Super-hydrophobic coating, super-hydrophobic coating layer as well as preparation method and application of super-hydrophobic coating layer

A super-hydrophobic coating and super-hydrophobic technology, applied in the direction of anti-fouling/underwater coatings, coatings, and devices for coating liquid on the surface, can solve the problem of insufficient adhesion between coatings and substrates and affect coating products Durability and other issues, to achieve the effect of wide application range and good dispersion

Inactive Publication Date: 2019-02-22
武汉疏能新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the adhesion of the coatings prepared by these methods to the substrate is not strong enough, which affects the durability of the coated products

Method used

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  • Super-hydrophobic coating, super-hydrophobic coating layer as well as preparation method and application of super-hydrophobic coating layer
  • Super-hydrophobic coating, super-hydrophobic coating layer as well as preparation method and application of super-hydrophobic coating layer
  • Super-hydrophobic coating, super-hydrophobic coating layer as well as preparation method and application of super-hydrophobic coating layer

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preparation example Construction

[0050] The embodiment of the present invention also relates to a method for preparing a superhydrophobic coating, comprising the following steps:

[0051] 1) Add ammonia water and silicate to an alcohol solvent, stir, react, and age to prepare a dispersion of silica nanoparticles; add low surface energy fluorine-free to the dispersion of silica nanoparticles Organic matter, prepared super-hydrophobic silica nano-functional liquid. Wherein, the alcoholic solvent is one or more of ethanol, methanol, and isopropanol. The volume ratio of the ammonia water to the alcohol solvent is between 1:5 and 1:20. The silicate is one or both of tetrabutyl orthosilicate and tetraethyl orthosilicate. The aging time is 1-7 days. The low surface energy fluorine-free organics include methyltriethoxysilane, methyltrimethoxysilane, polydimethylsiloxane, propyltrimethoxysilane, octyltriethoxysilane, hexamethoxysilane One or more of disilazane, dodecyltrimethoxysilane, dodecyltriethoxysilane, hexa...

Embodiment 1

[0057] Embodiment 1: the preparation method of superhydrophobic coating

[0058] (1) Preparation of superhydrophobic silica nanoparticles functional liquid: add 5.5ml of concentrated ammonia water to 50ml of methanol, heat up to 40°C, then add 8ml of tetrabutyl orthosilicate, stir for 3h, cool to room temperature, and age 1 day. In the stirring state, add 10ml of hexamethyldisilazane to the above dispersion system, and react for 4 hours to obtain the superhydrophobic silica nano-functional liquid.

[0059] (2) Preparation of primer: Mix silicone resin, acrylic resin, nylon powder, barium sulfate powder, ethyl acetate, and polyacrylate, and stir and disperse at high speed at room temperature to obtain primer coating. The mass percentages of the above components are: silicone resin:acrylic resin:barium sulfate powder:ethyl acetate:polyacrylate:nylon powder=50:10:20:10:3:7.

[0060] (3) Preparation of superhydrophobic coating: add isocyanate to the primer prepared in step (2) u...

Embodiment 2

[0061] Embodiment 2: the preparation method of superhydrophobic coating

[0062] (1) Preparation of superhydrophobic silica nanoparticle functional liquid: add 5.5ml of concentrated ammonia water to 50ml of ethanol, heat up to 40°C, then add 8ml of tetraethyl orthosilicate, stir for 3h, cool to room temperature, and age 1 day. In the stirring state, add 10 ml of methyltriethoxysilane to the above dispersion system, and react for 4 hours to obtain the superhydrophobic silica nano-functional liquid.

[0063] (2) Preparation of primer: Mix silicone resin, acrylic resin, nylon powder, barium sulfate powder, butyl acetate, and polyacrylate, and stir and disperse at high speed at room temperature to obtain primer coating. The mass percentages of the above components are: silicone resin: acrylic resin: barium sulfate powder: butyl acetate: polyacrylate: nylon powder = 50:10:20:10:3:7.

[0064] (3) Preparation of superhydrophobic coating: add isocyanate to the primer prepared in ste...

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Abstract

The invention discloses a super-hydrophobic coating, a super-hydrophobic coating layer as well as a preparation method and application of the super-hydrophobic coating layer, relating to the technicalfield of hydrophobic materials. The preparation method comprises the following steps: adding ammonia water and silicate ester into an alcohol solvent, stirring for reaction, and aging, so as to obtain dispersion liquid of silicon dioxide nano-particles; adding a low-surface-energy fluoride-free organic matter into the dispersion liquid of the silicon dioxide nano-particles, so as to obtain super-hydrophobic silicon dioxide functional nano-liquid; mixing organic silicon resin, acrylic resin, nylon powder, barium sulfate powder, a diluent and a dispersing agent, so as to prepare a primer coating; adding a curing agent into the primer coating, coating the surface of a base material with the primer coating, so as to obtain a primer; and spraying the super-hydrophobic silicon dioxide functional nano-liquid to the surface of the primer, and drying, so as to obtain the super-hydrophobic coating layer. By coating the surface of glass, metal, ceramic or plastic with the super-hydrophobic coating layer, the hydrophobic and anti-pollution properties of the material are improved.

Description

technical field [0001] The invention relates to the technical field of hydrophobic materials, in particular to a superhydrophobic coating, a coating and a preparation method and application thereof. Background technique [0002] Superhydrophobic film refers to a film with a static contact angle of more than 150 degrees and a rolling angle of less than 10 degrees with water droplets. It has functions such as waterproof, self-cleaning, and anti-fouling, so it has broad application prospects in daily life and industrial fields. In 2002, Jiang Lei's research group confirmed that the essential reason for the superhydrophobic properties of lotus leaves and other surfaces is the synergistic effect of their surface micro-nano rough structure and low surface energy substances (Adv Mater 2002; 14:1857-1860). The bionic superhydrophobic surface utilizes the bionic superhydrophobic self-cleaning principle of lotus leaves and cicada wings, etc., by modifying low surface energy components...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D1/00C09D5/16C09D7/61C09D7/63C09D7/65B05D7/14B05D7/16B05D7/24B05D7/00H01B17/50
CPCB05D7/14B05D7/16B05D7/24B05D7/53C08K2003/3045C08L2205/035C09D1/00C09D5/002C09D5/1618C09D5/1656C09D7/61C09D7/63C09D7/65C09D183/04H01B17/50C08L33/00C08L33/04C08L77/00C08K3/30
Inventor 陈智
Owner 武汉疏能新材料有限公司
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