THE ICING OF AIRCRAFT WINGS AND OTHER STRUCTURES DURING FREEZING RAIN CONDITIONS HAS PRESENTED A CIVILIAN AND MILITARY PROBLEM FOR MANY YEARS.

Award Information
Agency:
National Science Foundation
Branch
n/a
Amount:
$39,000.00
Award Year:
1985
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
2697
Agency Tracking Number:
2697
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
10 Springborn Center, Enfield, CT, 06082
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
PAUL B WILLIS
PROJECT MANAGER
(203) 749-8371
Business Contact:
() -
Research Institute:
n/a
Abstract
THE ICING OF AIRCRAFT WINGS AND OTHER STRUCTURES DURING FREEZING RAIN CONDITIONS HAS PRESENTED A CIVILIAN AND MILITARY PROBLEM FOR MANY YEARS. ICEPHOBIC COATINGS THAT LOWER THE ADHESIVE BOND STRENGTH OF THE ICE TO THE CONTACT SURFACE ARE PERHAPS THE BEST APPROACH TO THIS PROBLEM. WITHLOW ADHESION, THE ICE IS REMOVED BY THE APPLICATION OF A LITTLE ADDITIONAL FORCE. THE MOST SUCCESSFUL ICEPHOBICS EVALUATED TO DATE ARE BASED ON SILICONE CHEMISTRY AND APPEARTO FUNCTION WELL INITIALLY, REDUCING THE SHEAR STRENGTH TO 5 PSI. THE DIFFICULTY WITH THESE MATERIALS IS THAT THEIR EFFECTIVENESS IS LOST THROUGH ENVIRONMENTAL ERROSION EFFECTS. IT IS BELIEVED THAT THIS PROBLEM MAY BE SOLVED WITH THE USE OF FLUORINE-MODIFIED SILICONE/URETHANE ELASTOMERIC COATINGS. SUCH COMPOUNDS, PREPARED FROM THE REACTION OF ISOCYANATES AND FLUOROALKYL SILOXANE DIOLS, SHOULD HAVE PROPERTIES IDEAL FOR THIS APPLICATION. THE PRESENCE OF LONG CHAIN FLUOROALKYL GROUPS SHOULD REDUCE SURFACE ENERGY AND WETTING, SUCH THAT ICE ADHESION IS REDUCED TO A MINIMUM. THE POLY(SILOXANE) SEGEMENTS CONTRIBUTE FLEXIBILITY AND ELONGATION, AND THE URETHANE FUNCTIONALITY SHOULD GIVE A TOUGH ABRASION-RESISTANT AND LONG-LIFE COMPOSITION. BOTH THERMOPLASTIC AND CURABLE FORMULATIONS WILL BE EVALUATED FOR PHYSICAL PROPERTIES, SURFACE ENERGY AND ICE ADHESION. THIS GRANT IS FUNDED AS PHASE I OF SMALL BUSINESS INNSERTIONRESEARCH.

* information listed above is at the time of submission.

Agency Micro-sites


SBA logo

Department of Agriculture logo

Department of Commerce logo

Department of Defense logo

Department of Education logo

Department of Energy logo

Department of Health and Human Services logo

Department of Homeland Security logo

Department of Transportation logo

Enviromental Protection Agency logo

National Aeronautics and Space Administration logo

National Science Foundation logo
US Flag An Official Website of the United States Government