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http://dx.doi.org/10.12925/jkocs.2014.31.4.628

Effect of polyol on urethane to increase the cavitation resistance  

Lee, Iksoo (Graduate School of Energy and Environment, Seoul National University of Science and Technology)
Kim, Nackjoo (Graduate School of Energy and Environment, Seoul National University of Science and Technology)
Pak, Daewon (Graduate School of Energy and Environment, Seoul National University of Science and Technology)
Publication Information
Journal of the Korean Applied Science and Technology / v.31, no.4, 2014 , pp. 628-634 More about this Journal
Abstract
In this study, a new paint which is able to resist the cavitation erosion is tried to be developed by using urethane added with polyol such as poly propylene glycol(PPG), poly carbonate diol(PCD), polycaprolactone polyol (PCL-1), and poly caprolactone-tetramethylene gylcolether polyol(PCL-2). The new paint synthesized by adding polyol was characterized with physical properties and resistivity to cavitation erosion. Among polyol, the prepolymer added with PCD showed high hardness and wear resistance. However, due to too high in viscosity, the prepolymer added with PCL-1 was selected as a paint. The paint added with PCL-1 showed high resistivity to cavitation erosion and its surface was monitored by using Scanning Electron Microscope.
Keywords
Cavitation; urethane; polyol; wear resistance; surface analysis;
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