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Colour luminescent powder and its preparation method

A luminous powder, color technology, applied in chemical instruments and methods, luminescent materials, etc., can solve the problems of uneven distribution of components, waste of rare earth, high firing temperature, easy to crush and use, save production costs, reduce The effect of production costs

Inactive Publication Date: 2003-07-16
李瑞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the existing commercially available luminous powder, the rare earth content is much greater than the theoretical dosage, so that the components cannot be evenly distributed, so that the rare earths are agglomerated, resulting in waste of rare earths. reduce
In the prior art, the rare earth element europium is used, because europium Eu 3+ →Eu 2+ The transformation requires a reducing atmosphere, and the external reduction of powder is used. In the process of forming crystals, it is difficult to ensure the internal microscopic formation environment.
In addition, during the firing process of luminous powder, the firing temperature is high and the time is long, and the particle size after crushing is uneven

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1 Yellow luminous powder

[0027] 10 catties of calcium oxide, 51 catties of strontium oxide, 35 catties of aluminum oxide, 3 catties of potassium tetraborate, 2 catties of reducing agent, 0.09 g of manganese oxide (180 ppm), 0.1 g of lithium oxide (200 ppm), 0.05 g of zinc oxide (total 100ppm parts), europium oxide 0.1 gram (total 200ppm parts) and dysprosium oxide 0.4 gram (total 800ppm parts) are ten kinds of raw materials altogether, and total weight is 101.00148 jins, joins in twice weight (being 202.00296 jins) alcohol, grinds It is milky, dried in the air, placed at a firing temperature of 900-1050°C, sintered under oxygen for 1-3 hours, and cooled to obtain the patented product.

Embodiment 2

[0028] Example 2 Bright red luminous powder

[0029] 26 catties of magnesium oxide, 8 catties of calcium oxide, 39 catties of barium oxide, 0.1 catties of neodymium oxide, 24 catties of aluminum oxide, 1.6 catties of potassium tetraborate, 1 catties of reducing agent, 0.075 g of manganese oxide (150 ppm), 0.08 g of lithium oxide (together 160ppm part) and europium oxide 0.04 gram (together 80ppm part) ten kinds of raw materials altogether, gross weight is 99.70039 jin, with the method for embodiment 1, alcohol is 199.40078 jin, and firing temperature is 820-1040 ℃.

Embodiment 3

[0030] Example 3 Sky blue luminous powder

[0031] 6 catties of magnesium oxide, 48 catties of strontium oxide, 40 catties of aluminum oxide, 3 catties of potassium tetraborate, 2 catties of reducing agent, 0.05 g of manganese oxide (100 ppm), 0.06 g of lithium oxide (120 ppm), 0.04 g of zinc oxide (together 80ppm part), europium oxide 0.08 gram (together 160ppm part) and dysprosium oxide 0.07 gram (together to 140ppm part) ten kinds of raw materials altogether, gross weight is 99.0006 jin, with the method for embodiment 1, alcohol is 198.0012 jin, burns The temperature is 800-1050°C.

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PUM

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Abstract

A color luminous powder is prepared from alkali-earth metal oxide, alumina, neodymium oxide, ammonium oxide, copper oxide, potassium tetraborate, reducer, manganese oxide, lithium oxide, zine oxide, europium oxide and dysprosium oxide. Its advantages are less consumption of RE, high brightness and low sintering temp.

Description

technical field [0001] The invention relates to luminescent materials, in particular to colored luminescent powder and a preparation method thereof. Background technique [0002] In the existing commercially available luminous powder, the rare earth content is much greater than the theoretical dosage, so that the components cannot be evenly distributed, so that the rare earths are agglomerated, resulting in waste of rare earths. reduce. In the prior art, the rare earth element europium is used, because europium Eu 3+ →Eu 2+ The transformation requires a reducing atmosphere, and the external reduction of powder is used. In the process of forming crystals, it is difficult to ensure the internal microscopic formation environment. In addition, during the firing process of luminous powder, the firing temperature is high and the time is long, and the particle size after crushing is uneven. Contents of the invention [0003] The object of the present invention is to overcome ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/78
Inventor 李瑞
Owner 李瑞
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