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

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 ...

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 include the following aspects: (1) increase the total weight of the hull, increase the resistance during navigation, and increase energy consumption; (2) damage the coating on the metal surface, accelerate metal corrosion and Aging, shortening the service life of the ship; (3) The organisms attached to the hull to the new sea area cause biological invasion, endanger the marine environment, etc.

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