Superhydrophobic and oleophobic coating for aluminum heat exchangers based on textured surfaces

Superhydrophobic and oleophobic coating for aluminum heat exchangers based on textured surfaces

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N68335-18-C-0577
Agency Tracking Number: N181-019-0795
Amount: $124,964.00
Phase: Phase I
Program: SBIR
Awards Year: 2018
Solicitation Year: 2018
Solicitation Topic Code: N181-019
Solicitation Number: 2018.1
Small Business Information
737 Concord Avenue, Cambridge, MA, 02138
DUNS: 557201394
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Christopher Thompson
 (617) 621-8500
 cthompson@nanoterra.com
Business Contact
 Peter Howe
Phone: (617) 621-8500
Email: phowe@nanoterra.com
Research Institution
N/A
Abstract
Aluminum heat exchangers suffer from reduced performance and increased maintenance due to fouling. Of the coatings currently available for heat exchangers, most are severely fouled when the coating surface comes in contact with oils and dust. A superhydrophobic and oleophobic coating would reduce fouling and make cleaning easier. Nano Terra has developed a coating for aluminum parts, called NT-AL, based on a textured, low energy surface which completely resists wetting by water and oil. The coating is < 30 micrometers thick and so would not interfere with heat transfer. It is erosion resistant and is intimately bonded to the aluminum surface so that the coating will be robust even in high particulate environments. In this program, Nano Terra will refine the NT-AL process for the Navys heat exchangers and verify the maintained performance, fouling resistance and wear resistance. In parallel, Nano Terra will develop a low-surface energy polymer coating with a textured surface that will provide similar superhydrophobicity and oleophobicity to NT-AL but potentially better erosion resistance and different chemical stability. Finally, Nano Terra will apply the best two of these approaches to heat exchangers and show improved performance in fouling conditions.

* Information listed above is at the time of submission. *

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