Preparation method of blue phosphor for three-basic-color energy-saving lamps

A blue phosphor, energy-saving lamp technology, applied in chemical instruments and methods, luminescent materials, sustainable manufacturing/processing, etc., can solve the problems of poor anti-ultraviolet degradation performance, low luminous flux maintenance rate, poor thermal processing performance, etc. , to achieve excellent anti-ultraviolet degradation performance and thermal processing performance, high luminous flux maintenance rate, and the effect of reducing impurities

Inactive Publication Date: 2015-01-14
CAIHONG GRP ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages in the prior art are that the blue powder used for tricolor energy-saving lamps has poor anti-ultraviolet degradation performance and poor thermal processing performance, which leads to large changes in color temperature before and after baking the tube, and large light decay, which leads to low luminous efficiency and low luminous flux of the product after the lamp is made. Low maintenance rate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A kind of manufacture method of blue fluorescent powder for tricolor energy-saving lamp, it comprises the steps:

[0032] First, the mass percentage is 68.20% Al 2 o 3 , 16.30% BaCO 3 , 6.34% SrCO 3 , 0.32% MnCO 3 , 5.21% MgO, 2.43% Eu 2 o 3 , 0.40% LiF, 0.80% AlF 3 First pass through a 100-mesh sieve;

[0033] Second, mix the sieved BaCO3, SrCO3, MnCO3, MgO, and Eu2O3 into powder according to the ratio of step 1, then perform wet mixing according to the powder: water mass ratio of 2:1, and burn at 940°C. burning treatment;

[0034] Third, add the raw meal that has been burnt in step 2 into the mixing ball according to the ratio of 100kg raw meal to 40 mixing balls, mix for 12 hours, then release the mixed raw meal, and carry out weak air flow dispersion treatment, the pressure is 0.1MPa, 100-mesh sieve after the air flow is dispersed, and the evenly mixed phosphor raw material is obtained after sieving. Put the evenly mixed phosphor raw material into an alumin...

Embodiment 2

[0037] A kind of manufacture method of blue fluorescent powder for tricolor energy-saving lamp, it comprises the steps:

[0038] First, the mass percentage is 66.00% Al 2 o 3 , 17.40% BaCO 3 , 6.14% SrCO 3 , 0.40% MnCO 3 , 6.18% MgO, 2.78% Eu 2 o 3 , 0.50% LiF, 0.60% AlF 3 First pass through a 100-mesh sieve;

[0039] Second, mix the sieved BaCO3, SrCO3, MnCO3, MgO, and Eu2O3 into powder according to the ratio of step 1, and then carry out wet mixing according to the powder: water mass ratio of 3.5:1, and burn at 980 ° C. burning treatment;

[0040]Third, add the raw meal that has been burned in step 2 to the mixing ball according to the ratio of 100kg raw meal to 40 mixing balls, mix for 15 hours, then release the mixed raw meal, and carry out weak air flow dispersion treatment, the pressure is 0.15MPa, the raw material after air flow dispersion is sieved with 100 meshes, and after the sieve, the evenly mixed phosphor raw material is obtained, and the evenly mixed ph...

Embodiment 3

[0043] A kind of manufacture method of blue fluorescent powder for tricolor energy-saving lamp, it comprises the steps:

[0044] First, the mass percentage is 69.80% Al 2 o 3 , 15.00% BaCO 3 , 6.50% SrCO 3 , 0.24% MnCO 3 , 4.06% MgO, 3.20% Eu 2 o 3 , 0.80% LiF, 0.40% AlF 3 First pass through a 100-mesh sieve;

[0045] Second, mix the sieved BaCO3, SrCO3, MnCO3, MgO, and Eu2O3 into powder according to the ratio of step 1, then perform wet mixing according to the powder: water mass ratio of 5:1, and burn at 1050 ° C. burning treatment;

[0046] Third, add the raw meal that has been burnt in step 2 into the mixing ball according to the ratio of 100kg raw meal to 40 mixing balls, mix for 18 hours, then release the mixed raw meal, and carry out weak air flow dispersion treatment, the pressure is 0.2MPa, 100-mesh sieve after the air flow is dispersed, and the evenly mixed phosphor raw material is obtained after the sieve, put the evenly mixed phosphor raw material into the ...

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PUM

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Abstract

The invention discloses a preparation method of blue phosphor for three-basic-color energy-saving lamps. The preparation method comprises the following steps: after BaCO3, SrCO3, MnCO3, MgO and Eu2O3 are sieved, carrying out wet mixing on the obtained powder and water in a certain powder-water mass ratio, and burning the obtained mixture; then, mixing the burned material with other raw materials, discharging the obtained mixed raw material, carrying out weak airflow decentralized processing, and sequentially sieving, mixing, burning and cooling the burned product, so that the cooled burned product, namely a primary product, is obtained; and finally, after the burned primary product of the phosphor is crushed, sieving the crushed product, putting the sieved phosphor powder into a dispersion machine, sequentially carrying out water washing, suction filtration and drying on the powder, and sieving the dried powder, so that the blue phosphor for three-basic-color energy-saving lamps is obtained. The phosphor has good ultraviolet degradation resistance and hot working properties, and has the characteristics of high lumen maintenance, high luminous efficacy, small color shift, and the like.

Description

technical field [0001] The invention relates to a method for manufacturing fluorescent powder, in particular to a method for preparing blue fluorescent powder for tricolor energy-saving lamps. Background technique [0002] As people's demand for energy-saving lamps becomes more and more extensive, energy-saving lamps made of three-color energy-saving lamp powder are widely used. However, the shortcomings of this kind of energy-saving lamps gradually emerged. The luminous efficiency is low and the light decay is relatively large. 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 BaMgAl10O17:Eu. People have a long history of research on barium magnesium europium aluminate blue phosphor. [0003] At present, the high-temperature solid-phase synthesis method is the most widely used because of its simple equipment, stable pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/64
CPCY02P20/10
Inventor 贾宏平杨欣范双宏张博
Owner CAIHONG GRP ELECTRONICS CO LTD
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