Positioning and aligning CNTs by external magnetic field to assist localised epoxy cure
| Autor: | Giampaolo Ariu, Ian Hamerton, Dmitry Ivanov |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
QC1-999 high conductivity connections General Physics and Astronomy Multi-walled carbon nanotubes 02 engineering and technology Bristol Composites Institute ACCIS 010402 general chemistry 01 natural sciences Condensed Matter::Materials Science Electroless plating Composite material magnetic and thermal characterisation 81.07.de electroless plating 68.37.lp Physics rheological analysis multi-walled carbon nanotubes Epoxy 021001 nanoscience & nanotechnology 0104 chemical sciences Magnetic field 81.07.-b 82.35.np 61.46.fg visual_art visual_art.visual_art_medium Composites UTC 0210 nano-technology |
| Zdroj: | Ariu, G, Hamerton, I & Ivanov, D 2017, ' Positioning and aligning CNTs by external magnetic field to assist localised epoxy cure ', Open Physics, vol. 14, no. 1, pp. 508-516 . https://doi.org/10.1515/phys-2016-0057 Open Physics, Vol 14, Iss 1, Pp 508-516 (2016) |
| ISSN: | 2391-5471 |
| DOI: | 10.1515/phys-2016-0057 |
| Popis: | This work focuses on the generation of conductive networks through the localised alignment of nano fillers, such as multi-walled carbon nanotubes (MWCNTs). The feasibility of alignment and positioning of functionalised MWCNTs by external DC magnetic fields was investigated. The aim of this manipulation is to enhance resin curing through AC induction heating due to hysteresis losses from the nanotubes. Experimental analyses focused on in-depth assessment of the nanotube functionalisation, processing and characterisation of magnetic, rheological and cure kinetics properties of the MWCNT solution. The study has shown that an external magnetic field has great potential for positioning and alignment of CNTs. The study demonstrated potential for creating well-ordered architectures with an unprecedented level of control of network geometry. Magnetic characterisation indicated cobalt-plated nanotubes to be the most suitable candidate for magnetic alignment due to their high magnetic sensitivity. Epoxy/metal-plated CNT nanocomposite systems were validated by thermal analysis as induction heating mediums. The curing process could therefore be optimised by the use of dielectric resins. This study offers a first step towards the proof of concept of this technique as a novel repair technology. |
| Databáze: | OpenAIRE |
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