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A kind of agricultural film and its manufacturing method

An agricultural film and manufacturing method technology, which is applied in the field of agricultural materials, can solve the problems of light conversion agent decomposition and deterioration, low light conversion efficiency, uneven dispersion, etc., and achieve the effects of not being easy to agglomerate, high luminous intensity, and reducing pests and diseases

Active Publication Date: 2017-08-18
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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  • A kind of agricultural film and its manufacturing method
  • A kind of agricultural film and its manufacturing method
  • A kind of 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 an agricultural film, which comprises a base resin, an anti-aging agent accounting for 0.2-0.5% of the weight of the base resin, a red fluorescent composition accounting for 0.01-0.05% of the weight of the base resin, and accounting for 0.01-0.05% of the weight of the base resin. NaYF4:Yb3+, Er3+ fluorescent powder, the red fluorescent composition is YVO4:Eu3+, Sr2+@YVO4:Eu3+, Bi3+ or YVO4:Eu3+, Sr2+@YVO4:Eu3+, Bi3+@Ag@SiO2 red fluorescent composition. The invention also discloses a method for manufacturing the agricultural film. The red light fluorescent composition adds the red light fluorescent composition and NaYF4:Yb3+, Er3+ fluorescent powder to the agricultural film, so that the agricultural film has a light conversion property, and the red light component in the sunlight in the shed is enhanced, and photosynthesis is strengthened. Crops mature early and increase production. In addition, due to its wide absorption of ultraviolet spectrum, the ultraviolet light component in the sunlight in the shed is reduced, and some mold diseases and aphid diseases that rely on ultraviolet light for survival are inhibited, thereby reducing pests and diseases; the red fluorescent composition has better Dispersion, applied to agricultural film, not easy to cause agglomeration.

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 Patents(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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