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Far-infrared type fluorescent glass ceramic, preparation method thereof and lamp for plants

A technology of fluorescent glass and red phosphor, which is applied in the field of plant lights, achieves excellent thermal stability, simple and fast control process, and good plant lighting effects

Active Publication Date: 2018-07-24
成都本农农业咨询合伙企业(有限合伙)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, some phosphors (such as YAG:Ce 3+ 、CaAlSiN 3 :Eu 2+ etc.) have been successfully combined with glass-ceramic materials for high-power lighting devices, but there are few reports on high-power plant lighting

Method used

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  • Far-infrared type fluorescent glass ceramic, preparation method thereof and lamp for plants
  • Far-infrared type fluorescent glass ceramic, preparation method thereof and lamp for plants
  • Far-infrared type fluorescent glass ceramic, preparation method thereof and lamp for plants

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preparation example Construction

[0048] The red fluorescent powder of the present invention is prepared by the following method: Weigh zinc oxide powder, gallium trioxide powder and chromium trioxide powder according to the structural formula, mix the above-mentioned raw materials after weighing, place the temperature in a high-temperature box furnace to 1100-1600°C and keep warm for 3-8 hours, take out after natural cooling, and then crush to obtain red phosphor.

[0049] Preferably, the red fluorescent powder is prepared by the following method: weighing zinc oxide powder, gallium trioxide powder and chromium trioxide powder according to the structural formula, mixing the above-mentioned raw materials after weighing, and placing them in a high-temperature box furnace Raise the temperature to 1500°C and keep it warm for 6 hours, take it out after natural cooling, and then crush it to obtain red phosphor

[0050] The raw materials for preparing silicate glass powder in the present invention include silicon di...

Embodiment 1

[0065] Weigh the red fluorescent powder and silicate glass powder at a mass ratio of 5:95, mix them evenly in agate agate, then take 0.5g of the mixture in a mold, press it into a sheet at 30MPa, and then place it in a high-temperature box-type resistor In the furnace, the temperature was raised to 680 °C at 5 °C / min, and then kept for 0.5 h. After the reaction, the furnace was cooled to room temperature. After cutting, grinding and polishing, a far-red fluorescent glass ceramic with a thickness of 0.5 mm was obtained.

[0066] The far-red fluorescent glass ceramic is fixed on the high-power blue LED chip to obtain the LED plant lamp.

Embodiment 2

[0068] Weigh the red fluorescent powder and silicate glass powder at a mass ratio of 10:90, mix them evenly in agate agate, then take 0.5g of the mixture in a mold, press it into a sheet at 30MPa, and then place it in a high-temperature box-type resistor In the furnace, the temperature was raised to 680 °C at 5 °C / min, and then kept for 0.5 h. After the reaction, the furnace was cooled to room temperature. After cutting, grinding and polishing, a far-red fluorescent glass ceramic with a thickness of 0.5 mm was obtained.

[0069] The far-red fluorescent glass ceramic is fixed on the high-power blue LED chip to obtain the LED plant lamp.

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Abstract

The invention belongs to the field of inorganic luminescent materials, and particularly relates to a far-infrared type fluorescent glass ceramic, a preparation method thereof and a lamp for plants. The far-infrared type fluorescent glass ceramic is prepared from red fluorescent powder and silicate glass powder, and the mass ratio of the red fluorescent powder to the silicate glass powder is (5 to30) to (70 to 95); the structural formula of the red fluorescent powder is ZnGa[2-x]O[4]:xCr<3+>, wherein x is greater than 0.002 and less than 0.0016. The preparation method is as follows: the red fluorescent powder and the glass powder are weighed according to a mass ratio and uniformly mixed in an agate mortar, the mixture is then pressed into a sheet in a die, afterwards, the sheet is heated to react, and is cooled after reaction is completed, and after cutting, grinding and polishing, the far-infrared type fluorescent glass ceramic is obtained. The far-infrared type fluorescent glass ceramic disclosed by the invention has higher heat conductivity and appropriate excitation wavelength, the red light wavelength emitted by the far-infrared type fluorescent glass ceramic is between 650nmand 780nm, the far-infrared type fluorescent glass ceramic and blue light LED (light-emitting diode) chips can be assembled to form the lamp for plants, luminous energy absorbed by far-infrared type phytochrome which is more than luminous energy provided by conventional lamps for plants is provided, and the plant illumination effect is better and closer to the demand of plant growth.

Description

technical field [0001] The invention belongs to the field of inorganic luminescent materials, and in particular relates to a far-red fluorescent glass ceramic, a preparation method thereof and a plant lamp comprising the same. Background technique [0002] For a long time, artificial plant light sources have played a vital role in the development of plant factories. In particular, in order to match the absorption range of plant photosynthesis, red and blue composite LED light sources are the focus of research. However, the red and blue composite LED light sources currently on the market are mainly composed of blue light with a wavelength of 460nm and red light with a wavelength of 660nm. Although the blue light part can meet the needs of plant growth, part of the red light is slightly lacking. This is because there are two types of phytochromes in photosynthesis, deep red phytochromes and far red phytochromes. Among them, the maximum red light absorption wavelength of the ...

Claims

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Application Information

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IPC IPC(8): C03C14/00C03C4/12C03C6/04C03B19/06A01G7/04F21K9/64F21V9/32F21Y115/10
CPCA01G7/045C03B19/063C03C1/00C03C4/12C03C14/006F21K9/64F21Y2115/10Y02P60/14
Inventor 雷炳富李明才张浩然刘应亮张学杰
Owner 成都本农农业咨询合伙企业(有限合伙)
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