Dielectric spectroscopy of fiber-reinforced epoxy materials

Krivda, A.; Page, S. A.; Meier, G.; Wright, Stuart I.

doi:10.1109/icsd.2004.1350393

Cited by 4 publications

(1 citation statement)

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“…This fact may be explained as the effect of progressive, amplified polymerization of the epoxy resin. The increasing polymerization of resins due to the influence of electric and radiation fields is a well known and well described phenomenon [12][13][14][15][16]. Therefore -it is neither surprising nor connected to the deterioration of the properties of the resin.…”

Section: Raman Spectroscopy Examinationmentioning

confidence: 99%

Archives of Metallurgy and Materials

Wieczorek

Jaroszewski

Ranachowski

et al. 2018

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This article presents the results of an examination performed on a set of samples of glass-epoxy core rods used in composite insulators with silicone rubber housings. The goal of the examination was to test the aging resistance of the core material when exposed to Direct Current (DC) high voltage. Long term exposure of a glass-epoxy core rod to DC high voltage may lead to the gradual degradation of its mechanical properties due to the ion migrations. Electrolysis of the core material (glass fiber) may cause electrical breakdown of the insulators and consequently lead to a major failure. After being aged for 6000 hours under DC high voltage, the samples were subjected to microscopic analysis. Their chemical composition was also examined using Raman spectroscopy and their dielectric losses and conductance in the broad range of frequencies were tested using dielectric spectroscopy.

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