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Agricultural thin film and production method thereof

An agricultural film and a manufacturing method technology, applied in the field of agricultural materials, can solve the problems of decomposition and deterioration of the light conversion agent, uneven dispersion, narrow light conversion spectrum, etc., and achieve the effects of not easy to agglomerate, high luminous intensity, and enhanced photosynthesis

Active Publication Date: 2016-02-10
无锡凯顺塑膜制造有限公司
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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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  • Agricultural thin film and production method thereof
  • Agricultural thin film and production method thereof
  • Agricultural thin film and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0018] (1) Add 1.2mmolNa 3 VO 4 12H 2 O was dissolved in a mixed solution containing 5ml ethylene glycol and 2ml distilled water; (2) The above solution was ultrasonically stirred (80KHz ultrasonic vibration and 300r / min centrifugal speed stirring) and added dropwise with a certain proportion of 1.5mmol Y ( NO 3 ) 3 ·6H 2 O,Eu(NO 3 ) 3 ,Sr(NO 3 ) 2 (0.9:0.03:0.07) in 8ml of ethylene glycol solution, then ultrasonically stirred (80KHz ultrasonic vibration and 300r / min centrifugal speed stirring) for 10min until the solution was clear, then added 20ml of distilled water; (3) Pour the reaction solution into a volume of 50ml In a polytetrafluoroethylene-lined autoclave, in a vacuum environment, 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 3...

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 an agricultural thin film which comprises matrix resin, an anti-aging agent, a red light fluorescent composition, and NaYF4:Yb<3+>,Er<3+> fluorescent powder, wherein the weights of the anti-aging agent and the red light fluorescent composition respectively account for 0.2-0.5% and 0.01-0.05% of that of the matrix resin; the red light fluorescent composition is a YVO4:Eu<3+>,Sr<2+>@YVO4:Eu<3+>,Bi<3+> red light fluorescent composition or a YVO4:Eu<3+>,Sr<2+>@YVO4:Eu<3+>,Bi<3+>@Ag@SiO2 red light fluorescent composition. The invention further discloses a production method of the agricultural thin film. According to the red light fluorescent composition, the red light fluorescent composition and the NaYF4:Yb<3+>,Er<3+> fluorescent powder are added into the agricultural thin film, so that the agricultural thin film has photo-conversion 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 dispersity, can be applied to the agricultural thin film, and is low in agglomeration possibility.

Description

technical field [0001] The invention relates to the field of agricultural materials, in particular to an 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 has become an impo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L101/00C08K9/02C08K3/22C08K3/16
Inventor 严梅霞
Owner 无锡凯顺塑膜制造有限公司
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