▎ 摘　　要

Graphene oxide zinc phosphate (GO-ZP) composites were synthesized by a one-step ultrasonic wav-eassisted method and then incorporated into waterborne polyurethane as the anticorrosive reinforcement to produce graphene oxide zinc phosphate/polyurethane (GO-ZP/PU) composites. The GO-ZP composites were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The anticorrosive properties of the GO-ZP-reinforced PU composite coatings were characterized by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The correlations among the mass ratio of GO to Zn-3(PO4)(2), the concentration of GOZP added to the waterborne polyurethane (WPU) and the anticorrosive properties of the composites were investigated. The results showed that excellent anticorrosive properties were achieved for the GO-ZP/PU composite with the 0.5 wt% GO-ZP (3:1) coating, which had a corrosion current density (i(corr)) of only 4.41x 10 (-7 )A/cm(2) and a charge transfer resistance (Rct) of 1.104 x10(4) Omega cm(2).