A kind of agricultural light conversion film with long service life and preparation method thereof

A light-converting film and long-life technology, which is applied in the fields of botanical equipment and methods, chemical instruments and methods, and applications, can solve the problems of accelerated aging of agricultural film, short fluorescent life, affecting the life of agricultural film, etc., so as to prolong the service life. , Effective plant growth, the effect of saving planting costs

Active Publication Date: 2019-12-06
FOSHAN ONMILLION NANO MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Rare earth organic complexes have good light conversion performance, but their fluorescence lifetime is short, the intensity decays quickly, the luminous intensity decreases significantly after long-term use, the cost is high, the compatibility with the polymer matrix is ​​not good, and the dispersion is poor; rare earth inorganic complexes The use of rare earth inorganic compounds is more extensive, but most of the rare earth inorganic compounds contain sulfur elements, their chemical properties are unstable, and they are easy to be hydrolyzed and photolyzed by moisture, which will accelerate the aging of agricultural films and affect the life of agricultural films.
In addition, aluminate light conversion agent is also a popular development in recent years, but it is also susceptible to moisture hydrolysis and photolysis, and its stability is poor

Method used

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  • A kind of agricultural light conversion film with long service life and preparation method thereof
  • A kind of agricultural light conversion film with long service life and preparation method thereof
  • A kind of agricultural light conversion film with long service life and preparation method thereof

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preparation example Construction

[0035] The preparation method of the above-mentioned agricultural light conversion film with long service life comprises the following steps:

[0036] 1) Prepare plastic layer premix and isolation layer premix respectively;

[0037] 2) Fully mix the matrix resin, light converting agent, lubricant, light stabilizer and antioxidant to obtain a light converting layer premix;

[0038] 3) Adding the plastic layer premix, isolation layer premix and light conversion layer premix into a co-extruder for multi-layer co-extrusion to obtain an agricultural light conversion film with a multi-layer structure.

Embodiment 1

[0041] Such as figure 1 As shown, a kind of agricultural light conversion film with long service life comprises the first protective layer 10, the light conversion layer 20 and the second protective layer 30; the first protective layer 10 is made up of plastic layer 101 and isolation layer 102, and the The material is polyethylene, the thickness is 20 μm, the material of the isolation layer 102 is nylon, the thickness is 10 μm; the light conversion layer 20 is composed of polyethylene, rare earth inorganic sulfide light conversion agent, lubricant, light stabilizer and antioxidant, and the thickness is The second protective layer 30 is composed of a plastic layer 301 and an isolation layer 302. The material of the plastic layer 301 is polyethylene with a thickness of 20 μm, and the material of the isolation layer 302 is nylon with a thickness of 10 μm; the total thickness of the light conversion film is 100 μm.

[0042] The absorption spectrum and emission spectrum of the agr...

Embodiment 2

[0044] Such as figure 1 As shown, a kind of agricultural light conversion film with long service life comprises the first protective layer 10, the light conversion layer 20 and the second protective layer 30; the first protective layer 10 is made up of plastic layer 101 and isolation layer 102, and the The material is nylon with a thickness of 5 μm, and the material of the isolation layer 102 is ethylene / vinyl alcohol copolymer with a thickness of 5 μm; the light conversion layer 20 is made of polypropylene, rare earth inorganic sulfide light conversion agent, lubricant, light stabilizer and antioxidant The second protective layer 30 is composed of a plastic layer 301 and an isolation layer 302, the material of the plastic layer 301 is nylon, and the thickness is 5 μm, and the material of the isolation layer 302 is CTC resin, and the thickness is 5 μm; light conversion film The total thickness is 30 μm.

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Abstract

A long-lasting light conversion film and a preparation method therefor. The light conversion film comprises a first protective layer, a light conversion layer arranged on the first protective layer, and a second protective layer arranged on the light conversion layer. The protective layers consist of at least one plastic layer and at least one isolation layer. The preparation method for the light conversion film is as follows: 1) respectively preparing a plastic layer premix and an isolation layer premix; 2) uniformly mixing a matrix resin, a light conversion agent, a lubricant, a light stabiliser and an antioxidant to obtain a light conversion layer premix; 3) adding the plastic layer premix, the isolation layer premix and the light conversion layer premix to a co-extruder, and performing multi-layer co-extrusion. The isolation layer in the light conversion film effectively blocks moisture and oxygen in the air, and prevents the light conversion agent in the light conversion layer from coming into contact with moisture and oxygen and breaking down, thereby increasing the stability of the light conversion agent, and significantly extending the service life of the light conversion film.

Description

technical field [0001] The invention relates to an agricultural light conversion film with long service life and a preparation method thereof, which belongs to the technical field of luminescent materials. Background technique [0002] Light-converting film is an emerging control-type functional agricultural film, which can convert ultraviolet light and yellow-green light in sunlight into long-wave light that is more beneficial to crop growth, thereby improving light energy utilization. A light conversion agent must be added to the light conversion film to realize the function of light conversion. The light converting agents currently on the market are mainly rare earth compounds, including rare earth inorganic complexes and rare earth organic complexes. Rare earth organic complexes have good light conversion performance, but their fluorescence lifetime is short, the intensity decays quickly, the luminous intensity decreases significantly after long-term use, the cost is hi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/08B32B27/18B32B27/32B32B27/34B32B27/30B32B25/08A01G13/02
CPCA01G13/0275B32B25/08B32B27/08B32B27/18B32B27/30B32B27/32B32B27/34B32B2307/7246B32B2551/00
Inventor 胡广齐李金芳梁敏婷陈焰
Owner FOSHAN ONMILLION NANO MATERIALS
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