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Wear-resisting super-hydrophobic coating composition as well as preparation method and application thereof

A technology of super-hydrophobic coatings and compositions, applied in the direction of polyester coatings, epoxy resin coatings, polyurea/polyurethane coatings, etc., can solve the problems of industrial application limitations and many steps, and achieve improved wear resistance and increased stability , enhance the binding effect

Inactive Publication Date: 2018-05-04
杭州纳微生物化学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the method of preparing this superhydrophobic coating requires many steps and cannot be obtained in a short time or by a simple one-step method, so its industrial application is greatly limited.

Method used

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  • Wear-resisting super-hydrophobic coating composition as well as preparation method and application thereof
  • Wear-resisting super-hydrophobic coating composition as well as preparation method and application thereof
  • Wear-resisting super-hydrophobic coating composition as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Preparation of nanomaterial dispersion: add 1.5g of hydrophobic fumed silica (R972) and 1.0g of perfluorooctyltriethoxysilane to 27.5g of isopropanol solution, and stir mechanically for 30 minutes to obtain nanomaterial dispersion ; The size of the micro-nano double rough structure is 0.03-3 microns.

[0034] Preparation of adhesive material dispersion: Add 6.0g of epoxy resin (EPO-TEK301) into 24.0g of acetone, and mechanically stir for 40 minutes to obtain the adhesive material dispersion;

[0035] Application process: Mix the above nano-material dispersion and bonding material dispersion, stir mechanically for 20 minutes and mix evenly. The resulting mixed solution was sprayed 3 times over a clean glass plate at a distance of 20 cm and a speed of 8 cm / s through an air gun with a pressure of 40 psi, and then the glass plate was dried at room temperature for 1 hour and placed in an oven at 65 ° C. After curing for 2 hours, a superhydrophobic coating was finally obtain...

Embodiment 2

[0038] Preparation of nanomaterial dispersion: add 0.5g hydrophobic fumed silica (R972), 1.0g nano titanium dioxide (TTP-A10) and 1.0g hexadecyltrimethoxysilane to 27.5g ethanol solution, and mechanically stir for 30 minutes , that is to obtain the nano material dispersion; the size of the micro-nano double rough structure is 0.08-4 microns.

[0039] Preparation of adhesive material dispersion: Add 8.0g of polyurethane resin (KL-540E) into the mixed solution of 10.0g of acetone, 6.0g of ethyl acetate and 6.0g of dimethylformamide, and mechanically stir for 30 minutes to obtain the adhesive material dispersion liquid;

[0040] Application process: Mix the above nano-material dispersion and bonding material dispersion, stir mechanically for 20 minutes and mix evenly. Brush the obtained mixed solution on a clean iron sheet, and dry it in an oven at 120°C for 2 hours, and finally obtain a superhydrophobic coating on the surface of the iron sheet.

[0041]Test results: The surfac...

Embodiment 3

[0043] Preparation of nanomaterial dispersion: Add 2.5g of nano-polytetrafluoroethylene particles (3M-1600) and 1.5g of octyltrimethoxysilane to a mixed solution of 16.0g of acetone and 10.0g of ethanol, and stir mechanically for 20 minutes to obtain nanometer Material dispersion liquid; the size of the micronano double rough structure is 0.1-5 microns.

[0044] Preparation of the adhesive material dispersion: add 7.0 g of polyvinylidene fluoride (V203) to 23.0 g of dimethylformamide solution, and mechanically stir for 30 minutes to obtain the adhesive material dispersion;

[0045] Application process: Mix the above nano-material dispersion and bonding material dispersion, stir mechanically for 20 minutes and mix evenly. The obtained mixed solution was spin-coated on a clean aluminum sheet, and dried in an oven at 120°C for 2.5 hours, and finally a superhydrophobic coating was obtained on the surface of the aluminum sheet.

[0046] Test results: The surface of the coating has...

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Abstract

The invention relates to a wear-resisting super-hydrophobic coating composition as well as a preparation method and application thereof. The composition is prepared from a nano-material dispersion solution and a binding material dispersion solution. The nano-material dispersion solution is prepared by mixing a nanoparticle material, a hydrophobic silane coupling agent and a volatile solvent, wherein nanoparticles form a rough structure with a micro-nano dual scale through a mutual effect of the nanoparticles and the structure is dispersed in the solution of the hydrophobic silane coupling agent; the hydrophobic silane coupling agent has one or more groups and covalent bond connection is formed by the hydrophobic silane coupling agent and the micro-nano dual rough structure; meanwhile, thewear-resisting super-hydrophobic coating composition at least contains one hydrophobic group. A super-hydrophobic coating layer formed by the super-hydrophobic coating composition keeps a long-term effective super-hydrophobic property; the coating composition adopts a binding material so that the binding force between a super-hydrophobic structure and a matrix is enhanced and the protection effectof the coating layer is enhanced; a processing technology of the super-hydrophobic coating layer is simple and convenient and large-area construction is facilitated.

Description

technical field [0001] The invention belongs to the technical field of preparation and application of super-hydrophobic surfaces, and in particular relates to a wear-resistant super-hydrophobic coating composition and a preparation method and application thereof. Background technique [0002] Since the Barthlott research group at the University of Bonn in Germany first reported the superhydrophobic properties of the lotus leaf surface in the 1990s, this surface property is also widely known as the "lotus leaf effect". A superhydrophobic surface generally refers to a solid surface with a water droplet contact angle greater than 150° and a rolling angle less than 10°. Since the contact area between the superhydrophobic surface and water is very small, water droplets cannot stay on the surface, and it is easy to roll off the surface. Therefore, the superhydrophobic surface not only has the function of self-cleaning, but also has the functions of anti-corrosion, waterproof, dra...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D183/04C09D167/08C09D175/04C09D127/16C09D127/18C09D7/62C09D7/63C03C17/00C04B41/85D21H19/32D06N3/00D06N3/12B05D7/16
CPCC09D163/00B05D7/16B05D2202/10B05D2202/25C03C17/009C03C2217/29C03C2218/112C04B41/501C04B41/85C08K3/346C08K3/36C08K9/06C08K2003/2241C08K2003/2296C08K2003/265C08K2201/011C08L2205/02C09D127/16C09D167/08C09D175/04C09D183/04D06N3/0063D06N3/128D21H19/32C08L27/18C08K5/5419C04B41/4905C04B41/4826C04B41/463C04B41/46C04B41/4535
Inventor 葛骅
Owner 杭州纳微生物化学有限公司
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