Surface roughness change of epoxy/TiO/sub 2/ nanocomposites due to partial discharges

Kozako, Masahiro; Kido, Ryō; Imai, T.; Ozaki, T.; Shimizu, Toshio; Tanaka, Toshikatsu

doi:10.1109/iseim.2005.193456

Cited by 25 publications

(20 citation statements)

References 6 publications

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“…[9][10][11][12]. Moreover, surface profilometry and partial discharge activity measurements both supported this observation.…”

Section: Discussionsupporting

confidence: 60%

“…Statistically small changes could be seen with the surface roughness and PD activity within the last hours of the test (Figs. [9][10][11][12]. This indicates that the measurement time should maybe have been longer.…”

Section: Discussionmentioning

confidence: 99%

“…Surface degradation due to partial discharges of polymers e.g. epoxy, polyamide (PA), polyimide (PI), polyethylene (PE), PP has been studied in various articles [1][2][3][4][5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Surface Degradation of Nanostructured Polypropylene Compounds Caused by Partial Discharges

Takala

Sallinen

Nevalainen

et al. 2008

Conference Record of the 2008 IEEE International Symposium on Electrical Insulation

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This paper presents the results of the surface degradation measurements conducted on nanostructured polymer compounds consisting of polypropylene (PP), polyaniline (PANI) and acrylic acid (AA). According to prior investigations the chosen additives have improved the electrical performance of polypropylene e.g. dielectric breakdown strength and relative permittivity. Materials were subjected to high voltage stress leading to partial discharges (PD). Surface degradation was measured with optical profilometry. The partial discharge activity during corona bombardment was also measured. The measurements were conducted at the high voltage laboratory of Tampere University of Technology. Statistical analysis was applied to the results to determine the effects of the additive on the surface degradation and PD activity of polypropylene.

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“…[9][10][11][12]. Moreover, surface profilometry and partial discharge activity measurements both supported this observation.…”

Section: Discussionsupporting

confidence: 60%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Surface Degradation of Nanostructured Polypropylene Compounds Caused by Partial Discharges

Takala

Sallinen

Nevalainen

et al. 2008

Conference Record of the 2008 IEEE International Symposium on Electrical Insulation

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“…Due to effect of nanocomposite material the nanofilled enamel had lifetime more than 100 times longer than standard wire under pulse voltage 0,8 kV/ 20 kHz at room temperature and at 180 ˚C ( Figure 1) and also better thermal properties. Nanofilled enamels shows less surface erosion after enhanced PD activity [5,6]. Figure 2 shows the temperature dependence of loss factor tan δ.…”

Section: Enamels For Winding Wiresmentioning

confidence: 99%

Nanocomposites for turn insulation for inverter fed motors

Górnicka

Wojcieszak

2008

2008 31st International Spring Seminar on Electronics Technology

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In the paper nanocomposites for turn insulation of inverter fed motors have been proposed. The results of the modifying both enamelled winding wires and impregnating varnishes with nanoparticles is shown. The presented nanocomposites offer a much longer lifetime then conventional insulation under pulse voltage generated by inverter due to barrier effect to partial discharges. Thermal and mechanical properties of nanofilled varnishes have been also improved because the nanoparticles behave as a physical crosslinker in the interface layer.

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“…Kozako et al [3] investigated the surface degradation of epoxy resin with TiO 2 nanocomposites and observed that the surface degradation of the epoxy resin reduced with the increase in concentration of nanocomposite particles implying an increase in PD resistance. Bulinski et al [4] reported that short term AC breakdown strength of the PP improved by ~ 10% with the introduction of either synthetic or natural organic clay nanocomposites when compared to the unfilled PP.…”

Section: Introductionmentioning

confidence: 99%

Comparative study of synthetic and natural clay filled PP films under surface discharges

Dhara

Rab

Basappa

2014

2014 IEEE Electrical Insulation Conference (EIC)

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It is known from literature that addition of small wt% of nanofillers into pure polypropylene matrix improves the electrical characteristics by many folds. This study is intended to compare the effect of natural and synthetic nanocomposites on the PD resistance when introduced in small concentrations in the base PP material. This work investigates the effect of type of nanofiller and its content on the PD resistance of PP films under surface discharges. The sample aging is performed under a voltage that constantly increases with time (Ramp voltage) to minimize the effect of space charge redistribution during the aging process on the sample PD behavior and PD characteristics. Samples with 0, 2, 6 wt% of natural organoclay nanocomposites and 2, 4, 8 wt% of synthetic organo clay nanocomposites are considered for this purpose. These samples are subjected to surface PDs and the degree of surface erosion is quantified by Optical microscope and surface Profilometer.

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Surface roughness change of epoxy/TiO/sub 2/ nanocomposites due to partial discharges

Cited by 25 publications

References 6 publications

Surface Degradation of Nanostructured Polypropylene Compounds Caused by Partial Discharges

Surface Degradation of Nanostructured Polypropylene Compounds Caused by Partial Discharges

Nanocomposites for turn insulation for inverter fed motors

Comparative study of synthetic and natural clay filled PP films under surface discharges

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