Dielectric and thermal properties of self-healing carboxylated nitrile rubber ionically cross-linked with zinc oxide

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23220%2F22%3A43965558" target="_blank" >RIV/49777513:23220/22:43965558 - isvavai.cz</a>

Výsledek na webu

<a href="https://ieeexplore.ieee.org/document/9833189" target="_blank" >https://ieeexplore.ieee.org/document/9833189</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/EIC51169.2022.9833189" target="_blank" >10.1109/EIC51169.2022.9833189</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Dielectric and thermal properties of self-healing carboxylated nitrile rubber ionically cross-linked with zinc oxide

Popis výsledku v původním jazyce

Dielectric and thermal properties of carboxylated nitrile rubber (XNBR), ionically cross-linked with zinc oxide (ZnO), were characterized to verify its suitability for a high-voltage insulation application. Moreover, the material self-healing (SH) capabilities were assessed after dielectric strength measurement by following IEC 60243. The initial thermal characterization via simultaneous thermal analysis (STA) showed that the material is thermo-oxidatively stable to around 330 °C when the weight loss reaches about 3 %. The dielectric properties of the material as a function of temperature and frequency were analyzed using broadband dielectric spectroscopy (BDS). BDS revealed that dielectric constant and loss factor values reach the generally acceptable level for an insulation material at the industrial frequency (50 Hz) and temperatures below -20 °C. At higher frequencies (specifically at 1 MHz) and temperatures of 60 °C, a significant increase of the values are evidenced, which is affected by polarization processes. Furthermore, it was found that the tested material achieves mean values of volume and surface resistivity of 5.12E+08 Ω•cm and 2.01E+10 Ω, respectively, and a relatively low value of dielectric strength (12 kV/mm). A detailed analysis of the dynamic electrical breakdown process showed that the tested material could partly heal its chain structure, especially in the early stages of breakdown&apos;s channel formation.

Název v anglickém jazyce

Dielectric and thermal properties of self-healing carboxylated nitrile rubber ionically cross-linked with zinc oxide

Popis výsledku anglicky

Dielectric and thermal properties of carboxylated nitrile rubber (XNBR), ionically cross-linked with zinc oxide (ZnO), were characterized to verify its suitability for a high-voltage insulation application. Moreover, the material self-healing (SH) capabilities were assessed after dielectric strength measurement by following IEC 60243. The initial thermal characterization via simultaneous thermal analysis (STA) showed that the material is thermo-oxidatively stable to around 330 °C when the weight loss reaches about 3 %. The dielectric properties of the material as a function of temperature and frequency were analyzed using broadband dielectric spectroscopy (BDS). BDS revealed that dielectric constant and loss factor values reach the generally acceptable level for an insulation material at the industrial frequency (50 Hz) and temperatures below -20 °C. At higher frequencies (specifically at 1 MHz) and temperatures of 60 °C, a significant increase of the values are evidenced, which is affected by polarization processes. Furthermore, it was found that the tested material achieves mean values of volume and surface resistivity of 5.12E+08 Ω•cm and 2.01E+10 Ω, respectively, and a relatively low value of dielectric strength (12 kV/mm). A detailed analysis of the dynamic electrical breakdown process showed that the tested material could partly heal its chain structure, especially in the early stages of breakdown&apos;s channel formation.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

2022 IEEE Electrical Insulation Conference (EIC 2022) : /proceedings/

ISBN

978-1-66548-023-9

ISSN

—

e-ISSN

2576-6791

Počet stran výsledku

4

Strana od-do

124-127

Název nakladatele

IEEE

Místo vydání

Piscaway

Místo konání akce

Knoxville, Tennessee, USA

Datum konání akce

19. 6. 2022

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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