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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Schulte, Karl
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2019Fracture, failure and compression behaviour of a 3D interconnected carbon aerogel (Aerographite) epoxy compositecitations
- 2018Fundamentals of the temperature-dependent electrical conductivity of a 3D carbon foam—Aerographite
- 2018Thermomechanical characteristics of ODF-silica Nafion® nanocomposite for PEMFCs application
- 20173D carbon networks and their polymer compositescitations
- 2017Compression fracture of CFRP laminates containing stress intensifications
- 2017Growth model of a carbon based 3D structure (Aerographite) and electrical/mechanical properties of composites
- 2016Fracture, failure and compression behaviour of a 3D interconnected carbon aerogel (Aerographite) epoxy compositecitations
- 2016Electro-mechanical piezoresistive properties of three dimensionally interconnected carbon aerogel (Aerographite)-epoxy compositescitations
- 2015Three-dimensional Aerographite-GaN hybrid networkscitations
- 2015Three-dimensional Aerographite-GaN hybrid networks: single step fabrication of porous and mechanically flexible materials for multifunctional applications
- 2013Improvement of carbon nanotube dispersion in thermoplastic composites using a three roll mill at elevated temperaturescitations
- 2011Characterization of the state of dispersion of carbon nanotubes in polymer nanocomposites
- 2009CFRP-recycling following a pyrolysis route : process optimization and potentials
- 2008Direction sensitive bending sensors based on multi-wall carbon nanotube/epoxy nanocompositescitations
- 2008Catalytically active CNT-polymer-membrane assembliescitations
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article
Electro-mechanical piezoresistive properties of three dimensionally interconnected carbon aerogel (Aerographite)-epoxy composites
Abstract
<p>Aerographite (AG) is a carbon aerogel consisting of three-dimensionally (3D) interconnected graphitic microtubes. This study characterizes the electrical and mechanical properties of Aerographite/epoxy composites under tensile load. Aerographite can be used as a highly tailorable filler in polymer nanocomposites (PNCs) where the carbon filler and the matrix form an interpenetrating structure, contrary to particle filled systems. Aerographite networks with densities ranging from 3.0 to 13.9 mg/cm<sup>3</sup> were produced in a chemical vapour deposition (CVD) process. An infiltration with epoxy leads to Aerographite/epoxy composites with filler contents in the range of 0.26–1.24 wt%. Their electrical conductivity is in the range of 2–13.6 S/m, thus, orders of magnitude higher compared to CNT-based PNCs at comparable filler contents. Although a large amount of direct interconnections of the graphitic tubes is given, interestingly the Aerographite/epoxy composites show a piezoresistive behaviour comparable to PNCs filled with carbon nanotubes (CNT) or graphene. Unexpected shifts between external mechanical strain and electrical signal have been observed in incremental piezoresistive experiments. Young's moduli and tensile strengths of the PNCs are not affected by embedding Aerographite networks. Fractographic observations identify graphitic wall slippage as the dominating failure mechanism. Both, piezoresistive characterization and fractography studies have been correlated and a model for the observed piezoresistive response is derived.</p>