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Strengthening mechanism of electrothermal actuation in the epoxy composite with an embedded carbon nanotube nanopaper
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SYSNO ASEP 0543320 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Strengthening mechanism of electrothermal actuation in the epoxy composite with an embedded carbon nanotube nanopaper Author(s) Slobodian, P. (CZ)
Říha, Pavel (UH-J) SAI, ORCID, RID
Olejník, R. (CZ)
Matyáš, J. (CZ)Article number 1529 Source Title Nanomaterials. - : MDPI
Roč. 11, č. 6 (2021)Number of pages 12 s. Publication form Online - E Language eng - English Country CH - Switzerland Keywords carbon nanotube nanopaper ; epoxy composite ; Joule heating ; glass transition ; actuation force Subject RIV JJ - Other Materials OECD category Nano-processes (applications on nano-scale) Method of publishing Open access Institutional support UH-J - RVO:67985874 UT WOS 000666636300001 EID SCOPUS 85107421912 DOI 10.3390/nano11061529 Annotation We assessed an effect of an embedded electro-conductive multiwalled carbon nanotubenanopaper in an epoxy matrix on the release of the frozen actuation force and the actuation torque inthe carbon nanotube nanopaper/epoxy composite after heating above its glass transition temperature.The presence of the nanopaper augmented the recovery of the actuation stress by the factor of twoin comparison with the pure epoxy strips. We proposed a procedure that allowed us to assessthis composite strengthening mechanism. The strengthening of the composite was attributed tothe interlocking of the carbon nanotubes with the epoxy. When reheated, the composite samples,which contained stretched mutually intertwined nanotubes and epoxy segments, released a greateractuation stress then the epoxy samples, which comprised of less elastic networks of crosslinkedsegments of pure epoxy. Workplace Institute of Hydrodynamics Contact Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003 Year of Publishing 2022 Electronic address https://www.mdpi.com/2079-4991/11/6/1529
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