Accession Number : ADP001677

Title :   How Effective are Icephobic Coatings?

Corporate Author : COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH

Personal Author(s) : Minsk,L. David

Report Date : JUN 1983

Pagination or Media Count : 3

Abstract : Much effort over many years has gone into the search for an effective, durable, easily applied and inexpensive material to eliminate the force of adhesion between ice and a substrate. The objective of zero ice adhesion on an unheated surface which would either prevent the formation of ice or ensure self-shedding of very thin accretions has not yet been achieved. Many commercially-available coatings do succeed in reducing the force of adhesion below 15 psi (103.4 kPa) and survive at least five freeze-release cycles, two arbitrarily established criteria. Exposure to rain erosion, however, increases the force of adhesion beyond this value for most materials. As part of a continuing project at CRREL, a test procedure for measuring the shear strength of ice at failure has been developed and a large number of candidate materials have been tested. (Author)

Descriptors :   *Deicing materials, *Deicing systems, *Protective coatings, *Cold weather tests, Ice, Ice formation, Helicopter rotors, Rotor blades, Laboratory tests, Operational effectiveness, Test methods, Aluminum, Rain erosion, Surface analysis, Operational effectiveness, Workshops

Distribution Statement : APPROVED FOR PUBLIC RELEASE