Dielectric absorption analysis and dielectric strength of LLDPE/HNT composites exposed to UV radiation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23220%2F18%3A43951498" target="_blank" >RIV/49777513:23220/18:43951498 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.power-engineering.sk/files/docs/2018/zborniky_komplet/OZE.pdf" target="_blank" >http://www.power-engineering.sk/files/docs/2018/zborniky_komplet/OZE.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Dielectric absorption analysis and dielectric strength of LLDPE/HNT composites exposed to UV radiation

Popis výsledku v původním jazyce

This paper deals with the evaluation of the amount of filler influence and the ultraviolet (UV) radiation influence on selected dielectric properties of the innovative type of composites. These composites consist of a linear low-density polyethylene (LLDPE) matrix and a clay filler that contains halloysite nanotubes (HNT) primarily. These composites are prepared with three filling levels and the pure polyethylene is also analyzed as a reference material. The intended application of tested composites is primarily in insulating systems of power cables (conductor insulation and cable sheathing). Attention is paid to the analysis of the behaviour of composites in their charging, which is caused by the connection with the source of the direct current (DC) electricity. The volume resistivity and polarization indexes are determined based on this analysis. Analysis of charging based on the measurement of the current, which flows through the sample under constant applied voltage, is supplemented with the short evaluation of the material behaviour after the disconnecting of the voltage source and after the electrode shorting when the material is discharged. Furthermore, the resistance of tested materials to the effects of alternating current (AC) electricity via the measurement of dielectric strength as another key parameter of electrical insulating materials is determined. Results of analyses of charging and discharging (effects of absorption and resorption processes) and the dielectric strength measurement of materials in the delivered state prove a significant effect of the filling level in the first step. Subsequently, significantly different values of selected parameters because of material exposure to UV radiation are also determined.

Název v anglickém jazyce

Dielectric absorption analysis and dielectric strength of LLDPE/HNT composites exposed to UV radiation

Popis výsledku anglicky

This paper deals with the evaluation of the amount of filler influence and the ultraviolet (UV) radiation influence on selected dielectric properties of the innovative type of composites. These composites consist of a linear low-density polyethylene (LLDPE) matrix and a clay filler that contains halloysite nanotubes (HNT) primarily. These composites are prepared with three filling levels and the pure polyethylene is also analyzed as a reference material. The intended application of tested composites is primarily in insulating systems of power cables (conductor insulation and cable sheathing). Attention is paid to the analysis of the behaviour of composites in their charging, which is caused by the connection with the source of the direct current (DC) electricity. The volume resistivity and polarization indexes are determined based on this analysis. Analysis of charging based on the measurement of the current, which flows through the sample under constant applied voltage, is supplemented with the short evaluation of the material behaviour after the disconnecting of the voltage source and after the electrode shorting when the material is discharged. Furthermore, the resistance of tested materials to the effects of alternating current (AC) electricity via the measurement of dielectric strength as another key parameter of electrical insulating materials is determined. Results of analyses of charging and discharging (effects of absorption and resorption processes) and the dielectric strength measurement of materials in the delivered state prove a significant effect of the filling level in the first step. Subsequently, significantly different values of selected parameters because of material exposure to UV radiation are also determined.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of the 7th International Scientific Conference OZE 2018 : Renewable Energy Sources 2018

ISBN

978-80-89983-03-2

ISSN

2585-9668

e-ISSN

neuvedeno

Počet stran výsledku

6

Strana od-do

61-66

Název nakladatele

Slovak University of Technology in Bratislava

Místo vydání

Bratislava

Místo konání akce

Tatranské Matliare, Slovak Republic

Datum konání akce

5. 6. 2018

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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