Journal of Inorganic Materials ›› 2017, Vol. 32 ›› Issue (12): 1257-1263.doi: 10.15541/jim20160699

• Orginal Article • Previous Articles     Next Articles

Thermal Reduced Graphene Oxide/Polyimide Nanocomposite Coating: Fabrication and Anticorrosive Property

Ying-Kun JIA1,2(), Pei CHEN1, Qing-Hong ZHANG1(), Jing SUN2()   

  1. 1. College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
    2. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
  • Received:2016-12-27 Revised:2017-07-18 Online:2017-12-20 Published:2017-11-21

Abstract:

Thermal reduced graphene oxide (TRGO) was incorporated into polyimide (PI) matrix as two-dimensional nanofillers and TRGO/PI nanocomposite anticorrosive coatings were fabricated. Then AC impedance spectroscopy and dynamic potential polarization curves were adopted to evaluate the electrochemical corrosion behavior of the obtained coatings in simulated seawater (3.5wt% NaCl solution). The results show that the addition of TRGO significantly improves the coating resistance and corrosion protection efficiency compared with pure PI coating. Besides, the TRGO/PI composite coating with the addition of 0.3wt% TRGO shows the most excellent anticorrosive property, with the maximum coating resistance of 1.3176×106 Ω and the highest corrosion protection efficiency of 99.65%. The enhanced anticorrosive property can be attributed to the physical barrier properties of the TRGO with lamellar structure.

Key words: graphene,, polyimide,, anticorrosive,, composite, coating

CLC Number: 

  • TQ174