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Study of CO2 Corrosion Behavior of Graphene Oxide/Epoxy Composite Coating in High Chloride Environment

Due to the special structure and chemical properties graphene oxide has a broad application prospect in corrosion protection. Graphene oxide/epoxy composite coatings were prepared to investigate the CO2 corrosion behavior in high chloride environment. SEM XRD and other technologies were used to characterize the physical properties of the graphene oxide/epoxy composite coatings. The corrosion resistance of graphene oxide/epoxy coatings was studied by electrochemical impedance spectroscopy and polarization curve.In order to increase the dispersion of graphene oxide in epoxy 3-triethoxysilyl-1-Propanamine(KH550) was used to modify the graphene oxide. Then graphene oxide/epoxy composite coatings with different mass fraction of modified graphene oxide were prepared by physical dispersion method.Results showed that the addition of modified graphene oxide improved the anti-corrosion properties of the epoxy coating. The corrosion potential(Ecorr) of 0.5%wt graphene oxide/epoxy composite coating (Ecorr =-255mV) was more positive than that of the epoxy coating(Ecorr =-631 mV). Besides although the corrosion resistance of the graphene oxide/epoxy composite coating was weakened after long-term immersion it still can provide a considerable protection for the base metal from CO2 corrosion in high chlorideenvironment.

Product Number: 51319-13212-SG
Author: Hao Xu
Publication Date: 2019
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$20.00
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