Combined electrical and rheological properties of shear induced multiwall carbon nanotube agglomerates in epoxy suspensions |
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| Authors: | SC Schulz G Faiella ST Buschhorn LASA Prado M Giordano K Schulte W Bauhofer |
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| Institution: | aInstitute of Optical and Electronic Materials, Hamburg University of Technology, Eißendorfer Str. 38, D-21073 Hamburg, Germany;bInstitute for Composite and Biomedical Materials, National Research Council, P.le Fermi 1, 80055 Portici (NA), Italy;cInstitute of Polymer Composites, Hamburg University of Technology, Denickestr. 15, D-21073 Hamburg, Germany |
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| Abstract: | In this work the rheological and electrical properties of semi-dilute carbon nanotube (CNT)–epoxy suspensions have been discussed. The suspensions are produced using two types of industrially available CNTs (Nanocyl 3150 and 7000) and using two different dispersion techniques, namely 3-roll milling and sonication. In-situ optical microscopic analysis and electrical conductivity measurements have been conducted. It is shown that despite using CNTs with similar aspect ratios, the dispersability of the raw material and the time stability of the suspensions are quite different. Additionally, viscosity measurements are used to evaluate the initial dispersion quality and time stability. |
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| Keywords: | Electrical conductivity Carbon nanotubes Agglomeration Rheological properties Nanofillers Dispersion |
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