Preparing method of remote fluorescent sheet based on low-melting-point borosilicate glass powder

A borosilicate glass, low melting point technology, applied in the field of materials science, can solve the problems of uneven coating of phosphor powder, organic glue aging, yellowing, etc., and achieve the effects of high practical value, not easy to fall off, and low cost.

Active Publication Date: 2018-04-10
SHANGHAI INSTITUTE OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the above-mentioned technical problems in the prior art, the present invention provides a method for preparing a remote fluorescent sheet based on low-melting borosilicate glass powder, said remote fluorescent film based on low-melting borosilicate glass powder The film needs to solve technical problems such as uneven phosphor coating, organic glue aging and yellowing in the prior art

Method used

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  • Preparing method of remote fluorescent sheet based on low-melting-point borosilicate glass powder
  • Preparing method of remote fluorescent sheet based on low-melting-point borosilicate glass powder
  • Preparing method of remote fluorescent sheet based on low-melting-point borosilicate glass powder

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Effect test

Embodiment 1

[0023] 1) The SiO that will be weighed 2 , B 2 o 3 , ZnO, Na 2 CO 3 The mass percentages of the raw materials are: 15%, 44%, 21%, and 20%, and they are mixed evenly, and the glass block is prepared by melting method, and ground into a powder with a particle size of 5-13 μm;

[0024] 2) Weigh glass powder and fluorescent powder with a mass fraction ratio of 20 and 5 parts, disperse the powder in an organic matter with a mass fraction ratio of 45 parts, and uniformly mix to form a fluorescent glass slurry;

[0025] 3) The fluorescent glass slurry obtained in 2) is coated on an ultra-clear glass plate with a scraper coating technique;

[0026] 4) Fully sinter the fluorescent glass layer prepared in 3) at 180°C-300°C to completely volatilize organic matter, and then sinter at 600°C-700°C for 5-30 minutes at a low temperature to obtain the remote fluorescent glass sheet.

[0027] Depend on figure 2 It can be seen that under the excitation wavelength of 460nm, the fluorescent...

Embodiment 2

[0029] 1) The SiO that will be weighed 2 , B 2 o 3 , ZnO, Na 2 CO 3 The mass percentages of the raw materials are respectively: 18.5%, 45%, 20.5%, 16%, mixed uniformly, prepared glass blocks by melting method, and ground into powders with a particle size of 5-13 μm;

[0030] 2) Weighing 32 parts by mass and 6 parts by mass of glass powder and fluorescent powder, dispersing the powder in organic matter with 52 parts by mass, and uniformly mixing them to form a fluorescent glass slurry;

[0031] 3) The fluorescent glass slurry obtained in 2) is coated on an ultra-clear glass plate with a spin-coating technique;

[0032] 4) Fully sinter the fluorescent glass layer prepared in 3) at 180°C-300°C to completely volatilize organic matter, and then sinter at 600°C-700°C for 5-30 minutes at a low temperature to obtain the remote fluorescent glass sheet.

Embodiment 3

[0034] 1) The SiO that will be weighed 2 , B 2 o 3 , ZnO, Na 2 CO 3 The mass percentages of the raw materials are respectively: 20.5%, 44.8%, 21.2%, 13.5%, mixed uniformly, prepared glass blocks by melting method, and ground into powders with a particle size of 5-13 μm;

[0035] 2) Weighing 48 parts by mass and 9 parts by mass of glass powder and fluorescent powder, dispersing the powders in 67 parts by mass of organic matter, and uniformly mixing them to form a fluorescent glass slurry;

[0036] 3) The fluorescent glass paste obtained in 2) is coated on an ultra-clear glass plate with a screen printing technique;

[0037] 4) Fully sinter the fluorescent glass layer prepared in 3) at 180°C to 300°C to completely volatilize the organic matter, and then sinter at 600°C to 700°C for 5 to 30 minutes at a low temperature to obtain the remote fluorescent glass sheet

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Abstract

The invention provides low-melting-point borosilicate glass powder. The glass powder is prepared from, by mass, 10-22% of SiO2, 37-45% of B2O3, 14-22% of ZnO and 13-20% of Na2CO3. The invention further provides a remote fluorescent sheet based on the low-melting-point borosilicate glass powder. A preparing method comprises the steps of preparing the low-melting-point borosilicate glass powder; preparing fluorescent glass slurry, wherein the glass powder and fluorescent powder are mixed and are then dispersed into organic matter, and the materials are uniformly mixed into the fluorescent glassslurry; preparing the fluorescent glass sheet, wherein firstly a scraping / spinning / silk-screen printing technology is utilized to coat a super white glass plate with the fluorescent glass slurry to form a layer of uniform fluorescent glass coating, and then sintering and cooling are conducted under low temperature to obtain the fluorescent glass sheet. The chemical performance and optical performance of the fluorescent glass sheet prepared according to the method are good, and the fluorescent glass sheet can be applied to the fields of semiconductor illumination and laser illumination.

Description

technical field [0001] The invention belongs to the field of material science, and relates to a luminescent material, in particular to a method for preparing a remote fluorescent sheet based on low melting point borosilicate glass powder. Background technique [0002] As a lighting source, LED lighting has the advantages of small size, fast response, safe low voltage, good weather resistance, good directionality, etc. It is widely used in oil fields, petrochemicals, railways, mines, military and other special industries and special work lamps. prospect. At present, the commonly used packaging method for commercial white light LEDs is to directly contact the phosphor powder with the blue light chip by spot coating, which has a great hindrance to heat dissipation, and high-power LEDs work for a long time. Reduce, reduce LED luminous efficiency. In addition, it is difficult to effectively control the thickness and shape of the phosphor powder by the spot coating method, which...

Claims

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Application Information

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IPC IPC(8): C03C17/04C03C4/12C03C12/00C03C3/066H01L33/50
CPCC03C3/066C03C4/12C03C12/00C03C17/04C03C2218/114C03C2218/116C03C2218/119H01L33/501H01L33/505H01L33/507H01L2933/0041
Inventor 赵国营徐玲芝金文田陈雪筠莫月平孟少华张蔓琳房永征刘玉峰侯京山
Owner SHANGHAI INSTITUTE OF TECHNOLOGY
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