X. Wang, X. Qi, M. Pearson, Z. Lin, D. Battocchi
North Dakota State University,
Keywords: Nanomodified coating, corrosion control and mitigation, oil and gas pipeline, high-performance coating
Summary:High-performance anti-corrosion coatings have been gaining increasing attention in oil and gas pipeline application in recent years. Such coatings require enhanced multi-functionality of interest, such as barrier effect, abrasion resistance, inhibition of the corrosion, and adhesion to the substrate. Recent studies have found out that inclusion of nanomaterials in the polymer matrix will lead to various enhancements. Thus, this study aimed to explore the nano-modified additives on the basis of the properties of the corrosion resistance at both short-term and long-term performance, from formulation to characterization. Graphene nanoplatelets were used to study the barrier behaviors of the graphene-reinforced epoxy coatings. Two dispersion methods have been carried out to find out how to enhance the dispersion and alignment of graphene nanoplatelets in an epoxy matrix. For a better understanding, the corrosion resistance behaviors of graphene/epoxy composites were evaluated at various periods of time using EIS tests under Salt Fog test, while their mechanical properties were evaluated using dog-bone tensile tests and abrasion tests. The results demonstrated that the nano-modified coatings exhibited the dramatically improved mechanical properties as well as corrosion resistance and abrasion resistance. The microstructural images were used to evaluate the levels of dispersion under varying graphene contents.