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Improving the Mechanical Durability of Superhydrophobic Coating by Deposition on to a Mesh Structure

preprint
submitted on 30.08.2017, 03:17 and posted on 31.08.2017, 15:12 by Weihua Hu, De-Quan Yang, Edward Sacher

Superhydrophobic surfaces (SHSs) require a combination of a rough nano- or microscale structured surface topography and a low surface energy. However, its superydrophobicity is easily lost, even under relatively mild mechanical abrasion, when the surface is mechanically weak. Here, we develop a method that significantly increases the mechanical durability of a superhydrophobic surface, by introducing a mesh layer beneath the superhydrophobic layer. The hardness, abrasion distance, flexibility and water-jet impact resistance all increase for the commercially available Ultra-ever Dry superhydrophobic coating. This is attributed to the increased mechanical durability offered by the mesh, whose construction not only increases the porosity of the SHS coating but acts as a third, larger structure, so that the superhydrophobic layer is now composed of a three-level hierarchical structure: the mesh, micropillars and nanoparticles.

History

Topic

  • Coating Materials
  • Nanostructured Materials

Email Address of Submitting Author

dequan.yang@gmail.com

Email Address(es) for Other Author(s)

Mr. Weuhua Hu: Weihua.hu@solmontech.com Dr. Edward Sacher: edward.sacher@polymtl.ca

Institution

Solmont Technology Wuxi Co.,Ltd

Country

China

ORCID For Submitting Author

0000-0001-9730-7268

Declaration of Conflict of Interest

The authors report no conflicts of interest

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