Preparation and Performance of Photo-Thermal Responsive Acrylate Self-Healing Anticorrosion and Antifouling Coatings

A photo-thermal filler (Ti₃C₂T_x@Cu₂O) and a formulation-modulated acrylate coating (PCHMA-BA) are successfully synthesized, and the two are composited to prepare the photo-thermal responsive acrylate self-healing anticorrosion and antifouling coating PCHMA-BA/Ti₃C₂T_x@Cu₂O. The photo-thermal conversion, self-healing,mechanical, anticorrosion and antifouling properties of the coating are investigated. The results show that the photo-thermal conversion efficiency of PCHMA-BA/Ti₃C₂T_x@Cu₂O increases by 400.44% than that of the PCHMA-BA coating, and the tensile property of PCHMA-BA/Ti₃C₂T_x@Cu₂O coating increases by 32.63% than that of the PCHMA-BA coating. The PCHMA-BA/Ti₃C₂T_x@Cu₂O coating can be repaired by itself in 60 s when the NIR laser power is 1.5 W/cm² and the wave length is 808 nm. The PCHMA-BA/Ti₃C₂T_x@Cu₂O coating has long-lasting corrosion resistant performance. Its low-frequency impedance modulus can maintain relative high level after 60 d immersion in seawater, and the scratch area has slight corrosion after 7 d of neutral salt spray test. The PCHMA-BA/Ti₃C₂T_x@Cu₂O coating has excellent bacterial inhibition performance, and can protect the microalgae from attaching, show good antifouling performance. This study provides a new idea for the development of multifunctional integrated intelligent marine protective coatings.