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Coating Surfaces with Superhydrophobic Powder

Oak Ridge National Laboratory

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Publications:

PDF Document PublicationUT-B ID 200601697 5 3 12.pdf (338 KB)

Technology Marketing SummaryResearchers at ORNL have developed a method of modifying existing coating techniques to include a bonded superhydrophobic outer coating layer. Superhydrophobic powder will not readily bond to most substrates directly, since superhydrophobic powder is almost entirely made up of fluorinated particles of silica glass, which is chemically inert to most materials. In a standard electrostatic powder spraying process, dry resin powder is sprayed on to a given substrate. The powder adheres to the substrate by electrostatic forces and becomes permanently bonded to the substrate after the resin powder is heated and/or cured.DescriptionThe developed method is an improvement over standard methods. The novel method could be used to make large superhydrophobic surface areas on a wide variety of substrate materials. The resulting coating can completely repel water and heavy oils leading to potential applications in a number of areas including, but not limited to superhydrophobic, anti-corrosion, anti-icing, and antibacterial coatings.Benefits
  • Allows large, regular or irregular shaped surfaces of nearly any type of material to be coated with superhydrophobic powder
  • Resulting coating will repel water, reduce viscous drag, be resistant to water based corrosion, and be self-cleaning
Applications and Industries
  • Marine coatings
  • Torpedo coatings
  • Anti-icing coatings
  • Anti-bacterial and/or self-cleaning coatings
  • Other fluid dynamic and heat transfer applications
More InformationPatent Application in preparation

John Simpson. Method for Applying and Bonding Superhydrophobic Powder to Large Surface Areas
Patents and Patent Applications
ID Number
Title and Abstract
Primary Lab
Date
Application 20090042469
Application
20090042469
Superhydrophilic and Superhydrophobic Powder Coated Fabric
Superhydrophilic and superhydrophobic fabrics are taught having a superhydrophilic or superhydrophobic powder disposed on the fabric. The superhydrophilic powder has at least one material of sodium borosilicate glass and porous diatomaceous earth. The powder material has a contiguous interpenetrating structure with a plurality of spaced apart nanostructured surface features. The superhydrophilic powder is switched to superhydrophobic by adding at least one superhydrophobic material of perfluorinated organics, fluorinated organics, and self-assembled monolayers.
Oak Ridge National Laboratory 08/10/2007
Filed
Technology Status
Technology IDDevelopment StageAvailabilityPublishedLast Updated
UT-B ID 200601697DevelopmentAvailable07/11/201207/11/2012

Contact ORNL About This Technology

To: Alex G. DeTrana<detranaag@ornl.gov>