An Evaluation of Polymer Coatings for the Promotion of Dropwise Condensation of Steam.
NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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Fifteen polymer coatings were evaluated for their ability to promote and sustain dropwise condensation of steam to enhance the heat transfer capability of steam condensers. Of the fifteen coatings, nine employed a fluoropolymer as a major constituent. Of the other six, four were hydrocarbons, one a chlorocarbon and one a silicone. Each coating was applied to four different metal substrates brass, copper, naval brass, and titanium. While exposed to steam at atmospheric pressure, each coating was visually evaluated for its ability to promote dropwise condensation. Observations were conducted over a period of 4000 hours. Hardness and adhesion tests were performed on selected specimens both before and after exposure.
- Coatings, Colorants and Finishes
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