Surface processing method of aluminate blue fluorescent powder for lamp

A blue fluorescent powder and surface treatment technology, which is applied in chemical instruments and methods, luminescent materials, etc., can solve the problems of damaging the surface structure of aluminate blue powder crystals, affecting the service life of lamps, and attenuating energy-saving lighting effects. Improve surface damage, improve usability, and good dispersibility

Inactive Publication Date: 2012-02-01
CAIHONG GRP ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the surface characteristics of the powder, the treated powder will appear agglomeration and adhesion, and with the extension of the lighting time after the lamp is made, the ultraviolet excitation light source will also damage the surface structure of the aluminate blue powder crystal, resulting in the attenuation of the light efficiency of the energy-saving lamp. , which seriously affects the service life of the lamp

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for surface treatment of aluminate blue fluorescent powder for lamps, the specific implementation steps are:

[0026] (1) The washed γ-Al 2 o 3 Pass through a 350-mesh sieve to remove impurities, weigh the undersieve and put it into a ball mill bottle, add aluminate blue fluorescent powder, water and ball milling balls to ensure that the γ-Al 2 o 3 The mass ratio of powder:ball:water is 1:2:2, and the ball milling time is 48 hours. The dispersing ball here is an agate ball of Φ0.5-1.5mm; the amount of aluminate blue phosphor added is γ-Al in the ball mill bottle 2 o 3 1‰ of powder mass. γ-Al after ball milling 2 o 3 The solution is passed through a 600-mesh sieve to remove the sieve and retain γ-Al 2 o 3 solution. γ-Al 2 o 3 Adjust the mass percent concentration of the solution to 5% and stir for 12-24 hours under high-speed stirring conditions to obtain qualified γ-Al 2 o 3 Surface treatment active solution.

[0027] (2) Weigh the aluminate blue...

Embodiment 2

[0029] A method for surface treatment of aluminate blue fluorescent powder for lamps, the specific implementation steps are:

[0030] (1) The washed γ-Al 2 o 3 Pass through a 350-mesh sieve to remove impurities, weigh the undersieve and put it into a ball mill bottle, add aluminate blue fluorescent powder, water and ball milling balls to ensure that the γ-Al 2 o 3 The ratio of powder: balls: water is 1:2:2, and the ball milling time is 12 hours. The dispersing ball here is an agate ball of Φ0.5-1.5mm; the amount of aluminate blue phosphor added is γ-Al in the ball mill bottle 2 o 3 2‰ of powder mass. γ-Al after ball milling 2 o 3 The solution is passed through a 600-mesh sieve to remove the sieve and retain γ-Al 2 o 3 solution. γ-Al 2 o 3 Adjust the mass percent concentration of the solution to 20% and stir for 12-24 hours under high-speed stirring conditions to obtain qualified γ-Al 2 o 3 Surface treatment active solution.

[0031] (2) Weigh the aluminate blue ...

Embodiment 3

[0033] A method for surface treatment of aluminate blue fluorescent powder for lamps, the specific implementation steps are:

[0034] (1) The washed γ-Al 2 o 3 Pass through a 350-mesh sieve to remove impurities, weigh the undersieve and put it into a ball mill bottle, add aluminate blue fluorescent powder, water and ball milling balls to ensure that the γ-Al 2 o 3 The ratio of powder:ball:water is 1:2:2, and the ball milling time is 36 hours. The dispersing ball here is an agate ball of Φ0.5-1.5mm; the amount of aluminate blue phosphor added is γ-Al in the ball mill bottle 2 o 3 3‰ of powder mass. γ-Al after ball milling 2 o 3 The solution is passed through a 600-mesh sieve to remove the sieve and retain γ-Al 2 o 3 solution. γ-Al 2 o 3 Adjust the mass percent concentration of the solution to 10% and stir for 12-24 hours under high-speed stirring conditions to obtain qualified γ-Al 2 o 3 Surface treatment active solution.

[0035] (2) Weigh the aluminate blue fluor...

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PUM

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Abstract

The invention discloses a surface processing method of aluminate blue fluorescent powder for a lamp, which comprises the following steps of: (1) preparation and processing a surface active material, i.e. preparing gamma-Al2O3 surface processing active solution with the mass percentage of 5 to 20 percent; and (2) implementing a process of processing the surface of the aluminate blue fluorescent powder, i.e. stirring slurry of the aluminate blue fluorescent powder, adding the gamma-Al2O3 surface processing active solution prepared in the step (1), uniformly stirring the mixture, sieving the uniformly stirred slurry through 350 meshes, and carrying out dehydration, drying and sieving to obtain the aluminate blue fluorescent powder subjected to surface processing. Due to the adoption of the method disclosed by the invention, the powder dispersibility is changed, the surface electrical property of the powder is changed, and the condition of damage to the surface of the powder is improved. In the invention, a unique surface active material formula and a surface processing method are adopted; and the aluminate blue fluorescent powder for the lamp, which has excellent liquidity, coating property, dispersibility and luminescent property, is prepared by reasonably regulation.

Description

technical field [0001] The invention relates to a surface treatment method of aluminate blue fluorescent powder for lamps. Background technique [0002] At the end of the 20th century, from the perspective of energy-saving lighting, people's demand for energy-saving lamps has become more and more extensive. Energy-saving lamps made of tri-color energy-saving lamp powder are widely used. However, the shortcomings of this energy-saving lamp have gradually emerged, such as low light efficiency and large light decay. People are paying more and more attention to high-efficiency energy-saving lamp powder. The general chemical formula of barium magnesium europium aluminate blue phosphor for tricolor energy-saving lamps is BaMgAl 10 o 17 :Eu. Because the high-temperature solid-phase synthesis method has simple equipment, stable process, and good consistency of the product, it is more suitable for large-scale production. Therefore, the high-temperature solid-phase synthesis method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/02C09K11/64
Inventor 贾宏平杨欣刘君秀
Owner CAIHONG GRP ELECTRONICS CO LTD
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