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Synthetic method of luminescent material for sterilizing purifying energy conserving lamp

A technology of luminescent materials and synthesis methods, applied in luminescent materials, chemical instruments and methods, parts of gas discharge lamps, etc., can solve the problems of high ultraviolet intensity, complex synthesis methods, high cost, and achieve good powder fluidity, High luminous brightness and good stability

Inactive Publication Date: 2009-01-21
常熟市江南荧光材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. Purpose of the invention: The purpose of the present invention is to overcome the complex synthetic method of the existing luminescent material for sterilization and purification energy-saving lamps, high cost, and environmental pollution, and to provide a powder with good fluidity, high ultraviolet intensity, and environmental protection. Synthesis method of luminescent material for sterilizing and purifying energy-saving lamps with no pollution and low reduction rate

Method used

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  • Synthetic method of luminescent material for sterilizing purifying energy conserving lamp
  • Synthetic method of luminescent material for sterilizing purifying energy conserving lamp

Examples

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Embodiment 1

[0019] Components: 27.271g of alumina, 4.780g of strontium carbonate, 4.43g of barium carbonate, 5.115g of calcium carbonate, 8.404g of cerium oxide, 0.18g of boric acid, and 0.23g of lithium fluoride.

[0020] Thoroughly mix the above-mentioned components evenly, among which boric acid and lithium fluoride are used as flux, and are mixed and ground for 32 hours in a corundum ball mill jar equipped with agate balls with a diameter of 10 mm, and the mixed and ground oxides are put into a corundum crucible Carry out burning for 4 hours in a high-temperature oxidizing atmosphere, and the temperature is controlled at 1500°C. The burned product is crushed and passed through a 250-mesh sieve, followed by pickling treatment, and the product after cleaning and sieving with 0.1% nitric acid solution Suction filtration until neutral, drying at 100°C and passing through a 150-mesh sieve, again put the sieved product into a corundum crucible, and burn in a nitrogen-hydrogen (5% volume hydr...

Embodiment 2

[0022] Components: 20.259g of alumina, 4.526g of strontium carbonate, 4.110g of barium carbonate, 3.220g of calcium carbonate, 17.885g of cerium oxide, 0.12g of boric acid, and 0.28g of lithium fluoride.

[0023] Thoroughly mix the above components evenly, in which boric acid and lithium fluoride are used as flux, and are mixed and ground for 34 hours in a corundum ball mill jar equipped with agate balls with a diameter of 10 mm, and the mixed and ground oxides are put into a corundum crucible Burn for 3 hours in a high-temperature oxidizing atmosphere, and the temperature is controlled at 1400°C. The burned product is crushed and passed through a 250-mesh sieve, followed by pickling treatment, and a 0.5% nitric acid solution is used to clean and sieve the product Suction filtration until neutral, drying at 120°C, and passing through a 150-mesh sieve, and again put the sieved product into a corundum crucible, and burn it in a nitrogen-hydrogen (5% volume hydrogen nitrogen) mixe...

Embodiment 3

[0025] Components: 20.615g of alumina, 4.165g of strontium carbonate, 3.730g of barium carbonate, 3.000g of calcium carbonate, 18.490g of cerium oxide, 0.10g of boric acid, 0.30g of lithium fluoride

[0026] Thoroughly mix the above components evenly, in which boric acid and lithium fluoride are used as flux, and are mixed and ground for 37 hours in a corundum ball mill jar equipped with agate balls with a diameter of 10 mm, and the mixed and ground oxides are put into a corundum crucible Carry out burning for 5 hours in a high-temperature oxidizing atmosphere, and the temperature is controlled at 1600°C. The burned product is crushed and passed through a 250-mesh sieve, followed by pickling treatment, and a nitric acid solution with a concentration of 1% is used to clean and sieve the product Suction filtration until neutral, drying at 135°C and passing through a 150-mesh sieve, again put the sieved product into a corundum crucible, and burn in a nitrogen-hydrogen (5% volume h...

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Abstract

The invention discloses a method for synthesizing a luminescent material for a sterilizing and purifying energy-saving lamp. The method comprises the following steps: raw materials are weighed according to the mixture ratio of the chemical formula (N1-x-y My Cex)3Al12O19, and a fluxing additive is taken, and the materials are uniformly mixed and added into a corundum crucible which is then placed into an oxidizing atmosphere furnace for burning; a substance obtained is crushed and sieved and undergoes acid cleaning to neutrality through a dilute nitric acid solution, and the powder undergoes pumping filtration and drying; and the powder is placed into a reducing atmosphere for burning, and a finished product is obtained after final sieve classification. The method has the advantages that one or more than one among boric acid, barium fluoride, strontium fluoride, lithium chloride and lithium fluoride is taken as a fluxing agent and other certain rare earths and metal oxide are doped; and the luminescent material for the sterilizing and purifying energy-saving lamp synthesized by adoption of the method has good particle appearance and powder fluidity, high luminous brightness and uv intensity, and can sterilize, purify the air and distinguish counterfeit money.

Description

technical field [0001] The invention relates to a method for synthesizing a luminescent material, in particular to a method for synthesizing a luminescent material for sterilization and purification of energy-saving lamps. Background technique: [0002] The existing materials for sterilization and purification lamps are mainly composed of the following (CaZn) 3 (PO4) 2 : Tl, Sr 4 Al 14 o 25 :Pb, BaSi 2 o 5 : Pb, Ln 1-x PO 4 : Ce x (Ln:La-Gd-Y), generally all are made by high-temperature solid-phase synthesis method, and the existing luminescent materials have low ultraviolet intensity (such as figure 2 ), the bactericidal effect is poor, a large number of harmful Pb and P substances are used, and the synthesis method is more complicated, the cost is high, and the ecological environment is affected. The material of the invention solves the above-mentioned existing problems, and has good particle shape, good powder fluidity, good stability, high ultraviolet intensity...

Claims

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Application Information

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IPC IPC(8): C09K11/80H01J61/44
CPCY02P20/10
Inventor 曾庆云胡程
Owner 常熟市江南荧光材料有限公司
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