Method for immobilizing antifouling enzyme on surface of inorganic coating

Abstract

The invention belongs to the technical field of immobilization of antifouling enzymes, and specifically relates to a method for immobilizing an antifouling enzyme on a surface of an inorganic coating.The inorganic coating containing an amino group on the surface is prepared from alkoxysilane, aminosilane and silica sol; the antifouling enzyme is immobilized on the surface of a transparent silicasol inorganic coating by connection of glutaraldehyde, so that the inorganic coating has relatively good antifouling performance while having excellent anticorrosive performance; the antifouling enzyme can be applied to surface antifouling of marine ships, structures (docks, drilling platforms, piers and piles) and the like as well as anticorrosion and antifouling of underwater equipment observation windows and other key parts, can provide a technical support for preparation of enzyme-based antifouling coating materials, has a simple and feasible preparation method, and uses cheap and easily available raw materials to greatly reduce production costs; the silica sol inorganic coating immobilized antifouling enzyme has relatively good transparency, good anticorrosion and antifouling properties, and a broad application prospect in surface antifouling and anticorrosion in a marine environment.

Description

Technical field: [0001] The invention belongs to the technical field of antifouling enzyme immobilization, and in particular relates to a method for immobilizing an antifouling enzyme on the surface of an inorganic coating. An inorganic coating containing amino groups on the surface is prepared by using alkoxysilane, aminosilane and silica sol. Glutaraldehyde-based linkages form antifouling enzymes to covalently immobilize the antifouling enzymes on the surface of inorganic coatings. Background technique: [0002] Marine fouling organisms, also known as marine fouling organisms, are a general term for animals, plants and microorganisms that grow on the bottom of ships and on the surface of all facilities in the sea. The growth process of fouling organisms is called biofouling. Marine biofouling will cause serious harm to ships, underwater equipment and offshore artificial facilities, and effective measures must be taken to prevent the fouling caused by marine organisms from ...

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Problems solved by technology

Chinese patent 201810373368.0 discloses a method for immobilizing antifouling enzymes on the surface of graphene oxide. The process includes four steps: dispersion, amination, aldehydes and immobilization. The key process is the immobilization of antifouling enzymes on graphene oxide. The immobilization of the powder surface is used to prepare anti-sea organism adhesion materials, and does not provide anti-corrosion properties; Chinese patent 201610250733.X discloses a method for preparing a temperature-sensitive self-polishing resin for covalently immobilizing antifouling enzymes, including temperature-sensitive The preparation of self-polishing resin and the covalent immobilization of antifouling enzymes are two steps. The covalent immobilization of antifouling enzymes involves the immobilization of antifouling enzymes on the surface of resin particles. Coating resin for biological adhesion, this resin can be gradually hydrolyzed in the marine environment, only has a single anti-fouling function, does not provide anti-corrosion performance, and the transparency of the coating is poor, and does not have the potential for anti-fouling application of underwater observation windows

None of the above patented methods are suitable for the immobilization of antifouling enzymes on the surface of organic coatings. If a coating has good anti-corrosion and anti-fouling properties at the same time, it will be able to greatly reduce the cost and expand the application field. At present, the There are few reports on the application of

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