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Method for rapidly preparing underwater super-oleophobic anticorrosive coating

An underwater super oleophobic and anti-corrosion coating technology, applied in the direction of anti-corrosion coatings, coatings, epoxy resin coatings, etc., can solve the problems of poor chemical stability, poor salt resistance, complicated preparation process, etc., to improve mechanical stability , solve the effect of long preparation time and reduce capillary action

Inactive Publication Date: 2021-01-01
NORTHEAST GASOLINEEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This simple, fast, and large-scale preparation method solves the problems of long preparation time, complicated preparation process, and poor chemical stability (poor acid and alkali resistance, poor salt resistance) of underwater superoleophobic coatings.

Method used

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  • Method for rapidly preparing underwater super-oleophobic anticorrosive coating

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Experimental program
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Effect test

Embodiment 1

[0017] A method for rapidly preparing an underwater super-oleophobic anti-corrosion coating, weighing 7g of F51 epoxy resin and 1g of cardanol-modified amine epoxy curing agent, and ultrasonically mixing and stirring the two in 100g of ethyl acetate The mixed solution of epoxy resin and curing agent is sprayed on the glass sheet with a spray gun, and it is pre-cured at 80 ℃ for 3 minutes at once, and then the hydrophilic nano particle silicon dioxide dispersion liquid of 1g is sprayed on the epoxy resin coating with a spray gun. Finally, put the entire coating in an oven at 80 °C for 10 minutes to cure and take it out to obtain an underwater super-oleophobic coating.

Embodiment 2

[0019] A method for rapidly preparing an underwater super-oleophobic anti-corrosion coating, weighing 8g of F51 epoxy resin and 2g of cardanol-modified amine epoxy curing agent, and ultrasonically mixing and stirring the two in 120g of ethyl acetate ; Spray the mixed solution of epoxy resin and curing agent on the glass sheet with a spray gun, immediately precure it at 80 ℃ for 3 minutes, then spray the hydrophilic nano particle silicon dioxide dispersion of 1.5g on the epoxy resin with a spray gun Finally, put the entire coating in an oven at 80°C for 10 minutes to cure and take it out to obtain an underwater super-oleophobic coating. The contact angle of the underwater oil droplet is as follows figure 1 shown.

Embodiment 3

[0021] A method for rapidly preparing an underwater super-oleophobic anti-corrosion coating, weighing 10g of F51 epoxy resin and 3g of cardanol-modified amine epoxy curing agent, and ultrasonically mixing and stirring the two in 150g of ethyl acetate ; The mixed solution of epoxy resin and curing agent is sprayed on the glass sheet with a spray gun, and it is pre-cured at 80 ℃ for 4 minutes at once, and then the hydrophilic nano particle silicon dioxide dispersion of 2g is sprayed on the epoxy resin coating with a spray gun Finally, put the entire coating in an oven at 80 °C for 10 minutes to cure and take it out to obtain an underwater super-oleophobic coating.

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Abstract

The invention belongs to the technical field of corrosion prevention, and particularly relates to a method for rapidly preparing an underwater super-oleophobic anticorrosive coating. The method comprises the following steps: 1, preparing an epoxy coating: taking 7-10 parts by weight of epoxy resin and 1-3 parts by weight of a curing agent, mixing, ultrasonically stirring, dissolving in 100-150 parts by weight of an organic solvent, spraying the obtained epoxy solution on a substrate on a heating table, and pre-curing for 3-4 minutes to form the epoxy coating; and 2, preparing the underwater super-oleophobic coating: spraying 1-2 parts by weight of hydrophilic nanoparticles on the epoxy coating, and curing the epoxy coating in a baking oven at the temperature of 60-130 DEG C after sprayingto prepare the underwater super-oleophobic coating. According to the preparation method, the curing agent with a hydrophobic chain segment is selected to be subjected to a curing reaction with epoxy resin, meanwhile, and the hydrophilic nanoparticles are bonded to obtain the underwater super-oleophobic coating within 20 min. The problems that existing underwater super-oleophobic coating is long inpreparation time, complex in preparation process and poor in chemical stability are solved.

Description

Technical field: [0001] The invention belongs to the technical field of anti-corrosion, and in particular relates to a method for rapidly preparing an underwater super-oleophobic anti-corrosion coating. Background technique: [0002] Underwater superoleophobic coatings have attracted extensive attention from researchers because of their broad application prospects in petroleum transportation, oil droplet manipulation, antifouling materials, and oil-water separation. At present, the preparation of most underwater superoleophobic coatings is not only time-consuming and complicated, but the superhydrophilicity of the coating surface makes it easy to absorb water, which accelerates the corrosion of the substrate, resulting in a decrease in the underwater mechanical strength of the coating, which is easy to be removed from the surface. The surface of the substrate is peeled off, and its non-resistance to seawater and acid and alkali greatly limits its development. Therefore, how...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/38C09D163/00C09D163/02C09D5/08C09D7/61C09D1/00
CPCC03C17/38C09D163/00C09D5/08C09D7/61C09D1/00C03C2217/76
Inventor 刘发堂杜宏中齐宇航刘战剑王池嘉汪怀远
Owner NORTHEAST GASOLINEEUM UNIV
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