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

A technology of super-hydrophobic coating and super-hydrophobic coating, applied in paper coatings, coatings, coatings without pigments, etc., can solve the problems of reduced application sites, high system viscosity, reduced coating transparency, etc., and achieve the effect of easy construction

Active Publication Date: 2021-08-24
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the high content of inorganic powder additives makes the adhesion between the polymer emulsion and the substrate worse, affects the film-forming performance of the original polymer emulsion, and also causes the viscosity of the system to be too high, and the coating process

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] This embodiment has prepared a kind of super amphiphobic coating, and specific preparation process is:

[0088] First add 20ml of isopropanol, 0.3g of titanium dioxide (100nm), and 3ml of ethanol cyanoacrylate to 5g of dimethyldimethoxysilane in sequence, and stir for 3 minutes to disperse.

[0089] When using the super-hydrophobic coating of this embodiment, a uniform mixed solution can be coated on the surface of the substrate by spin coating.

[0090] Air-dry at 70°C for 2 min, then rinse the coating surface with distilled water and ethanol, and air-dry for 5 min at room temperature to obtain a super-hydrophobic coating.

Embodiment 2

[0092] This embodiment has prepared a kind of superhydrophobic coating, and specific preparation process is:

[0093] First add 20ml of isopropanol, 2g of methyltrimethoxysilane, 0.5g of silicon dioxide (100nm), 5ml of ethanol cyanoacrylate into 5g of dimethyldichlorosilane, stir and disperse for 3min, and spray on the glass The surface of the substrate is coated with a uniformly mixed mixture.

[0094] Air-dry at 50°C for 5 minutes, then rinse the coating surface with distilled water and ethanol, and air-dry at 20°C for 3 minutes to obtain a super-hydrophobic coating.

Embodiment 3

[0096] This embodiment has prepared a kind of superhydrophobic coating, and specific preparation process is:

[0097] First add 10ml of toluene, 0.6g of silicon dioxide (100nm), and 1.2g of epoxy acrylate to 5g of dimethyldichlorosilane in sequence, stir and disperse for 3 minutes, and coat and mix evenly on the surface of the substrate by dip coating liquid.

[0098] Air-dry at 25°C for 5 minutes, then rinse the coating surface with distilled water and ethanol, and air-dry at 20°C for 10 minutes to obtain a super-hydrophobic coating.

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Abstract

The invention provides a super-hydrophobic coating as well as a preparation method and application thereof. The coating can be smeared on the surfaces of flexible or rigid materials, can also be smeared on flat or rough substrates made of plastics, metals and the like, can realize the functions of self-cleaning, water resistance, freezing resistance, fog resistance, fluid resistance reduction and corrosion resistance, and can be widely applied to the fields of buildings, household appliances, traffic transportation, clothing, electronic devices, liquid transportation and the like.

Description

technical field [0001] The invention belongs to the technical field of functional materials, and in particular relates to a superhydrophobic coating and its preparation method and application. Background technique [0002] The preparation of superhydrophobic coatings started from people's understanding and research on the extreme wetting phenomena in nature such as lotus leaves, rose petals, and desert beetles. Therefore, it has a wide range of application values ​​in the coating of glass, ceramic tile cement, textiles, metal and other substrates. The preparation of superhydrophobic surfaces usually starts from two aspects, one is to use low surface energy substances, such as polydimethylsiloxane, fluorine-containing compounds, etc.; the other is to construct a micro-nano composite rough structure. [0003] In related technologies, the process of preparing a super-hydrophobic surface is usually complex and time-consuming. For example, in some processes, the substrate needs ...

Claims

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Application Information

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IPC IPC(8): C09D4/02C09D7/61C09D4/00C08G77/04C09D183/04D21H19/32D21H19/20D21H19/14D06N3/12D06N3/04D06N3/00
CPCC09D4/00C09D7/61C09D7/67C08G77/04C09D183/04D21H19/32D21H19/20D21H19/14D06N3/042D06N3/128D06N3/0063D06N2209/142
Inventor 汪黎明杨金婵
Owner GUANGZHOU UNIVERSITY
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