Research Progress in Application of Graphene Oxide Based Nanohybrid in Anti-corrosive Coatings

Graphene oxide (GO) has the features of high specific surface area and good barrier, which can be used as filler to enhance the corrosion resistance of coatings. However, the interaction between the graphene oxide sheets makes it easy to form aggregates, which hinders the full play of its barrier properties. Serious aggregation may even lead to poor mechanical properties of the coating. In addition to GO, other nanomaterials are also widely used in anticorrosive coatings and show complementary functions with GO. The results show that the nanohybrid compounds obtained by surface modification of GO and other nanomaterials could help anticorrosive coatings achieve better anticorrosive performances. Based on the study, the research progress of GO based nano-hybrid system in improving anticorrosion performance of coatings is summarized, and its future development trend prospected.