▎ 摘　　要

The goal of this research was to simplify the preparation process of graphene-contained powder coatings for metal anticorrosion. To do this, thermosetting powder/graphene oxide (TP@GO) composites were prepared via a facile planetary ball-milling technique and were painted onto tinplates by electrostatic spraying. After immersion in a 3.5 wt % NaCl solution for 9 days, potentiodynamic polarization curves revealed superior anticorrosion performance for the 1.5 wt % graphene oxide coating (TP@GO(15)), providing 74.1% decreased corrosion current and 34.2% increased corrosion potential compared to pure thermosetting powder coating. After 48 days of immersion, the electrochemical impedance spectroscopy analysis of the prepared materials revealed that the anticorrosion properties were in the sequence TP < TP@GO(10) < TP@GO(20) < TP@GO(15). The results indicated that addition of moderate amount of graphene oxide to prepare TP@GO coatings can significantly promote the anticorrosion performance of metals. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48264.