接枝ZnO与单壁碳纳米管协同构筑功能一体化复合涂层  

Multifunctional Integrated Composite Coatings Based on both Grafted-ZnO and Single-walled Carbon Nanotubes

作　　者：满田囡 王芷琦 邢月 马克明 农智升 卢少微 Man Tiannan;Wang Zhiqi;Xing Yue;Ma Keming;Nong Zhisheng;Lu Shaowei(School of Materials Science and Engineering,Shenyang Aerospace University,Shenyang 110136,China)

机构地区：[1]沈阳航空航天大学材料科学与工程学院,沈阳110136

出　　处：《化学学报》2024年第11期1142-1149,共8页Acta Chimica Sinica

基　　金：辽宁省教育厅项目(LJKMZ20220570);辽宁省高校基本科研业务费资助。

摘　　要：超疏水涂层因自清洁、防覆冰、耐腐蚀和油水分离等特性,被众多领域广泛应用.本研究利用分级分散法和非共价聚乙烯吡咯烷酮(PVP)的位阻作用获得了单分散碳纳米管浆料,将其作为功能填料制备了氟碳基涂层;利用ZnO颗粒接枝长烷基链构建了微米级平滑、纳米级粗糙的微/纳结构表面,其接触角为152.5°,动态接触角为5°,实现了功能一体化的仿生超疏水涂层制备.单分散的单壁碳纳米管(SWCNTs)构成的网络结构与ZnO构成的导电网链协同作用,使复合涂层具有抗静电性能,其电阻率为3.15Ω·m.涂层的超疏水表面及涂层内部三维交错结构能够延缓腐蚀发生,复合涂层的腐蚀电流密度为9.66×10^(-8)A/cm^(2),比Q235钢低3个数量级.同时该涂层具有良好的机械稳定性和耐酸碱性,兼备了抗静电、耐腐蚀、自清洁功能一体化特性.Superhydrophobic coatings are widely used in many fields because of their self-cleaning,anti-icing,anticorrosion and oil-water separation properties.Conventionally,superhydrophobicity is defined as possessing a water contact angle above 150°and a sliding angle below 10°.A superhydrophobic surface is produced either by creating a rough surface on a hydrophobic material or by modifying a rough surface using materials having a low surface free energy.To consider the practical application of superhydrophobic coating,we prepared a micro-nanoscale flowerlike superhydrophobic coating using a surface treatment method.In our work,the monodisperse single-walled carbon nanotubes(SWCNTs)can be obtained using a non-covalent polyvinylpyrrolidone(PVP)dispersant under the graded homogenization method.We incorporate low amounts of 0.15%(w)SWCNTs into fluorocarbon(FC)coatings to fabricate composite coatings.The micro-nano structure surface with micron level smooth and nanometer level rough was constructed by ZnO particles after surface treatment.The contact angle of composite coating was 152.5°and a sliding angle was 5°,and the bionic superhydrophobic coating with integrated functions was fabricated.The result suggests that the combination of the rough structures achieved by the flower-like ZnO and low surface energy provided by stearic acid modification results in superhydrophobicity and a very low sliding angle.The network structure formed by SWCNTs and the conductive grid chain formed by ZnO has decided the antistatic properties,the resistivity is 3.15Ω·m.The superhydrophobic surface and the three-dimensional cross-structure of the ZnO/SWCNTs/FC composite coating can delay the corrosion.The corrosion current density of the composite coating is 9.66×10~(-8)A/cm~2,which is 3 orders of magnitude lower than that of Q235 steel.The ZnO/SWCNTs/FC composite coating could be easily repaired after losing superhydrophobicity by surface treatment.At the same time,the coating has good mechanical stability,acid and alkali resistance,a

关 键 词：微/纳结构 超疏水涂层 抗静电性能 耐腐蚀性 自清洁性能 

分 类 号：TB3[一般工业技术—材料科学与工程]