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Transparent fluorine-containing polymer film

A polymer film, transparent technology, used in synthetic resin layered products, electrical components, household appliances, etc., can solve the problem of ultraviolet shielding effect and interlayer adhesion reduction, affecting the composite effect of matrix materials, and affecting the bonding of composite films. It can achieve the effect of excellent UV aging resistance, long-lasting UV shielding performance and high UV shielding performance.

Active Publication Date: 2022-02-18
ZHEJIANG RES INST OF CHEM IND CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the surface of transparent fluoropolymer films containing small-molecule UV absorbers tends to be sticky, and the initial adhesion after compounding with matrix materials is low. The agent is easy to migrate and precipitate to the surface of the film, which affects the composite effect between it and the matrix material
On the other hand, the UV shielding effect and the interlayer adhesion of the composite film are greatly reduced after the UV-damp heat aging process, and the migration and precipitation are more serious during the UV-damp heat aging process, which affects the adhesion between the composite films.

Method used

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  • Transparent fluorine-containing polymer film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Preparation of polymer type ultraviolet absorber:

[0045] In a flask equipped with a stirrer, a thermometer, a dropping funnel, a nitrogen inlet tube, and a cooler, add 200 g of N,N-dimethylacetamide and heat it to 120 ° C, the 4-methacrylate group- A mixture of 70g of 2-hydroxybenzophenone monomer, 20g of methacrylic acid, 10g of N,N-dimethylacrylamide and 3g of azobisisobutyronitrile was added dropwise into the flask, and after 6 hours of heat preservation, the reaction The liquid was poured into excess methanol, and the precipitated solid was obtained by filtration. After drying in a vacuum oven at 40° C. for 30 hours, 95 g of a light yellow powdery solid was obtained. According to GPC analysis based on standard polystyrene, its weight average molecular weight was 450,000, a: (c+e)=7:3, It is recorded as polymer type ultraviolet absorber A, as follows:

[0046]

[0047] Preparation of transparent fluoropolymer films:

[0048] At 50°C, mix 2000g polyvinyl fluor...

Embodiment 2

[0052] Preparation of polymer type ultraviolet absorber:

[0053] In a flask equipped with a stirrer, a thermometer, a dropping funnel, a nitrogen inlet tube, and a cooler, add 200 g of N,N-dimethylacetamide and heat it to 120 ° C, the 2-hydroxy-4-(3 -methacrylic acid ester base-2-hydroxypropoxyl group) the mixture of benzophenone monomer 20g, methacrylic acid 20g and methyl methacrylate 60g and azobisisobutyronitrile 3g is added dropwise in the flask, After keeping the reaction for 5 hours, the reaction liquid was poured into excess methanol, and the precipitated solid was obtained by filtration. After drying in a vacuum oven at 40° C. for 30 hours, 97 g of a light yellow powdery solid was obtained. According to GPC analysis based on standard polystyrene, its weight average molecular weight was 357,000, a: (c+d)=1:4, It is recorded as polymer type ultraviolet absorber B, as follows:

[0054]

[0055] Preparation of transparent fluoropolymer films:

[0056] At 50°C, mix ...

Embodiment 3

[0060] Preparation of transparent fluoropolymer films:

[0061] At 50°C, 2000g of polyvinylidene fluoride resin, 300g of polymer type ultraviolet absorber B, 5g of triazine ultraviolet absorber S, 20g light stabilizer 783 and 20g nucleating agent dimethyldibenzylidene sorbitol are mixed and granulated in the screw extruder, the pellets are extruded by the extruder and cast into a slit die, and the film is stretched longitudinally. Finally, a transparent PVDF film with a thickness of 30 μm was prepared.

[0062] Preparation of transparent composite film:

[0063] The preparation of the transparent composite film in this example is the same as in Example 1, the only difference is that the transparent fluoropolymer film is the transparent PVDF film prepared in this example.

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Abstract

The invention discloses a transparent fluorine-containing polymer film, which is prepared from 100 parts of fluorine-containing resin, 0.5 to 15 parts of macromolecular ultraviolet light absorber and 0.2 to 2.5 parts of triazine ultraviolet light absorber, wherein the high-molecular ultraviolet light absorber is formed by polymerizing at least one of a benzophenone compound containing a double-bond side group and a benzotriazole compound containing a double-bond side group with at least one of an acrylic acid comonomer, an acrylate comonomer and an acrylamide comonomer. The transparent fluorine-containing polymer film has the advantages of wide ultraviolet absorption range, lasting high ultraviolet shielding performance, good ultraviolet aging resistance, extraction resistance and the like, and is suitable for being used as a solar cell front plate or back plate film, an outdoor building or label protection film and the like.

Description

technical field [0001] The invention belongs to the field of macromolecular materials, and in particular relates to a durable high ultraviolet shielding transparent fluorine-containing polymer film and a composite transparent film comprising the fluorine-containing polymer transparent film. Background technique [0002] Fluoropolymers have good chemical stability, thermal stability, insulation, optical properties, non-combustibility and durability, which make them have broad application prospects. When the transparent fluoropolymer film is used as a solar front sheet or back sheet film, and a protective film for outdoor building structures (such as signs, awnings, greenhouses, houses, etc.), it must have good moisture and heat aging resistance, high transparency Sex, low water vapor transmission rate, high temperature resistance, hydrolysis resistance, corrosion resistance, and ability to resist ultraviolet light. [0003] In order to prevent UV rays from degrading the tran...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/14C08L33/14C08L33/12C08L25/18C08K5/3492C08K5/1575C08J5/18C08F220/30C08F220/06C08F220/54C08F220/14C08F220/36C08F220/20C08F212/32H01L31/048H01L31/049B32B7/12B32B27/08B32B27/28B32B27/30B32B27/34B32B27/36
CPCC08J5/18C08F220/302C08F220/14C08F220/36C08F212/32H01L31/048H01L31/049B32B7/12B32B27/08B32B27/304B32B27/36B32B27/34B32B27/281C08J2327/14C08J2433/14C08J2433/12C08J2425/18C08K5/3492C08K5/1575B32B2307/71B32B2307/552B32B2457/12B32B2590/00C08F220/06C08F220/54C08F220/20Y02E10/50
Inventor 刘伟陈思献潘东铭蔡榕李敏张艳中
Owner ZHEJIANG RES INST OF CHEM IND CO LTD
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