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Superhydrophobic coating and preparation method thereof

A technology of super-hydrophobic coating and hydrophobic layer, which can be used in coatings, devices for coating liquids on surfaces, special surfaces, etc., which can solve the problems of poor marine environment and human health, unsuitable for large-area preparation, and expensive instruments. , to achieve the effect of good superhydrophobicity, low price, and easy availability

Inactive Publication Date: 2018-12-07
JIANGSU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] There are few reports on the application of superhydrophobicity to the adsorption of marine organisms. There are only a few studies on the anti-bioadhesion of the surface of the bionic structure with low surface energy, and there are phase separation method, template method, electrospinning method, Sol-gel method, ion etching method, etc., although various, most of them are only used for laboratory preparation. There are many substances on the superhydrophobic surface, which will release toxic substances when used in marine antifouling, causing adverse effects on the marine environment and human health

Method used

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  • Superhydrophobic coating and preparation method thereof

Examples

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Embodiment 1

[0032] (1) Grinding and cleaning of the substrate: Use an aluminum sheet as the metal substrate with a specification of 50*100*5mm, polish the aluminum sheet with 600# sandpaper for 10 minutes, and clean it with acetone, ethanol and distilled water for 1 minute respectively;

[0033] (2) Preparation of the hydrophobic layer suspension: mix nano-zinc oxide particles with silane coupling agent hexadecyltrimethoxysilane in a molar ratio of 4:1 to make modified nano-zinc oxide particles; The oxide particles are added to the ethanol solution of heptadecafluorodecyltriethoxysilane and left to stand to obtain modified nano-nickel particles;

[0034] Mix modified nano-zinc oxide particles, modified nano-nickel particles, and modified silicon dioxide in a mass ratio of 2:1:3 to form mixed particles, mix the mixed particles with acetone and water to form a suspension, and mix 1g of mixed particles with Mix 20ml of acetone aqueous solution, the volume of acetone in the acetone aqueous so...

Embodiment 2

[0040] (1) Grinding and cleaning of the substrate: Use an aluminum sheet as the metal substrate with a specification of 50*100*5mm, polish the aluminum sheet with 600# sandpaper for 10 minutes, and clean it with acetone, ethanol and distilled water for 1 minute respectively;

[0041] (2) Preparation of hydrophobic layer suspension: mix nano-zinc oxide particles with silane coupling agent hexadecyltrimethoxysilane in a molar ratio of 3:1 to make modified nano-zinc oxide particles; The oxide particles are added to the ethanol solution of heptadecafluorodecyltriethoxysilane and left to stand to obtain modified nano-nickel particles;

[0042] Mix modified nano-zinc oxide particles, modified nano-nickel particles, and modified silicon dioxide in a mass ratio of 4:0.5:2 to form mixed particles, mix the mixed particles with acetone and water to form a suspension, and mix 1g of mixed particles with Mix 20ml of acetone aqueous solution, the volume of acetone in the acetone aqueous solu...

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Abstract

The invention belongs to the technical field of coating products and relates to a superhydrophobic coating and a preparation method thereof. The coating is formed by successively coating a priming paint, a finishing coat and a hydrophobic layer, wherein the finishing coat is an acrylic acid finish; and the hydrophobic layer is formed by spraying a suspension formed by mixing modified nano-zinc oxide, modified nickel nanoparticles and modified silicon dioxide according to the mass ratio of (1-4): (0.5-1): (2-3). The prepared coating is mainly resistant to marine microbial pollution and has goodwear resistance and super-hydrophobic performance.

Description

technical field [0001] The invention belongs to the technical field of coating products, and in particular relates to a superhydrophobic coating and a preparation method thereof. Background technique [0002] Surface wettability is an important characteristic of a solid surface. The surface wettability is measured by the contact angle between a solid surface and a liquid. Generally, a surface with a contact angle with water greater than 150° and a roll angle less than 10° is called a superhydrophobic surface. Super-hydrophobic surfaces are very common in nature. In the life we ​​are familiar with, the lotus leaf's "out of the mud without staining" is a super-hydrophobic surface. In addition, water striders and dragonfly wings also have the same characteristics. It is because the surface has many micro-nano structures. Applying the superhydrophobic surface to the hull of the ship can reduce the resistance of water, and can also achieve the effect of antifouling and anticorro...

Claims

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Application Information

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IPC IPC(8): C09D1/00C09D187/00C09D133/00B05D3/00B05D5/08B05D7/00B05D7/24
CPCB05D3/002B05D5/08B05D7/24B05D7/587C08K2003/2293C08K2003/2296C08K2201/011C09D1/00C09D133/00C09D187/00C08K9/06C08K3/22
Inventor 李长全曹镇君欧军飞王法军薛名山李文
Owner JIANGSU UNIV OF TECH
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