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Green phosphor for LED lamps and preparation method thereof

A technology of green fluorescent powder and LED lamps, applied in chemical instruments and methods, luminescent materials, electrical components, etc., can solve problems such as economic constraints, increased application costs, and short duration of fluorescent materials, and achieve high luminous intensity and stability Good, the product is non-toxic and harmless

Inactive Publication Date: 2016-02-24
陈桂兴
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, the fluorescent materials of the above patents have a short duration, so they cannot be used for a long time, which will inevitably lead to an increase in application costs. Therefore, their popularization and use are restricted by economic aspects.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A kind of green phosphor for LED lamp, the weight parts of each component are:

[0025] 50 parts of terbium-activated aluminate, 5 parts of nano alumina, 3 parts of calcium orthophosphate, 3 parts of binder, 1 part of talcum powder, 1 part of antioxidant.

[0026] The preparation method includes the following steps:

[0027] Crush the raw materials, pass through a 100-mesh sieve, mix evenly, add propylene glycol to make the solid content 50%, and finally under the conditions of feeding temperature of 20°C, drying medium of air, inlet air temperature of 120°C, and outlet air temperature of 110°C After spray drying, the finished product is obtained.

Embodiment 2

[0029] A kind of green phosphor for LED lamp, the weight parts of each component are:

[0030] Terbium activated aluminate 60 parts, nano alumina 11 parts, calcium orthophosphate 7 parts, binder 5 parts, talcum powder 5 parts, antioxidant 3 parts.

[0031] The preparation method includes the following steps:

[0032] Crush the raw materials, pass through a 130-mesh sieve, mix evenly, add propylene glycol to make the solid content 55%, and finally under the conditions of feeding temperature of 25°C, drying medium of air, inlet air temperature of 125°C, and outlet air temperature of 115°C After spray drying, the finished product is obtained.

Embodiment 3

[0034] A kind of green phosphor for LED lamp, the weight parts of each component are:

[0035] 55 parts of terbium-activated aluminate, 8 parts of nano alumina, 5 parts of calcium orthophosphate, 4 parts of binder, 3 parts of talc, and 2 parts of antioxidant.

[0036] The preparation method includes the following steps:

[0037] Crush the raw materials, pass through a 110-mesh sieve, mix evenly, add propylene glycol to make the solid content 53%, and finally under the conditions of 22℃ for feed temperature, air for drying medium, 121℃ for inlet air and 113℃ for outlet temperature After spray drying, the finished product is obtained.

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PUM

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Abstract

The invention relates to a green phosphor for LED lamps and a preparation method thereof, and belongs to the technical field of preparation of a phosphor for lamps. The green phosphor for LED lamps comprises the following ingredients (by weight): 50-60 parts of terbium-activated aluminate, 5-11 parts of nanometer aluminium oxide, 3-7 parts of calcium orthophosphate, 3-5 parts of an adhesive, 1-5 parts of talcum powder and 1-3 parts of an antioxidant. The preparation method comprises the following steps: crushing the raw materials, sieving through a sieve of 100-150 meshes, uniformly mixing, adding propylene glycol until solid content is 50-60%, and finally spray-drying under conditions of feeding temperature being 20-30 DEG C, drying medium being air, inlet air temperature being 120-130 DEG C and outlet air temperature being 110-120 DEG C, so as to obtain a finished product. The phosphor is applied in LED, and has high luminous intensity and excellent stability. In addition, the product is nontoxic and harmless and can be used for a long time.

Description

technical field [0001] The invention relates to a fluorescent powder and a preparation method thereof, in particular to a green fluorescent powder for LED lamps and a preparation method thereof, and belongs to the technical field of fluorescent powder preparation for lamps. Background technique [0002] Light-emitting diodes are referred to as LEDs for short. Made of compounds containing gallium (Ga), arsenic (As), phosphorus (P), nitrogen (N), etc. LED is a semiconductor electronic component that can convert electrical energy into light energy. This electronic component appeared as early as 1962. In the early days, it could only emit red light with low luminosity. Later, other monochromatic light versions were developed. Today, the light that can be emitted has covered visible light, infrared rays and ultraviolet rays, and the luminosity has also increased to a considerable extent. of luminosity. And the use is also used as indicator lights, display panels, etc. from the ...

Claims

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Application Information

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IPC IPC(8): C09K11/71H01L33/50
Inventor 陈桂兴
Owner 陈桂兴
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