Effect of humidity on the breakdown strength and diffusion characteristics of polymer film
Dielectric breakdown strength and diffusion characteristics were measured for polyimide and polyimide fluorocarbon polymer film at different weathering conditions. The dielectric breakdown strength and the diffusion coefficient were found to decrease in humid conditions. Different diffusion characteristics as well as breakdown mechanisms were observed on both sides in the PMF-1 polymer film. The permeation coefficient and diffusion coefficient decrease, thereby increasing the breakdown strength in more humid conditions that may be due to the formation of double potential well in the polymer film.
Volume 43, 2020
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