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Anticorrosive paint based on magnetic particle functionalized graphene and preparation method of anticorrosive paint

A technology of magnetic particles and anti-corrosion coatings, applied in the field of coatings, can solve problems such as poor anti-corrosion performance, and achieve the effects of improving anti-corrosion performance, improving barrier performance, and increasing film-forming area

Active Publication Date: 2022-05-27
深圳石墨烯创新中心有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] For this reason, the present invention provides a kind of anti-corrosion coating based on magnetic particle functionalized graphene and preparation method thereof, to solve the problem of poor anti-corrosion performance of graphene anti-corrosion coating in the prior art

Method used

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Embodiment 1

[0027] The present embodiment provides a method for preparing an anti-corrosion coating based on magnetic particle functionalized graphene, comprising the following steps:

[0028] (1) preparation of graphene oxide: 2g flake graphite is blended with 60ml of concentrated sulfuric acid with a concentration of 98wt%, and the mixture is stirred in an ice-water bath for 1h; then 12g of potassium permanganate is added, reacted for 1h; be warming up to 40 ℃, react for 1h, and finally heat up to 90℃ and react for 1h to obtain a reaction mixture, add 400ml of deionized water into the reaction mixture in three times, then add 10ml of hydrogen peroxide with a concentration of 30%, and after the reactants are cooled, use 3 % dilute hydrochloric acid and deionized water for washing, centrifugation, and drying to obtain graphene oxide.

[0029] (2) Water-based Fe 3 O 4 Preparation of: 6.5g FeCl 3 and 2g of trisodium citrate were dissolved in 200ml of ethylene glycol, then 12g of sodium a...

Embodiment 2

[0034] The present embodiment provides a method for preparing an anti-corrosion coating based on magnetic particle functionalized graphene, comprising the following steps:

[0035](1) Preparation of graphene oxide: blend 2g graphite flakes with 60ml concentrated sulfuric acid with a concentration of 98wt%, and stir in an ice-water bath for 1h; then add 12g potassium permanganate, react for 1h; heat up to 40°C, The reaction was carried out for 1 h, and finally the temperature was raised to 90 °C for 1 h. 400 ml of deionized water was added to the reaction mixture in three times, and then 10 ml of hydrogen peroxide with a concentration of 30% was added. After the reactants were cooled, 3% dilute hydrochloric acid and deionized After washing with water, centrifugation, and drying, graphene oxide is obtained.

[0036] (2) Water-based Fe 3 O 4 Preparation of: 13g FeCl 3 and 4g of trisodium citrate were dissolved in 400ml of ethylene glycol, then 24g of sodium acetate was added a...

Embodiment 3

[0041] The present embodiment provides a method for preparing an anti-corrosion coating based on magnetic particle functionalized graphene, comprising the following steps:

[0042] (1) Preparation of graphene oxide: blend 2g graphite flakes with 60ml concentrated sulfuric acid with a concentration of 98wt%, and stir in an ice-water bath for 1h; then add 12g potassium permanganate, react for 1h; heat up to 40°C, The reaction was carried out for 1 h, and finally the temperature was raised to 90 °C for 1 h. 400 ml of deionized water was added to the reaction mixture in three times, and then 10 ml of hydrogen peroxide with a concentration of 30% was added. After the reactants were cooled, 3% dilute hydrochloric acid and deionized After washing with water, centrifugation, and drying, graphene oxide is obtained.

[0043] (2) Water-based Fe 3 O 4 Preparation of: 13g FeCl 3 and 4g of trisodium citrate were dissolved in 400ml of ethylene glycol, then 24g of sodium acetate was added ...

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Abstract

The invention discloses an anticorrosive coating based on magnetic particle functionalized graphene and a preparation method of the anticorrosive coating. The invention discloses an anticorrosive coating based on magnetic particle functionalized graphene. The anticorrosive coating comprises the following raw materials in parts by weight: 100-120 parts of epoxy resin emulsion, 3-10 parts of beta-cyclodextrin / Fe3O4 / graphene oxide, 50-70 parts of a water-based curing agent, 1-8 parts of a curing accelerator, 0.1-5 parts of a dispersing agent and 80-300 parts of water. When a protected metal is coated with the anticorrosive paint, under the action of magnetic particles, graphene oxide in a water-borne epoxy resin matrix forms a film on the surface of a metal object in a parallel or more regular form, graphene oxide sheet layers are tightly connected due to the action of magnetic force, the film forming area of the graphene oxide is increased, and the corrosion resistance of the metal object is improved. The permeation time of water, oxygen, chloride ions and the like is prolonged, so that the corrosion resistance of the coating is improved.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to an anti-corrosion coating based on magnetic particle functionalized graphene and a preparation method thereof. Background technique [0002] Graphene is the thinnest and hardest nanomaterial known in the world. It is considered to be a new generation of revolutionary new material after silicon. Graphene is widely used in polymerization due to its excellent electrical conductivity, thermal conductivity, mechanical and physical barrier properties. field of composite materials. As a member of polymer materials, anti-corrosion coatings include epoxy resin anti-corrosion coatings, polyurethane anti-corrosion coatings, and polyaniline anti-corrosion coatings. The lamellar structure of graphene is superimposed and staggered, and a "labyrinth" shielding structure can be formed in the coating, which can effectively inhibit the infiltration, penetration and diffusion of corrosive media, ...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D5/08C09D7/61C09D7/65C09D5/23
CPCC09D163/00C09D5/08C09D7/61C09D7/65C09D5/23C08K2003/2275C08K2201/01C08L5/16C08K3/042C08K3/22Y02P20/10
Inventor 熊军秦显营李宝华
Owner 深圳石墨烯创新中心有限公司
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