Preparation and Anti-Corrosive Properties of Waterborne Epoxy Composite Coating Containing Graphene Oxide Grafted with Sodium Tripolyphosphate
Source abstract
Abstract
In this paper, graphene oxide (GO) was grafted with sodium tripolyphosphate (STP) to achieve a new anti-corrosive pigment (STG) with homogenous dispersion in waterborne epoxy (EP). The results obtained from Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM) and X-ray Diffraction (XRD) revealed that STP was successfully combined with GO by chemical bonding. The corrosion resistance of EP, GO/EP and STG/EP coatings on carbon steel substrates was investigated via electrochemical impedance spectroscopy (EIS) and salt spray test. The EIS results showed that the impedance value of coating with 0.7 wt.% STG reached 1.019 × 109 Ω∙cm2, which was considerably higher than that of neat waterborne EP coatings. Salt spray test results revealed once again that STG (0.7 wt.%)/EP coating had superior corrosion resistance. Besides, the STG (0.7 wt.%)/EP coated sample showed the highest adhesion strength between coating and substrate.
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Research context
OpenAlex topics: Corrosion Behavior and Inhibition · Conducting polymers and applications · Advanced Sensor and Energy Harvesting Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Sino-Spanish Advanced Materials Institute, Shenyang University of Chemical Technology, Shenyang 110142, China
Liaoning Provincial Key Laboratory of Rubber & Elastomer, Shenyang 110142, China
Key Laboratory on Resources Chemicals and Material of Ministry of Education, Shenyang University Chemical Technology, Shenyang 110142, China
Funding
the National Natural Science Foundation of China · National Key R&D Program "Science and Technology Winter Olympics" · Sino-Spanish Advanced Materials Institute, Shenyang Municipal Science and Technology Bureau · Department of Science & Technology of Liaoning province-Shenyang National Laboratory for Materials Science Joint R & D Fund Project
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