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Light conversion film and preparation method thereof

The technology of a light-converting film and a light-converting agent is applied in the field of light-converting film and its preparation, which can solve the problems of low solar light absorption and conversion efficiency, inability to be widely used, and poor light transmittance of the film, and achieve great economic value. and practical significance, improve the effect of light conversion, and enhance the effect of antioxidant properties

Active Publication Date: 2016-01-13
FOSHAN ONMILLION NANO MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the main emission peak of organic complex light conversion agents is generally around 610nm, which has a large gap with the absorption spectrum range of 400-480nm and 620-690nm of plants. The absorption and conversion efficiency of sunlight is not high, and the matching is poor. Defects such as short service life and poor light transmittance of film making
Inorganic light-transforming agents mainly include CaS:Eu,Sm, magnesium fluorogermanate:manganese, CaAlSiN3:Eu, etc. The matrix material of the light-changing agent CaS:Eu,Sm is sulfide, and sulfide is easy to deliquescence in the air, and the light easy to oxidize, poor stability
Magnesium fluorogermanate: the preparation cost of manganese and CaAlSiN3:Eu is relatively high, beyond the price range that the market can bear, and cannot be widely used
[0004] More importantly, whether it is an organic complex or an inorganic light conversion agent, it only absorbs a single spectral band in ultraviolet light or blue-green light and converts it into red light, which has a single function and low light utilization efficiency.

Method used

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  • Light conversion film and preparation method thereof
  • Light conversion film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] According to the chemical formula ratio, weigh 44.99KgCaCO 3 , 91.56KgAl 2 o 3 , 1.78KgMnCO 3 、0.25KgSm 2 o 3 , 30.5KgNH 4 F. First, CaCO3 and Al2O3 are pulverized, and then combined with Sm 2 o 3 , MnCO 3 and NH 4 F is fully mixed, and the above mixture is put into a container to be reacted; the reaction container is placed in a muffle furnace at 1500 ° C for 4 hours, and then cooled to room temperature; , to obtain the light conversion agent CaO·2Al 2 o 3 : Mn, Sm. Such as figure 1 SEM for light-transforming agents.

[0039] Experiments show that the light conversion agent CaO·2Al 2 o 3 : Mn, Sm can absorb the spectral bands with a wavelength range of 220-410nm and 440-620nm and convert them into red light with a wavelength range of 620-690nm.

Embodiment 2

[0041] According to the chemical formula ratio, weigh 44.99KgCaCO3, 54.18KgSrCO3, 183.12KgAl2O3, 2.56KgMnCO 3 , 0.12KgEu 2 o 3 , 50.80KgLi 2 CO 3 . CaCO 3 , SrCO 3 、Al 2 o 3 pulverized, and then mixed with MnCO 3 、Eu 2o 3 and Li 2 CO 3 Mix thoroughly, put the above mixture into a container and wait for reaction; place the reaction container in a muffle furnace at 1450°C for 6 hours, and then cool to room temperature; the cooled mixture is subjected to jet crushing treatment, and after sieving, Obtain light converting agent CaO·SrO·4Al 2 o 3 : Mn, Eu.

[0042] Experiments show that the light conversion agent CaO SrO 4Al 2 o 3 : Mn, Eu can absorb the spectral bands in the wavelength range of 220-410nm and 440-620nm and convert them into red light in the wavelength range of 620-690nm.

Embodiment 3

[0044] According to the chemical formula ratio, weigh 44.99KgZnO, 21.19KgMgO, 228.89KgAl respectively 2 o 3 , 3.28KgMnCO 3 , 0.53KgCuO, 30.00KgMgF 2 , 11KgH 3 BO 3 . ZnO, MgO, Al 2 o 3 Carry out pulverization treatment, and then combine with CuO, MnCO 3 , MgF 2 and H 3 BO 3 Mix well, put the above mixture into a container to be reacted; place the reaction container in a muffle furnace at 1550°C for 3 hours, and then cool it to room temperature; carry out jet milling on the cooled mixture, and sieve it to obtain Light converting agent ZnO·MgO·5Al 2 o 3 : Mn, Cu.

[0045] Experiments show that the light conversion agent CaO SrO 4Al 2 o 3 : Mn, Eu can absorb the spectral bands in the wavelength range of 220-410nm and 440-620nm and convert them into red light in the wavelength range of 620-690nm.

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Abstract

The invention discloses a light conversion film and a preparation method thereof. The light conversion film comprises a light conversion agent and light conversion agent carriers. The light conversion agent has a general formula of MO.xAl2O3: Mn, TM, and in the general formula, x is greater than or equal to 1 and less than or equal to 10, M represents one or more of Ca, Sr, Mg, Zn and Ba and TM represents one or more of Eu, Sm, Ce, Tb, Y, Gd, La, Pr, Cu, Cl and Li. The preparation method of the light conversion film utilizes the light conversion agent which is synthesized by a simple synthesis technology, comprises uniformly dispersed ingredients, has a cost greatly lower than that of the traditional light conversion agent, good stability and an emission spectrum matching with a plant photosynthesis spectrum, improves absorption and conversion efficiency of sunlight and improves a matching degree.

Description

technical field [0001] The invention relates to a light conversion film and a preparation method thereof. Background technique [0002] The light conversion film is a film that realizes light conversion by adding a light conversion agent. It can convert ultraviolet light that is harmful to plant growth into blue-violet and red-orange light that is useful to crops, or convert green and red light that plants do not absorb. The yellow-green light is converted into red light. That is, by changing the light quality that passes through the light conversion film, it can promote the absorption of nitrogen, phosphorus, potassium, zinc and other nutrients by plants, increase the content of photosynthesis products in leaves, promote crop growth, and at the same time play a role in reducing pests and diseases . [0003] After nearly 20 years of rapid development, the light-changing agent has developed into two systems: organic complex light-changing agent and inorganic light-changing ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L25/06C08L23/12C08L23/06C08L77/00C08L63/00C08L27/06C08L71/08C08K3/22C08K3/08C08K3/26C08K3/00C08J3/22B29C49/78
Inventor 胡广齐方利浮陈焰
Owner FOSHAN ONMILLION NANO MATERIALS