▎ 摘　　要

Compared with solvent-based resins, waterborne resins still have defects such as insufficient anti-corrosion efficiency. In this paper, the sulfonated graphene/zinc phosphate composites were prepared as an anti-corrosion filler and doped into waterborne polyurethane resin. The morphology of composites is different from pure zinc phosphate. The optimal corrosion resistance can be obtained by adding 0.5 wt% sulfonated graphene/zinc phosphate fillers characterized by Potentiodynamic polarization curves and EIS analysis The corrosion current density (i(co)(rr)) was 0.4252 mu A/cm(2) and the charged transfer resistance (R-ct) was up to 10.937 x 10(3) Omega cm(2), which show a good potential as anti-corrosive fillers in waterborne coatings system.