Fabrication and Broadband Dielectric Study of Properties of Nanocomposites Materials Based on Polyurethane
The result's identifiers
Result code in 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>
Result on the web
<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>
Alternative languages
Result language
angličtina
Original language name
Fabrication and Broadband Dielectric Study of Properties of Nanocomposites Materials Based on Polyurethane
Original language description
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.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20201 - Electrical and electronic engineering
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
IEEE Access
ISSN
2169-3536
e-ISSN
2169-3536
Volume of the periodical
12
Issue of the periodical within the volume
August 2024
Country of publishing house
US - UNITED STATES
Number of pages
15
Pages from-to
114227-114241
UT code for WoS article
001297408200001
EID of the result in the Scopus database
2-s2.0-85201317828