Fluorescent powder/silicon-based mesoporous material composite fluorescent glass and preparation method thereof

A silicon-based mesoporous material and luminescent glass technology, applied in glass manufacturing equipment, glass molding, manufacturing tools, etc., can solve the problems of high energy consumption, high melting temperature, and long melting time, and achieve good thermal conductivity and preparation Simple process and good anti-aging performance

Inactive Publication Date: 2013-06-19
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, high-temperature melting or secondary sintering methods are mostly used to prepare glass for white light LEDs. These methods have disadvantages such as high melting temperature, long melting time, and high energy consumption.

Method used

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  • Fluorescent powder/silicon-based mesoporous material composite fluorescent glass and preparation method thereof
  • Fluorescent powder/silicon-based mesoporous material composite fluorescent glass and preparation method thereof
  • Fluorescent powder/silicon-based mesoporous material composite fluorescent glass and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] According to YAG:Ce 3+ The molar percentage of MCM-41 powder is 3%: 97% and weigh YAG:Ce 3+ and MCM-41 powder, and then put the two into a ball mill tank for wet ball milling for 12 hours. Alcohol should be added during the ball milling process to ensure uniform mixing. After ball milling, put the powder into the drying box to dry. After drying, put the powder into graphite mold and put it into SPS equipment for sintering. SPS sintering is carried out under vacuum conditions, the pressure applied during the sintering process is 50MPa; the heating rate during sintering is 50°C / min; the sintering temperature is 1150°C; the holding time is 5min. After the sintering is completed, turn off the power of the instrument, and cool down to room temperature with the furnace. After the sample is taken out, the luminescent glass block is obtained through grinding, polishing and other processes.

[0027] Carry out XRD test to the prepared luminous glass, the result obtained is as...

Embodiment 2

[0029] According to YAG:Ce 3+ The molar percentage of mesoporous SBA-15 powder is 0.4%: 99.6% and weigh YAG:Ce 3+ and SBA-15 powder, and then put the two into a ball mill tank for wet ball milling for 12 hours. Alcohol should be added during the ball milling process to ensure uniform mixing. After ball milling, put the powder into the drying box to dry. After drying, put the powder into graphite mold and put it into SPS equipment for sintering. SPS sintering is carried out under vacuum conditions, and the pressure applied during the sintering process is 50MPa. The heating rate during sintering is 80°C / min; the sintering temperature is 1080°C; the holding time is 2min. After the sintering is completed, turn off the power of the instrument, and cool down to room temperature with the furnace. After the sample is taken out, the luminescent glass block is obtained through grinding, polishing and other processes.

[0030] Excitation and emission spectrum tests were carried out ...

Embodiment 3

[0033] According to YAG:Ce 3+ And MCM-48 mole percentage is 0.5%: 99.5% ratio to weigh YAG: Ce 3+ and MCM-48 powder, and then put the two into a ball mill jar for wet ball milling for 8 hours. Alcohol should be added during the ball milling process to ensure uniform mixing. After ball milling, put the powder into the drying box to dry. After drying, put the powder into graphite mold and put it into SPS equipment for sintering. SPS sintering is carried out under vacuum conditions, the pressure applied during the sintering process is 75MPa; the heating rate during sintering is 90°C / min; the sintering temperature is 1050°C; the holding time is 3min. After the sintering is completed, turn off the power of the instrument, and cool down to room temperature with the furnace. After the sample is taken out, the luminescent glass block is obtained through grinding, polishing and other processes.

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Abstract

The invention relates to fluorescent powder / silicon-based mesoporous material composite fluorescent glass and a preparation method thereof. The fluorescent glass comprises the following raw materials in percentage by mol: 95-99.9% of silicon-based mesoporous material and 0.1-5% of fluorescent powder. The preparation method comprises the following steps: (1) weighing the raw materials, performing ball milling, mixing, and drying for later use; and (2) filling the powder after ball milling and drying into a graphite mold, placing in the chamber of a discharge plasma sintering furnace, sintering in vacuum, an inert atmosphere or a reducing atmosphere, then performing furnace cooling to room temperature, sanding, and polishing. In addition to the advantages of glass for the existing white light LED (light-emitting diode), the invention further ensures that the stability is more excellent in comparison with glass additionally containing alkali metal oxide, alkaline-earth metal oxide or other network modifier due to quartz glass used as the substrate material; and the preparation process is simple and low in cost, and has favorable application prospects.

Description

technical field [0001] The invention belongs to the field of luminescent glass and its preparation, and in particular relates to a luminescent glass made of fluorescent powder composite silicon-based mesoporous material and a preparation method thereof. Background technique [0002] The application of white light LED (light emitting diode) in the field of lighting is an inevitable trend of technological development. In the 1990s, the application field of LED expanded from the traditional application field such as indicator light and signal light to the field of display screen and white light lighting. As the global energy shortage becomes more and more serious, energy conservation and environmental protection become the theme of the world. White LEDs have attracted great attention from various countries due to their long service life, high efficiency, energy saving, and environmental protection. Japan, the United States, South Korea, and China have all issued national Level...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C11/00C03C4/12C03B19/06
Inventor 王连军顾士甲张延江悠王明辉朱娟娟
Owner DONGHUA UNIV
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