Wind Turbine LEP Coatings

Hontek was told by the wind industry insiders that there was no rain erosion issues in 2014. In recent years, there has been increased awareness of the rain erosion issues as the blade size and tip speed increased.  Hontek has devoted substantial efforts to develop color stable LEP coatings to protect wind turbine blades against rain erosion.

Hontek coatings can offer rain erosion and particle erosion protection for wind turbine blades.  The coatings have longer pot life than typical LEP coatings, and are much more forgiving to apply in field repair environments, including on work platform or rope access method.

ROLLABLE LEP COATINGS

  • Very forgiving in field repair, including rope access application method
  • Longer pot life than typical LEP coating
  • Suitable for high humidity field repairs, up to 99% relative humidity (without condensed water on blade surface)
  • Suitable for lower humidity, as low as 30% relative humidity

BRUSHABLE LEP COATINGS

  • Longer pot life than typical LEP coating
  • Suitable for high humidity field repairs, up to 99% relative humidity (without condensed water on blade surface)
  • Suitable for lower humidity, as low as 30% relative humidity

Hontek LEP coatings have been field trialed on Prince Edward Island, Canada (high humidity) and Washing State, USA since 2016.  Great results have been reported. Coatings are also being field trialed in offshore wind farms off UK coastline.

In 2016, three European wind farm owners (E.ON, Vattenfall, Statkraft) jointly conducted a rain test screening of commercial LEP coatings at Polytech.  Hontek was invited to participate. The agreemant was that all participating coatings would be designated with a generic code in the tests, and Hontek would receive the test report with Hontek name identified and all other coatings still identified with generic codes.

Hontek coating was found to be the most durable liquid LEP coating that show no damage after 13 hours of rain test.  Most others failed within 0.5 to 3 hours.