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Low-waveband ultraviolet absorption antibacterial light conversion film and preparation method thereof

A technology of light conversion film and external absorption, applied in the field of low-band ultraviolet absorption antibacterial light conversion film and its preparation, can solve the problems of low absorption rate, incomplete ultraviolet shielding, low light conversion efficiency of commercial light conversion film, etc. Strong ability, widening the ultraviolet absorption band, and remarkable bacteriostatic effect

Active Publication Date: 2020-11-17
INST OF ENVIRONMENT & SUSTAINABLE DEV IN AGRI CHINESE ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] Aiming at a series of problems such as the low absorption rate of β-DKs to low-band ultraviolet light, which causes low light conversion efficiency of commercial light conversion films and incomplete ultraviolet shielding, the present invention uses cypress alcohol as an anion by introducing a new type of light conversion agent Ligand, broaden the ultraviolet absorption band of the photoconversion agent, and reduce the adverse effects of ultraviolet light on crop growth

Method used

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  • Low-waveband ultraviolet absorption antibacterial light conversion film and preparation method thereof
  • Low-waveband ultraviolet absorption antibacterial light conversion film and preparation method thereof
  • Low-waveband ultraviolet absorption antibacterial light conversion film and preparation method thereof

Examples

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Embodiment 1

[0046] This embodiment provides a low-band ultraviolet absorption antibacterial light conversion film, which consists of the following components:

[0047] Polyethylene: 89.98 parts (PO, EVA can be used instead of polyethylene)

[0048] Light conversion agent: 0.002 parts

[0049] Anti-aging agent: 5 parts (select polypropylene resin produced by Shandong Baiyun Plastic Industry Co., Ltd.)

[0050] Anti-fog agent: 5 parts (select sorbitan monostearate produced by Shandong Baiyun Plastic Industry Co., Ltd.)

[0051] Wherein, the synthetic method of light conversion agent is as follows:

[0052] (1) Synthesis of light conversion agent; take 0.1mol EuCl 3 ·6H 2 O was dissolved in 20ml of distilled water to obtain a europium ion solution, and 0.2mol of 2-thienoyltrifluoroacetone, 0.1mol of 1,10-phenanthroline, and 0.1mol of cypress alcohol were dissolved in 5ml of ethanol to obtain a ligand solution. Heat the europium ion solution to 60°C, and add 2-thienoyltrifluoroacetone, c...

Embodiment 2

[0057] This embodiment provides a low-band ultraviolet absorption antibacterial light conversion film, which consists of the following components:

[0058]

[0059] The preparation process of the light conversion agent, the light conversion masterbatch and the light conversion film in this example is the same as in Example 1, wherein the addition ratio of the light conversion agent in the light conversion masterbatch is 0.3%, and the addition ratio in the light conversion film The ratio is 0.15%.

[0060] The ultraviolet absorption spectrum, excitation spectrum and emission spectrum of embodiment 2 transit light film are respectively as figure 1 , figure 2 , image 3 shown. Depend on figure 1 , figure 2 , image 3 It can be seen that the light conversion film can effectively absorb 230-400nm ultraviolet light, and be excited to emit red light with a main emission peak at 615nm. Moreover, the light conversion film in this example is more easily excited by low-band u...

Embodiment 3

[0062] This embodiment provides a low-band ultraviolet absorption antibacterial light conversion film, which consists of the following components:

[0063]

[0064] The preparation process of the light conversion agent, the light conversion masterbatch and the light conversion film in this example is the same as in Example 1, wherein the addition ratio of the light conversion agent in the light conversion masterbatch is 0.6%, and the addition ratio in the light conversion film The ratio is 0.3%.

[0065] The ultraviolet absorption spectrum, excitation spectrum and emission spectrum of the light conversion film of embodiment 3 are respectively as follows figure 1 , figure 2 , image 3 shown. Depend on figure 1 , figure 2 , image 3 It can be seen that the light conversion film can be effectively excited by ultraviolet light and produce red light with a main emission peak at 615nm. In addition, the light conversion film in this example is more likely to be excited by...

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Abstract

The invention discloses a low-waveband ultraviolet absorption antibacterial light conversion film and a preparation method thereof. The light conversion film comprises the following components: 89.97-99.99 parts of polymer resin, 0.001-0.003 part of a light conversion agent, 0-5 parts of an anti-aging agent, and 0-5 parts of an anti-fog drop agent. The general molecular formula of the light conversion agent is [Eu(TTA)xPhen(beta-T)(3-x)], wherein TTA is 2-thenoyltrifluoroacetone, Phen is 1,10-phenanthroline, and (beta-T) is Chamaecyparis pisifera oleyl alcohol. By introducing the novel light conversion agent into the light conversion film, the absorption capacity of the light conversion film to low-waveband ultraviolet light is enhanced, the waveband ultraviolet light is converted into redlight required by plant photosynthesis, growth of crops is facilitated, in addition, the light conversion film is remarkable in antibacterial effect, and growth of pathogenic microorganisms can be effectively inhibited.

Description

technical field [0001] The invention belongs to the technical field of agricultural light conversion film, in particular to a low-band ultraviolet absorption antibacterial light conversion film and a preparation method thereof Background technique [0002] Light quality has a direct impact on crop growth and development. Among them, blue-violet light (400-500nm) and red-orange light (600-700nm) can be absorbed by pigments such as chlorophyll a, b, etc., and enhance the photosynthesis of plants. Yellow-green light (500-600nm) is almost useless due to reflections from plant leaves. The effect of UV light on plants depends on its wavelength and dose. Such as: high-dose ultraviolet rays not only lead to accelerated aging of polyethylene film, but also have adverse effects on crop growth; before harvest, moderate supplementation of UV-A (315-400nm) is of great significance to promote early fruit maturity and improve fruit quality; low-dose UV -B (280-315nm) will induce the acc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08K5/00C08J5/18A01G13/02
CPCC08J5/18A01G13/0275C08J2323/06C08K5/0091
Inventor 何文清刘杨刘家磊刘琪
Owner INST OF ENVIRONMENT & SUSTAINABLE DEV IN AGRI CHINESE ACADEMY OF AGRI SCI
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