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Fluorescent powder capable of promoting plant growth, preparation thereof and light conversion film prepared from fluorescent powder

A technology that promotes plant growth and phosphor, applied in the field of light-transfer film, can solve the problems of increasing planting costs and energy consumption, complicated LED chip technology, and difficulty in large-scale application, and achieves improved light energy conversion efficiency, cheap source channels, The effect of low equipment requirements

Pending Publication Date: 2020-05-29
LANZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the spectrum of LED plant lamps currently on the market has a low matching with the absorption spectrum required for plant photosynthesis, and the utilization rate of light energy is still low, which is not suitable for plant growth; on the other hand, the LED chip itself has a complex process. The cost is high, and it needs to be powered on for a long time, which indirectly increases the cost of planting and energy consumption, making it difficult to apply on a large scale

Method used

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  • Fluorescent powder capable of promoting plant growth, preparation thereof and light conversion film prepared from fluorescent powder
  • Fluorescent powder capable of promoting plant growth, preparation thereof and light conversion film prepared from fluorescent powder
  • Fluorescent powder capable of promoting plant growth, preparation thereof and light conversion film prepared from fluorescent powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] According to SrMgAl 9.95 o 17 :0.05Cr 3+ The stoichiometric ratio of the molecular formula, respectively weighed SrCO 3 , MgO, Al 2 o 3 and Cr 2 o 3 , mixed to get the material, then add H with a quality of 2% of the material quality 3 BO 3 , mix well to form a mixture, after fully grinding evenly, put it into an alumina crucible, place it in a tube furnace with a temperature of 1450°C and calcinate for 6 hours under a nitrogen atmosphere, cool to room temperature with the furnace, and grind to obtain SrMgAl 9.95 o 17 :0.05Cr 3+ powder.

[0036] According to the mass ratio of 100:15, the obtained SrMgAl 9.95 o 17 :0.05Cr 3+ Powder and Commercial Yellow Phosphor Y (3-y） Al 5 o 12 :yCe 3+ , mixed in an agate mortar, and fully ground until the powder color is uniform, to obtain a mixed fluorescent powder.

[0037]According to the mass ratio of 1:1, take the two components in the epoxy resin AB glue and mix them to get the mixed glue, then add the mixed fl...

Embodiment 2

[0053] According to SrMgAl 9.95 o 17 :0.05Cr 3+ The stoichiometric ratio of the molecular formula, respectively weighed Sr(NO 3 ) 2 , MgSO 4 , Al(NO 3 ) 3 and Cr 2 o 3 , mixed to get the material, and then add H with a mass of 1% of the mass of the material 3 BO 3 , mix well to form a mixture, after fully grinding evenly, put it into an alumina crucible, place it in a tube furnace with a temperature of 1400°C and calcinate it under a nitrogen atmosphere for 8 hours, cool to room temperature with the furnace, and grind to obtain SrMgAl 9.95 o 17 :0.05Cr 3+ powder.

[0054] According to the mass ratio of 100:10, the obtained SrMgAl 9.95 o 17 :0.05Cr 3+ Powder and Commercial Yellow Phosphor Y (3-y） al 5 o 12 :yCe 3+ , mixed in an agate mortar, and fully ground until the powder color is uniform, to obtain a mixed fluorescent powder.

[0055] According to the mass ratio of 1:0.8, take the two components in the epoxy resin AB glue and mix them to obtain the mixed...

Embodiment 3

[0057] According to SrMgAl 9.95 o 17 :0.05Cr 3+ The stoichiometric ratio of the molecular formula, respectively weighed Sr(NO 3 ) 2 , MgCO 3 , Al(NO 3 ) 3 and Cr 2 (SO 4 ) 3 , mixed to obtain the material, and then adding H with a quality of 1.5% of the material 3 BO 3 , mix well to form a mixture, after fully grinding evenly, put it into an alumina crucible, place it in a tube furnace at a temperature of 1500°C, and calcinate it under a nitrogen atmosphere for 4 hours, cool to room temperature with the furnace, and grind to obtain SrMgAl 9.95 o 17 :0.05Cr 3+ powder.

[0058] According to the mass ratio of 100:20, the obtained SrMgAl 9.95 o 17 :0.05Cr 3+ Powder and Commercial Yellow Phosphor Y (3-y） al5 o 12 :yCe 3+ , mixed in an agate mortar, and fully ground until the powder color is uniform, to obtain a mixed fluorescent powder.

[0059] According to the mass ratio of 1:1.2, take the two components in the epoxy resin AB glue and mix them to get the mixed...

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Abstract

The invention discloses fluorescent powder capable of promoting plant growth, preparation of the fluorescent powder and a light conversion film prepared from the fluorescent powder. The fluorescent powder is formed by mixing SrMgAl10O17: Cr<3+> powder and commercial yellow fluorescent powder Y(3-y)Al5O12: yCe<3+>. The preparation method comprises the following steps: mixing the raw materials, adding a fluxing agent to form a mixture, fully grinding the mixture, calcining the ground mixture at high temperature in a nitrogen atmosphere, cooling to room temperature along with a furnace, and carrying out grinding to obtain SrMgAl9.95O17: 0.05 Cr<3+> powder; and mixing the powder with commercial yellow-light fluorescent powder and uniformly grinding the mixed powder to obtain the fluorescent powder capable of promoting plant growth. The two components in the epoxy resin AB glue are uniformly mixed, the fluorescent powder capable of promoting plant growth is added, uniform stirring is carried out, and the obtained substance is applied to a glass mold and dried at constant temperature to obtain the light conversion film capable of promoting plant growth. The light conversion film can effectively convert sunlight into red light capable of being efficiently absorbed by plants, plant photosynthesis can be enhanced, and plant growth is promoted.

Description

technical field [0001] The invention belongs to the technical field of luminescent materials, and relates to a fluorescent powder that can promote plant growth and a preparation method thereof. The invention also relates to a light conversion film prepared by using the fluorescent powder that can emit red light after being irradiated with ultraviolet light or visible light . Background technique [0002] Light is one of the main sources for the growth and development of plants. Through photosynthesis, plants can produce carbohydrates as the basic nutrients for their growth. Studies have shown that when irradiated by blue-violet light with a wavelength of 380-500nm and red-orange light with a wavelength of 610-720nm, the photosynthesis efficiency of chlorophyll in plants is the highest, while light in other bands is rarely absorbed, contributing to photosynthesis. lower. Therefore, the utilization rate of the total solar radiation by plants is not high. If this utilization ...

Claims

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Application Information

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IPC IPC(8): C09K11/80C09K11/68C08J5/18C08L63/00C08K3/22A01G7/00
CPCA01G7/00C08J5/18C08J2363/00C08K3/22C09K11/685C09K11/7774
Inventor 王育华濑户孝俊李俊毅
Owner LANZHOU UNIVERSITY
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