Author(s): L. O. Andersson
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Keywords: No Keywords
Abstract: The objective of this study was to investigate the factors that govern icing on different surfaces and the mechanisms that impart interfacial strength between ice and substrate. A literature survey showed that icing on rubber has been investigated very little, the studies available mainly refer to polyurethanes. The usual approach to handle icing problems seemed to be to alternate the chemistry of the surface. The dependence of surface roughness and texture was only briefly mentioned. The experimental work in this study was focused on: 1) Icing on rubbers 2) The dependence of surface roughness/smoothness on icing. Different rubber vulcanisates containing only polymer and curing agent (peroxide) were compared with commercially available rubbers regarding wettability and interfacial shear strength. The dependence of different grades and amounts of carbon black was also studied. Furthermore different plant surface textures have been investigated. Contact angles, measured on sessile drops of de-ionized water, in excess of 140°, were found for leaves from several types of plants. In these cases the surfaces remained absolutely dry after being immersed in water.
Year: 1988