Super-hydrophobic coating and preparation method and application thereof

A super-hydrophobic coating and hydrophobic resin technology, which is applied in coatings, textiles and papermaking, and devices for coating liquid on the surface, etc., can solve the problem of poor stability of etching treatment effects, expensive vapor deposition equipment, and template preparation. Low efficiency and other problems, to achieve the effect of increasing the static contact angle and reducing the rolling angle

Inactive Publication Date: 2019-12-20
深圳市心晴网络科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, in the preparation of superhydrophobic coatings, the equipment used by the vapor deposition method is expensive, the preparation efficiency of the template method is low, the stability of the etching method is poor, the process of the self-assembly method is complicated, and some preparation methods require high temperature curing treatment, etc.
In addition, the mechanical stability of the superhydrophobic coating prepared by these methods is poor, and it is easy to lose the superhydrophobic property when it is scratched.
These shortcomings limit the application of superhydrophobic coatings to a certain extent.

Method used

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  • Super-hydrophobic coating and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Superhydrophobic coatings:

[0030] (1) Weigh 25 kg of polytetrafluoroethylene resin, 30 kg of tetrahydrofuran, 1 kg of triethylsilane, 5 kg of polystyrene, 1 kg of α, α-dimethoxy-α-phenylacetophenone, 1 kg of vinyl triethoxy Silane 8kg, diisocyanate 10kg, the tetrafluoroethylene resin and diisocyanate that weighed are dissolved in good tetrahydrofuran, obtain hydrophobicity resin solution;

[0031] (2) Add triethylsilane, polystyrene, α, α-dimethoxy-α-phenylacetophenone and vinyltriethoxysilane to the hydrophobic resin solution, at 25000r / min Disperse at high speed for 40 minutes under the same conditions to obtain a uniformly mixed suspension;

[0032] (3) Put the suspension obtained in step (2) into an airtight container, heat it in a constant temperature water bath at 20°C, and turn on magnetic stirring under the protection of nitrogen, and after fully reacting for 12 hours, remove the suspension formed in the container The reactant was poured out and left to stan...

Embodiment 2

[0035] Superhydrophobic coatings:

[0036] (1) Weigh 5kg of polyacrylic resin, 5kg of fluorinated modified polyurethane, 20kg of N-methylpyrrolidone, 5kg of monosilane, 5kg of triethylsilane, 10kg of polystyrene, 2kg of diphenyl ethyl ketone, isopropyl sulfide Xanthon 1kg, bisbenzoyl phenyl phosphine oxide 2kg, vinyltriethoxysilane 2kg, methyltriethoxysilane 3kg, propyltriethoxysilane 2kg, weighed polyacrylic resin, Fluorinated modified polyurethane, methyltriethoxysilane and propyltriethoxysilane are mixed and dissolved in N-methylpyrrolidone to obtain a hydrophobic resin solution;

[0037] (2) Add monosilane, triethylsilane, polystyrene, diphenyl ethyl ketone, isopropyl thioxanthone and vinyl triethoxysilane to the hydrophobic resin solution, at 15000r / min Disperse at high speed for 60 minutes under the same conditions to obtain a uniformly mixed suspension;

[0038] (3) Put the suspension obtained in step (2) into an airtight container, heat it in a constant temperature w...

Embodiment 3

[0041] Superhydrophobic coatings:

[0042](1) Weigh 18kg of fluorocarbon resin, 26kg of acetone, 8kg of heptadecylfluorodecyl triethoxysilane, 7kg of polystyrene, 2kg of diphenyl ethyl ketone, 2kg of isopropyl thioxanthone, vinyl triethyl Oxygen silane 6kg, propyl triethoxy silane 7kg, the fluorocarbon resin and propyl triethoxy silane that weighed are dissolved in acetone, obtain hydrophobicity resin solution;

[0043] (2) Add heptadecylfluorodecyltriethoxysilane, polystyrene, diphenylethanone, isopropylthioxanthone and vinyltriethoxysilane to the hydrophobic resin solution, at 18000r Disperse at high speed for 45 minutes under the condition of 1 / min to obtain a well-mixed suspension;

[0044] (3) Put the suspension obtained in step (2) into an airtight container, heat it in a constant temperature water bath at 30°C, and turn on magnetic stirring under the protection of nitrogen, and after fully reacting for 8 hours, remove the suspension formed in the container The reactan...

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Abstract

The present invention discloses a super-hydrophobic coating and a preparation method and application thereof. By cross-linking and solidifying raw materials of a hydrophobic resin, a good solvent of the hydrophobic resin, organosilane, polystyrene, a photo initiator, a cross-linking agent, a curing agent and the like, through high-speed dispersion, water-bath reaction and other steps, the super-hydrophobic coating is obtained. The preparation process of the invention is simple, the reaction condition is mild, the super-hydrophobic coating prepared by the method has good adhesion and wear resistance, and has a wide application prospect in production and life.

Description

technical field [0001] The invention relates to the technical field of hydrophobic coatings, in particular to a superhydrophobic coating and its preparation method and application. Background technique [0002] The superhydrophobic state is defined as the superwetting state in which the static contact angle of water droplets on the hydrophobic surface is greater than 150° and the rolling angle is less than 10°. The surface of lotus leaves, legs of water striders, butterfly wings, rose petals, etc. in nature have excellent superhydrophobicity due to their unique micro / nano graded rough structure and chemical composition on the surface, so they have the ability to survive under certain environmental conditions. Advantage. Based on the bionic theory, the research on the preparation of superhydrophobic surfaces has become a hot spot recently. The unique super-wetting characteristics of super-hydrophobic surface make super-hydrophobic materials have self-cleaning, drag reductio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F259/08C08F257/02C08F265/00C08F283/00C08F230/08D06M15/21D06M15/256D06M15/233D06M15/356D06M15/263D06M15/564C09D127/12C09D125/06C09D143/04B05D5/00B05D7/24B05D3/02
CPCB05D3/0254B05D5/00B05D7/24C08F257/02C08F259/08C08F265/00C08F283/006C08L2205/03C09D127/12D06M15/21D06M15/233D06M15/256D06M15/356D06M2200/12C08L25/06C08L43/04
Inventor 余尚辰
Owner 深圳市心晴网络科技有限责任公司
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