Abstract
AbstractTo enhance the anti‐corrosion of the waterborne epoxy resin coating, we filled GO‐TiO2 into the coating with ultrasound and stirring method. Results show that coatings rendered optimum properties at GO‐TiO2 content of 0.4 wt% with a hardness of 3H and rate of thermal weight loss reduce 8.3 wt%. After immersion for 30 days, coating exhibited water absorption ratio of merely 11.25% and open circuit potential of −0.871 V. After 1000 h of scratch‐neutral salt spray test, no obvious signs of corrosion were observed on surface. Moreover, Electrochemical results demonstrated that maximum impedance modulus of 0.4GO‐TiO2 coating was 2.18 × 106 Ω cm2, corresponding to superior corrosion resistance. What is more, anticorrosion mechanism was discussed. In conclusion, Filling GO‐TiO2 improved mechanical properties, thermal stability and corrosion resistance of waterborne epoxy resin coatings.
Published Version
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