Title data
Bakis, Gökhan ; Wendel, Jan-Felix ; Zeiler, Rico ; Aksit, Alper ; Häublein, Markus ; Demleitner, Martin ; Benra, Jan ; Forero, Stefan ; Schütz, Walter ; Altstädt, Volker:
Mechanical Properties of the Carbon Nanotube Modified Epoxy–Carbon Fiber Unidirectional Prepreg Laminates.
In: Polymers.
Vol. 13
(2021)
Issue 5
.
- No. 770.
ISSN 2073-4360
DOI: https://doi.org/10.3390/polym13050770
Project information
Project title: |
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Project financing: |
Bundesministerium für Wirtschaft und Energie |
Abstract in another language
The effect of plasma treatment of the multi-walled carbon nanotube (MWCNT) surface on the fracture toughness of an aerospace grade epoxy resin and its unidirectional (UD) carbon fiber prepreg laminates has attracted scientific interest. A prepreg route eliminates the possible risk of carbon nanotube filtration by unidirectional carbon fibers. X-ray photoelectron spectroscopy results suggested that oxygen atom concentration at the nanotube surface was increased from 0.9 to 3.7 after plasma modification of the carbon nanotubes. A low number (up to 0.5 wt.) of MWCNTs was added to epoxy resin and their carbon fiber prepreg laminates. Transmission electron micrographs revealed that the plasma treatment resulted in a better dispersion and distribution of MWCNTs in the epoxy resin. Plasma-treated MWCNTs resulted in a more pronounced resistance to the crack propagation of epoxy resin. During the production of the reference and nanotube-modified prepregs, a comparable prepreg quality was achieved. Neat nanotubes agglomerated strongly in the resin-rich regions of laminates lowering the interlaminar fracture toughness under mode I and mode II loading. However, plasma-treated nanotubes were found mostly as single particles in the resin-rich regions of laminates promoting higher energy dissipation during crack propagation via a CNT pull-out mechanism.
Further data
Item Type: | Article in a journal |
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Refereed: | Yes |
Keywords: | carbon nanotubes; epoxy resins; carbon fibers; nanocomposites; prepregs; fiber-reinforced composites; toughness; mechanical properties; aerospace |
Institutions of the University: | Faculties > Faculty of Engineering Science > Former Professors > Chair Polymer Materials - Univ.-Prof. Dr.-Ing. Volker Altstädt Faculties Faculties > Faculty of Engineering Science Faculties > Faculty of Engineering Science > Former Professors |
Result of work at the UBT: | Yes |
DDC Subjects: | 600 Technology, medicine, applied sciences > 620 Engineering |
Date Deposited: | 10 Nov 2021 10:56 |
Last Modified: | 11 Nov 2021 07:05 |
URI: | https://eref.uni-bayreuth.de/id/eprint/67723 |