Accession Number : ADD010844

Title :   Method for Reducing the Adhesion of Ice to the Walls of Navigation Locks.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Jellinek,H H G ; Frankenstein,G E ; Hanamoto,B

Report Date : 17 Nov 1981

Pagination or Media Count : 4

Abstract : This invention relates to a methods of treating surfaces exposed to icing conditions to reduce the bond strength of ice and facilitate its removal from such surfaces. In accordance with this invention, a method is provided for reducing adhesion of ice to a surface comprising coating the surface with a co-polymer of a polycarbonate and dimethylsiloxane. In the preferred method, this co-polymer is mixed with silicon oil. Laboratory tests have shown that the preferred coating will reduce the ice adhesion by over 99%, and is effective through many ice formation and removal cycles. Tests showed that ice is readily removed from the walls of navigation locks which have been coated in accordance with this invention. Ice was more easily removed from a coated section not only by mechanical means but, unexpectedly, by thermal means.

Descriptors :   *Patents, Deicing systems, *Block copolymers, *Locks(Waterways), Ice formation, Walls, Surfaces, Navigation, Ice, Removal, Polymeric films, Coatings, Polycarbonates, Alkyl radicals, Siloxanes, Oils, Adhesion, Reduction

Subject Categories : Snow, Ice and Permafrost
      Plastics
      Structural Engineering and Building Technology

Distribution Statement : APPROVED FOR PUBLIC RELEASE