Antimonate long-afterglow fluorescent powder and preparation method thereof

A long afterglow phosphor, antimonate technology, applied in chemical instruments and methods, luminescent materials, etc., can solve the problems of not rich and unstable luminescent color, and achieve the effects of good luminous intensity, easy product and high efficiency

Inactive Publication Date: 2013-11-20
ANHUI XINDE CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the long-lasting luminescent materials of the aluminate system also have obvious shortcomings, such as instability in water, not rich luminescent colors, etc.

Method used

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  • Antimonate long-afterglow fluorescent powder and preparation method thereof
  • Antimonate long-afterglow fluorescent powder and preparation method thereof
  • Antimonate long-afterglow fluorescent powder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] According to the chemical formula LiZn 2 Y 3 Sb 2 o 12 The stoichiometric ratio of each element in , respectively weighed Y 2 o 3 : 1.69356 g, Li 2 CO 3 : 0.18g, ZnO: 0.814g, Sb 2 o 3: 1.4576 g. After grinding and mixing uniformly in an agate mortar, select the air atmosphere for the first calcination, the temperature is 700°C, and the calcination time is 7 hours, then cooled to room temperature, and the sample is taken out. After the first calcined raw materials, the mixture was ground and mixed evenly, and then calcined for the second time under air atmosphere, the calcining temperature was 820°C, and the calcining time was 8 hours, then cooled to room temperature, and the samples were taken out. After the raw material is calcined for the second time, the mixture is ground and mixed evenly, and calcined for the third time under air atmosphere, the calcining temperature is 950°C, the calcining time is 8 hours, and the target product is obtained after cooling t...

Embodiment 2

[0034] According to the chemical formula LiZn 2 Y 2.7 Eu 0.3 Sb 2 o 12 The stoichiometric ratio of each element in the yttrium nitrate Y (NO 3 ) 3 ·6H 2 O: 5.17 g, europium nitrate Eu (NO 3 ) 3 ·6H 2 O:0.669g, LiNO 3 : 0.3448 grams, Zn(NO 3 ) 2 ·6H 2 O: 2.975 g, Sb(CH 3 COO) 3 : 2.989 g. After grinding and mixing uniformly in an agate mortar, select the air atmosphere for the first calcination, the temperature is 700°C, and the calcination time is 7 hours, then cooled to room temperature, and the sample is taken out. After the first calcined raw materials, the mixture was ground and mixed evenly, and then calcined for the second time under air atmosphere, the calcining temperature was 820°C, and the calcining time was 8 hours, then cooled to room temperature, and the samples were taken out. After the raw material is calcined for the second time, the mixture is ground and mixed evenly, and calcined for the third time under air atmosphere, the calcining temperatu...

Embodiment 3

[0040] According to the chemical formula LiZn 2 Y 1.5 Ce 1.5 Sb 2 o 12 The stoichiometric ratio of each element in , respectively weighed Y 2 (C 2 o 4 ) 3 10H 2 O: 1.657 g, CeO 2 : 1.29g, LiOH: 0.2g, ZnC 2 o 4 2H 2 O: 1.8942 g, Sb 2 o 3 : 1.4576 g. After grinding and mixing uniformly in an agate mortar, select the air atmosphere for the first calcination, the temperature is 700°C, and the calcination time is 7 hours, then cooled to room temperature, and the sample is taken out. After the first calcined raw materials, the mixture was ground and mixed evenly, and then calcined for the second time under air atmosphere, the calcining temperature was 820°C, and the calcining time was 8 hours, then cooled to room temperature, and the samples were taken out. After the raw material is calcined for the second time, the mixture is ground and mixed evenly, and calcined for the third time under air atmosphere, the calcining temperature is 950°C, the calcining time is 8 hour...

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Abstract

The invention relates to antimonate long-afterglow fluorescent powder and a preparation method thereof. The chemical formula of fluorescent powder is LiZn2Y3-3xRE3xSb2O12, wherein RE is rare earth ions, namely La<3+>, Ce<3+>, Pr<3+>, Nd<3+>, Sm<3+>, Eu<3+>, Gd<3+>, Tb<3+>, Dy<3+>, Ho<3+>, Er<3+>, Tm<3+>, Yb<3+>, Lu<3+> and Sc<3+>, x is the mole percentage of RE doping substituted Y<3+>, and x is more than or equal to 0 and less than or equal to 0.5. The antimonate long-afterglow fluorescent powder provided by the invention emits bright orange light after the ultraviolet light excitation of 200-350 nanometers is stopped and has the advantages of high luminous intensity, good stability and color development and good chemical stability and heat stability. The preparation method provided by the invention has the advantages of simplicity, high operability, unnecessary calcining in a reduced atmosphere, no waste water discharge and waste gas emission, environment friendliness, good repeatability, stability in product quality, easiness for operation and industrialized production.

Description

technical field [0001] The invention belongs to the technical field of luminescent materials, and relates to a long afterglow luminescent material, in particular to an orange long afterglow luminescent material which emits a persistent and visible orange afterglow after being excited by ultraviolet light or visible light, and a preparation method thereof. Background technique [0002] Long afterglow luminescent materials are also called light storage materials or luminous materials, which refer to the light that stores a part of light energy under the irradiation of natural light or other artificial light sources, and can still slowly release this energy in the form of visible light when the light source is removed. Luminescent materials. Long afterglow luminescent materials have now been widely used in emergency indication equipment, low-light lighting, handicrafts, decorative materials and luminous coatings and other fields. The traditional long afterglow materials are ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/75C09K11/78
Inventor 黄彦林祁淑云蔡培庆
Owner ANHUI XINDE CHEM FIBER
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