Preparation method of anti-corrosion, antifouling and anti-protein waterborne polyurea grafted graphene coating material

A technology of grafted graphite and coating materials, applied in antifouling/underwater coatings, anti-corrosion coatings, polyurea/polyurethane coatings, etc., can solve the problems of increasing ship weight, energy waste, and damaging metal surface coatings, etc., to achieve Effects of prevention of marine fouling adhesion, excellent mechanical properties, and efficient preparation method

Active Publication Date: 2018-08-07
HUNAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because marine biofouling adheres to the surface of the ship, it not only increases the weight of the ship, but also increases the roughness of the ship's surface, thereby increasing the resistance of navigation, causing a lot of energy waste, and also corroding important underwater facilities. Greatly shortened the service life of the ship
In short, the hazards caused by marine biofouling mainly

Method used

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  • Preparation method of anti-corrosion, antifouling and anti-protein waterborne polyurea grafted graphene coating material
  • Preparation method of anti-corrosion, antifouling and anti-protein waterborne polyurea grafted graphene coating material
  • Preparation method of anti-corrosion, antifouling and anti-protein waterborne polyurea grafted graphene coating material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A method for preparing an anti-corrosion, anti-fouling and anti-protein unit water-based polyurea grafted graphene coating material is carried out according to the following steps:

[0029] (1) Antiprotein unit: Add 7.85g of dimethylaminoethyl methacrylate, 1.109g of mercaptopropylene glycol, 0.0785g of azobisisobutyronitrile purified from absolute ethanol and 20 mL of tetrahydrofuran into a 100 mL single-necked flask, and Stir the reaction at 70°C under the protection of nitrogen for 12 h, cool with liquid nitrogen to terminate the reaction, remove tetrahydrofuran with a rotary evaporator, add an appropriate amount of n-hexane dropwise, stir well, centrifuge twice at 4000 r / min for 5 min, and place the product at 45°C Vacuum-dry for 12 h for later use; use infrared spectroscopy (FTIR) to characterize the structure of the product, figure 1 is the infrared spectrogram of the antiprotein unit; figure 2 It is the hydrogen nuclear magnetic resonance spectrum (HNMR) pictur...

Embodiment 2

[0034] 8.15g of dimethylaminoethyl methacrylate used in the step, 1.428g of mercaptopropylene glycol, 0.008g of azobisisobutyronitrile, 25 mL of tetrahydrofuran, and a reaction temperature of 65°C;

[0035] 1.3g flake graphite used in step (2), 1.0g potassium nitrate, 25 mL concentrated sulfuric acid, 5.5g potassium permanganate;

[0036] 1.8 g of diphenylmethane diisocyanate used in step (3), 0.13 g of 2,2-dimethylolpropionic acid, and 10 mL of acetone;

[0037] 0.2g of antiprotein unit used in step (4), 0.1g of hydroxylated graphene;

[0038] Others are the same as in Example 1.

Embodiment 3

[0040] 8.0 g of dimethylaminoethyl methacrylate used in step (1), 1.4 g of mercaptopropylene glycol, 0.008 g of azobisisobutyronitrile, and 25 mL of tetrahydrofuran;

[0041] 1.0g flake graphite used in step (2), 1.5g potassium nitrate, 25 mL concentrated sulfuric acid, 6.5g potassium permanganate;

[0042] 2.0 g of diphenylmethane diisocyanate used in step (3), 0.2 g of 2,2-dimethylolpropionic acid, 15 mL of acetone, 1.5 g of polyetheramine D2000, and 0.8 g of polyetheramine D230;

[0043] 0.2g of antiprotein unit used in step (4), 0.1g of hydroxylated graphene;

[0044] Others are the same as in Example 1. Example 4:

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Abstract

The invention discloses a preparation method of an anti-corrosion, antifouling and anti-protein waterborne polyurea grafted graphene coating material. The preparation method comprises the following steps: (1) preparing an anti-protein unit; (2) preparing hydroxylated graphene; (3) preparing waterborne polyurea; (4) preparing the anti-corrosion, antifouling and anti-protein waterborne polyurea grafted graphene coating material. According to the preparation method disclosed by the invention, the strength of waterborne polyurea coating can be improved through grafting the hydroxylated graphene and the coating material also can have a certain antibacterial effect; the anti-protein unit is introduced and marine fouling can be prevented from being attached on the surface of a ship, so that the service life of the ship is effectively prolonged; the waterborne polyurea is a novel green and environment-friendly material and has the advantages of easiness for purification, low cost, no toxicity,no irritation, non-combustibility and the like. The anti-corrosion, antifouling and anti-protein waterborne polyurea grafted graphene coating material prepared by the method provided by the inventionhas excellent mechanical properties, is used for preventing the attachment of the marine fouling and has no harm to the environment, so that the anti-corrosion, antifouling and anti-protein waterborne polyurea grafted graphene coating material can be applied to the aspect of marine antifouling coating.

Description

technical field [0001] The invention belongs to the field of polymer composite materials, and relates to a preparation method of an anti-corrosion, anti-fouling, anti-protein water-based polyurea grafted graphene coating material. technical background: [0002] With the development of marine economy, marine biofouling has brought many problems to people's life and production. For example, marine biofouling attached to the bottom of the ship, buoys, pipelines and underwater facilities will reduce the speed of the ship and increase fuel consumption, etc. etc., causing great harm to coastal defense, shipping, coastal industry and fishery. Marine biofouling refers to a variety of attached organisms in the ocean, such as oysters and vine corals, which adsorb on the bottom of the ship and secrete an acidic substance to corrode the bottom of the ship. Because marine biofouling adheres to the surface of the ship, it not only increases the weight of the ship, but also increases the ...

Claims

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Application Information

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IPC IPC(8): C09D175/02C09D5/08C09D5/14C09D5/16C08G18/76C08G18/66C08G18/50C08G18/34C08G18/32C01B32/184C01B32/194
CPCC01B32/184C01B32/194C08G18/3203C08G18/5024C08G18/6685C08G18/6692C08G18/7671C09D5/08C09D5/14C09D5/1662C09D175/02
Inventor 欧宝立刘伟郭源君贺志梅郭艳颜建辉康永海陈友明刘清泉
Owner HUNAN UNIV OF SCI & TECH
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