Abstract
The influence of composition of nanocomposites composed of a polymer matrix and a functional nanofiller—carbon nanotubes (CNTs)—on the conductive, hydrophobic, water-repellent, and adhesive properties of relevant coatings is studied in this work. Coatings based on organofluorine and organosilicon matrices were produced using native CNTs and CNTs functionalized by the alkyl groups. To elucidate the effect of composition of a coating on its functional properties, both the filler concentration at a constant matrix content and the matrix concentration at a constant amount of CNTs were varied. It is found that the surface resistance of coating with a CNT content of 10 to 20% when using the organofluorine matrix is much higher (from 272.5 to 16.07 Ω kV–1) than for coatings based on the organosilicon polymer (from 17.52 to 11.15 Ω kV–1). Probing the relief and structure of coatings reveals that self-organization of carbon nanotubes in a polymer allows one to achieve the surface roughness at both the macro- and nanoscales, increasing the edge angle of surface wetting by water from 92.5° to 135.8° for samples based on the organofluorine polymer and from 113.5° to 144° for samples with the organosilicon matrix. The water drop roll-off angles of these coatings cover a range from 60.2° to 1°.
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This work was supported within the framework of complex scientific program 15 “Nanostructured and Amorphous Materials and Coatings” (“Strategic Development of Materials and Technologies for Their Processing until 2030”) [1].
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Solov’yanchik, L.V., Nagornaya, V.S., Kondrashov, S.V. et al. The Influence of Nanocomposite Composition on Conductive and Hydrophobic Characteristics of Coatings. Inorg. Mater. Appl. Res. 11, 140–146 (2020). https://doi.org/10.1134/S2075113320010360
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DOI: https://doi.org/10.1134/S2075113320010360