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A kind of preparation method of composite fluorescent glass cover

A composite fluorescent and glass cover technology, which is applied in glass manufacturing equipment, glass molding, chemical instruments and methods, etc., can solve the problem of increasing the radiation of red light in luminescent materials, small thermal conductivity of epoxy resin, and poor coating of fluorescent materials. Uniformity and other issues to achieve the effect of improving the effective utilization capacity, solving aging yellowing, and enhancing the intensity of fluorescent light

Active Publication Date: 2021-01-05
霖鼎光学(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that in view of the uneven application of fluorescent materials in practical applications, it is necessary to increase the radiation of the red light part of the luminescent materials, and the thermal conductivity of the epoxy resin encapsulating the lamp body is small, and the heat accumulates in the lamp body causing The junction temperature of the chip rises, which leads to the problems of temperature quenching effect, color drift, resin yellowing, and shortened life. A method for preparing a composite fluorescent glass cover is provided.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0020] Add 0.10 mol of tetraethyl orthosilicate to 50 mL of absolute ethanol, stir at 300 r / min for 20 min, adjust the pH to 3 with a 5% nitric acid solution, and stir at 30°C for 1 h to obtain a pre-hydrolyzed solution. Take 0.003 mol Add europium nitrate, 0.001mol bismuth nitrate, 0.092mol yttrium nitrate, 0.10mol aluminum nitrate, 0.10mol zinc nitrate, 0.10mol tellurium oxide into 1.0L deionized water, stir and heat at 300r / min to 80°C, keep stirring for 30min to obtain a mixture solution, add the mixed solution dropwise into the pre-hydrolyzed solution at 2mL / min, continue to stir at 200r / min until the dropwise addition is complete, continue to stir for 2h, and then place it at 25°C for 7 days to obtain a wet gel. Put the gel in a drying oven and dry at 40°C for 2 days to obtain a dry gel. Put the dry gel into a grinder and grind it for 1 hour, then put it into a resistance furnace, and raise the temperature to 850°C at a heating rate of 5°C / min. Insulated and melted for 2...

example 2

[0022] Add 0.11 mol of tetraethyl orthosilicate to 80 mL of absolute ethanol, stir at 350 r / min for 25 min, adjust the pH to 3 with a 5% nitric acid solution, and stir at 35°C for 1 h to obtain a pre-hydrolyzed solution. Take 0.004 mol Add europium nitrate, 0.002mol bismuth nitrate, 0.095mol yttrium nitrate, 0.11mol aluminum nitrate, 0.11mol zinc nitrate, 0.11mol tellurium oxide into 1.1L deionized water, stir and heat at 350r / min to 85°C, keep stirring for 35min to obtain a mixture solution, add the mixed solution dropwise into the pre-hydrolyzed solution at 2mL / min, continue to stir at 250r / min until the dropwise addition is complete, continue to stir for 2h, and then place it at 28°C for 8 days to obtain a wet gel. Place the gel in a drying oven and dry at 60°C for 2 days to obtain a xerogel. Put the xerogel in a grinder and grind it for 1 hour, then put it into a resistance furnace, and raise the temperature to 880°C at a heating rate of 5°C / min. Insulated and melted for 2...

example 3

[0024] Add 0.12 mol of tetraethyl orthosilicate to 100 mL of absolute ethanol, stir at 400 r / min for 30 min, adjust the pH to 4 with a 5% nitric acid solution, and stir at 40°C for 2 h to obtain a pre-hydrolyzed solution. Take 0.005 mol Add europium nitrate, 0.003mol bismuth nitrate, 0.096mol yttrium nitrate, 0.12mol aluminum nitrate, 0.12mol zinc nitrate, and 0.12mol tellurium oxide into 1.2L deionized water, stir and heat to 90°C at 400r / min, keep stirring for 40min to obtain a mixture solution, add the mixed solution dropwise to the pre-hydrolyzed solution at 3mL / min, continue to stir at 300r / min until the dropwise addition is complete, continue to stir for 3h, and then place it at 30°C for 10 days to obtain a wet gel. Put the gel in a drying oven and dry at 70°C for 3 days to obtain a dry gel. Put the dry gel into a grinder and grind it for 2 hours, then put it into a resistance furnace, and raise the temperature to 900°C at a heating rate of 5°C / min. Insulated and melted ...

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PUM

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Abstract

The invention relates to a preparation method for a composite fluorescent glass cover, and belongs to the technical field of lamp illumination. According to the method provided by the invention, bismuth-doped Y2O3:Eu<3+> fluorescent powder is synthesized, and the situation that 6s<2> -> 6s6p of a bismuth ion belongs to electric dipole allowed transition to overcome the problem that transition absorption intensity in 4f configuration of a rare earth ion is lower; Bi<3+> has a sensitization effect on Eu<3+>, the Bi<3+> is used as a light-emitting sensitizer, near-ultraviolet absorption of a Bi<3+> charge transfer band is utilized to effectively transfer absorbed energy to an excited state energy level of the rare earth ion, so that the effective utilization capability of exciting light is improved, and the fluorescence light-emitting intensity of the Eu<3+> is enhanced; a fluorescent powder material is fully dispersed into a glass matrix to solve the problem of uniformity of coating of the fluorescent material; and a zinc tellurate / zinc aluminate glass substrate is used to replace epoxy resin or a silica gel to be used as a packaging material, so that the problems that white light isshifted and a halo effect appears because the epoxy resin or the silica gel is subjected to aging yellowing can be effectively solved.

Description

technical field [0001] The invention relates to a preparation method of a composite fluorescent glass cover, which belongs to the technical field of lamp lighting. Background technique [0002] All solid white light-emitting diodes will be used as the lighting source to replace the lighting source represented by incandescent lamps, triggering a revolution in the lighting industry. This has achieved a consensus in the scientific and industrial circles, and countries all over the world hope to seize the opportunity in this field. White light LED involves solid-state physics (including semiconductor optoelectronics, solid-state luminescence), inorganic and organic chemistry, opto-mechanical and thermal conduction and other disciplines, and its development is closely related to human life. As a lighting source, the advantages of white LEDs are many. The first is energy saving. Its power consumption is only 1 / 8 of that of white lamps and 1 / 2 of that of fluorescent lamps with the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03B8/02C03C4/12C03C6/00C09K11/78H01L33/50
CPCC03B19/12C03C1/00C03C4/12C09K11/7787H01L33/502H01L33/505
Inventor 孟浩影王文新韩昏晓
Owner 霖鼎光学(上海)有限公司
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