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Phosphorus silicate yellow-green long afterglow glass and preparing method

A phosphosilicate and long afterglow technology, which is applied in the field of phosphosilicate yellow-green long afterglow glass and its preparation, can solve the problems of low terbium ion doping concentration, complicated process, poor long afterglow performance of glass, etc., to achieve Good doping performance and luminescence performance, increase the doping concentration, and accurately control the effect of doping amount

Inactive Publication Date: 2007-11-14
NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is fired under pressure conditions, the process is complicated, and the doping concentration of terbium ions is low, and the long afterglow performance of the glass is not good.

Method used

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  • Phosphorus silicate yellow-green long afterglow glass and preparing method

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Embodiment 1

[0024] The molar percentage composition of the glass is: 73% zinc oxide, 10% phosphorus pentoxide, 15% silicon dioxide, 2% calcium oxide, and 1.25% terbium oxide. Dissolve ethyl orthosilicate in an appropriate amount of ethanol, ammonium dihydrogen phosphate and citric acid with twice the molar amount of metal ions are dissolved in distilled water, zinc oxide and calcium oxide are respectively dissolved in 1:1 nitric acid, terbium oxide is dissolved in Concentrated nitric acid, and then mix the above liquids under the condition of stirring, adjust the pH=1 after stirring for 1 hour, continue stirring for 1 hour to form a sol, put it in a water bath at 80°C for sol-gel reaction for 10 hours, and form a gel. Dry it in an oven at 100°C, heat it at 1400°C for 2 hours, and anneal it at 450°C for half an hour to obtain a colorless, transparent long afterglow glass. Excite the glass with UV254nm ultraviolet rays for half an hour, remove the excitation light source, and the glass emit...

Embodiment 2

[0026] The molar percentage composition of the glass is: 65% zinc oxide, 10% phosphorus pentoxide, 10% silicon dioxide, 5% magnesium oxide, 0.5% terbium oxide. Dissolve ethyl orthosilicate in an appropriate amount of ethanol, ammonium dihydrogen phosphate and citric acid in equimolar amounts to metal ions are dissolved in distilled water, zinc oxide and magnesium oxide are respectively dissolved in 1:1 nitric acid, terbium oxide is dissolved in concentrated Nitric acid, then mix the above liquids under the condition of stirring, adjust the pH=0.5 after stirring for 1 hour, continue to stir for 1 hour to form a sol, put it into a 90°C water bath for 8 hours through sol-gel reaction, and form a gel. Dry in an oven at 100°C, react at 1400°C for 1 hour, and anneal at 450°C for 2 hours to obtain a colorless, transparent long afterglow glass. Excite the glass with UV254nm ultraviolet rays for half an hour, remove the excitation light source, the glass emits a bright yellow-green lon...

Embodiment 3

[0028] The molar percentage composition of the glass is: 70% zinc oxide, 20% phosphorus pentoxide, 10% silicon dioxide, and 0.25% terbium oxide. Dissolve ethyl orthosilicate in an appropriate amount of ethanol, ammonium dihydrogen phosphate and citric acid in equimolar amounts to metal ions are dissolved in distilled water, zinc oxide is dissolved in 1:1 nitric acid, terbium oxide is dissolved in concentrated nitric acid, and then Mix the above liquids under the condition of stirring, adjust the pH=1 after stirring for 1 hour, continue to stir for 1 hour to form a sol, put it in a 50°C water bath for 16 hours to form a gel, and put it in a 100°C oven to dry Dry, react at 1200°C for 0.5 hours, and anneal at 450°C for 1 hour to obtain a colorless, transparent long afterglow glass. Excite the glass with UV254nm ultraviolet rays for half an hour, remove the excitation light source, the glass emits a bright yellow-green long afterglow, and after stopping the excitation for 8 hours,...

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Abstract

This invention relates to a kind of phospho-silicate Kelly steady persistence glass and preparation method. This invention selects ethyl silicate, dihydrogen phosphate ammonia and zinc oxide as main glass matrix, citric acid as sequester, and single incorporation of terbium ion. The glass molar composition is expressed as follow formulae: ( A - X) ZnO - bP2O5 - cSiO2 - xRO - d Tb4O7. The method of preparation is: dissolve ethyl orthosilicate in appropriate amount ethanol, dissolve dihydrogen phosphate ammonia and citric acid respectively in distilled water; dissolve zinc oxide and RO in nitric acid of 1:1, dissolve terbium oxide in form aqua fortis; then mix above liquid under stirring condition, whipping for one hours, the adjust PH about 0.5 to 3, keep on whipping for 1 hour to form collosol, then enter 50 to 90 deg water-bath for collosol / gelatin reaction, form gel, then enter 100deg baking over for drying; 1200 to 1500 deg constant temperature for 0.5h to 2 hours, annealing treatment 0.5 to 3 hours, gain colorless, transparent steady persistence glass; use UV254nm ultraviolet to stimulate, remove excitation light source, in the dark the vitreous kelly steady persistence hour can reach 10 hours upwards.

Description

Technical field: [0001] The invention relates to a preparation method of long afterglow glass, in particular to a phosphorosilicate yellow-green long afterglow glass and a preparation method thereof. Background technique: [0002] Long afterglow materials refer to materials that can absorb and store the energy of external light irradiation, and then slowly release these energy in the form of visible light at room temperature. It has been widely used in emergency indicating equipment, low-light lighting, handicrafts and decoration materials. [0003] At present, the long afterglow materials reported at home and abroad are mainly polycrystalline powders. Due to the inhomogeneity of particle shape and size, its application field is limited to a certain extent. Compared with long afterglow powder, glass has the characteristics of uniformity, transparency, good stability and isotropy, and it is easy to make products of various shapes such as fibers and large-size templates. In ...

Claims

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Application Information

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IPC IPC(8): C03C3/062C03C4/12
CPCC03C4/12C03C3/062C03C4/02
Inventor 沈毅廉志红曹玉霞
Owner NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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