2005 · 19 citations · 0 references
Natural SciencesMaterials EngineeringMaterials SciencePolymer ChemistrySurface ChemistrySurface ScienceCondensationCondensation ProcessesPolymer SurfacesSurface HydrophilicitySurface HydrophobicitySurface ModificationData ProcessingFourier Transform Infrared SpectroscopyOxygen Content AnalysisPartial DischargeSilicone ElastomersSurface CondensationSurface Wettability EffectsWetting Phenomena
According to the measurement and data processing of partial discharges due to discrete water droplets on the surface of silicone rubber, phase characteristic of partial discharge for water droplets is obtained. And the change of silicone rubber surface structure by the Fourier Transform Infrared Spectroscopy (FTIR) is analyzed. The energy and ozone produced in discharges between water droplets induces some chemical reactions such as scission, oxidation, cross-linking, hydrolysis and condensation. These reactions produce hydrophilic silanol at its surface, destroy symmetrical structure of methyl and increase its oxygen content, which cause the decrease of hydrophobicity.