Dielectric Properties and Energy Storage of Hybrid/Boron Nitride/Titanium Carbide/Epoxy Nanocomposites
In this study, hybrid boron nitride (BN)/titanium carbide (TiC)/epoxy resin composite nanodielectrics were manufactured and characterized. Their morphological and structural characterization was conducted via scanning electron microscopy (SEM) images and X-ray diffraction (XRD) patterns, whereas the...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-09-01
|
| Series: | Journal of Composites Science |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2504-477X/6/9/259 |
| _version_ | 1797486581223784448 |
|---|---|
| author | Chryssanthi Blatsi Anastasios C. Patsidis Georgios C. Psarras |
| author_facet | Chryssanthi Blatsi Anastasios C. Patsidis Georgios C. Psarras |
| author_sort | Chryssanthi Blatsi |
| collection | DOAJ |
| description | In this study, hybrid boron nitride (BN)/titanium carbide (TiC)/epoxy resin composite nanodielectrics were manufactured and characterized. Their morphological and structural characterization was conducted via scanning electron microscopy (SEM) images and X-ray diffraction (XRD) patterns, whereas the dielectric behavior was studied by means of broadband dielectric spectroscopy (BDS). Dielectric measurements were carried out from 30 to 160 °C and from 10<sup>−1</sup> to 10<sup>6</sup> Hz, respectively. The dielectric results revealed the existence of three relaxation mechanisms, which from high to low frequencies, at constant temperature, refer to re-arrangement of polar-side groups (β-relaxation) of the macromolecular chains, transition from glassy to rubbery state of the amorphous polymer matrix (α-relaxation) and interfacial polarization (IP) between the polymer matrix and the nanofillers. It was found that, in general, nanodielectrics exhibited enhanced dielectric properties mainly due to the high dielectric permittivity of TiC and the fine dispersion of the fillers, confirmed also by the SEM images. Dynamic analysis conducted for the α-relaxation showed a Vogel–Fulcher–Tammann dependence on temperature. The ability of energy storing of the nanocomposites was examined via their energy density. Optimum performance is exhibited by the 5 phr TiC/1 phr BN/epoxy nanocomposite, reaching an energy storing ability nine times greater than the unfilled matrix. |
| first_indexed | 2024-03-09T23:35:15Z |
| format | Article |
| id | doaj.art-92a12906064841d6815d798398ed2c15 |
| institution | Directory Open Access Journal |
| issn | 2504-477X |
| language | English |
| last_indexed | 2024-03-09T23:35:15Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Composites Science |
| spelling | doaj.art-92a12906064841d6815d798398ed2c152023-11-23T17:02:14ZengMDPI AGJournal of Composites Science2504-477X2022-09-016925910.3390/jcs6090259Dielectric Properties and Energy Storage of Hybrid/Boron Nitride/Titanium Carbide/Epoxy NanocompositesChryssanthi Blatsi0Anastasios C. Patsidis1Georgios C. Psarras2Smart Materials & Nanodielectrics Laboratory, Department of Materials Science, School of Natural Sciences, University of Patras, 26504 Patras, GreeceSmart Materials & Nanodielectrics Laboratory, Department of Materials Science, School of Natural Sciences, University of Patras, 26504 Patras, GreeceSmart Materials & Nanodielectrics Laboratory, Department of Materials Science, School of Natural Sciences, University of Patras, 26504 Patras, GreeceIn this study, hybrid boron nitride (BN)/titanium carbide (TiC)/epoxy resin composite nanodielectrics were manufactured and characterized. Their morphological and structural characterization was conducted via scanning electron microscopy (SEM) images and X-ray diffraction (XRD) patterns, whereas the dielectric behavior was studied by means of broadband dielectric spectroscopy (BDS). Dielectric measurements were carried out from 30 to 160 °C and from 10<sup>−1</sup> to 10<sup>6</sup> Hz, respectively. The dielectric results revealed the existence of three relaxation mechanisms, which from high to low frequencies, at constant temperature, refer to re-arrangement of polar-side groups (β-relaxation) of the macromolecular chains, transition from glassy to rubbery state of the amorphous polymer matrix (α-relaxation) and interfacial polarization (IP) between the polymer matrix and the nanofillers. It was found that, in general, nanodielectrics exhibited enhanced dielectric properties mainly due to the high dielectric permittivity of TiC and the fine dispersion of the fillers, confirmed also by the SEM images. Dynamic analysis conducted for the α-relaxation showed a Vogel–Fulcher–Tammann dependence on temperature. The ability of energy storing of the nanocomposites was examined via their energy density. Optimum performance is exhibited by the 5 phr TiC/1 phr BN/epoxy nanocomposite, reaching an energy storing ability nine times greater than the unfilled matrix.https://www.mdpi.com/2504-477X/6/9/259hybrid nanocompositesnanodielectricsdielectric relaxationselectrical propertiesenergy storing |
| spellingShingle | Chryssanthi Blatsi Anastasios C. Patsidis Georgios C. Psarras Dielectric Properties and Energy Storage of Hybrid/Boron Nitride/Titanium Carbide/Epoxy Nanocomposites Journal of Composites Science hybrid nanocomposites nanodielectrics dielectric relaxations electrical properties energy storing |
| title | Dielectric Properties and Energy Storage of Hybrid/Boron Nitride/Titanium Carbide/Epoxy Nanocomposites |
| title_full | Dielectric Properties and Energy Storage of Hybrid/Boron Nitride/Titanium Carbide/Epoxy Nanocomposites |
| title_fullStr | Dielectric Properties and Energy Storage of Hybrid/Boron Nitride/Titanium Carbide/Epoxy Nanocomposites |
| title_full_unstemmed | Dielectric Properties and Energy Storage of Hybrid/Boron Nitride/Titanium Carbide/Epoxy Nanocomposites |
| title_short | Dielectric Properties and Energy Storage of Hybrid/Boron Nitride/Titanium Carbide/Epoxy Nanocomposites |
| title_sort | dielectric properties and energy storage of hybrid boron nitride titanium carbide epoxy nanocomposites |
| topic | hybrid nanocomposites nanodielectrics dielectric relaxations electrical properties energy storing |
| url | https://www.mdpi.com/2504-477X/6/9/259 |
| work_keys_str_mv | AT chryssanthiblatsi dielectricpropertiesandenergystorageofhybridboronnitridetitaniumcarbideepoxynanocomposites AT anastasioscpatsidis dielectricpropertiesandenergystorageofhybridboronnitridetitaniumcarbideepoxynanocomposites AT georgioscpsarras dielectricpropertiesandenergystorageofhybridboronnitridetitaniumcarbideepoxynanocomposites |