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Full-spectrum borosilicate fluorescent glass and preparation method thereof

A technology of borosilicate and fluorescent glass, which is applied in the field of full-spectrum borosilicate fluorescent glass and its preparation, can solve the problems of no full-spectrum fluorescent glass, difficult doping of red phosphor, easy reaction, etc., and achieve the goal of expanding Type field and application range, simple process, effect of high thermal conductivity

Active Publication Date: 2020-01-17
NINGBO LONGER LIGHTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since there are many types of precursor glass powders, and the nitrides and precursor glass powders are easy to react at high temperature, it is difficult to incorporate red phosphor powder into the glass matrix, so there is no full-spectrum fluorescent glass in the prior art.

Method used

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  • Full-spectrum borosilicate fluorescent glass and preparation method thereof
  • Full-spectrum borosilicate fluorescent glass and preparation method thereof
  • Full-spectrum borosilicate fluorescent glass and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] According to the mole percentage of each raw material in the full-spectrum borosilicate fluorescent glass, it is fully mixed according to the proportion of 10% Na2O, 20% ZnO, 30% B2O3, 20% SiO, and 20% MgO, Mix the raw materials evenly and melt them. The melting temperature is 1000°C, and keep warm for 1 hour to obtain molten glass; pour the molten glass into cold water, and perform water quenching to cool down to obtain transparent matrix glass; grind the glass into powder and pass through a 200-mesh sieve .

[0033] Among the full-spectrum phosphors, cyan phosphor: green phosphor: red phosphor: 1:1.3:0.3, mixed evenly with the above-mentioned glass powder at a mass ratio of 0.1:1, and sintered in a muffle furnace at a sintering temperature of 600°C. The sintering time is 30 minutes, and then annealing is started at the glass transition temperature Tg temperature, and the temperature is lowered to 20°C at a cooling rate of 5-10°C / hour to obtain a full-spectrum borosili...

Embodiment 2

[0036]According to the mole percentage of each raw material in the full-spectrum borosilicate fluorescent glass, it is fully mixed according to the proportion of 10% Na2O, 20% ZnO, 30% B2O3, 20% SiO, and 20% MgO, Mix the raw materials evenly and melt them. The melting temperature is 1000°C, and keep warm for 1 hour to obtain molten glass; pour the molten glass into cold water, and perform water quenching to cool down to obtain transparent matrix glass; grind the glass into powder and pass through a 200-mesh sieve .

[0037] The molar percentage of each component of the full-spectrum phosphor is: cyan phosphor: green phosphor: red phosphor: 1:1.6:0.3, mixed with the above-mentioned glass powder in a mass ratio of 0.1:1, and sintered in a muffle furnace , the sintering temperature is 600°C, the sintering time is 30min, and then annealing is started at the glass transition temperature Tg temperature, the temperature is lowered to 20°C, and the cooling rate is 5-10°C / hour, and a f...

Embodiment 3

[0040] According to the mole percentage of each raw material in the full-spectrum borosilicate fluorescent glass, it is fully mixed according to the proportion of 10% Na2O, 20% ZnO, 30% B2O3, 20% SiO, and 20% MgO, Mix the raw materials evenly and melt them. The melting temperature is 1000°C, and keep warm for 1 hour to obtain molten glass; pour the molten glass into cold water, and perform water quenching to cool down to obtain transparent matrix glass; grind the glass into powder and pass through a 200-mesh sieve .

[0041] The molar percentage of each component of the full-spectrum phosphor is: cyan phosphor: green phosphor: red phosphor: 1.5: 1.3: 0.3, and the above glass powder is uniformly mixed in a mass ratio of 0.1:1, and sintered in a muffle furnace , the sintering temperature is 600°C, the sintering time is 30min, and then annealing is started at the glass transition temperature Tg temperature, the temperature is lowered to 20°C, and the cooling rate is 5-10°C / hour, ...

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Abstract

The invention relates to the field of white-light LED luminescent materials, in particular to full-spectrum borosilicate fluorescent glass and a preparation method thereof, the full-spectrum borosilicate fluorescent glass comprises matrix glass and full-spectrum fluorescent powder, and the matrix glass is prepared from raw materials of Na2O, ZnO, B2O3, SiO2 and CaO components; the matrix glass comprises the following components in percentage by mass: 10 to 15% of Na2O, 20 to 35% of ZnO, 20 to 50% of B2O3, 0 to 20% of SiO2 and 0 to 20% of CaO. The full spectrum fluorescent powder comprises thefollowing components: cyan fluorescent powder with an emission peak of 480-500 nm under blue excitation, green fluorescent powder with an emission peak of 520-540 nm under blue excitation, and red fluorescent powder with an emission peak of 615-640 nm under blue excitation, wherein the mol percentage of each component of the full spectrum fluorescent powder is: cyan fluorescent powder: green fluorescent powder: red fluorescent powder = 1-1.5: 1.3-1.6: 0.3-0.7. The preparation method of the luminescent glass ceramic designed by the invention ensure the success rate of full-spectrum fluorescentglass preparation, saves cost and is beneficial to the requirements of industrial production.

Description

technical field [0001] The invention relates to the field of white light LED luminescent materials, in particular to a full-spectrum borosilicate fluorescent glass and a preparation method thereof. Background technique [0002] At present, solid-state lighting is widely respected because of its low pollution, resource saving and long life. The most widely used in the market is white LEDs packaged with blue chips and YAG:Ce phosphors. However, in YAG:Ce phosphor, the spectral energy of red light accounts for about 8-15% of the total spectral energy, which is much lower than that of yellow-green light. Therefore, the color rendering index of products manufactured by this method is relatively low, and the color temperature is relatively high, basically above 5500K, and there is a certain deviation from the best visual requirements of the human eye (3000~5000K), so it cannot be used for home lighting. In addition, in order to achieve the goal of full spectrum, adjustable color ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C14/00C03C4/12C03C6/04
CPCC03C14/004C03C4/12C03C1/00
Inventor 邹军石明明
Owner NINGBO LONGER LIGHTING
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