Characterization of the dielectric endurance of reinforced recycled PET using electro-thermal aging test

Mebarki, Fouzia; David, Éric

doi:10.1109/tdei.2015.005194

Cited by 5 publications

(4 citation statements)

References 18 publications

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“…Figure shows the dielectric breakdown data before and after thermal aging at 200°C for 360 h for the unfilled recycled PET, compared to the mica‐reinforced recycled PET, glass fiber‐reinforced recycled PET, and the recycled PET reinforced with both mica and glass fibers. The results show that for the unaged samples, the recycled PET exhibits a similar breakdown strength value as the recycled PET filled with mica or glass fibers, similarly to what was reported in a previous study . The breakdown field at percentile 63.2 for the unaged unfilled recycled PET (33.4 kV/mm) was near equal to materials reinforced with glass fibers or mica (33.6 and 36.1 kV/mm).…”

Section: Resultssupporting

confidence: 86%

“…The dielectric response of the unaged recycled PET shows the presence of the usual dielectric relaxation mechanisms in the 10 −2 to 10 5 frequency range, the α and β processes. Most amorphous and semi‐crystalline polymers show a sub‐glassy β relaxation at low temperatures and high frequencies, which is associated with the local chain motion and an α process, which is related to the dynamic glass transition at high temperatures and low frequencies . In addition, at low frequencies and high temperatures, the contribution of the direct conductivity to the dielectric response is clear.…”

Section: Resultsmentioning

confidence: 99%

“…Mica platelets constitute a high voltage dielectric barrier in polymeric insulation materials. Mica fillers are often applied to enhance both resistance to partial discharges and dielectric breakdown strength . Figure illustrates the morphology of both fillers used.…”

Section: Materials and Sample Preparationmentioning

confidence: 99%

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Dielectric characterization of thermally aged recycled Polyethylene Terephthalate and Polyethylene Naphthalate reinforced with inorganic fillers

Mebarki

David

2017

Polymer Engineering & Sci

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In order to assess the influence of the operating temperature on the dielectric properties of recycled Polyethylene Terephthalate (PET) and Polyethylene Naphthalate (PEN) reinforced with inorganic fillers, a dielectric and thermal investigation was undertaken. Specimens were thermally aged at several temperatures between 90 and 2008C for 360 h. The effect of thermal aging time on dielectric and thermal properties was also investigated. The dielectric response and breakdown strength properties were evaluated. Differential scanning calorimetry (DSC) measurements showed that the degree of crystallinity and the glass transition temperature increased with aging temperature and duration. The data obtained showed that these materials exhibited a good resistance to thermal aging at temperatures below 1408C. Furthermore, it was found that the dielectric strength of the recycled PET and PEN and their composites decreased considerably for temperatures of over 1708C. POLYM. ENG. SCI., 58:701-712, 2018. 705 FIG. 7. DSC scans recorded at 108 C/min between 0 and 3008C for (a) the unaged RPET and its composites, and (b) the increase in the crystallinity versus aging temperature as shown by DSC measurements.

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Section: Resultssupporting

confidence: 86%

Section: Resultsmentioning

confidence: 99%

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Dielectric characterization of thermally aged recycled Polyethylene Terephthalate and Polyethylene Naphthalate reinforced with inorganic fillers

Mebarki

David

2017

Polymer Engineering & Sci

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“…In the high-temperature region, with the increment of frequency the activation energy reduces. At higher temperatures, the irregularity of polycrystalline samples may be the origin of additional acceptor centres [43]. Thus, the activation energy reduces with the increment of temperature.…”

Section: Electrical Conductivitymentioning

confidence: 99%

Structure, dielectric and electrical properties of relaxor lead-free double perovskite: Nd2NiMnO6

Das

Choudhary

2019

PAC

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In this paper, dielectric relaxor, impedance, AC conductivity and electrical modulus of double perovskite Nd 2 NiMnO 6 , prepared by a solid state reaction method and sintered at 1250°C, have been reported in the wide temperature (25-150°C) and frequency (1 kHz-1 MHz) ranges. From the preliminary X-ray structural analysis, it is found that the structure of the material is monoclinic. In the study of the temperature dependence of the dielectric constant, the relaxor behaviour of the material is observed. Such type of behaviour is explained by a modified Curie-Weiss and a Vogel-Fulcher law. By analysing Nyquist plots, the existence of grain and grain boundary effects is established. The non-Debye type of relaxation is investigated by the analysis of complex impedance and the modulus data. From the study of impedance data, it is found that the grain resistance is reduced with the increase in temperature indicating the existence of negative temperature coefficient of resistance (NTCR) behaviour in the material which also matches with temperature versus AC conductivity plots. From these results, it may be concluded that this compound may have extreme potential for different high temperature applications.

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Corona discharges aging of recycled PET filled with inorganic reinforcements

Mebarki

David

2015

2015 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)

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Characterization of the dielectric endurance of reinforced recycled PET using electro-thermal aging test

Cited by 5 publications

References 18 publications

Dielectric characterization of thermally aged recycled Polyethylene Terephthalate and Polyethylene Naphthalate reinforced with inorganic fillers

Dielectric characterization of thermally aged recycled Polyethylene Terephthalate and Polyethylene Naphthalate reinforced with inorganic fillers

Structure, dielectric and electrical properties of relaxor lead-free double perovskite: Nd2NiMnO6

Corona discharges aging of recycled PET filled with inorganic reinforcements

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