Ice formation and accumulation on surfaces can be problematic for devices such as aircraft, wind turbines, and powerlines. SurfTec has developed a coating that decreases ice adhesion by a factor of 3.3. The problem with many ice-phobic coatings that decrease ice adhesion, is that they are not durable and must be frequently reapplied to be effective. SurfTec’s coating yields a robust protective coating that can withstand UV and weathering degradation and is designed to last for the life of the component on which it is deposited.
A centrifuge ice adhesion (CAT) test, performed at AMIL International Laboratory, revealed that the coating exhibits an adhesion reduction factor (ARF) of 3.3.
Figure 1. Aerospace, electric power transmission, and wind energy applications for icephobic coating.
Figure 2. Samples prepared for centrifuge ice adhesion test (CAT)
Figure 3. SEM micrograph demonstrating the resulting topography produced by SurfTec’s coating.
SurfTec’s coating possesses nano-scale and micro-scale hierarchical structures that produce ultra-hydrophobic properties. Because water is repelled and does not fully wet the surface, any ice crystals formed on the surface have a smaller contact area at the interface with the coating and thus a lower adhesion to the surface.
Figure 4. Samples showing ice accumulation ( ice formed by freezing drizzle) before and after centrifuge ice adhesion test.
Table 1. Results for Adhesion Reduction Factor.
SurfTec’s coating exhibits an ARF of 3.3. This reduction in ice adhesion, coupled with the ability of the coating to maintain functionality under UV and harsh weather conditions, makes the coating ideal for many applications.