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Preparation and properties of CNTs-Cu hybrids/epoxy superhydrophobic and anticorrosive coatings
Zhongbo Zhu,Shumei Kang,Hua Chen,Qingping Zhao,Zhaokang Huo,Pengyu Li,Qidong Cao,Chenshuo Lu 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.119 No.-
In this work, hydrophobized copper powders combined siloxane-modified carbon nanotubes(SHMWCNTs) to obtain intertwined hybrids of carbon nanotubes and copper (CNTs-Cu hybrids), andsuperhydrophobic CNTs-Cu hybrids/epoxy coatings were prepared on the surface of AH36 carbon steelby drop coating. The surface morphology and wettability of coatings were changed by adjusting the ratiosof SHMWCNTs to hydrophobized copper powders. The obtained coating can show a water contact angleof 167.2, a water sliding angle of 2.9, a plant oil contact angle of 134.3, and self-cleaning properties. Thecoating maintains superhydrophobicity after 300 tape-peeling times, exhibiting excellent mechanicaldurability. The fouled area percentages of chlorella on the coating and a pure epoxy resin were 0.23(±0.07)% and 12.18(±1.22)%, respectively, displaying anti-biofouling resistances. The coating has excellentcorrosion resistance, and its corrosion current density reached 9.55 10-8 A/cm2.