氧化石墨烯基纳米杂化物在防腐涂料中的应用研究进展

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

氧化石墨烯(GO)具有比表面积高、阻隔性好等特点,将其作为填料加入涂料体系中可增强涂层的防腐性能.但是,氧化石墨烯片层间存在的相互作用使其容易形成聚集体,这妨碍了其阻隔性能的充分发挥,严重的聚集甚至会导致涂层机械性能变差.除了氧化石墨烯,其他纳米材料在防腐涂料中同样应用广泛,并且显示出与氧化石墨烯功能互补的特点.研究表明,对氧化石墨烯和其他纳米材料进行表面改性,获得的纳米杂化物能够使防腐涂料获得更好的防腐效果.基于此,总结了氧化石墨烯基纳米杂化物体系在提高涂料防腐性能方面的研究进展.并对其未来发展趋势进行了展望.

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.