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Application of a graphene oxide composite polymer material in anti-corrosion coatings

A graphene composite, polymer material technology, used in anti-corrosion coatings, epoxy resin coatings, conductive coatings, etc., can solve problems such as poor anti-corrosion effect, and achieve the effects of increasing adhesion, stable performance, and solving poor solubility.

Active Publication Date: 2022-04-01
YANTAI HENGNUO CHEM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention aims at the problem of poor anticorrosion effect of existing graphene coatings, and provides an application of graphene oxide composite polymer materials in anticorrosion coatings

Method used

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  • Application of a graphene oxide composite polymer material in anti-corrosion coatings

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Effect test

Embodiment 1

[0028] A kind of application of graphene oxide composite macromolecule material in anticorrosion coating, comprises the following steps:

[0029] 1) Preparation of graphene oxide powder: immerse 10g of ground graphite powder in 200ml of concentrated nitric acid, soak at 0°C for 1-2h, cool down to -15°C, add 1ml of concentrated phosphoric acid and 40g of potassium ferrate, react at -10°C for 24h After centrifugation, the filter cake is washed with deionized water until the pH of the washing solution is 6-7, placed in a vacuum drying oven, and dried at 60°C-70°C for 4-6h to obtain graphene oxide powder;

[0030] 2) Preparation of surface-modified graphene oxide: soak the graphene oxide powder obtained in step 1) in a coupling agent at 30°C for 12-15 hours, vacuum filter after soaking, wash the filter cake with ethanol or acetone, and then Drying in a vacuum drying oven at 80°C for 6-10 hours to obtain a modified graphene oxide powder containing amino groups or isocyanate groups ...

Embodiment 2

[0037] A kind of application of graphene oxide composite macromolecule material in anticorrosion coating, comprises the following steps:

[0038] 1) Preparation of graphene oxide powder: immerse 10g of ground graphite powder in 200ml of concentrated nitric acid, soak at 0°C for 1-2h, cool down to -15°C, add 1ml of concentrated phosphoric acid and 40g of potassium ferrate, and react at 20°C for 12h Centrifuge, wash the filter cake with deionized water until the pH of the washing solution is 6-7, place it in a vacuum drying oven, and dry it at 60°C-70°C for 4-6h to obtain graphene oxide powder;

[0039] 2) Preparation of surface-modified graphene oxide: soak the graphene oxide powder obtained in step 1) in a coupling agent at 30°C for 12-15 hours, vacuum filter after soaking, wash the filter cake with ethanol or acetone, and then Drying in a vacuum drying oven at 80°C for 6-10 hours to obtain a modified graphene oxide powder containing amino groups or isocyanate groups on the surf...

Embodiment 3

[0046] A kind of application of graphene oxide composite macromolecule material in anticorrosion coating, comprises the following steps:

[0047] 1) Preparation of graphene oxide powder: immerse 10g of ground graphite powder in 200ml of concentrated nitric acid, soak at 0°C for 1-2h, cool down to -15°C, add 1ml of concentrated phosphoric acid and 40g of potassium ferrate, and react at 60°C for 0.5h After centrifugation, the filter cake is washed with deionized water until the pH of the washing solution is 6-7, placed in a vacuum drying oven, and dried at 60°C-70°C for 4-6h to obtain graphene oxide powder;

[0048] 2) Preparation of surface-modified graphene oxide: soak the graphene oxide powder obtained in step 1) in a coupling agent at 30°C for 12-15 hours, vacuum filter after soaking, wash the filter cake with ethanol or acetone, and then Drying in a vacuum drying oven at 80°C for 6-10 hours to obtain a modified graphene oxide powder containing amino groups or isocyanate gro...

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Abstract

The invention discloses an application of a graphene oxide composite polymer material in an anti-corrosion coating, which comprises the steps of preparing the graphene oxide composite polymer anti-corrosion coating, painting and the like. The graphene oxide composite polymer anti-corrosion coating of the present invention has stable performance, salt spray resistance, good thermal and chemical stability, strong adhesion to the substrate, good wear resistance, and the graphite surface contains oxygen-containing groups such as carboxyl hydroxyl groups and isocyanate base, can form a stable in-situ composite colloid with the curing agent, can be uniformly and stably dissolved in the liquid amine chain extender, and can be better dissolved in the polymer coating, and can be extended by increasing or decreasing the liquid amine in the mixed slurry The ratio of the agent adjusts the curing time.

Description

technical field [0001] The invention relates to the field of coatings, in particular to the application of a graphene oxide composite polymer material in anti-corrosion coatings. Background technique [0002] Corrosion problems have attracted great attention from all over the world. According to statistics, the world's annual economic loss due to corrosion accounts for about 2%-4% of the national economic output, and the annual loss due to corrosion in my country accounts for about 5% of the national output. Therefore, the corrosion problem is an urgent need for us. solved problem. [0003] Graphene is a new two-dimensional (2D) layered material with a single-layer sheet structure composed of carbon atoms. It is a planar film with a hexagonal honeycomb lattice composed of C atoms with sp2 hybrid orbitals. There are 3 σ bonds in each crystal lattice, which are very tightly connected to form a stable regular hexagonal structure, and the π bonds perpendicular to the crystal pl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D7/62C09D5/08C09D5/24C09D175/08C09D163/00C09D175/02
CPCC09D5/08C09D5/24C09D7/62C09D175/08C09D163/00C09D175/02C08K2003/2241C08K9/04C08K3/042C08K3/22C08K3/34
Inventor 任朋成
Owner YANTAI HENGNUO CHEM TECH CO LTD
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