Abstract
In this paper, we present a study aimed at clarifying the effects of fluorination time on surface charge accumulation and decay behaviors of fluorinated polyimide films. The samples were surface-fluorinated in a laboratory vessel at about 328 K using a F2/N2 mixture with 20% F2 by volume at 0.05 MPa for 15, 30, 45, and 60 min. Corona charging tests were performed at room temperature with a relative humidity of ∼40%. The chemical composition of the fluorinated layer of the samples was observed. The results indicate that charge density and charge decay rate are markedly affected by fluorination and that the degree of fluorination is affected by treatment duration.
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