Glossary of surface technology

Reducing the wettability

To make a surface non-wettable, its surface energy must be smaller than the surface tension of the respective liquid. Surface energy can be reduced by various surface coatings:

PTFE coats are primarily used on textile surfaces to make them hydrophobic and this waterproof and dirt-repellent.

untreated                                                   hydrophobic coated


Simplified functional principle of a plasma coating

before the plasma treatment: untreated surface
Monomer CF4 polymerises under the influence of the plasma
After plasma treatment: Deposited polymer layer
  • Icon Carbon / dirt particles

    Carbon / dirt particles

  • Icon Fluorine


  • Icon Plasma


  • Icon Tetrafluormethane CF4

    Tetrafluormethane CF4

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