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https://hdl.handle.net/123456789/345| Τύπος: | Άρθρο σε επιστημονικό περιοδικό |
| Τίτλος: | The role of synergies of MWCNTs and carbon black in the enhancement of the electrical and mechanical response of modified epoxy resins |
| Συγγραφέας: | [EL] Φωτεινίδης, Γεώργιος[EN] Foteinidis, Georgios [EL] Τσίρκα, Κυριακή[EN] Tsirka, Kyriaki [EL] Τζούνης, Λάζαρος[EN] Tzounis, Lazaros [EL] Μπαλτζής, Δημήτριος[EN] Baltzis, Dimitrios [EL] Παϊπέτης, Αλκιβιάδης[EN] Paipetis, Alkiviadis |
| Ημερομηνία: | 08/09/2019 |
| Περίληψη: | : Nano-reinforced composites are widely studied by the scientific community. The main factors affecting the final nanocomposite performance are the filler type and content, as well as the duration of the dispersion. In this work, we report the effects of Multi-Walled Carbon Nano Tubes (MWCNTs) and milled Carbon Black (CB) dispersion in epoxy resin on the electrical and mechanical properties of the resulting composites. Impedance Spectroscopy (IS) was utilized to assess the dielectric properties of the specimens. The mechanical properties were evaluated by fracture toughness tests, while Scanning Electron Microscopy (SEM) was performed to study the influence of the reinforcement on the failure mechanisms acting on the fracture surfaces of the specimens. IS results for epoxy/CNT systems revealed the creation of a 3D conductive network for concentrations above 0.3 wt. %, while CB did not result in the formation of such a network for filler contents up to 2 wt. %. However, the synergistic effect of CNTs/CB was successfully manifested by both the optimal electrical properties and the 81% enhanced fracture toughness in comparison to the neat resin. Fractography confirmed the aforementioned results and revealed the fracture mechanisms of all systems, such as crack pinning and deflection, and particle pull-out phenomena. |
| Γλώσσα: | Αγγλικά |
| Σελίδες: | 15 |
| DOI: | 10.3390/app9183757 |
| ISSN: | 2076-3417 |
| Θεματική κατηγορία: | [EL] Επιστήμη υλικών, γενικά[EN] Materials Science, general [EL] Επιστήμη υλικών, χαρακτηρισμός και δοκιμές[EN] Materials Science, Characterization and testing [EL] Μηχανική Υλικών[EN] Materials Engineering |
| Λέξεις-κλειδιά: | nanocomposites; hybrid composites; impedance spectroscopy; fracture toughness; fractography |
| Κάτοχος πνευματικών δικαιωμάτων: | © 2019 by the authors. Licensee MDPI |
| Όροι και προϋποθέσεις δικαιωμάτων: | This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
| Ηλεκτρονική διεύθυνση του τεκμηρίου στον εκδότη: | https://www.mdpi.com/2076-3417/9/18/3757 |
| Ηλεκτρονική διεύθυνση περιοδικού: | https://www.mdpi.com/journal/applsci |
| Τίτλος πηγής δημοσίευσης: | Applied sciences |
| Τεύχος: | 18 |
| Τόμος: | 9 |
| Σελίδες τεκμηρίου (στην πηγή): | Article no 3757 |
| Σημειώσεις: | This research has been co-financed by the Operational Program “Human Resources Development, Education and Lifelong Learning” and is co-financed by the European Union (European Social Fund) and Greek national funds |
| Εμφανίζεται στις συλλογές: | Ερευνητικές ομάδες |
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| Αρχείο | Περιγραφή | Σελίδες | Μέγεθος | Μορφότυπος | Έκδοση | Άδεια | |
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| applsci-09-03757.pdf | Article: The Role of Synergies of MWCNTs and Carbon Black in the Enhancement of the Electrical and Mechanical Response of Modified Epoxy Resins | 15 σελίδες | 5.51 MB | Adobe PDF | Δημοσιευμένη/του Εκδότη |  | Δείτε/ανοίξτε |