Preparation method of self-renewal bionic marine antifouling paint

• Main Authors: KO CHANG-ROK, HUANG QINGMEI, SUN XIUHUA
• Format: Patent
• Language: Chinese; English
• Published: 16.01.2024
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS THEREFOR; WOODSTAINS

The invention discloses a preparation method of a self-renewal bionic marine antifouling coating. The preparation method comprises the following steps: firstly, synthesizing an amphiphilic block prepolymer with terminated dihydroxyl and containing poly (dimethylaminoethyl methacrylate) by adopting a continuous feeding living free radical polymerization method, and then reacting tertiary amine in the dihydroxyl prepolymer with halogenated acetate to generate a prepolymer with side groups containing cations; and carrying out condensation on the dihydroxyl cationic prepolymer, dihydroxyl polycaprolactone, dihydroxyl silicone oil and diisocyanate to generate the marine antifouling coating film forming matter with a quaternary ammonium salt structure on a side group. The formed film is directly used as a marine antifouling coating, under the action of seawater, a side chain is hydrolyzed to generate super-hydrophilic zwitter-ions to gradually hydrolyze and reduce an antifouling structure and a coating resin main c