Enhance the "maze" effect and delay coating failure

the advanced coating and adhesive team of Ningbo Materials of the Chinese Academy of Sciences has made new progress in the research and development of graphene cathode anti-corrosion coatingFor graphene/ polymer composite anti-corrosion coating damage will accelerate metal substrate corrosion this hidden danger, respectively, the use of biomass furan epoxy monomer through the DA reaction of graphene surface packaging, to achieve graphene / epoxy coating long-lasting corrosion protectionAnd, due to the presence of active chain segments, the coating can effectively improve interface compatibility with epoxy substrates, improve coating density, and greatly enhance the "maze" effect of substances such as oxygen or water vapor through the coating, delaying the failure of the coatingElectrochemical testing shows that the coating material has excellent protective properties, compound coating resistance relative to the blank coating plus 3-4 orders of magnitudeaccording to, graphene is an ideal two-dimensional nano-anti-corrosion fillerIn recent years, due to the continuous development of graphene material large-scale preparation technology, graphene coating in the field of anti-corrosion has attracted a wide range of research interestsA large number of studies have found that graphene polymer composite coatings have better protection than conventional polymer coatings due to the synergy of ultra-hydrophobic and "maze effects"Although some progress has been made in the research of anti-corrosion of graphene materials, there are still many places that need improvement or breakthroughIn particular, although graphene is an ideal anti-corrosion material, however, "cathode corrosion promotion activity" greatly limits the development of graphene anti-corrosion technology, it is necessary to find effective methods to suppress activity to break this limit