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A kind of high light energy agricultural film and its manufacturing method

An agricultural film and phosphor technology, applied in chemical instruments and methods, luminescent materials, etc., can solve the problems of decomposition and deterioration of light conversion agents, fast attenuation of light conversion, low light conversion efficiency, etc. , the effect of high luminous intensity

Inactive Publication Date: 2017-07-21
桂林桂强塑膜制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a light-changing agent for agricultural film, rare earth complexes are currently the most researched category, but the existing light-changing agent is added to polyolefin shed film, exposed to sunlight for a long time, and under the action of ultraviolet light, the luminous intensity decreases Soon, a certain chemical reaction will occur at the same time, which will decompose and deteriorate the light conversion agent. There are also disadvantages such as fast light conversion attenuation, low light conversion efficiency, narrow light conversion spectrum, uneven dispersion and easy agglomeration.

Method used

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  • A kind of high light energy agricultural film and its manufacturing method
  • A kind of high light energy agricultural film and its manufacturing method
  • A kind of high light energy agricultural film and its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1. Preparation of YVO 4 :Eu 3+ ,Sr 2+ Nano phosphor

[0018] (1) Add 1.2mmol Na 3 VO 4 12H 2 O was dissolved in a mixed solution containing 5ml of ethylene glycol and 2ml of distilled water; (2) While ultrasonically stirring the above solution (80KHz ultrasonic vibration and 300r / min centrifugal speed stirring), dropwise added 1.5mmol of a certain proportion of Y ( NO 3 ) 3 ·6H 2 O, Eu(NO 3 ) 3 , Sr(NO 3 ) 2 (0.9:0.03:0.07) in 8 ml of ethylene glycol solution, then ultrasonically stirred (80KHz ultrasonic vibration and 300r / min centrifugal speed stirring) for 10min until the solution was clear, and 20ml of distilled water was added; (3) Pour the reaction solution into a volume of In a 50 ml polytetrafluoroethylene-lined autoclave, under vacuum, 200 o C under heat preservation reaction 1h, down to 150 o C under insulation reaction 1h, after the end of the reaction, cooled to room temperature. The resulting suspension was poured out, centrifuged and washed ...

Embodiment 2

[0026] On the basis of embodiment 1, the YVO in the step 3 4 :Eu 3+ ,Sr 2+ with YVO 4 :Eu 3+ , Bi 3+ The weight ratio is changed to 1:0.5, and the rest are the same as in Example 1.

Embodiment 3

[0028] On the basis of embodiment 1, the YVO in the step 3 4 :Eu 3+ ,Sr 2+ with YVO 4 :Eu 3+ , Bi 3+ The weight ratio was changed to 1:0.001, and the rest were the same as in Example 1.

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Abstract

The invention discloses a high-light-energy agricultural thin film which comprises matrix resin, an anti-aging agent, and a red light fluorescent composition, wherein the red light fluorescent composition is the YVO4:Eu<3+>,Sr<2+>@YVO4:Eu<3+>,Bi<3+> red light fluorescent composition or the YVO4:Eu<3+>,Sr<2+>@YVO4:Eu<3+>,Bi<3+>@Ag@SiO2 red light fluorescent composition. The invention further discloses a method for producing the agricultural thin film. The red light fluorescent composition has relatively strong broadband absorption capability in the ultraviolet light area, has relatively high luminous intensity, and can further improve the photoconversion efficiency; the red light fluorescent composition is added into the agricultural thin film, so that the agricultural thin film has photoconversion performance, red light components of sunlight in a shed are enhanced, the photosynthesis is intensified, and precocity and yield increase of the crops are facilitated. Besides, the agricultural thin film absorbs broader ultraviolet spectrums, so that ultraviolet light components of sunlight in the shed are reduced, mycosis and aphid diseases surviving by relying on ultraviolet light are inhibited, and diseases and insect pests are reduced. The red light fluorescent composition has better dispersivity, can be applied to the agricultural thin film, and is low in possibility of causing agglomeration.

Description

technical field [0001] The invention relates to the field of agricultural materials, in particular to a high light energy agricultural film and a manufacturing method thereof. Background technique [0002] Agricultural plastic films are roughly divided into three categories according to their functions and development: (1) ordinary plastic agricultural films; (2) functional plastic agricultural films (including anti-aging, anti-fog, heat preservation, dust-proof, etc.); (3) control Functional plastic agricultural film (including spectral selection, spectral conversion, functional control, etc.). With the improvement of crop cultivation technology, ordinary agricultural plastic films are no longer suitable for the development of agricultural protective cultivation. In recent years, based on the principles of photoecology, the application of solar light energy conversion technology to agricultural films has been very active in the research of new light-converting films, and h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08L23/06C08L23/08C08K9/10C08K9/04C08K3/22C09K11/82
Inventor 严梅霞
Owner 桂林桂强塑膜制品有限公司
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