Invention Grant
US09255204B2 Cavitation resistant polyurethane compositions and methods of forming coating films using the same 有权
防气蚀聚氨酯组合物和使用其制备涂膜的方法

Cavitation resistant polyurethane compositions and methods of forming coating films using the same
Abstract:
A cavitation resistant polyurethane composition includes a first solution comprising a urethane prepolymer and a second solution. The urethane prepolymer is synthesized by a polymerization of about 60 to about 70 weight percent of an isocynate compound and about 30 to about 40 weight percent of a polyol. An average functional group number of the isocyanate compound is at least 2. The second solution includes about 90 to about 95 weight percent of a polyol having an average functional group number of at least 4, about 1 to about 3 weight percent of a nano-carbon, about 1 to about 3 weight percent of a colorant, about 1 to about 3 weight percent of a moisture absorbent, about 1 to about 3 weight percent of an anti-wear agent, and about 1 to about 3 weight percent of a defoaming agent.
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