Anti-corrosion epoxy/modified graphene oxide/glass fiber composite coating with dual physical barrier network

作者：Zhao, Zhuowei; Zhou, Meng; Zhao, Wenjie; Hu, Jianfeng^*; Fu, Heqing^*

来源：PROGRESS IN ORGANIC COATINGS, 2022, 167: 106823.

DOI：10.1016/j.porgcoat.2022.106823

• Graphene oxide
• Glass fibers
• Epoxy resin
• Anti-corrosion

Polymer matrix composite with a physical barrier network can efficiently inhibit corrosion on carbon steel. In this paper, 3-(2-Aminoethylamino) propyldimethoxymethylsilane modified graphene oxide (A-GO) and glass fiber (GF) were incorporated into Epoxy (EP) matrix, and EP/GF/A-GO composite coating with dual physical barrier network was prepared. The electrochemical impedance spectroscopy (EIS) showed that the impedance modulus of EP/GF/A-GO composite coating was highest among the different coatings, indicting EP/GF/A-GO composite coating with dual physical barrier network could significantly enhance the corrosion protection properties. Even after 45 days of immersion, the value of impedance modulus of the EP/GF/A-GO composite coating was above 3.9 x 107 omega cm(2). Moreover, the anti-corrosion protection mechanism of EP/GF/A-GO composite coating was investigated. EP/GF/A-GO composite coating has excellent anti-corrosion protection performance.