Fabrication and Broadband Dielectric Study of Properties of Nanocomposites Materials Based on Polyurethane
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23220%2F24%3A43972638" target="_blank" >RIV/49777513:23220/24:43972638 - isvavai.cz</a>
Výsledek na webu
<a href="https://ieeexplore.ieee.org/document/10636136" target="_blank" >https://ieeexplore.ieee.org/document/10636136</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1109/ACCESS.2024.3443462" target="_blank" >10.1109/ACCESS.2024.3443462</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Fabrication and Broadband Dielectric Study of Properties of Nanocomposites Materials Based on Polyurethane
Popis výsledku v původním jazyce
The aim of study is addressing the influence of nanoparticles (NPs) on the dielectric properties of polyurethane. In this research, only investigated the effect of Al2O3, MgO and ZnO NPs for concentrations up to 2 wt.% with the temperature range from 25 to 120 °C. During the preparation of nanocomposites, polymer chains bind to NPs, which then limits their mobility. This effect results in a decrease in real permittivity and the course of polarization mechanisms. An increase in permittivity over the entire temperature range only for a 2 wt.% MgO concentration was observed. The decrease in the mobility of polymer chains was confirmed by dynamic-mechanical analysis. This method also results in an increase in the glass transition temperature depending on the type and concentration of NPs. The presence of NPs and the limited mobility of the polymer chains results in a shift of the low-frequency local maximum to lower frequencies.
Název v anglickém jazyce
Fabrication and Broadband Dielectric Study of Properties of Nanocomposites Materials Based on Polyurethane
Popis výsledku anglicky
The aim of study is addressing the influence of nanoparticles (NPs) on the dielectric properties of polyurethane. In this research, only investigated the effect of Al2O3, MgO and ZnO NPs for concentrations up to 2 wt.% with the temperature range from 25 to 120 °C. During the preparation of nanocomposites, polymer chains bind to NPs, which then limits their mobility. This effect results in a decrease in real permittivity and the course of polarization mechanisms. An increase in permittivity over the entire temperature range only for a 2 wt.% MgO concentration was observed. The decrease in the mobility of polymer chains was confirmed by dynamic-mechanical analysis. This method also results in an increase in the glass transition temperature depending on the type and concentration of NPs. The presence of NPs and the limited mobility of the polymer chains results in a shift of the low-frequency local maximum to lower frequencies.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
20201 - Electrical and electronic engineering
Návaznosti výsledku
Projekt
—
Návaznosti
S - Specificky vyzkum na vysokych skolach
Ostatní
Rok uplatnění
2024
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
IEEE Access
ISSN
2169-3536
e-ISSN
2169-3536
Svazek periodika
12
Číslo periodika v rámci svazku
August 2024
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
15
Strana od-do
114227-114241
Kód UT WoS článku
001297408200001
EID výsledku v databázi Scopus
2-s2.0-85201317828