Urea-formaldehyde resin covered etched basalt as durable composite coating with antibacterial activity and corrosion resistance

A coating with both anti-corrosion function and antibacterial ability was developed by means of urea-formaldehyde resin self-assembly. The self-assembled urea-formaldehyde microspheres on basalt facilitate the formation of a good adhesion filler/coating matrix interface, which effectively promoted the corrosion resistance of the coating. Serving degradation of chemical bonds in urea-formaldehyde cause release of formaldehyde as a bactericide on the EBUF coating, thus imparting antimicrobial activity against PAO1 , B.l , and SRB , as observed. The EBUF composite coating thus exhibits combined anticorrosion and antimicrobial activity, suitable for corrosion control in severe environments.