Surface Coatings International

, Volume 80, Issue 4, pp 168–171 | Cite as

Water- and ice-repellent coatings

  • H Saito
  • K Takai
  • G Yamauchi


The study on water-repellent coatings and their effect on adhesion of ice is summarized as follows:
  1. 1

    A new type of water-repellent coating consisting of perfluorinated PTFE particles dispersed in PVdF resin binder exhibited a contact angle of about 150 degrees. This extraordinarily high contact angle is attributed to the surface roughness and surface heterogenvity of the new materials taking into account the presence of air between water and new material in the high PTFE content resin.

  2. 2

    The free surface energy of the water-repellent coatings has a linear relationship with the adhesion of ice.

  3. 3

    The greater the surface roughness of high wettability materials, the better the adhesion. And the larger the surface roughness of water-repellent coatings, the poorer the adhesion. This difference is based apparently on the water-penetrating properties attributed to the difference in anchor effect on rough surface.



Contact Angle PTFE Free Surface Energy Apparent Contact Angle Anchor Effect 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© OCCA 1997

Authors and Affiliations

  • H Saito
    • 1
  • K Takai
    • 1
  • G Yamauchi
    • 2
  1. 1.Technical Assistance & Support CentreNippon Telegraph and Telephone Corp.TokyoJapan
  2. 2.The University of Utah (Present: Nippon Telegraph and Telephone Corp.)Salt Lake CityUnited States of America

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