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Manufacturing method of red fluorescent powder for tri-phosphor energy saving lamp

A technology of red phosphor powder and manufacturing method, which is applied in chemical instruments and methods, sustainable manufacturing/processing, luminescent materials, etc., can solve the problem that the luminous efficiency cannot be reduced, and achieve the characteristics of preventing luminous effect decay, high luminous efficiency, and easy operation. The effect of increasing the range

Inactive Publication Date: 2013-09-18
CAIHONG GRP ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Energy-saving lamps made of tri-primary energy-saving lamp powder are widely used. However, the shortcomings of this energy-saving lamp are gradually emerging, especially in the application of compact tri-primary energy-saving lamps. The temperature in the bulb is relatively high, generally 70-180 degrees Celsius, which requires the phosphor powder coated on the inner wall of the bulb to have high temperature resistance, especially the three-color red used in it has high temperature resistance at this temperature, specifically , the luminous efficiency of the red phosphor powder used in this kind of bulb lamp cannot be reduced in a closed environment of 70-180 degrees Celsius, and the phenomenon of thermal quenching cannot occur when used at high temperatures

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A kind of manufacture method of red fluorescent powder for tricolor energy-saving lamp, it comprises the steps:

[0019] Step 1, pass the main material and auxiliary materials through a 100-mesh sieve and mix them into raw materials for fluorescent powder, wherein the main material is composed of Eu with a mass percentage of 6.3 2 o 3 and 93.7% of Y 2 o 3 Composition, the auxiliary material consists of LiF equivalent to 3% of the total weight of the main material, and H of 0.08% of the total weight of the main material 3 BO 3 And the barium chloride composition of 3.0% of main material gross weight;

[0020] Step 2: Put the sieved raw materials into the mixer, the grinding body is nylon balls, and mix them with the ratio of raw materials:nylon balls at a mass ratio of 9:1, and mix them for 24 hours to get evenly mixed phosphor raw materials. Put the homogeneously mixed phosphor raw materials into an alumina crucible, put the alumina crucible into a tunnel furnace u...

Embodiment 2

[0023] A kind of manufacture method of red fluorescent powder for tricolor energy-saving lamp, it comprises the steps:

[0024] Step 1, pass the main material and auxiliary material through a 100-mesh sieve and mix them into the raw material of phosphor powder, wherein the main material is composed of 6.5% Eu 2 o 3 and 93.5% of Y 2 o 3 Composition, the auxiliary material consists of LiF equivalent to 2.5% of the total weight of the main material, and 0.09% of the total weight of the main material H 3 BO 3 And the barium chloride composition of 3.5% of main material gross weight;

[0025] Step 2, put the sieved raw materials into the mixer, and the grinding body is Nylon balls are mixed with a mass ratio of raw materials: nylon balls of 9:1, and mixed for 18 hours to obtain uniformly mixed phosphor raw materials. Put the uniformly mixed phosphor raw materials into an alumina crucible, and put the alumina crucible into Put it into a tunnel furnace under an oxidizing atmos...

Embodiment 3

[0028] A kind of manufacture method of red fluorescent powder for tricolor energy-saving lamp, it comprises the steps:

[0029] Step 1, pass the main material and the auxiliary material through a 100-mesh sieve and mix them into the raw material of the fluorescent powder, wherein the main material is composed of 6.3% Eu 2 o 3 and 93.7% of Y 2 o 3 Composition, the auxiliary material consists of LiF equivalent to 4% of the total weight of the main material, and 0.08% of the total weight of the main material H 3 BO 3 And the barium chloride composition of 3.0% of main material gross weight;

[0030] Step 2: Put the sieved raw materials into the mixer, the grinding body is nylon balls, and mix them with the ratio of raw materials:nylon balls at a mass ratio of 9:1, and mix for 20 hours to obtain evenly mixed phosphor raw materials. Put the uniformly mixed phosphor raw materials into an alumina crucible, put the alumina crucible into a tunnel furnace under an oxidizing atmosph...

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Abstract

The invention relates to a manufacturing method of red fluorescent powder for a tri-phosphor energy saving lamp. The manufacturing method of the red fluorescent powder comprises the following steps of: firstly, sieving raw materials, namely Y2O3, Eu2O3, LiF, H3BO3 and BaCl2, and then mixing to form a raw material of the red fluorescent powder; secondly, mixing the sieved raw materials, placing the mixed raw materials into a tunnel furnace under the oxidation atmosphere, firing at a high temperature, and cooling to obtain a fired product, namely a primary product; thirdly, grinding the fired fluorescent primary product, sieving with a 100-mesh sieve, throwing the sieved fluorescent powder into a dispersion machine, sieving powder syrup with a 500-mesh water sieve, washing, carrying out suction filtration, drying, and sieving the dried powder with a 200-mesh sieve, thus the red fluorescent powder for the tri-phosphor energy saving lamp is obtained. The obtained fluorescent powder has the characteristics of small high temperature attenuation, moderate particle size and high lighting effect.

Description

technical field [0001] The invention belongs to the technical field of fluorescent powder preparation, and in particular relates to a method for manufacturing red fluorescent powder for tricolor energy-saving 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-primary energy-saving lamp powder are widely used. However, the shortcomings of this energy-saving lamp are gradually emerging, especially in the application of compact tri-primary energy-saving lamps. The temperature in the bulb is relatively high, generally 70-180 degrees Celsius, which requires the phosphor powder coated on the inner wall of the bulb to have high temperature resistance, especially the three-color red used in it has high temperature resistance at this temperature, specifically , The red phosphor powder used in this kind of bulb l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/86
CPCY02P20/10
Inventor 范双宏郑晓军杨欣钟文涛
Owner CAIHONG GRP ELECTRONICS CO LTD
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