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Ultraviolet-crosslinking fluorine-containing polymer and application thereof in preparing super-amphiphobic surface

A super-amphiphobic surface and cross-linking technology, which is applied in the direction of manufacturing tools, plant fibers, coatings, etc., can solve the problems of weak adhesion, poor friction resistance and washing resistance, and poor bonding between the super-amphiphobic surface and the substrate. Reliability and other issues, to achieve the effect of simple method, reliable bonding and strong adhesion

Active Publication Date: 2015-02-04
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In order to overcome the defects of weak adhesion, poor friction resistance and washing resistance caused by the unreliable bonding between the superamphiphobic surface and the substrate prepared by the existing fluoropolymer, the primary purpose of the present invention is to provide a A UV-crosslinked fluoropolymer, which can form a firm chemical bond with most substrates, and its crosslinking and curing method is simple and easy

Method used

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  • Ultraviolet-crosslinking fluorine-containing polymer and application thereof in preparing super-amphiphobic surface
  • Ultraviolet-crosslinking fluorine-containing polymer and application thereof in preparing super-amphiphobic surface
  • Ultraviolet-crosslinking fluorine-containing polymer and application thereof in preparing super-amphiphobic surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Synthesizing UV-crosslinked fluoropolymer by ATRP method comprises the following steps:

[0042] Add 1.852g of triazide dihydroxypropyl methacrylate (3-azido-2-hydroxypropyl methacrylate, referred to as: AHMA) and 0.203g of 2-bromoisobutyric acid monomethoxyethyl in a 100ml round bottom flask Glycol ester, 0.237g 4,4'-dinonyl-2,2'-bipyridine and 3ml cyclohexanone, stirring and dissolving the reaction system, bubbling with argon gas for 30min, then removing oxygen, and then transferring the reaction system Put 0.1124g of cuprous bromide into a 50ml round-bottomed flask, carry out polymerization reaction at 40°C for 2h, the reaction product is precipitated in methanol, washed with methanol and then washed with n-hexane, and then vacuum-dried at room temperature for 24h to constant weight , to obtain the product polytriazide dihydroxypropyl methacrylate (PAHMA).

[0043] Add 1.5g PAHMA, 1.852g trifluoroethyl methacrylate, 0.737g 4,4'-dinonyl-2,2'-bipyridine and 4ml triflu...

Embodiment 2

[0047] Synthesis of ultraviolet light crosslinking type fluoropolymer by anion polymerization method, comprising the following steps:

[0048] Add 0.19 ml of 1,1-diphenylethylene to a three-neck flask containing 250 ml of anhydrous tetrahydrofuran at -78°C (dry ice acetone bath), followed by adding 0.6 ml of 1.4 mol / L sec-butyllithium in hexane solution. After 25 minutes, 25.19 ml of azidoethyl methacrylate (2-azidoethyl methacrylate, referred to as: AMA) was added, 1.24 ml of pentafluoroethyl methacrylate was added after the polymerization reaction was carried out for 1 hour, and the polymerization reaction was continued for another 2 hours before adding 1.0 mL of anhydrous methanol was used to terminate the polymerization. After the reaction system was warmed up to 23° C., it was concentrated by distillation to 100 ml, and then the polymer was precipitated in excess methanol, filtered and dried in a vacuum oven to obtain the desired polymer PAMA-b-PFEMA.

[0049] The struc...

Embodiment 3

[0052] The free radical method synthesizes the ultraviolet light cross-linking type fluoropolymer, comprises the following steps:

[0053] Add 15g perfluorooctyl ethyl acrylate, 1.852g azidophenyl methacrylate (4-azidophenyl methacrylate, ADMA for short), 0.174g AIBN as initiator and 50ml trifluorotoluene into a 100ml round bottom flask, The reaction system was stirred and dissolved, bubbled with argon for 30 minutes, and polymerized at 90°C for 8 hours. The reaction product was precipitated in methanol, washed with methanol and then washed with n-hexane, and then vacuum-dried at 40°C for 24 hours to constant weight to obtain product.

[0054] The structure of the product is shown below:

[0055]

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Abstract

The invention discloses an ultraviolet-crosslinking fluorine-containing polymer and application thereof in preparing a super-amphiphobic surface. The fluorine-containing polymer is a block polymer or random copolymer polymerized from a monomer A and a monomer B, wherein the polymerization degree of the monomer A is 10-200, and the polymerization degree of the monomer B is 10-500; and the structures of the monomer A and monomer B are respectively disclosed as Formula I and Formula II. The ultraviolet-crosslinking fluorine-containing polymer disclosed by the invention contains azido group, and the azido group can implement crosslinking reaction with most substrates under the ultraviolet irradiation, thereby preparing a super-amphiphobic surface on most substrates. The method for preparing the super-amphiphobic surface is simple, and can be implemented only by catalyzing the ring-opening crosslinking of azide under ultraviolet irradiation, thereby being simple and feasible. The super-amphiphobic surface prepared by the ultraviolet-crosslinking fluorine-containing polymer has the advantages of firm bonding with the substrate, strong binding power, friction resistance and laundering durability.

Description

technical field [0001] The invention belongs to the field of super-amphiphobic materials, and in particular relates to an ultraviolet-light cross-linked fluorine-containing polymer and its application in preparing super-amphiphobic surfaces. Background technique [0002] Due to its unique hydrophobic and oleophobic properties, the super-amphiphobic surface has been successfully applied in many aspects, such as the self-cleaning function of the super-amphiphobic surface, which can be used for solar panels or some mirrors that need to be kept clean, such as the surface of gas cookers . Furthermore, the formation of a superamphiphobic surface on the metal surface can also greatly improve the corrosion resistance of the metal surface. In addition, if a super-amphiphobic surface is constructed on the wire or high-voltage power grid, it can prevent the wire from forming a frozen layer on the surface of the ice storm or snowstorm, which will cause a short circuit, cause a large-sc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F293/00C08F220/22C08F220/36C08F220/34C08G81/02C09D153/00C09D133/16C09D187/00C09D5/08D06M15/227D06M15/37D21H19/20D21H19/24B27K3/36D06M101/06
Inventor 胡继文邹海良刘国军张干伟刘锋侯成敏李妃
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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