New Generation De-Ice Systems

Over the past several years, Villinger R&D has developed proprietary, elastic semi-conductive polymers that can be applied as a thin coating (< 0.2mm) to a variety of parts and components, yielding a heat-able layer with a surface density of approximately 150 g/m2 or less. The coating is heated electrically using either AC or DC voltage and has a positive temperature coefficient (PTC), which yields a coating that is temperature self-limiting and will not experience damaging “hot spots” encountered by traditional resistive heaters. The coating sheet resistances can also be chemically tailored to obtain values ranging over several orders of magnitude depending on the requirements of the application.
The coatings are extremely damage tolerant and can readily continue to operate after being punctured repeatedly. Finally, voltage can be applied across the entire surface using flexible, low profile electrical buses on either side of the coated area, enabling extremely simple wiring configurations that can be laid out in a multitude of geometries to fine tune desired power densities.
Heat-able coatings developed by Villinger R&D

  • Have low energy consumption
  • Are easily applicable as a paint on 3D and twisted surfaces
  • Will not affect the aerodynamics of the vehicle, as they can be integrated fully into composite structures
  • Are thin and lightweight
  • Are easily applicable to a variety of substrate materials with excellent adhesion properties
  • Will continue to operate despite damage and can be readily reapplied if damage occurs
  • Will not affect the integrity of structural components
  • Employ a self-controlling heating technology that provides even temperature over the complete surface covered, preventing “hot spots” typical of resistive heaters
  • Are ideal for use in composite structures due to distributed heating with no “hot spots” that may cause damage
  • Are elastic and can sustain elongations and vibrations representative of rotorcraft operation


Specifications of Villinger’s heat-able coatings:

  • System thickness:  < 2/10 mm
  • Overall System weight:  < 150 g/m2
  • Temperature: (active / passive) up to 180° Celsius
  • max. Power Density:  12 W / cm²   /  77 W / inch²
  • Variable Voltages:  (from 6V up to 690V AC or DC)
  • Heating Systems can operate with and without ECU (Electronic Control Unit)

The main features of Villinger’s heat-able coatings are therefore:

  • Safe by design
  • High damage tolerance
  • Improved flying performance
  • Fuel and energy savings
  • Performance superior to state of the art technology (like de-icer pads)
  • Low power consumption
  • High environmental and structural durability
  • Proven performance
  • Flexible and easy application