Surface modification of epoxy resin using He/CF 4 atmospheric pressure plasma jet for flashover withstanding characteristics improvement in vacuum
Source abstract
Abstract
Abstract For enhancing the surface electric withstanding strength of insulating materials, epoxy resin (EP) samples are treated by atmospheric pressure plasma jet (APPJ) with different time interval from 0 to 300s. Helium (He) and tetrafluoromethane (CF 4 ) mixtures are used as working gases with the concentration of CF 4 ranging 0%-5%, and when CF 4 is ∼3%, the APPJ exhibits an optimal steady state. The flashover withstanding characteristics of modified EP in vacuum are greatly improved under appropriate APPJ treatment conditions. The surface properties of EP samples are evaluated by surface roughness, scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS) and water contact angle. It is considered that both physical and chemical effects lead to the enhancement of flashover strength. The physical effect is reflected in the increase of surface roughness, while the chemical effect is reflected in the graft of fluorine groups.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: High voltage insulation and dielectric phenomena · Surface Modification and Superhydrophobicity · Plasma Applications and Diagnostics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (31)
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