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Light conversion film with long service life and preparation method thereof

A light-converting film and long-life technology, which is applied in botany equipment and methods, chemical instruments and methods, applications, etc., can solve the problems of accelerating the aging of agricultural film, affecting the life of agricultural film, and fast strength decay, so as to promote plant growth , saving planting costs and prolonging the service life

Active Publication Date: 2017-07-14
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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  • Light conversion film with long service life and preparation method thereof
  • Light conversion film with long service life and preparation method thereof
  • Light conversion film with long service life and preparation method thereof

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preparation example Construction

[0035] The preparation method of the light conversion film with long service life includes 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, the isolation layer premix and the light conversion layer premix into a co-extruder for multi-layer co-extrusion to obtain a light conversion film with a multi-layer structure.

Embodiment 1

[0041] Such as figure 1 As shown, a light conversion film with long service life includes a first protective layer 10, a light conversion layer 20 and a second protective layer 30; the first protective layer 10 is composed of a plastic layer 101 and an isolation layer 102, and the material of the plastic layer 101 It is polyethylene with a thickness of 20 μm, and the material of the isolation layer 102 is nylon with a thickness of 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 100 μm. 40 μm; 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, the thickness is 20 μm, the material of the isolation layer 302 is nylon, and the thickness is 10 μm; the total thickness of the light conversion film is 100 μm .

[0042] The absorption spectrum and emissi...

Embodiment 2

[0044] Such as figure 1 As shown, a light conversion film with long service life includes a first protective layer 10, a light conversion layer 20 and a second protective layer 30; the first protective layer 10 is composed of a plastic layer 101 and an isolation layer 102, and the material of the plastic layer 101 It 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; The total thickness is 30 μm.

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Abstract

The invention discloses a light conversion film with long service life and a preparation method thereof. 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, wherein the protective layers are composed 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) fully and uniformly mixing matrix resin, a light conversion agent, a lubricant, a light stabilizer and an antioxidant so as to obtain a light conversion layer premix; and 3) adding the plastic layer premix, the isolation layer premix and the light conversion layer premix into a co-extruder, and carrying out multilayer co-extrusion. According to the invention, the isolation layer of the light conversion film can well block moisture and oxygen in air, so decomposition due to contact of the light conversion agent in the light conversion layer with moisture and oxygen is avoided from generation; the stability of the light conversion agent is improved; and the service life of the light conversion film is greatly prolonged.

Description

technical field [0001] The invention relates to a light-transferring film with long service life and a preparation method thereof, belonging 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 high, the compatib...

Claims

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Application Information

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Patent Type & Authority Applications(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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