Study on superhydrophobic surface and properties based on carbon nanotube coating
In order to prepare superhydrophobic surfaces in a green and environmentally friendly way,the combination of carbon nanotube(CNT)coating and SLM-3D printing was used to prepare superhy-drophobic surfaces on metal substrates.Characterized by scanning electron microscopy and surface composition energy spectrum analysis,it was found that carbon nanotubes were successfully coated on the 3D printed rice-like groove structure and presented a cluster structure.The carbon nanotube clusters and the groove structure on the surface of the sample formed a two-level structural feature,and the superhydrophobic property was obtained without the modification of fluorine-containing substances such as fluorosilicate.The contact angle was 153.1° and the rolling angle was 8.2°.The corrosion resistance,adhesion and mechanical properties of the samples prepared by carbon nanotube coating and fluorosilane modification were tested.The results showed that the superhydrophobic surface coated with carbon nanotubes not only had excellent corrosion resistance but also had a minimal surface adhesion of only 23.2 μN.The contact angle of the sample coated with carbon nanotubes was still above 150° after linear wear of 280 cm.The superhydrophobic surface coated with 3D printing combined with carbon nanotubes had strong damage resistance and stable hydrophobic function.
carbon nanotubesuperhydrophobicSLM-3D printingcharacterization of hydrophobic properties
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