Preparation and properties of flexible silyl ester acrylate self-polishing antifouling coating
Silyl ester acrylate matrix resin,prepared from monomers of methyl methacrylate,butyl acrylate,isooctyl acrylate,methoxyethyl acrylate and triisopropyl silicyl acrylate,were combined with ductile resin as film-forming blend resin to obtain a flexible self-polishing antifouling coating with Cu2O as main antifouling agent,copper pyrithione(CuPT)and zinc(Zineb)as auxiliary organic antifouling agent.The silyl ester acrylate matrix resin was characterized by FTIR and tested for its glass transition temperature(Tg).The film-forming blend resin was analyzed by SEM,followed by evaluation on the flexible self-polishing anti-fouling coating for its flexibility,adhesion,water absorption and anti-fouling properties.The results showed that the silyl ester acrylate matrix resin with a Tg of-20.54 ℃ had good physical and mechanical properties,while the addition of ductile resin as external plasticizer increased the flexibility of the matrix resin.The blended resin with m(silyl ester acrylate resin)∶m(ductile resin)=7∶3 displayed the best compatibility.The flexible self-polishing antifouling coating showed grade 1 in flexibility,and the adhesion force of 4.0 MPa on the surface of elastomer substrate.Moreover,the coating exhibited a water absorption of 1.1％～1.2％after 60 d of testing,and significant antifouling effect in the 36-month shallow water immersion test.
万方数据
维普
