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Authors
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Zhang, J. ; Zhuang, R.-C. ; Liu, J. ; Mäder, E. ; Heinrich, G. ; Gao, S.-L.
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Title
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Functional interphases with multi-walled carbon nanotubes in glass fibre/epoxy composites
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Date
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03.05.2010
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Number
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22829
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Abstract
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The interphase between reinforcing fibre and matrix is a controlling element in composite performance. We deposited multi-walled carbon nanotubes (MWCNTs) onto electrically insulating glass fibre surfaces leading to the formation of semiconductive MWCNTglass fibres and in turn multifunctional fibre/polymer interphases. The deposition process of MWCNTs onto glass fibre surfaces involved both electrophoretic deposition (EPD) and conventional dip coating methods. The EPD coating method produces a more homogeneous and continuous nanotube distribution on the glass fibre surface compared with the dip coating. According to fragmentation test results, the interphase with a small number of heterogeneous MWCNTs in the EPD fibre/epoxy composites, mimicking a biological bone structure, can remarkably improve the interfacial shear strength. We found that the semiconductive interphase results in a high sensitivity of the electrical resistance to the tensile strain of single glass fibre model composites. This material provides a possible in situ mechanical load sensor and early warning of fibre composite damage.
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Publisher
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Carbon
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Wikidata
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Citation
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Carbon 48 (2010) 2273-2281
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DOI
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https://doi.org/10.1016/j.carbon.2010.03.001
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