1. Amino-Modified Graphene Oxide from Kish Graphite for Enhancing Corrosion Resistance of Waterborne Epoxy Coatings.
- Author
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Hao, Shengle, Wan, Siming, Hou, Shiyu, Yuan, Bowen, Luan, Chenhui, Nan, Ding, Huang, Gen, Xu, Deping, and Huang, Zheng-Hong
- Subjects
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EPOXY coatings , *GRAPHITE oxide , *GRAPHENE oxide , *CORROSION resistance , *SALT spray testing , *FOURIER transform infrared spectroscopy , *GRAPHITE - Abstract
Waterborne epoxy (WEP) coatings with enhanced corrosion resistance were prepared using graphene oxide (GO) that was obtained from kish graphite, and amino-functionalized graphene oxide (AGO) was modified by 2-aminomalonamide. The structural characteristics of the GO and AGO were analyzed using X-ray diffraction (XRD), Raman spectroscopy, Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). And the anti-corrosive performance of waterborne epoxy-cased composite coatings with different addition amounts of AGO was investigated using electrochemical measurements, pull-off adhesion tests, and salt spray tests. The results indicate that AGO15/WEP with 0.15 wt.% of AGO has the best anti-corrosive performance, and the lowest frequency impedance modulus increased from 1.03 × 108 to 1.63 × 1010 ohm·cm−2 compared to that of WEP. Furthermore, AGO15/WEP also demonstrates the minimal corrosion products or bubbles in the salt spray test for 200 h, affirming its exceptional long-term corrosion protection capability. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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