A kind of preparation method of multilayer nanoporous marine antifouling coating

Abstract

The invention relates to the preparation of anti-fouling coatings. Aiming at the problem of releasing insoluble polymers and anti-fouling agents from poison-type coatings, a method for preparing multi-layer nanoporous marine anti-fouling coatings is provided. Alternate immersion in cationic polymer and anionic polymer solutions to prepare cationic polymer / anionic polymer bilayers as an adhesion layer; then alternately immerse the adhesion layer in Cu 2 O suspensions, anionic polymers, deposition of Cu 2 O / anionic polymer bilayer as the first stack; the first stack is then alternately immersed in cationic polymer, SiO 2 In suspension, deposition of cationic polymer / SiO 2 A bilayer is used as the second stack; finally the multilayer is calcined to remove the cationic and anionic polymers. The antifouling coating that the present invention makes is in SiO 2 and Cu 2 Under the synergistic effect of O, it can more effectively prevent marine biofouling, and has the advantages of high efficiency, non-toxic material release, environmental friendliness, and self-cleaning.

Description

technical field

[0001] The invention relates to a preparation method of an antifouling coating, in particular to a preparation method of a multilayer nanoporous marine antifouling coating. Background technique

[0002] Structures in contact with seawater, such as ship bottoms, navigation buoys, sonar devices, and seawater cooling pipes, will adhere to various marine organisms, causing many problems for offshore facilities. The most economical, convenient and effective way to deal with the adhesion of marine organisms is to use antifouling coatings. Coatings are substances that form a thin film on the surface of an object in a flowing state and adhere to a solid surface after drying and curing to form a continuous covering film. Antifouling coatings are mainly toxic materials. During the dissolution and swelling process of the coating, the toxic active agent will be continuously released into the seawater, killing marine organisms on the coating surface. For example, the Chi...