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Transferable wearing-resistant flexible super-hydrophobic film and preparation method thereof

A super-hydrophobic and thin-film technology, which is applied in the direction of pretreatment surface, epoxy resin coating, polyurea/polyurethane coating, etc., can solve the problems of non-repairability, difficulty of replacement, secondary pollution, etc., to broaden the scope of use, The effect of roughening the surface and maintaining integrity

Active Publication Date: 2017-02-01
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a transferable wear-resistant flexible super-hydrophobic coating in order to overcome the above-mentioned existing wear-resistant super-hydrophobic coatings that are not repairable, difficult to remove after damage, difficult to replace, and easy to cause secondary pollution. Hydrophobic film and preparation method thereof

Method used

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  • Transferable wearing-resistant flexible super-hydrophobic film and preparation method thereof
  • Transferable wearing-resistant flexible super-hydrophobic film and preparation method thereof
  • Transferable wearing-resistant flexible super-hydrophobic film and preparation method thereof

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preparation example Construction

[0053] A transferable wear-resistant flexible super-hydrophobic film is a non-fixed and transferable film-like material with good wear resistance, durability and elasticity, which can be bent and folded, and can be cut to any shape as required, and glued Connected to the surface of substrates of various materials and shapes to obtain super-hydrophobicity. The preparation method steps are:

[0054] (1) Primer preparation and preparation: add 5-40 parts by mass of soft and hard composite resin and its curing agent to 100-500 parts by mass of diluent, ultrasonically stir for 30-120 minutes, then mechanically stir for 2-30 minutes, then add 0-50 parts of micro-powder and 0-5 parts of additives, continue stirring for 10-60 minutes to obtain a uniformly dispersed hybrid primer. Form a uniform coating on the surface of the material, adjust the coating thickness to 0.5 μm ~ 5mm, and cure at room temperature for 30 ~ 120 minutes; the weight ratio of soft resin to hard resin is 0.1 ~ 1...

Embodiment 1

[0068] Dissolve 5g of dimethylsiloxane and 5g of polymethyl methacrylate in 100g of acetone, ultrasonicate for 30min, then mechanically stir for 2min, then add 1g of microsilica powder and 0.1g of additives, which contain fluids of equal mass specific gravity Leveling agent BYK-358, defoamer BYK-555, dispersant BYK-161 and anti-sedimentation agent fumed silica, continue to stir for 30 minutes to obtain a uniformly dispersed hybrid primer, and stand for degassing for 10 minutes to obtain a primer coating; Disperse 1 g of hydrophobic zinc oxide nanoparticles with a particle size of 5-200 nm in 100 mL of acetone solution, and obtain a uniformly dispersed super-hydrophobic coating after ultrasonic dispersion and mechanical stirring for 30 min; A uniform coating is formed on the surface of the toughened glass, and after curing for 30 minutes, the superhydrophobic coating prepared above is sprayed on the surface. Finally, the composite superhydrophobic film prepared above is placed i...

Embodiment 2

[0070] Dissolve 10g of polyethylene and 5g of FEVE fluorocarbon resin in 200g of butyl acetate, ultrasonicate for 60 minutes, then mechanically stir for 10 minutes, then add 5g of hollow microspheres, continue stirring for 30 minutes to obtain a uniformly dispersed hybrid primer, and let it stand for degassing for 30 minutes Finally, the primer coating was obtained; 2 g of silicon dioxide hydrophobic nanoparticles with a particle size of 5 to 200 nm were dispersed in 100 mL of butyl acetate solution, and a uniformly dispersed superhydrophobic coating was obtained after ultrasonic dispersion and mechanical stirring for 30 min; the above primer Spray the lacquer coating on the surface of the degreased and decontaminated glazed tiles to form a uniform coating. After curing for 60 minutes, spray the super-hydrophobic coating prepared above on the surface. Finally, put the composite super-hydrophobic film prepared above in an oven at 150°C After solidifying for 1 hour and separating...

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Abstract

The invention discloses a transferable wearing-resistant flexible super-hydrophobic film and a preparation method thereof. The preparation method comprises the following steps: by using a two-step coating method, coating the surface of a smooth substrate which is subjected to degreasing and decontamination treatment or is coated with a resin film releasing agent with soft and hard compounded resin, further coating the surface of the half-cured compounded resin with a super-hydrophobic nano coating, performing room-temperature or high-temperature curing, and separating from the substrate, or coating the surface of a base film, and curing, thereby obtaining the transferable wearing-resistant flexible super-hydrophobic film directly. The transferable wearing-resistant flexible super-hydrophobic film has the advantages of being simple in process, simple and easy to operate, low in cost and the like, and has industrial on-scale production prospects. The transferable wearing-resistant flexible super-hydrophobic film disclosed by the invention is relatively good in wearing resistance, good in resistance on external force such as finger friction and sand paper grinding and good in flexibility, and can be adhered to complex substrate surfaces along with shapes after being cut.

Description

technical field [0001] The invention belongs to the field of coating preparation, in particular to a transferable wear-resistant flexible super-hydrophobic film and a preparation method thereof. Background technique [0002] A superhydrophobic material refers to a surface whose water contact angle is greater than 150° and the rolling angle is less than 10°. Studies have found that superhydrophobic surfaces have excellent properties such as antifouling and self-cleaning, and have great applications in daily life. However, as far as the currently prepared superhydrophobic materials are concerned, their fragile mechanical wear resistance has become the main obstacle for their application in actual life production. In 2015, people began to use organic resins as adhesives to bond the superhydrophobic coating to the substrate and successfully broke through the destructibility of the superhydrophobic coating. However, once this superhydrophobic composite coating with high wear res...

Claims

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Application Information

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IPC IPC(8): C09D183/04C09D133/12C09D123/06C09D123/08C09D133/00C09D127/12C09D175/04C09D123/12C09D127/16C09D163/00C09D7/12C09D1/00B05D3/02B05D7/00B05D7/04
CPCB05D3/02B05D7/00C09D1/00C09D123/00C09D127/00C09D133/00C09D163/00C09D175/04C09D183/04B05D3/0254B05D7/04B05D7/544B05D2202/00B05D2203/30B05D2203/35B05D2401/60C08K2201/014C08L2205/03C09D7/61C09D123/06C09D123/0853C09D123/12C09D127/12C09D127/16C09D133/12C08L33/12C08K13/02C08K3/36C08L83/04C08L27/12C08L75/04C08L63/00C08L23/06C08L27/18C08L33/00C08L23/0853
Inventor 张友法王山林戴文哲余新泉
Owner SOUTHEAST UNIV
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