Effect of surface charge on hydrophobicity levels of insulating materials
作者： V.M. Moreno-Villa , M.A. Ponce-Velez , E. Valle-Jaime , J.L. Fierro-Chávez
关键词: Surface charge 、 Ceramic 、 Partial discharge 、 Materials science 、 Capacitance 、 Polymer 、 Insulator (electricity) 、 Chemical physics 、 Contact angle 、 Analytical chemistry 、 Charge decay
摘要: A correlation between the hydrophobic characteristics and accumulation of static charge on several insulating surfaces (ceramic nonceramic) is studied. This experiment consists simultaneous measurements surface decay contact angle recovery against time samples previously exposed to corona impingement; a comparison hydrophobicity trends then made. From data obtained, lowering original level for each material as consequence identified. The corresponding initial with are observed. Loss resulting from charging decay, respectively, identified mechanisms occurring not only polymeric surfaces, but also ceramic ones. number laboratory studies, it has been confirmed extensively reported by researchers that insulators due electrical activity (partial discharging) can be achieved. Based above, well results obtained this experimental work, phenomenon which may occur under realistic operational conditions, therefore proposed factor responsible loss highly coatings, in addition other established mechanisms.
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