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Spherical fluorescent powder of light storage ability and preparing method thereof

A technology of fluorescent powder and manufacturing method, applied in chemical instruments and methods, luminescent materials, etc., can solve the problems of wear, difficulty in use, narrow dispersive particle size distribution and classification, etc.

Inactive Publication Date: 2006-02-15
陈萍
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, what is obtained by pulverizing solid light-storing phosphors cannot be classified with good dispersion, narrow particle size distribution, and rapid classification.
[0008] In addition, when adding light-storing phosphor powder to synthetic resin for injection molding, the shape of the fine particles has a great influence on the processability of the resin, and the high-hardness light-storing phosphor powder mainly composed of alumina Particles will quickly wear out the injection molding machine of synthetic resin, making it difficult to use

Method used

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  • Spherical fluorescent powder of light storage ability and preparing method thereof
  • Spherical fluorescent powder of light storage ability and preparing method thereof
  • Spherical fluorescent powder of light storage ability and preparing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0044] As shown in Table 1, accurately weigh Al 2 o 3 , SrCO 3 , SiO 2 、NiCO 3 、Eu 2 o 3 、Dy 2 o 3 and H 3 BO 3 After fully mixing, solidify at a high temperature in an electric furnace at 1000°C or 1100°C, and pulverize the obtained sintered product into powder to obtain the precursor of the luminescent powder. Spray it into the recovery device and synthesize it instantly. The blue light-emitting aluminosilicate light-storing fluorescent powder activated by Eu and Dy with a light emission spectrum of 420-440 nm is prepared.

[0045] Al 2 o 3

Embodiment 2

[0047] Accurately weigh Al as shown in Table 2 2 o 3 , CaCO 3 , SrCO 3 , SiO 2 、NiCO 3 、Eu 2 o 3 、Dy 2 o 3 and H 3 BO 3 After fully mixing, solidify at a high temperature in an electric furnace at 1000°C or 1100°C, and pulverize the obtained sintered product into powder to obtain the precursor of the luminescent powder. Spray it into the recovery device and synthesize it instantly. A green luminous aluminosilicate light-storing fluorescent powder activated by Eu and Dy with a luminous spectrum of 500-520 nm is prepared.

[0048] Al 2 o 3

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Abstract

A light-accumulating spherical fluorescent powder is prepared from the light-accumulating fluorescent powder through high-temp heating. Its advantages are high luminous intensity, and high durability.

Description

technical field [0001] The present invention relates to spherical light-storing phosphor powder and a manufacturing method thereof. Background technique [0002] Light-storing phosphor powder is a material that accumulates light energy when it is irradiated by sunlight or other light sources, and emits light for a long time in a dark place. It can be used as a material for various purposes. [0003] The previous light-storing phosphors were almost all sulfides, for example, ZnS:Cu·Co or CaS:Co, etc. were used. Although this light-storing phosphor can store light and emit light, its disadvantage is that the light-emitting time is only 1 to 2 hours at most, its chemical properties are unstable, its durability is poor, and it is easy to age. Therefore, the luminous ability will drop sharply after dozens of hours under harsh conditions, and the disadvantage is that the service life is short. [0004] In addition, after adding radioactive substances to the sulfide phosphorescen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/80
Inventor 福井利信荣肇巳
Owner 陈萍