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Water-dispersible crosslinking type fluoropolymer and application of fluoropolymer in preparation of super-amphiphobic surfaces

A super-amphiphobic surface and dispersive technology, which is applied in the manufacture of tools, coatings, paper coatings, etc., can solve the problems of endangering human health, polluting the environment, and the high price of fluoropolymers, achieving reliable bonding and simple methods Effect

Active Publication Date: 2014-11-05
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

[0008] In order to overcome the defects that the existing fluoropolymer is difficult to form a real chemical bond with the substrate, the adhesion between the fluoropolymer and the surface of the substrate is not strong, and a firm super-amphiphobic surface cannot be formed, and In order to solve the problems that the existing oil-soluble fluoropolymers are expensive, pollute the environment, and endanger human health, etc., the primary purpose of the present invention is to provide a water-dispersible cross-linkable fluoropolymer

Method used

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  • Water-dispersible crosslinking type fluoropolymer and application of fluoropolymer in preparation of super-amphiphobic surfaces
  • Water-dispersible crosslinking type fluoropolymer and application of fluoropolymer in preparation of super-amphiphobic surfaces
  • Water-dispersible crosslinking type fluoropolymer and application of fluoropolymer in preparation of super-amphiphobic surfaces

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The ATRP method synthesizes water-dispersible cross-linkable fluoropolymer, comprising the following steps:

[0051] (1) Synthesis of monomer Epoxy-PEGMA 526

[0052] Add 2.5g polyethylene glycol methacrylate (Mn=500) and 12ml epichlorohydrin to toluene, then add catalyst boron trifluoride-ether mixed solution and sodium hydroxide, react at 20°C for 2 hours , after washing and precipitation, polyethylene glycol methacrylate with epoxy group at the end (that is, Epoxy-PEGMA 526 ); wherein the mass ratio of polyethylene glycol methyl methacrylate, epichlorohydrin, toluene, boron trifluoride-ether and sodium hydroxide is 1:0.5:10:0.01:0.01.

[0053] The above process takes place as follows:

[0054]

[0055] (2) Synthesis of water-dispersible cross-linkable fluoropolymer

[0056] Add 1.852g of monomer Epoxy-PEGMA synthesized in step (1) into a 100ml round bottom flask 526 , 0.203g 2-bromoisobutyric acid monomethoxyethylene glycol ester, 0.237g 4,4'-dinonyl-2,2'-bip...

Embodiment 2

[0060] Synthesis of water-dispersible cross-linkable fluoropolymer by anionic polymerization, comprising the following steps:

[0061] (1) Synthesis of monomer Epoxy-PEGA 300

[0062] Add 4.5% polyethylene glycol acrylate (Mn=300) and 22ml epichlorohydrin to cyclohexanone, then add catalyst tetrabutylammonium fluoride and potassium hydroxide, react at 50°C for 20 hours, and wash , Precipitate to obtain polyethylene glycol acrylate with epoxy group at the end (ie Epoxy-PEGA 300 ); wherein the mass ratio of polyethylene glycol methyl acrylate, epichlorohydrin, cyclohexanone, tetrabutylammonium fluoride and potassium hydroxide is 1:10:100:1:1.

[0063] The above process takes place as follows:

[0064]

[0065] (2) Synthesis of water-dispersible cross-linkable fluoropolymer

[0066] At -78°C (dry ice acetone bath), add 0.19 ml of 1,1-diphenylethylene to a three-necked flask containing 250 ml of anhydrous tetrahydrofuran, followed by adding 0.6 ml of 1.4 mol / L sec-butyllith...

Embodiment 3

[0070] Synthesis of water-dispersible cross-linkable fluoropolymer by "Click" method, including the following steps:

[0071] (1) Synthesis of monomer Epoxy-PEGMA 526

[0072] Same as step (1) of Example 1.

[0073] (2) Synthesis of water-dispersible cross-linkable fluoropolymer

[0074] Add 2.852g of monomer Epoxy-PEGMA synthesized in step (1) into a 100ml round bottom flask 526 , 0.103g trimethylsilyl ATRP initiator, 0.237g 4,4'-dinonyl-2,2'-bipyridine and 3ml anisole, stir and dissolve the reaction system, bubble with argon for 30min, and remove Oxygen, then transfer the reaction system to a 100ml round bottom flask containing 0.1124g cuprous bromide, 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, then at room temperature Under vacuum drying for 24h to constant weight, the product end is P(Epoxy-PEGMA 526 ).

[0075] In a 100ml round-bottomed flask, add 0.15g of th...

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Abstract

The invention discloses a water-dispersible crosslinking type fluoropolymer and application of the fluoropolymer in preparation of super-amphiphobic surfaces. The fluoropolymer is a block polymer polymerized by a monomer A and a monomer B and has a molecular weight of 500-47000, wherein the mole ratio of the monomer A to the monomer B is 1: (0.2-10); and the structures of the monomer A and the monomer B are respectively shown in formulas I and II. The fluoropolymer can be used for preparing the super-amphiphobic surfaces. As a crosslinking block part of the water-dispersible crosslinking type fluoropolymer has favorable hydrophilcity, the water-dispersible crosslinking type fluoropolymer can be prepared into an aqueous micelle which takes the fluoropolymer as a core and takes a hydrophilic chain segment as a shell in water, so as to realize the aim of constructing the super-amphiphobic surfaces in a green and environment-friendly water solution. The super-amphiphobic surfaces prepared by using the fluoropolymer are firm in bonding with base materials, rub-resistant and washing-endurable.

Description

technical field [0001] The invention belongs to the field of super-amphiphobic materials, in particular to a water-dispersible cross-linkable fluoropolymer and its application in preparing super-amphiphobic surfaces. Background technique [0002] Due to its unique hydrophobic and oleophobic properties, superamphiphobic surfaces can be applied in many aspects of modern industry. For example: superamphiphobic surface has self-cleaning function and can be used for solar panels or some mirrors that need to be kept clean, such as the surface of gas stoves. 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-scale power outage, stop production...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F293/00C08F220/24C08G65/48B27K3/02D21H19/20D06M15/21C04B41/48
Inventor 胡继文邹海良张干伟刘锋侯成敏杨洋胡盛逾
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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