Metal surface treatment method based on chitosan and mussel adhesion protein composite membrane

Abstract

The invention discloses a metal surface treatment method based on a chitosan and mussel adhesion protein composite membrane, and relates to high-molecular compounds. The method comprises specific steps that step-by-step polishing, ultrasonic cleaning and drying are carried out on a metal material surface to be treated, and then an electro-deposition is adopted to enable chitosan and mussel adhesion protein to form a composite membrane layer on the metal material surface; and electro-deposition specifically comprises the steps that chitosan is added into a chitosan buffer solution to form a chitosan solution; the mussel adhesion protein is added into a mussel adhesion protein buffer solution to form a mussel adhesion protein solution; and the metal material to be treated is sequentially immersed into the chitosan solution and the mussel adhesion protein solution to be electrically deposited, and after drying, the composite membrane layer is formed on the metal material surface. The composite membrane layer is formed on the metal material surface, and the electro-deposition step can be repeatedly carried out to form multiple composite coatings. The method is simple, easy to implement and particularly suitable for corrosion prevention of metallic biomaterials.

Description

technical field [0001] The invention relates to a polymer compound, in particular to a metal surface treatment method based on a composite film of chitosan and mussel adhesion protein. Background technique [0002] Metal materials can be seen everywhere in daily life, and people use metal materials all the time. However, metal materials will inevitably corrode under the influence of the surrounding environment, which not only wastes resources and energy, causes environmental pollution, but may even cause major accidents, bringing huge economic losses and social harm to human production and life. [0003] Although the corrosion of metal materials is inevitable, some anti-corrosion measures can still be taken to control and slow down the corrosion of metal materials. Surface anti-corrosion technology is one of the most widely used anti-corrosion technologies. However, due to the need to use strong acid and strong alkali or toxic treatment agents in general conventional surfa...

AI Technical Summary

Problems solved by technology

However, due to the need to use strong acid and alkali or toxic treatment agents in general conventional surface treatment techniques, there are often potential hazards to the environment and human health.

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