Seggern, Heinz von ; Zhukov, Sergey ; Dali, Omar Ben ; Hartmann, Claas ; Sessler, Gerhard M. ; Kupnik, Mario (2022)
Highly Efficient Piezoelectrets through Ultra-Soft Elastomeric Spacers.
In: Polymers, 2022, 13 (21)
doi: 10.26083/tuprints-00019969
Artikel, Zweitveröffentlichung, Verlagsversion
Kurzbeschreibung (Abstract)
Piezoelectrets are artificial ferroelectrics that are produced from non-polar air-filled porous polymers by symmetry breaking through high-voltage-induced Paschen breakdown in air. A new strategy for three-layer polymer sandwiches is introduced by separating the electrical from the mechanical response. A 3D-printed grid of periodically spaced thermoplastic polyurethane (TPU) spacers and air channels was sandwiched between two thin fluoroethylene propylene (FEP) films. After corona charging, the air-filled sections acted as electroactive elements, while the ultra-soft TPU sections determined the mechanical stiffness. Due to the ultra-soft TPU sections, very high quasi-static (22,000 pC N⁻¹) and dynamic (7500 pC N⁻¹) d₃₃ coefficients were achieved. The isothermal stability of the d₃₃ coefficients showed a strong dependence on poling temperature. Furthermore, the thermally stimulated discharge currents revealed well-known instability of positive charge carriers in FEP, thereby offering the possibility of stabilization by high-temperature poling. The dependences of the dynamic d₃₃ coefficient on seismic mass and acceleration showed high coefficients, even at accelerations approaching that of gravity. An advanced analytical model rationalizes the magnitude of the obtained quasi-static d₃₃ coefficients of the suggested structure indicating a potential for further optimization.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2022 |
| Autor(en): | Seggern, Heinz von ; Zhukov, Sergey ; Dali, Omar Ben ; Hartmann, Claas ; Sessler, Gerhard M. ; Kupnik, Mario |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Highly Efficient Piezoelectrets through Ultra-Soft Elastomeric Spacers |
| Sprache: | Englisch |
| Publikationsjahr: | 2022 |
| Publikationsdatum der Erstveröffentlichung: | 2022 |
| Verlag: | MDPI |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Polymers |
| Jahrgang/Volume einer Zeitschrift: | 13 |
| (Heft-)Nummer: | 21 |
| Kollation: | 14 Seiten |
| DOI: | 10.26083/tuprints-00019969 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/19969 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichung DeepGreen |
| Kurzbeschreibung (Abstract): | Piezoelectrets are artificial ferroelectrics that are produced from non-polar air-filled porous polymers by symmetry breaking through high-voltage-induced Paschen breakdown in air. A new strategy for three-layer polymer sandwiches is introduced by separating the electrical from the mechanical response. A 3D-printed grid of periodically spaced thermoplastic polyurethane (TPU) spacers and air channels was sandwiched between two thin fluoroethylene propylene (FEP) films. After corona charging, the air-filled sections acted as electroactive elements, while the ultra-soft TPU sections determined the mechanical stiffness. Due to the ultra-soft TPU sections, very high quasi-static (22,000 pC N⁻¹) and dynamic (7500 pC N⁻¹) d₃₃ coefficients were achieved. The isothermal stability of the d₃₃ coefficients showed a strong dependence on poling temperature. Furthermore, the thermally stimulated discharge currents revealed well-known instability of positive charge carriers in FEP, thereby offering the possibility of stabilization by high-temperature poling. The dependences of the dynamic d₃₃ coefficient on seismic mass and acceleration showed high coefficients, even at accelerations approaching that of gravity. An advanced analytical model rationalizes the magnitude of the obtained quasi-static d₃₃ coefficients of the suggested structure indicating a potential for further optimization. |
| Freie Schlagworte: | ferroelectret, piezoelectret, fluoropolymer, elastomer, FEP, TPU |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-199691 |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 540 Chemie 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften und Maschinenbau |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Elektronische Materialeigenschaften 18 Fachbereich Elektrotechnik und Informationstechnik 18 Fachbereich Elektrotechnik und Informationstechnik > Mess- und Sensortechnik |
| Hinterlegungsdatum: | 02 Mai 2022 11:25 |
| Letzte Änderung: | 03 Mai 2022 04:57 |
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