve praseodymium nitrate in deionized water to prepare into 1.5mol / L praseodymium nitrate aqueous solution; dissolving aluminum nitrate in deionized water to prepare 1.5mol / L aluminum nitrate aqueous solution; dissolving magnesium nitrate in deionized water to prepare 1.0mol / L magnesium nitrate aqueous solution; hydrogen Potassium oxide was dissolved in deionized water to prepare a 100g / L aqueous sodium hydroxide solution. Add butyl titanate to glacial acetic acid soluti...

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Abstract

The invention discloses a red long-afterglow phosphor and a preparation method. The chemical formula of the red long-afterglow phosphor is M0.8Zn0.2TiO3: RE, X, wherein in the formula, M0.8Zn0.2TiO3 is a substrate, M is one of Ca, Sr, Mg and Ba, RE and X are doping components, RE is Pr<3+> or Eu<3+>, X is any one of Al<3+>, Mg<2+> and Mn<3+>, the content of the doping component RE is 0.1-0.3wt% of that of the substrate, and the content of the doping component X is 0.1-1wt% of that of the substrate. The preparation method comprises the steps of ingredient preparation, crystallization and thermal cracking. The prepared red long-afterglow phosphor is small in particle size, uniform in particle size distribution, high in purity, long in afterglow time and low in cost, and overcomes the defects that products prepared through a traditional solid-phase sintering method are not uniform in purity, granularity, morphology and the like and high in energy consumption.

Description

technical field [0001] The present invention relates to the invention belongs to the field of long afterglow luminescent materials, and relates to a red long afterglow material M 0.8 Zn 0.2 TiO 3 :RE,X and its continuous thermal solvent preparation method. Background technique [0002] Since Matsuzawa reported the ultra-long green long afterglow material Sr 2 Al 2 o 4 :Eu 2+ , Dy 3+ Since the excellent performance of rare earth ion doped long afterglow materials, the superior performance of long afterglow materials has greatly promoted the development of long afterglow luminescent materials. The special electron layer structure of rare earth ions can absorb or emit electromagnetic radiation of various wavelengths from ultraviolet light, visible light to infrared light region, and has excellent energy conversion function. Red, green and blue long-lasting phosphors are blended in a certain proportion to obtain long-lasting materials of any color. The green long-lasting...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/67
CPCC09K11/77C09K11/7728
Inventor 徐程浩杨德建杨军白涛
Owner 四川程德新材料有限公司
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