ENVIRONMENTALLY FRIENDLY POLYURETHANE COATING ENABLES EASIER REMOVAL OF BIOFOULING ORGANISMS, GRAFFITTI, ICE, ETC. (RFT-572)

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Summary

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Scientists at NDSU have developed a polyurethane coating that reduces the strength with which problematic fouling organisms and materials attach to surfaces. The self-stratifying coating uses a blend of hydrophilic polyethylene glycol (PEG) and hydrophobic polydimethyl siloxane (PDMS) to provide an amphiphilic surface.  The PEG is free floating in the coating, and accumulates in a zone near the coating surface during curing.  As a result, the amphiphilic character of the coating can withstand a substantial amount of wear.  The technology is not designed to prevent attachment of fouling organisms / materials, but is instead designed to make their removal easier. Therefore, the technology would best be applied to situations where a surface can be cleaned with high pressure water, is exposed to rapid liquid flow, or otherwise is accessible for cleaning.

Benefits

  • Comparable fouling release properties to industry standard
  • Mechanical performance significantly improved over silicone elastomers
  • Excellent adhesion eliminates the need for a separate tie-coat
  • Anti-icing performance on marine, airborne, and land-based surfaces
  • Enables easier removal of fouling organisms and materials, making restoration of surfaces much more practical than with existing anti-fouling coatings.

Patents

This technology is U.S. patent pending and is available for licensing/partnering opportunities.

Contact

Henry Nowak, Technology Manager
hnowak@ndsurf.org
(701)231-8173

NDSURF Tech Key

RFT, 572, RFT572

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