White light radiation glass for rare earth ion europium activating lamp and preparation method thereof
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The technology of rare earth ions and alkaline earth metal ions is applied in the field of preparation of white light-emitting glass, and achieves the effects of eliminating powder coating process, high luminous brightness and reducing production cost.
Inactive Publication Date: 2008-01-16
NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Although this method has attracted the interest of many scientific resea
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Embodiment 1
[0013] Each component of this glass composition is weighed by the following mole percentages:
[0014] CaO: 0.350; B 2 o 3 : 0.400;
[0015] NH 4 h 2 P 2 o 5 : 0.250; Eu 2 o 3 : 0.001.
[0016] CaCO will be accurately weighed according to the composition ratio 3 , B 2 o 3 , NH 4 h 2 P 2 o 5 、Eu 2 o 3 , Grinding and mixing, pass hydrogen into the furnace as a reducing atmosphere, and keep the temperature at 1500°C for 5.0h. After the glass is out of the furnace, it is shaped and annealed to obtain the final product.
Embodiment 2
[0018] Each component of this glass composition is weighed by the following mole percentages:
[0019] SrO: 0.450; B 2 o 3 : 0.250;
[0020] NH 4 h 2 P 2 o 5 : 0.300; Eu 2 o 3 : 0.010.
[0021] BaCO will be accurately weighed according to the composition ratio 3 , B 2 o 3 , NH 4 h 2 P 2 o 5 、Eu 2 o 3 , after grinding and mixing, put CO gas into the furnace as a reducing atmosphere, and keep the temperature at 1300°C for 3.0h. After the glass is out of the furnace, it is shaped and annealed to obtain the final product.
Embodiment 3
[0023] Each component of this glass composition is weighed by the following mole percentages:
[0024] BaO: 0.550; B 2 o 3 : 0.280;
[0025] NH 4 h 2 P 2 o 5 : 0.270; Eu 2 o 3 : 0.010.
[0026] BaCO will be accurately weighed according to the composition ratio 3 , B 2 o 3 , NH 4 h 2 P 2 o 5 、Eu 2 o 3 , After grinding and mixing, keep the temperature at 1100°C for 1.0h under air condition. After the glass is out of the furnace, it is shaped and annealed to obtain the final product.
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Abstract
The present invention discloses a rare earth ions europium activated lamp-use glass which emits white light, as well as the related preparation method. The chemical composition of the glass is aMO-bB2O3-cP2O5:dEuO, wherein, the aMO-bB2O3-cP2O5 is glass matrix; Eu2+ is luminescence ion; M is one of or more of alkaline earth metal ions Ca, Ba and Sr; a, b, c, d are the correspondingly composed mole percentage coefficient. The preparation method is that alkaline earth metal carbonate, boron oxide, alkaline-earth metal hydrogen phosphate salt and europium oxide are measured according to the composition and proportion of the glass and are fully grinded and uniformly mixed; the mixture will then be fused at 1100 to 1500 DEG C under the reducing condition or in the air for 1 to 5 hours; the glass melting liquid is molded and annealed to get the final product. The invention can directly prepare Eu2+ under weak oxidation atmosphere conditions in the air by changing the glass matrix composition, and make the single rare earth ion Eu2 + directly mix into the glass to get the glass that emits white light. The invention has the advantages of high concentration of the rare earth ions and high brightness, which omits the past bepowdering technology, simplifies the technology process and reduces the production costs.
Description
Technical field: [0001] The invention relates to a preparation method of white light-emitting glass, in particular to a kind of white light-emitting glass for lamps activated by rare earth ion europium and a preparation method thereof. Background technique: [0002] In the field of lighting, the main applications of rare earth luminescent materials are energy-saving fluorescent lamps, cold cathode fluorescent lamps, high-pressure mercury lamps, metal halide lamps, semiconductor light sources, and planar light sources. In 1973, Philips of the Netherlands first proposed three primary color phosphors for lamps. The three primary color phosphors for lamps are composed of red, green and blue phosphors activated by rare earth ions. The basic structure, preparation process and luminescence principle of the tri-primary fluorescent lamp are as follows: the inner wall of the lamp tube is coated with red, green and blue three-primary color fluorescent powder, and after power on, the m...
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IPC IPC(8): C03C3/16C03C4/12
Inventor 廉志红沈毅孙小星刘会欣黎月英
Owner NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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