Graphene/Epoxy Composite Coating Damage under γ-ray Irradiation and Corrosion Protection

【Author】

XIA Wei;WANG Tao;SONG Li;GONG Hao;GUO Hu;FAN Xiao-Li;GAO Bin;ZHAO Jun;HE Jian-Ping

【Institution】

College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics;College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics;College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics;College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics;College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics;College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics;College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics;Jiangsu Fasten Nippon Steel Cable Co., Ltd.;College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics

【Abstract】

Polymer networks like epoxy, as common protection materials, always experience radiolytic oxidation degradation under γ-ray irradiation environment. To avoid this, we report a scheme to synthesize EPTES modified graphene oxide, and incorporate it into the epoxy, followed by thermal polymerization. Then, a graphene/epoxy composite coating is obtained. Electrochemical tests were performed to prove the influence of γ ray on anti-corrosion properties of the graphene/epoxy composite coating. Electron spin resonance (ESR) and Fourier transform infrared spectroscopy (FT-IR) were used to evaluate the damage degree under the γ-ray irradiation, as well as to confirm its mechanism of graphene in the epoxy matrix during the irradiation. The results of Tafel slope show that the corrosion current of GEP is 6.140×10 ?9 A/cm 2, smaller than neat epoxy, indicating a better anti-corrosion property of the graphene/epoxy composite coating after 280 kGy irradiation. This finding points out that graphene possesses anti-corrosion property under 280 kGy irradiation. The ESR and FT-IR results show that graphene acts as radical scavenger, thus decreasing the damage from γ-ray irradiation, and slowing down the ageing process of the coating under γ-ray irradiation.

【Keywords】

EPTES;graphene;composite;γ-ray irradiation;anti-corrosion property;radical

References

To explore the background and basis of the node document

Springer Journals Database

Total: 23 articles

  • [1] Ayman M. Atta;;Ibrahim F. Nassar;;Hamed M. Bedawy, Unsaturated polyester resins based on rosin maleic anhydride adduct as corrosion protections of steel, Reactive and Functional Polymers,
  • [2] P. O’Neill;;C. Birkinshaw;;J.J. Leahy;;R. Barklie, The role of long lived free radicals in the ageing of irradiated ultra high molecular weight polyethylene, Polymer Degradation and Stability,
  • [3] I.N. Kholmanov;;E. Cavaliere;;C. Cepek;;L. Gavioli, Catalytic chemical vapor deposition of methane on graphite to produce graphene structures, Carbon,
  • [4] C. Galant;;B. Fayolle;;M. Kuntz;;J. Verdu, Thermal and radio-oxidation of epoxy coatings, Progress in Organic Coatings,

More>>