Double-component fluorine-containing hydrophobic coating as well as preparation and using method thereof

A technology of hydrophobic coatings and superhydrophobic coatings, applied in polyurea/polyurethane coatings, coatings, etc., can solve problems such as difficulty in maintaining superhydrophobicity, complicated preparation process, and easy damage to the surface microstructure of materials, so as to improve hydrophobicity , better toughness and processability, better toughness and processability

Inactive Publication Date: 2019-12-13
GUODIAN NEW ENERGY TECH INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most superhydrophobic materials are not only complicated to prepare, but also the microstructure on the surface of the material is easily destroyed, making it difficult to maintain superhydrophobicity during use.

Method used

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  • Double-component fluorine-containing hydrophobic coating as well as preparation and using method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Preparation of A component

[0047] (1) Under nitrogen, put about 40g of butyl acetate into a 150ml reaction bottle, raise the temperature to 80°C, and gradually add 7.5g of methyl methacrylate MMA, 8.1g of butyl methacrylate BMA, and 6.9g of methyl The mixture of hydroxyethyl acrylate HEMA, 7.5g of trifluorooctyl methacrylate PFMA monomer, 0.66g of azobisisobutyronitrile AIBN initiator and 20g of butyl acetate was dripped for 0.5h, then kept for 2h, supplemented 0.066g AIBN, then finish the reaction after 4h.

[0048] (2) Under nitrogen, put about 30 g of butyl acetate and 11 g of nano-PTFE into a 100 ml reaction bottle, and ultrasonically disperse for 20 min at a stirring rate of 1000 rpm.

[0049] (3) Under the condition of a stirring rate of 700rpm, gradually add the treated nano-PTFE suspension in (2) to (1), then add 0.31g of perfluorohexyl ethyl alcohol, and treat it at 80°C for 1h, Obtain the A component.

[0050] Preparation of component B: 10 g of hexamethy...

Embodiment 2

[0054] Preparation of A component

[0055] (1) Under nitrogen, put about 40g of butyl acetate into a 150ml reaction bottle, raise the temperature to 80°C, and gradually add 7.5g of methyl methacrylate MMA, 6.9g of hydroxyethyl methacrylate HEMA, and 15.6g of formazan Tridefluorooctyl acrylate PFMA monomer, 0.58g azobisisobutyronitrile AIBN initiator and 20g butyl acetate mixture, dripped in 0.5h, then kept warm for 2h, supplemented with 0.03g AIBN, and then ended the reaction after 4h .

[0056] (2) Under nitrogen, put about 25 g of butyl acetate and 7 g of cross-linked polystyrene (PS) nanoparticles into a 100 ml reaction bottle, and ultrasonically disperse for 15 min at a stirring rate of 800 rpm.

[0057] (3) Under the condition of a stirring rate of 700rpm, gradually add (2) the cross-linked PS nanoparticle suspension into (1), and at the same time add 0.23g of hexafluoroisopropanol, and treat at 80°C for 40min to obtain component A .

[0058] Preparation of component B...

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Abstract

The invention relates to a double-component fluorine-containing hydrophobic coating as well as a preparation method thereof. The preparation method comprises a step of combining fluorine-containing polyacrylates with organic nano-particles to form the all-organic super-hydrophobic coating. The coating includes the following components in percentage by mass: the component A is 5 percent to 50 percent of fluorine-containing polyacrylates resin, 50 percent to 75 percent of organic nano or micro materials, 0.1 percent to 2 percent of fluorine-containing alcohol and 5 percent to 20 percent of solvent; and the component B is a curing agent. The component A is mixed with the component B according to a certain mass ratio, so that the coating is prepared. The coating can cover various substrates, and can be cured to generate the hydrophobic coating, and thus, the substrates are high in superhydrophobicity.

Description

technical field [0001] The invention relates to the technical field of hydrophobic coatings, in particular to a two-component fluorine-containing all-organic superhydrophobic coating and its preparation and use methods. Background technique [0002] Superhydrophobicity is a special wettability, which generally refers to the spherical shape of water droplets on the solid surface, the contact angle is greater than 150 degrees, and the rolling angle is less than 10 degrees. For surfaces with superhydrophobic properties, the lower the surface energy of the material, the better the hydrophobicity, and when the low surface energy material has a microscopic rough structure, an air film will form between the water droplet and the material, which hinders the wetting of the material surface by water , so as to form a super-hydrophobic state, resulting in the effect of "drip does not stick". This super-hydrophobic property makes super-hydrophobic materials have excellent properties su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D7/65C09D7/63C08G18/62C08F220/18C08F220/14C08F220/20C08F220/22
CPCC09D175/04C09D7/65C09D7/63C08G18/6229C08F220/18C08F220/20C08L27/18C08L25/06C08K5/05C08F220/14C08F220/22
Inventor 陈保卫杜庶铭徐冬高文君张秩鸣孙振新
Owner GUODIAN NEW ENERGY TECH INST
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