| CHEN Ke-feng,FANG Yun-hui,ZHOU Kai-he,LI Peng,GUAN Jin-sheng,CAI Hui,TU Qi-yong,ZHANG Zhao-de,PU Ji-bin,LIU Shuan,WANG Li-ping.Preparation and Performance Evaluation of Graphene Based Conductive Anti-corrosive Coatings[J],47(12):246-254 |
| Preparation and Performance Evaluation of Graphene Based Conductive Anti-corrosive Coatings |
| Received:June 12, 2018 Revised:December 20, 2018 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2018.12.033 |
| KeyWord:conductive anti-corrosive coatings graphene high current impulse electrochemical corrosion resistance electrical performance |
| Author | Institution |
| CHEN Ke-feng |
1.School of Naval Architecture and Mechanical-electrical Engineering, Zhejiang Ocean University, Zhoushan , China; 2.Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technologies and Engineering, Chinese Academy of Sciences, Ningbo , China |
| FANG Yun-hui |
3.Ningbo Power Supply Company of State Grid Zhejiang Electric Power Corporation, Ningbo , China |
| ZHOU Kai-he |
3.Ningbo Power Supply Company of State Grid Zhejiang Electric Power Corporation, Ningbo , China |
| LI Peng |
3.Ningbo Power Supply Company of State Grid Zhejiang Electric Power Corporation, Ningbo , China |
| GUAN Jin-sheng |
3.Ningbo Power Supply Company of State Grid Zhejiang Electric Power Corporation, Ningbo , China |
| CAI Hui |
3.Ningbo Power Supply Company of State Grid Zhejiang Electric Power Corporation, Ningbo , China |
| TU Qi-yong |
4.Chinese People's Liberation Army 63790 Troops, Wenchang , China |
| ZHANG Zhao-de |
1.School of Naval Architecture and Mechanical-electrical Engineering, Zhejiang Ocean University, Zhoushan , China |
| PU Ji-bin |
2.Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technologies and Engineering, Chinese Academy of Sciences, Ningbo , China |
| LIU Shuan |
2.Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technologies and Engineering, Chinese Academy of Sciences, Ningbo , China |
| WANG Li-ping |
2.Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technologies and Engineering, Chinese Academy of Sciences, Ningbo , China |
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| Abstract: |
| The work aims to prepare a new type of graphene based conductive anti-corrosive coating and evaluate and analyze the long-term anti-corrosive mechanism and conductive mechanism of this coating. A new type of graphene conductive an-ti-corrosive coating was prepared with epoxy resin as the main substance to form the film by matching and formulating conductive fillers and anti-corrosive fillers. The anti-corrosive mechanism and failure process of conductive anti-corrosive coating were investigated by testing of basic properties of coating, electrochemical workstation test system, neutral salt spray test, test of buried samples in actual soil and high current impulse test and the electrical performance of the coating was also studied. The prepared coating had excellent anti-corrosive performance (adhesion, impact resistance, adhesive strength), excellent water resistance, neutral salt spray resistance and chemical resistance. The coating surface was still intact and had the good wet adhesion after the 1500 hours salt spray experiment. From the electrochemical system test, the coating/Q235 carbon steel still exhibited good protective performance after immersed in 3.5wt% NaCl solution for 60 days. The volume resistivity and surface contact resistivity of the coatings were 0.21 Ω×cm and 6.32 Ω×cm2 respectively. There was no cracking，peeling or burning of the coating after it was subjected to a 5 kA high-current impulse test for 5 times. There was no significant effect on the conductive anti-corrosive coating after several impacts by high current. The conductive anti-corrosive coating designed by this formula shows good anticorrosion performance and electrical properties. |
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