Development of Durable Superhydrophobic Coatings for Industrial Applications

C. Ellis-Terrell, R. Wei, V. Poenitzsch, M.A. Miller, K. Coulter
Southwest Research Institute,
United States

Keywords: superhydrophobic, water repellent, anti-icing, and oleophobic

Summary:

This presentation will report on the development of superhydrophobic (SH) and superoleophobic (SO) coatings at Southwest Research Institute (SwRI®). These SH and SO coatings were developed for industries such as the oil and gas (O&G), automotive, and aerospace industries where harsh environments are observed. The coating can be applied onto any metallic or glass surfaces via various applications including plasma enhanced chemical vapor deposition (PECVD), pneumatic spray, and atmospheric pressure plasma jet (APPJ) spray. The coatings have demonstrated promise in this particular application as traditional un-coated, un-patterned surfaces have a high surface energy and yield a water contact angle (WCA) of less than 50° and oil contact angle (OCA) of ~0°. The best coatings produced using these technologies yield water and oil contact angles (WCA and OCA) greater than 150°. These coatings, are typically