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A kind of degradable light conversion film and its preparation method and application

A film and light conversion technology, applied in the field of light conversion film, can solve the problems of film uniformity, low transmittance and mechanical properties, large difference in chain structure, lack of adhesion, etc., and achieve good light conversion performance. , the effect of increasing plant height and increasing leaf length and width

Active Publication Date: 2021-09-21
FOSHAN ONMILLION NANO MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, degradable polymer substrates such as biomass polysaccharides are a highly polar natural polymer compound rich in hydroxyl groups, and non-polar polyolefin materials such as polyethylene have very different chain structures from the above compounds. From a thermodynamic point of view, the miscibility of the two is extremely poor, and the direct mechanical blend will form a completely phase-separated system, and there will be a lack of adhesion between the two phases, resulting in a loss of film uniformity, light transmittance and mechanical properties. reduce

Method used

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  • A kind of degradable light conversion film and its preparation method and application
  • A kind of degradable light conversion film and its preparation method and application
  • A kind of degradable light conversion film and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A degradable light-converting film of the present embodiment includes the following components by mass:

[0047] 100 parts of polylactic acid;

[0048] Light Conversion Agent Sr Coated with Silica and Surface Modified by Silane Coupling Agent 2 MgSi 2 O 7 :Eu 2+ ,Dy 3+ 0.8 servings.

[0049] The degradable light conversion film of the present embodiment is prepared by the following method:

[0050] (1) Take 0.75mmol CTAB, 2ml 0.1mol / L ammonia water and 15mL deionized water in a round-bottomed flask, after stirring CTAB completely dissolve, add 2g light conversion agent Sr 2 MgSi 2 O 7 :Eu 2+ ,Dy 3+ Continue to stir for 30min to make the light conversion agent completely dispersed in the solution, then quickly inject 15μL of n-silane ethyl ester, stir at 60-70°C for 24h, and then add 15μL of silane coupling agent 3-[3-carboxyallyl The amido]propyl triethoxysilane continued to stir and react for 12 hours, and after the reaction was completed, washing and dryin...

Embodiment 2

[0054] A degradable light-converting film of the present embodiment includes the following components by mass percentage:

[0055] 30 parts of methyl acrylate modified starch;

[0056] Silica-coated and surface-modified light conversion agent CaAl with silane coupling agent 2 O 4 :Eu 2+ ,Nd 3+ 0.6 servings;

[0057] 3 parts of ethylene-acrylic acid copolymer;

[0058] Polyethylene 70 parts.

[0059] The degradable light conversion film of the present embodiment is prepared by the following method:

[0060] (1) Take 0.75mmol CTAB, 2ml 0.1mol / L ammonia water and 15mL deionized water in a round-bottomed flask, after stirring CTAB completely dissolve, add 2g light conversion agent CaAl 2 O 4 :Eu 2+ ,Nd 3+Continue to stir for 30 minutes to completely disperse the light-transforming agent in the solution, then quickly inject 15 μL of n-silyl ethyl ester, stir and react at 60-70 °C for 24 hours, and then add 15 μL of silane coupling agent 3-[3-carboxyallyl Amido]propyltri...

Embodiment 3

[0064] A degradable light conversion film of this embodiment includes the following components by mass:

[0065]

[0066] The degradable light-converting film of this example is prepared by the following method:

[0067] (1) Take 0.5mmol CTAB, 1ml 0.1mol / L ammonia water and 20mL deionized water in a round bottom flask, stir to dissolve CTAB completely, then add 1g carbon quantum dot light conversion agent and continue stirring for 30min to make carbon quantum dots The light agent is completely dispersed in the solution, then quickly inject 5 μL of n-silyl ethyl ester, stir and react at 50-60 °C for 30 hours, and then add 5 μL of silane coupling agent N-(β-aminoethyl)-γ-aminopropyl Triethoxysilane was stirred and reacted for 10 hours. After the reaction was completed, it was washed and dried to obtain a light converting agent coated with silica and surface-modified by a silane coupling agent.

[0068] (2) Mix 0.2g of the surface-modified light-transforming agent obtained in...

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Abstract

The invention belongs to the technical field of light conversion films, and discloses a degradable light conversion film, a preparation method and an application thereof. The degradable light conversion film includes the following components in proportion by mass: 20 to 100 parts of a degradable polymer substrate, 0.1 to 1.2 parts of a surface modified light conversion agent, 0 to 80 parts of a polyolefin film substrate, and 1% to 10% solubilizer relative to the mass of the polyolefin film base material. The invention adopts a specific surface modification method to solve the problem of mixing and dispersing the light conversion agent in the degradable polymer substrate, and the obtained light conversion film has good uniformity, light transmittance and processing performance, which fully meets the needs of agricultural shed films and agricultural mulch films. usage requirements. It has been verified that the greenhouse using the light conversion film can effectively improve the yield and disease resistance of fruit and vegetable crops. In addition, the degradable polymer substrate can be further compounded with the polyolefin film substrate, which can take into account the degradable performance and service life of the film.

Description

technical field [0001] The invention belongs to the technical field of light conversion films, and in particular relates to a degradable light conversion film and its preparation method and application. Background technique [0002] Plant growth is closely related to photosynthesis, and the luminous spectrum of sunlight plays a vital role in the growth and development of plants. The light that plants need for photosynthesis has a wavelength of about 400-720nm. Among them, light of 440-480nm (blue) and 640-680nm (red) contribute the most to photosynthesis. Therefore, converting other wavelength spectra into blue and red light as much as possible plays an important role in promoting plant growth, early maturity and increased yield. [0003] The light conversion film is a film that realizes light conversion by adding a light conversion agent. Through the action of the added light conversion agent, it converts ultraviolet light that is harmful to plant growth into visible ligh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/04C08L23/06C08L3/04C08L23/08C08L1/02C08L5/08C08K9/10C08K9/06C08K3/34C08K3/36C08K3/24C08K3/04C08K5/18C08J5/18A01G13/02A01G9/14
CPCA01G9/1438A01G13/0275C08J5/18C08J2301/02C08J2305/08C08J2323/06C08J2367/04C08J2403/04C08J2423/06C08J2423/08C08K3/04C08K3/24C08K3/34C08K3/36C08K5/18C08K9/06C08K9/10Y02A40/25
Inventor 叶炜浩胡广齐陈焰梁敏婷郑明东
Owner FOSHAN ONMILLION NANO MATERIALS
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