Method for preparing spherical CaAl2O4:Eu,Nd luminescent powder

The invention provides a method for preparing spherical CaAl2O4:Eu,Nd luminescent powder. The method comprises the steps of: preparing an aluminum salt solution which contains Al<3+>, preparing a mixed salt solution which contains Ca<2+>, Eu<3+> and Nd<3+>, mixing an ammonium...

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Bibliographic Details
Main Authors DU SHANGUO, WANG LIJIA, YANG CONGLIN, ZHOU BO, LI GUANGZHAN, SUN XINGBO, YAO YI
Format Patent
LanguageChinese
English
Published 19.01.2018
Subjects
ADHESIVES
CHEMISTRY
DYES
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
POLISHES
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Summary:The invention provides a method for preparing spherical CaAl2O4:Eu,Nd luminescent powder. The method comprises the steps of: preparing an aluminum salt solution which contains Al<3+>, preparing a mixed salt solution which contains Ca<2+>, Eu<3+> and Nd<3+>, mixing an ammonium carbonate salt solution with the aluminum salt solution and the mixed salt solution in a state of stirring to form a reaction system, and performing a reaction at 15-65 DEG C for 10-20 hours to obtain a precipitate; washing the precipitate, drying the washed precipitate, calcining the dried precipitate in a carbon reduction atmosphere at 1250-1450 DEG C for 2-6 hours, and cooling calcined products to obtain the spherical CaAl2O4:Eu,Nd long-lasting luminescent powder. The long-lasting luminescent powder prepared by themethod has purity of 99.99% or above, spherical morphology and good dispersibility, the problems that an existing long-lasting luminescent material has poor fluidity and uneven dispersion in a mediumare solved, and the appli
Bibliography:Application Number: CN20171784956