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A kind of full-spectrum borosilicate fluorescent glass and its preparation method

A technology of fluorescent glass and borosilicate, which is applied in the field of full-spectrum borosilicate fluorescent glass and its preparation, can solve the problems of easy reaction, no full-spectrum fluorescent glass, and difficult incorporation of red fluorescent powder, etc. Simplicity, expanded variety and application range, and the effect of high thermal conductivity

Active Publication Date: 2022-05-13
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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  • A kind of full-spectrum borosilicate fluorescent glass and its preparation method
  • A kind of full-spectrum borosilicate fluorescent glass and its preparation method

Examples

Experimental program
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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 a full-spectrum borosilicate fluorescent glass and a preparation method thereof, comprising a matrix glass and a full-spectrum fluorescent powder, and the matrix glass is made of Na 2 O, ZnO, B 2 o 3 , SiO 2 and CaO components; the mass mole fraction of each component of the matrix glass is: Na 2 O: 10‑15%, ZnO: 20‑35%, B 2 o 3 : 20‑50%, SiO2: 0‑20%, CaO: 0‑20%; the full-spectrum phosphor is composed of the following components: a cyan phosphor with an emission peak at 480‑500nm under blue light excitation; Green fluorescent powder with an emission peak at 520-540nm, and a red fluorescent powder with an emission peak at 615-640nm under excitation by blue light. The molar percentages of the components of the full-spectrum fluorescent powder are: cyan phosphor: green phosphor: red Optical phosphor = 1~1.5: 1.3~1.6: 0.3~0.7.

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 Patents(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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