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A rare earth-doped luminescent glass and its preparation method

A technology of luminescent glass and rare earth doping, which is applied in the field of inorganic luminescent materials, rare earth doped luminescent glass and its preparation, which can solve the problems of microcrystallization of luminescent glass, complex spectrum control, low mechanical strength, etc., and achieve mechanical Good performance, controllable spectrum and high mechanical strength

Active Publication Date: 2020-10-30
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the glass involved in this invention patent is a borate glass system with relatively low mechanical strength, and the glass composition contains CaF 2 , during the melting process of the glass, the glass melt will corrode the crucible, and during industrial production, the glass melt will corrode the refractory material of the furnace; and this invention does not involve the microcrystallization of luminescent glass, and the spectrum control is relatively complicated

Method used

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  • A rare earth-doped luminescent glass and its preparation method
  • A rare earth-doped luminescent glass and its preparation method
  • A rare earth-doped luminescent glass and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0033] A rare earth-doped luminescent glass, comprising the following mole fractions: SiO2 : 55 copies, P 2 o 5 : 5 parts, Al 2 o 3 : 8 parts, ZnO: 12 parts, CaO: 10 parts, Na 2 O: 10 parts, Tb 4 o 7 : 0.02 parts.

[0034] The preparation method of the above-mentioned rare earth-doped luminescent glass comprises the steps of:

[0035] (1) Accurately weigh 13.8962g of silicon dioxide, 4.8370g of ammonium dihydrogen phosphate, 3.4302g of aluminum oxide, 4.1073g of zinc oxide, 4.2091g of calcium carbonate, 4.4573g of sodium carbonate, and 0.0629g of terbium oxide according to the composition of the above-mentioned luminescent glass. g, after fully grinding and mixing these raw materials to obtain a glass batch;

[0036] (2) Melting: Pour the glass batch into a corundum crucible, heat up to 1550°C at a heating rate of 5°C / min under air atmosphere, and melt at 1550°C for 1 hour to obtain molten glass; 2) The obtained molten glass is poured into a preheated stainless steel m...

Embodiment 2

[0040] A rare earth-doped luminescent glass, comprising the following mole fractions: SiO 2 : 55 copies, P 2 o 5 : 5 parts, Al 2 o 3 : 8 parts, ZnO: 12 parts, CaO: 10 parts, Na 2 O: 10 parts, Dy 2 o 3 : 0.05 parts.

[0041] The preparation method of the above-mentioned rare earth-doped luminescent glass comprises the steps of:

[0042] (1) Accurately weigh 13.8900g of silicon dioxide, 4.8349g of ammonium dihydrogen phosphate, 3.4287g of aluminum oxide, 4.1055g of zinc oxide, 4.2073g of calcium carbonate, 4.4553g of sodium carbonate, and 0.0784g of dysprosium oxide according to the composition of the above-mentioned luminescent glass. g, after fully grinding and mixing these raw materials to obtain a glass batch;

[0043] (2) Melting: Pour the glass batch into a corundum crucible, heat up to 1550°C at a heating rate of 5°C / min under air atmosphere, and melt at 1550°C for 1 hour to obtain molten glass; 2) The obtained molten glass is poured into a preheated stainless st...

Embodiment 3

[0047] A rare earth-doped luminescent glass, comprising the following mole fractions:

[0048] SiO 2 : 55 copies, P 2 o 5 : 5 parts, Al 2 o 3 : 8 parts, ZnO: 12 parts, CaO: 10 parts, Na 2 O: 10 parts, Tb 4 o 7 : 0.02 parts, Dy 2 o 3 : 0.05 parts.

[0049] The preparation method of the above-mentioned rare earth-doped luminescent glass comprises the steps of:

[0050] (1) Accurately weigh 13.8651g of silicon dioxide, 4.8262g of ammonium dihydrogen phosphate, 3.4226g of aluminum oxide, 4.0981g of zinc oxide, 4.1997g of calcium carbonate, 4.4473g of sodium carbonate, and 0.0627g of terbium oxide according to the composition of the above-mentioned luminescent glass. g, dysprosium oxide 0.0783g, these raw materials are fully ground and mixed to obtain glass batch material;

[0051] (2) Melting: Pour the glass batch into a corundum crucible, heat up to 1550°C at a heating rate of 5°C / min under air atmosphere, and melt at 1550°C for 1 hour to obtain molten glass; 2) The o...

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Abstract

The invention provides a rare earth doped luminescent glass and a preparation method thereof. The rare earth doped luminescent glass is prepared from the following components in parts by molar: 40 to70 parts of SiO2, 1 to 20 parts of P2O5, 2 to 20 parts of Al2O3, 5 to 20 parts of ZnO, 5 to 20 parts of CaO, 5 to 20 parts of Na2O, and 0.01 to 0.4 part of rare earth luminous source. The luminescent glass is prepared in an air atmosphere by adopting a melt cooling method; by changing the glass matrix composition, in particular, adjusting the content of P2O5 in the glass, the spontaneous crystallization of a glass melt during the cooling process is regulated, thereby adjusting the luminescence performance of the luminescent glass. The luminescent glass provided by the invention has good mechanical properties and stable chemical properties, can control the spectrum by a simple method, and can replace a phosphor and an epoxy resin in an LED (Light Emitting Diode) light-emitting device.

Description

technical field [0001] The invention relates to an inorganic luminescent material, in particular to a rare earth-doped luminescent glass and a preparation method thereof, belonging to the technical field of luminescent glass. Background technique [0002] Environmental protection and energy saving have gradually become the global trend of scientific research in the new century, and the research of Light Emitting Diode (LED) lighting has become the most concerned hot spot in recent years. White LED (W-LED) is a semiconductor light-emitting device that converts electrical energy into light energy. As the third-generation lighting source after incandescent lamps and fluorescent lamps, it has energy-saving, long life, short start-up time, environmental protection, low-voltage safety, etc. Features, has now become a high-tech product with great development prospects and influence, and is expected to replace the current incandescent and fluorescent lamps and become the leading lig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C3/097C03C4/12
CPCC03C3/097C03C4/12
Inventor 朱超峰何智钢黄盛吴欣宇
Owner QILU UNIV OF TECH
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