Abstract
Epoxy resin coatings were prepared with phytic acid-doped graphene oxide (PA-GO) to modify epoxy resins (EP). The aim was to improve the dispersion of GO in waterborne epoxy resin, and thus to improve the corrosion resistance of steel structures. The Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) results showed that PA-GO was successfully prepared and has a better dispersion in epoxy resin. This is mainly due to the PA insert, which increased the layer spacing of the GO. The results obtained under the controlled corrosive environment showed that the specimen coated with EP containing 1.0 wt.% PA-GO had better corrosion resistance than other samples. This resistance was also two orders of magnitude higher than pure epoxy coating. The main reason for this is that the dispersion of GO in waterborne epoxy resin had been improved.
Highlights
Epoxy resins (EP) have many excellent chemical properties and adhere to various substrates that are widely used in metal structure/surface anticorrosion [1,2]
At present, epoxy resins commonly used for corrosion protection are typical solvent-based systems containing extremely high volatile compounds (VOC), which are extremely harmful to the environment and human health
To better compare the influence of phytic acid-doped graphene oxide (PA-Graphene oxide (GO)) and GO on the anti-corrosion performance of waterborne epoxy resin, this paper focuses on the comparison of the difference between samples with the added filler of 1.0 wt.%
Summary
Epoxy resins (EP) have many excellent chemical properties and adhere to various substrates that are widely used in metal structure/surface anticorrosion [1,2]. Waterborne epoxy resin coating has the disadvantages of poor barrier performance and a short anti-corrosion period due to the easy formation of micropores during curing in practical application [6,7,8]. The barrier property of waterborne epoxy resin is often improved by adding functional fillers (nanocarbons [6], SiO2 [9], and ZnO [10]) with excellent performance to improve the anti-corrosion performance of the coating and prolong the anti-corrosion period. Water-based composite epoxy coatings with good barrier performance and corrosion resistance were developed with layered sodium montmorillonite (Na-MMT) [11], mesoporous MCM-41 silica nanoparticles [12], polyethylene imine (PEI)-modified meso-TiO2 [13], and tripolyphosphate intercalated hydrotalcite as fillers [14].
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
