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A preparation method of a stable liquid impact resistant superamphiphobic coating

A liquid-resistant, super-amphiphobic technology, applied in coatings and other directions, can solve problems such as poor mechanical stability and poor resistance to low surface tension liquid impact, achieve excellent liquid impact resistance, improve liquid impact resistance, and increase contact resistance. The effect of branch density

Active Publication Date: 2022-02-01
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a preparation method of a stable liquid impact-resistant superamphiphobic coating, to overcome the defects of poor low surface tension liquid impact resistance and poor mechanical stability of the existing superamphiphobic coating

Method used

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  • A preparation method of a stable liquid impact resistant superamphiphobic coating
  • A preparation method of a stable liquid impact resistant superamphiphobic coating
  • A preparation method of a stable liquid impact resistant superamphiphobic coating

Examples

Experimental program
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Effect test

Embodiment 1

[0035] (1) Prepare an acetone solution with a mass fraction of 1% α-butyl cyanoacrylate, and spray the solution onto the surface of the glass substrate, and control the relative humidity of the environment to 40% for polymerization and steam-induced phase separation to obtain poly-α - butyl cyanoacrylate stabilizes the microstructure;

[0036] (2) Add 1mL of ammonia water to 50mL of ethanol solution and stir evenly, then put the polybutyl α-cyanoacrylate stabilized microstructure (substrate) into the solution, and then add 0.25g of tetraethyl orthosilicate dropwise, Stir continuously for 10 minutes, then add 0.25g (3-mercaptopropyl)trimethoxysilane dropwise, stir at room temperature for 12 hours, take it out, wash with ethanol, and finally place it in a drying oven at 60°C for 1 hour to obtain a mercaptolated micro-nano composite structural surface;

[0037] (3) Disperse 0.5g of 2-(perfluorodecyl)ethyl methacrylate into 50mL of ethanol solution, place the surface of the merca...

Embodiment 2

[0039] (1) Prepare a tetrahydrofuran solution of ethyl α-cyanoacrylate with a mass fraction of 2.5%, and spray the solution onto the surface of the ceramic substrate, and control the relative humidity of the environment at 50% for polymerization and steam-induced phase separation to obtain poly-α - Ethyl cyanoacrylate stabilizes the microstructure;

[0040](2) Add 0.5mL ammonia water to 50mL ethanol solution and stir evenly, then put poly-ethyl α-cyanoacrylate stabilized microstructure into the solution, then add 0.2g tetraethyl orthosilicate dropwise, and stir continuously for 30min. Add 0.2 g of (3-mercaptopropyl)trimethoxysilane dropwise, stir at room temperature for 18 hours, take out the substrate and wash it with ethanol, and finally place it in a drying oven at 70°C for 2 hours to obtain a mercaptolated micro-nano composite structure surface;

[0041] (3) Disperse 1.0g of 2-(perfluorodecyl)ethyl methacrylate into 50mL of ethanol solution, then place the surface of the t...

Embodiment 3

[0043] (1) A tetrahydrofuran solution of α-methyl cyanoacrylate with a mass fraction of 1.5% was prepared, and the solution was sprayed onto the surface of an aluminum alloy substrate, and the relative humidity of the environment was controlled at 70% for polymerization and steam-induced phase separation to obtain a polymer α-methyl cyanoacrylate stabilizes the microstructure;

[0044] (2) Add 2 mL of ammonia water to 50 mL of ethanol solution and stir evenly, then put poly-α-methyl cyanoacrylate stabilized microstructure into the solution, then add 0.6 g of tetraethyl orthosilicate dropwise, stir continuously for 10 min, and then Add 0.6g (3-mercaptopropyl)trimethoxysilane dropwise, stir at room temperature for 24 hours, take out the substrate and wash it with ethanol, and finally place it in a drying oven at 70°C for 2 hours to obtain a mercaptolated micro-nano composite structure surface;

[0045] (3) Disperse 1.5g of 2-(perfluorododecyl)ethyl methacrylate into 50mL of etha...

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Abstract

The invention discloses a preparation method of a stable liquid-impact-resistant super-amphiphobic coating. First, an α-cyanoacrylate solution dissolved in a good solvent is sprayed onto the surface of a substrate, and polymerization and steam are carried out by controlling the relative humidity of the environment. Induced phase separation to obtain a poly-α-cyanoacrylate-stabilized microstructure; and then using ethyl orthosilicate and a mercaptosilane coupling agent to carry out thiolation surface modification of the poly-α-cyanoacrylate-stabilized microstructure; and then using The thiol-ene click reaction was triggered by UV light, and the perfluoroacrylate monomer was grafted onto the surface of the thiolated micro-nano composite structure to obtain a stable liquid-impact-resistant super-amphiphobic coating. The super-amphiphobic coating prepared by the invention has excellent super-amphiphobic performance, liquid impact resistance and mechanical stability, is suitable for various substrates, and has wide application prospects.

Description

technical field [0001] The invention relates to the preparation of a super-amphiphobic coating, in particular to a preparation method of a stable liquid-impact-resistant super-amphiphobic coating, and belongs to the field of super-amphiphobic coatings. Background technique [0002] Superamphiphobic surface is a kind of surface with micro-nano multiple composite structure and extremely low surface energy, which can not only repel water droplets, but also have excellent repelling effect on common oil droplets and even alkanes with extremely low surface energy. The superamphiphobic surface has excellent properties such as self-cleaning, antifouling, antibacterial and anticorrosive properties, and has extremely broad application prospects in many fields such as daily life and industry. However, at present, the preparation of superamphiphobic surfaces is relatively difficult, the development is slow, and there are disadvantages such as poor superamphiphobic properties and poor me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D4/04C09D183/08C09D4/02
CPCC09D4/00C09D183/08C08G77/392
Inventor 李步成张俊平魏晋飞杨燕飞李凌霄
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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