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Super-hydrophobic coating as well as preparation method and application thereof

A technology of super-hydrophobic coating and hydrophobic nano-technology, which is applied in coatings, antifouling/underwater coatings, devices for coating liquid on the surface, etc., can solve the problem of low binding force, achieve good adhesion and durability, The preparation method is simple and the nanostructure is uniform

Pending Publication Date: 2021-06-22
GUANGDONG MIDEA WHITE HOME APPLIANCE TECH INNOVATION CENT CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method uses positively charged polymer nanospheres mixed with negatively charged silica nanoparticles to construct a raspberry structure by means of electrostatic self-assembly. The coating is only hydrophobic rather than superhydrophobic, so it is also It needs to be further treated with a hydrophobic treatment agent to obtain a super-hydrophobic coating. In addition, the coating also has defects such as low binding force

Method used

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  • Super-hydrophobic coating as well as preparation method and application thereof

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Embodiment 1

[0048] The present embodiment provides a kind of preparation method of superhydrophobic coating, comprising:

[0049] (1) Preparation of coating:

[0050] In terms of mass fraction, the formula is as follows:

[0051] Heptadecafluorodecyltrimethoxysilane modified nano-silica with a particle size of about 200nm 1%; polystyrene microspheres with a particle size of about 200nm 5%; water 94%;

[0052] Among them, the nano-silica modified by heptadecafluorodecyltrimethoxysilane is prepared by the following method: 2 mL of silica sol with a particle size of about 200 nm is added to 40 mL of ethanol solution, and then 0.2% of ten Heptafluorodecyltrimethoxysilane was prepared by reacting for 10h.

[0053] Among them, polystyrene microspheres were prepared by adding 3 mL of styrene monomer into 200 mL of ethanol solution, heating to 70°C, adding 30 mL of potassium persulfate aqueous solution with a mass fraction of 0.1%, and reacting for 24 hours.

[0054] (2) Preparation of the coa...

Embodiment 2

[0057] The present embodiment provides a kind of preparation method of superhydrophobic coating, comprising:

[0058] (1) Preparation of coating:

[0059] In terms of mass fraction, the formula is as follows:

[0060] 1% of 3-(trimethoxysilyl) propyl methacrylate modified nano-silica with a particle diameter of about 200nm; 1% of organic silicon microspheres with a particle diameter of about 400nm; and 98% of ethanol.

[0061] Among them, methacrylate-3-(trimethoxysilyl)propyl ester modified nano-silica is prepared by the following method: add 2mL of silica sol with a particle size of about 200nm into 80mL of ethanol solution, and then add 3-(trimethoxysilyl)propyl methacrylate with a mass fraction of 1% was prepared by reacting for 18 hours.

[0062] Among them, organosilicon microspheres with a particle size of about 400 nm were purchased from Momentive, and the model was Tospearl 120.

[0063] (2) Preparation of coating: dip-coat the coating prepared in step (1) onto the...

Embodiment 3

[0065] The present embodiment provides a kind of preparation method of superhydrophobic coating, comprising:

[0066] (1) Preparation of coating:

[0067] In terms of mass fraction, the formula is as follows:

[0068] 5% of nano aluminum oxide modified by heptadecafluorodecyltrimethoxysilane with a particle diameter of about 400nm; 1% of polymethyl methacrylate microspheres with a particle diameter of about 800nm; and 94% of ethanol.

[0069] Wherein, heptadecafluorodecyltrimethoxysilane modified nano-alumina is prepared by the following method: add 2mL heptadecafluorodecyltrimethoxysilane dilution solution in 100mL ethanol solvent, add dropwise acid aqueous solution to pH The value is 3 to 4, hydrolyzed at room temperature for 1 hour, adding 2g of 400nm nano-aluminum oxide into the solution, heating it in a water bath to 80°C, reacting for a certain period of time, filtering, washing with toluene, and vacuum drying at 60°C for 24 hours.

[0070] Wherein, the polymethyl meth...

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Abstract

The invention belongs to the technical field of functional materials, and particularly relates to a super-hydrophobic coating as well as a preparation method and application thereof. The super-hydrophobic coating is of a three-dimensional porous nano composite structure. The three-dimensional porous nano composite structure comprises a construction unit and a bonding unit, wherein the construction unit is formed by inorganic hydrophobic nanoparticles; the bonding unit is formed by hydrophobic polymer nano microspheres; and the inorganic hydrophobic nano-particles and the hydrophobic polymer nano-microspheres are mutually connected to form uniform pores. The durable super-hydrophobic coating of a novel composite structure is researched and designed from the essence of the super-hydrophobic coating, the durable super-hydrophobic coating is not limited by a spraying process and can be treated through a dip-coating or roll-coating process, coating of coiled materials and special-shaped parts can be achieved, the comprehensive performance of the obtained coating is good, and the application field of the coating is expanded.

Description

technical field [0001] The invention belongs to the technical field of functional materials, and in particular relates to a superhydrophobic coating and a preparation method and application thereof. Background technique [0002] Due to its special surface structure, superhydrophobic coatings have many potential applications, such as anti-fouling, anti-fog, easy to clean, waterproof, anti-corrosion, drag reduction, anti-icing, anti-frost, etc. Although superhydrophobic coatings have received much attention in academia, the coatings have had little application in industry. The reason is mainly because the existing superhydrophobic coatings have problems of poor stability and poor durability, which cannot meet the actual needs of industrial applications. [0003] For the problems of superhydrophobic coatings, the usual solution is to increase the durability of superhydrophobic coatings by increasing the thickness of superhydrophobic coatings, and to increase the bond between s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D125/06C09D183/04C09D133/12C09D7/62C09D5/16
CPCC09D125/06C09D183/04C09D133/12C09D7/62C09D5/1687C08K2201/011C08K2201/003C08K2003/2227C08K2003/2275C08K9/06C08K3/36C08K3/22B05D2601/20B05D2401/32B05D2401/10B05D5/08B05D1/18B05D1/28C09D5/1681C09D7/70C09D7/65C09D7/68C08K2201/013C09D7/45C09D7/63C08K2201/005C09D5/00
Inventor 王立莹姚俊红严卓华陈龙葛邓腾赵一平俞婷
Owner GUANGDONG MIDEA WHITE HOME APPLIANCE TECH INNOVATION CENT CO LTD
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