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The hierarchical structure and properties of multifunctional carbon nanotube fibre composites

DSpace at IIT Bombay

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Title The hierarchical structure and properties of multifunctional carbon nanotube fibre composites
 
Creator VILATELA, JJ
KHARE, R
WINDLE, AH
 
Subject CHEMICAL-VAPOR-DEPOSITION
THERMAL-CONDUCTIVITY
POLYMER COMPOSITES
TRANSPORT
STRENGTH
SHEETS
EPOXY
 
Description The axial mechanical, electrical and thermal properties of carbon nanotubes (CNTs) can be exploited macroscopically by assembling them parallel to each other into a fibre during their synthesis by chemical vapour deposition. Multifunctional composites with high volume fraction of CNT fibres are then made by direct polymer infiltration of an array of aligned fibres. The fibres have a very high surface area, causing the polymer to infiltrate them and resulting in a hierarchical composite structure. The electrical and thermal conductivities of CNT/epoxy composites are shown to be superior to those of equivalent specimens with T300 carbon fibre (CF) which is widely used in industry. From measurements of longitudinal coefficient of thermal expansion (CTE) of the composites we show that the CTE of CNT fibres is approximately -1.6 x 10(-6) K-1, similar to in-plane graphite. The combination of electrical, thermal and mechanical properties of CNT fibre composites demonstrates their potential for multifunctionality. (C) 2011 Published by Elsevier Ltd.
 
Publisher PERGAMON-ELSEVIER SCIENCE LTD
 
Date 2014-10-14T12:57:57Z
2014-10-14T12:57:57Z
2012
 
Type Article
 
Identifier CARBON, 50(3)1227-1234
http://dx.doi.org/10.1016/j.carbon.2011.10.040
http://dspace.library.iitb.ac.in/jspui/handle/100/14462
 
Language en