Space Charge Observation in Aramid/Epoxy Insulations Under DC Electric Fields

Fukunaga, Kaori; Okamoto, Kenji; Maéno, Takashi

doi:10.1109/tcapt.2005.853173

Cited by 3 publications

(1 citation statement)

References 5 publications

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“…For example, the charge quantity at the interface of two layers of polyethylene grows as the time elapses, and transport of electrons are assumed to be responsible for this growth [16,17]. The present authors also reported that a higher amount of charge was observed at an interface of aramid paper and epoxy resin with an increase in the voltage application time [18]. By taking these reports into account, there comes suspicion that the real conductivity values are much higher for both the present two insulators, glass and epoxy resin.…”

Section: Discussionsupporting

confidence: 65%

Space charge distributions in glass fibre/epoxy resin composites under dc 10 kV mm⁻¹electric field

Tanaka

Ohki

Fukunaga

et al. 2007

J. Phys. D: Appl. Phys.

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In this paper, the authors discuss one- and three-dimensional space charge distributions in glass fibre/epoxy resin composites. By the conventional pulsed electroacoustic (PEA) method, only a one-dimensional distribution of the average charge over a whole area parallel to the two electrodes can be observed. Therefore, the authors have developed a new PEA system capable of measuring a three-dimensional space charge distribution. Using this system, they measured the charge distribution in glass fibre/epoxy resin composites made of lattice-woven glass fibre and epoxy resin. It has become clear that spatial variation in signal intensity observed depends on the internal structure of the composite. There appear repetitious positions where a high charge density is observed on the same lateral cross section along the vertical direction in the composite. Such positions are consistent with the intersections of the glass fibres. Accumulation of mobile charge carriers or appearance of polarization charge due to mismatch of the ratio of the conductivity and permittivity between the glass fibre and the epoxy resin is thought to be responsible for the PEA signals.

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Section: Discussionsupporting

confidence: 65%

Space charge distributions in glass fibre/epoxy resin composites under dc 10 kV mm⁻¹electric field

Tanaka

Ohki

Fukunaga

et al. 2007

J. Phys. D: Appl. Phys.

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Space Charge Formation and Charge Transport in Epoxy Resin at Varied Temperatures

Masuzaki

Tian

et al. 2015

IEEJ Trans. FM

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Study of Secondary Electron Emission Depended on Surface Charge of Space Insulator Materials

Feng

Yang

et al. 2014

AMM

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Secondary electron emission (SEE) processes play an essential role in spacecraft surface charging. It is difficult to study SEE of insulator whose surface cumulates charges by incident electron bombardment because of poor conductivity. This paper investigated the theoretical process of generation, transfer and escape of secondary electrons, and finally the paper presented a mathematical model to calculate the secondary electron emission. We also have improved measurement system to measure total SEE coefficient from dielectric with 1-5 keV electron irradiation which is perfectly fit to mathematical model, and the SEE coefficient with different surface charging is investigated. The results indicate the SEE coefficient decreases with positive charging and increase with negative charging of dielectric surface.

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Space Charge Observation in Aramid/Epoxy Insulations Under DC Electric Fields

Cited by 3 publications

References 5 publications

Space charge distributions in glass fibre/epoxy resin composites under dc 10 kV mm⁻¹electric field

Space charge distributions in glass fibre/epoxy resin composites under dc 10 kV mm⁻¹electric field

Space Charge Formation and Charge Transport in Epoxy Resin at Varied Temperatures

Study of Secondary Electron Emission Depended on Surface Charge of Space Insulator Materials

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Space Charge Observation in Aramid/Epoxy Insulations Under DC Electric Fields

Cited by 3 publications

References 5 publications

Space charge distributions in glass fibre/epoxy resin composites under dc 10 kV mm−1electric field

Space charge distributions in glass fibre/epoxy resin composites under dc 10 kV mm−1electric field

Space Charge Formation and Charge Transport in Epoxy Resin at Varied Temperatures

Study of Secondary Electron Emission Depended on Surface Charge of Space Insulator Materials

Contact Info

Product

Resources

About

Space charge distributions in glass fibre/epoxy resin composites under dc 10 kV mm⁻¹electric field

Space charge distributions in glass fibre/epoxy resin composites under dc 10 kV mm⁻¹electric field