Super-amphiphobic coating with seawater corrosion resistance and preparation process thereof

A corrosion-resistant coating and seawater-resistant technology, used in coatings, anti-corrosion coatings, epoxy resin coatings, etc., can solve problems such as aging failure, poor stability, and damage to the surface microstructure, and achieve improved salt corrosion resistance and salt resistance. Corrosion improvement and salt corrosion resistance

Inactive Publication Date: 2019-03-08
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although the research on super-amphiphobic surfaces has developed rapidly in recent years, a variety of super-amphiphobic surface fabrication technologies have been developed, and many amphiphobic surfaces with excellent performance have been prepared, but there are still many problems before they can be widely used. In-depth research is needed to discuss and solve, including: (1) Poor stability, the super-amphiphobic surface has a fine rough structure, which is easily damaged by impact and friction during processing and use, especially the surface layer of many super-amphiphobic materials The microstructure of the superamphiphobic surface is easily polluted by dust, oily substances, etc. in the external environment, and it will gradually lose its superamphiphobic performance. Amphiphobic properties, but it is very difficult to clean these pollutants, the force in the cleaning process can easily lead to the destruction of the surface microstructure, and the existing methods can not completely solve the problem of aging failure; (3) the cost of preparation, the use of simple Efficient, inexpensive, and environmentally friendly preparation of superamphiphobic coatings with salt corrosion resistance is an inevitable trend in industrial production

Method used

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  • Super-amphiphobic coating with seawater corrosion resistance and preparation process thereof
  • Super-amphiphobic coating with seawater corrosion resistance and preparation process thereof
  • Super-amphiphobic coating with seawater corrosion resistance and preparation process thereof

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Experimental program
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Effect test

Embodiment 1

[0033] The preparation steps of the super-amphiphobic seawater corrosion-resistant coating are as follows:

[0034] (1) Stir the epoxy resin emulsion magnetically at a temperature of 60°C, the stirring rate is 1000r / min, the stirring time is 0.5h, and stand for 5h after stirring to fully open the resin molecular chain;

[0035] (2) Add n-butanol and N, N-dimethylacetamide to the epoxy resin emulsion obtained in step (1) to modify the epoxy resin emulsion to obtain a modified epoxy resin dilution emulsion, and then add fluorine Carbon resin, stirred for 1.5h at a stirring rate of 800r / min to obtain a resin mixture; the weight ratio of epoxy resin emulsion, n-butanol, N, N-dimethylacetamide and fluorocarbon resin is 10 :3:2:4.

[0036] (3) Mix the resin mixture obtained in step (2) with dimethyl silicone oil at a mass ratio of 1:5, then add methanol to dissolve into a jelly, and obtain a dispersion after ultrasonic dispersion for 10 minutes; the amount of methanol added is to f...

Embodiment 2

[0044] The preparation steps of the super-amphiphobic seawater corrosion-resistant coating are as follows:

[0045] (1) Magnetically stir the epoxy resin emulsion at a temperature of 80°C, the stirring rate is 1200r / min, the stirring time is 1.2h, and stand for 5h after stirring to fully open the resin molecular chain;

[0046] (2) Add n-butanol and N, N-dimethylacetamide to the epoxy resin emulsion obtained in step (1) to modify the epoxy resin emulsion to obtain a modified epoxy resin dilution emulsion, and then add fluorine Carbon resin, stirred for 2.5h at a stirring rate of 1100r / min to obtain a resin mixture; the weight ratio of epoxy resin emulsion, n-butanol, N, N-dimethylacetamide and fluorocarbon resin is 10 :3:2:4.

[0047] (3) Mix the resin mixture obtained in step (2) with simethicone at a mass ratio of 1:4, then add methanol to dissolve into a jelly, and obtain a dispersion after ultrasonic dispersion for 20 minutes; the amount of methanol added is to form Just...

Embodiment 3

[0055] The preparation steps of the super-amphiphobic seawater corrosion-resistant coating are as follows:

[0056] (1) Magnetically stir the epoxy resin emulsion at a temperature of 120°C, the stirring rate is 1400r / min, the stirring time is 2h, and stand for 5h after stirring to fully open the resin molecular chain;

[0057] (2) Add n-butanol and N, N-dimethylacetamide to the epoxy resin emulsion obtained in step (1) to modify the epoxy resin emulsion to obtain a modified epoxy resin dilution emulsion, and then add fluorine Carbon resin, stirred for 4h at a stirring rate of 1400r / min to obtain a resin mixture; the weight ratio of epoxy resin emulsion, n-butanol, N, N-dimethylacetamide and fluorocarbon resin is 10: 3:2:4.

[0058] (3) Mix the resin mixture obtained in step (2) with simethicone at a mass ratio of 1:5, then add methanol to dissolve into a jelly, and obtain a dispersion after ultrasonic dispersion for 25 minutes; the amount of methanol added is to form Just je...

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Abstract

The invention provides a super-amphiphobic coating with seawater corrosion resistance and a preparation process thereof. The preparation process comprises the steps of pretreating epoxy resin and fluorocarbon resin; mixing a cross-linking agent, a modifying agent and a nanoscale glass flake to form the super-amphiphobic coating which has high density, good salt corrosion resistance and high binding force, and has a micrometer epoxy resin plus glass flake-nanosilicon dioxide structure, wherein a micrometer sea heavy-duty anticorrosion-nanosilicon dioxide structure is constructed by emulsion-state epoxy resin and gel-state silicon dioxide, and the nanosilicon dioxide and micrometer epoxy resin particles are remodeled through block cross-linking, so that the salt corrosion resistance of the coating is remarkably improved; through the bonding reaction between sea heavy-duty anticorrosion and the silicon dioxide, each single layer of micrometer sea heavy-duty anticorrosion-nanosilicon dioxide structure has a good binding force, and each structure has a super-amphiphobic performance, so that the salt corrosion resistance of the coating is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of super-amphiphobic composite coating and marine heavy-duty anti-corrosion coating, and in particular relates to a marine heavy-duty anti-corrosion super-amphiphobic coating and a preparation process thereof. Background technique [0002] Seawater is the most abundant natural electrolyte solution, usually the salt content in seawater is 3.2-3.75%, and the pH value in seawater is between 8-8.2. The factors affecting metal corrosion in seawater can be divided into three categories: chemical factors, physical factors and biological factors. These factors are interrelated and affect each other. The corrosion situation of the marine environment can be divided into five major areas, namely the marine atmospheric area, the splash area, the tidal range area, the full immersion area and the seabed soil area. Atmospheric area on the sea: The part above sea level is more than 2 meters, and the waves cannot reach the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D163/00C09D127/12C09D7/61C09D5/08
CPCC08K2003/2206C09D5/08C09D7/61C09D7/70C09D183/04C08L63/00C08L27/12C08K13/04C08K7/00C08K3/34C08K3/36C08K3/22
Inventor 郭凯李辛庚姜波吴亚平米春旭张振岳宗立君高智悦
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY
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