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Anti-corrosion and anti-icing self-cleaning super-hydrophobic coating as well as preparation method and application thereof

A super-hydrophobic coating and self-cleaning technology, used in anti-corrosion coatings, polyurea/polyurethane coatings, coatings, etc., can solve the hidden dangers of the environment, enterprise production, people's property and life safety, affect the safe operation of various equipment and components, Problems such as metal surface failure

Pending Publication Date: 2021-09-10
NORTHWEST UNIV(CN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Corrosion will damage the metal surface and cause failure, which will bring serious hidden dangers to the environment, enterprise production, people's property and life safety
Secondly, in the alpine region, water vapor adheres to and freezes on the surface of metal equipment, which seriously affects the safe operation of various equipment and components.

Method used

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  • Anti-corrosion and anti-icing self-cleaning super-hydrophobic coating as well as preparation method and application thereof
  • Anti-corrosion and anti-icing self-cleaning super-hydrophobic coating as well as preparation method and application thereof
  • Anti-corrosion and anti-icing self-cleaning super-hydrophobic coating as well as preparation method and application thereof

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preparation example Construction

[0029] The invention provides a method for preparing an anti-corrosion and anti-icing self-cleaning superhydrophobic coating, comprising the following steps:

[0030] SiO 2 Perform the first mixing with 1H,1H,2H,2H-perfluorodecyltrimethoxysilanol solution, and modify it to obtain a modified silica dispersion;

[0031] The polyester thermoplastic polyurethane elastomer and the organic solvent are mixed for the second time to obtain the polyester thermoplastic polyurethane elastomer sol;

[0032] The modified silicon dioxide dispersion liquid, the polyester thermoplastic polyurethane elastomer sol and the polyurethane curing agent are mixed for a third time and doped to obtain an anti-corrosion, anti-icing and self-cleaning super-hydrophobic coating.

[0033] Unless otherwise specified, the present invention has no special requirements on the sources of the raw materials used for the preparation, and commercially available products well known to those skilled in the art can be ...

Embodiment 1

[0058] 2g nano-SiO 2 Particles (15±5nm) were added to 100mL of 1wt% 1H,1H,2H,2H-perfluorodecyltrimethoxysilane absolute ethanol solution and magnetically stirred for 2h to obtain a modified silica dispersion; Ester-type thermoplastic polyurethane elastomer was added to 60mL N,N-dimethylformamide, and magnetically stirred at 60°C for 2h until the polyester-type thermoplastic polyurethane elastomer rubber was completely dissolved to obtain polyester-type thermoplastic polyurethane elastomer sol; then The modified silica dispersion, the polyester thermoplastic polyurethane elastomer sol and 2 g of isocyanate curing agent were stirred at room temperature for 30 min to obtain an anti-corrosion, anti-icing and self-cleaning superhydrophobic coating.

Embodiment 2

[0060] 2g nano-SiO 2 Particles (15±5nm) were added to 150mL of 1wt% 1H,1H,2H,2H-perfluorodecyltrimethoxysilane absolute ethanol solution and magnetically stirred for 2h to obtain a modified silica dispersion; Ester-type thermoplastic polyurethane elastomer was added to 30mL N,N-dimethylformamide, and magnetically stirred at 60°C for 2h until the polyester-type thermoplastic polyurethane elastomer rubber was completely dissolved to obtain polyester-type thermoplastic polyurethane elastomer sol; then The modified silicon dioxide dispersion, the polyester thermoplastic polyurethane elastomer sol and 1.5 g of isocyanate curing agent were stirred at room temperature for 30 minutes to obtain an anti-corrosion, anti-icing and self-cleaning superhydrophobic coating.

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Abstract

The invention belongs to the technical field of metal corrosion prevention, and particularly relates to an anti-corrosion and anti-icing self-cleaning super-hydrophobic coating as well as a preparation method and application thereof. According to the invention, 1H, 1H, 2H, 2H-perfluorodecyl trimethoxysilane is adopted to carry out hydrophobic modification on SiO2, the surface energy of SiO2 is reduced, and then modified SiO2 is doped with a polyester type thermoplastic polyurethane elastomer to prepare the anti-corrosion anti-icing self-cleaning super-hydrophobic coating with good hydrophobic performance. When the coating is coated on the surface of metal equipment, the icing time of the surface of the metal equipment can be effectively prolonged, the icing resistance of the surface of the metal equipment can be improved, the corrosion resistance of a metal substrate in acid, alkali and salt corrosive media can be improved, the coating has good wear resistance and chemical stability, the safety risk of equipment and components is reduced, and the service life is prolonged.

Description

technical field [0001] The invention belongs to the technical field of metal anti-corrosion, and in particular relates to an anti-corrosion, anti-icing self-cleaning superhydrophobic coating and a preparation method and application thereof. Background technique [0002] Metal equipment, components, pipes and pressure vessels play an important role in industrial production, and most of the damage of metal equipment is caused by corrosion, especially metal equipment in contact with corrosive media such as acid, alkali, and salt. According to statistics, the iron and steel equipment scrapped due to corrosion is equivalent to 30% of the annual output. Corrosion will cause damage to the metal surface and cause failure, which will bring serious hidden dangers to the environment, enterprise production, people's property and life safety. Secondly, in the alpine region, water vapor adheres to and freezes on the surface of metal equipment, seriously affecting the safe operation of va...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/06C09D5/08C09D7/62
CPCC09D175/06C09D5/08C09D7/62C08K9/06C08K3/36
Inventor 胡军刘喻波宋卫兵谭远薛静静石佳坤
Owner NORTHWEST UNIV(CN)
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