Influence of filler alignment in the mechanical and electrical properties of carbon nanotubes/epoxy nanocomposites

In this work, we report the mechanical and electrical properties of carbon nanotubes/epoxy composites prepared with aligned and randomly oriented nanotubes as filler. The samples are disks of 30 mm in diameter and 3 mm in thickness. To obtain the carbon nanotubes alignment, an external electric fiel...

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Autores principales: Felisberto, M., Arias-Durán, A., Ramos, J.A., Mondragon, I., Candal, R., Goyanes, S., Rubiolo, G.H.
Formato: JOUR
Materias:
Carbon nanotubes
Electrical properties
Epoxy nanocomposites
Mechanical properties
Aligned nanotubes
Carbon-nanotube composites
Cure process
Dc conductivity
Electrical current
External electric field
Filler contents
Maximum values
Mechanical and electrical properties
Percolation thresholds
Randomly distributed
Resistance increase
Rockwell hardness
Alignment
Carbon
Curing
Fillers
Nanocomposites
Percolation (computer storage)
Percolation (fluids)
Percolation (solid state)
Electric properties
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_09214526_v407_n16_p3181_Felisberto
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_09214526_v407_n16_p3181_Felisberto2023-10-03T15:45:28Z Influence of filler alignment in the mechanical and electrical properties of carbon nanotubes/epoxy nanocomposites Felisberto, M. Arias-Durán, A. Ramos, J.A. Mondragon, I. Candal, R. Goyanes, S. Rubiolo, G.H. Carbon nanotubes Electrical properties Epoxy nanocomposites Mechanical properties Aligned nanotubes Carbon-nanotube composites Cure process Dc conductivity Electrical current Epoxy nanocomposites External electric field Filler contents Maximum values Mechanical and electrical properties Percolation thresholds Randomly distributed Resistance increase Rockwell hardness Alignment Carbon Carbon nanotubes Curing Fillers Mechanical properties Nanocomposites Percolation (computer storage) Percolation (fluids) Percolation (solid state) Electric properties In this work, we report the mechanical and electrical properties of carbon nanotubes/epoxy composites prepared with aligned and randomly oriented nanotubes as filler. The samples are disks of 30 mm in diameter and 3 mm in thickness. To obtain the carbon nanotubes alignment, an external electric field (250 VAC; 50 Hz) was applied through the thickness of the sample during all the cure process. The AC electrical current was measured, during the cure, as a strategy to determine the optimum time in which the alignment reaches the maximum value. DC conductivity measured after the cure shows a percolation threshold in the filler content one order of magnitude smaller for composites with aligned nanotubes than for composites with randomly oriented filler (from 0.06 to 0.5 wt%). In the percolation threshold, the achieved conductivity was 1.4×10 -5 Sm -1. In both cases, aligned and randomly distributed carbon nanotube composites, the wear resistance increases with the addition of the filler while the Rockwell hardness decreases independently of the nanotubes alignment. © 2011 Elsevier B.V. All rights reserved. Fil:Candal, R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Goyanes, S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_09214526_v407_n16_p3181_Felisberto
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Carbon nanotubes
Electrical properties
Epoxy nanocomposites
Mechanical properties
Aligned nanotubes
Carbon-nanotube composites
Cure process
Dc conductivity
Electrical current
Epoxy nanocomposites
External electric field
Filler contents
Maximum values
Mechanical and electrical properties
Percolation thresholds
Randomly distributed
Resistance increase
Rockwell hardness
Alignment
Carbon
Carbon nanotubes
Curing
Fillers
Mechanical properties
Nanocomposites
Percolation (computer storage)
Percolation (fluids)
Percolation (solid state)
Electric properties
spellingShingle Carbon nanotubes
Electrical properties
Epoxy nanocomposites
Mechanical properties
Aligned nanotubes
Carbon-nanotube composites
Cure process
Dc conductivity
Electrical current
Epoxy nanocomposites
External electric field
Filler contents
Maximum values
Mechanical and electrical properties
Percolation thresholds
Randomly distributed
Resistance increase
Rockwell hardness
Alignment
Carbon
Carbon nanotubes
Curing
Fillers
Mechanical properties
Nanocomposites
Percolation (computer storage)
Percolation (fluids)
Percolation (solid state)
Electric properties
Felisberto, M.
Arias-Durán, A.
Ramos, J.A.
Mondragon, I.
Candal, R.
Goyanes, S.
Rubiolo, G.H.
Influence of filler alignment in the mechanical and electrical properties of carbon nanotubes/epoxy nanocomposites
topic_facet Carbon nanotubes
Electrical properties
Epoxy nanocomposites
Mechanical properties
Aligned nanotubes
Carbon-nanotube composites
Cure process
Dc conductivity
Electrical current
Epoxy nanocomposites
External electric field
Filler contents
Maximum values
Mechanical and electrical properties
Percolation thresholds
Randomly distributed
Resistance increase
Rockwell hardness
Alignment
Carbon
Carbon nanotubes
Curing
Fillers
Mechanical properties
Nanocomposites
Percolation (computer storage)
Percolation (fluids)
Percolation (solid state)
Electric properties
description In this work, we report the mechanical and electrical properties of carbon nanotubes/epoxy composites prepared with aligned and randomly oriented nanotubes as filler. The samples are disks of 30 mm in diameter and 3 mm in thickness. To obtain the carbon nanotubes alignment, an external electric field (250 VAC; 50 Hz) was applied through the thickness of the sample during all the cure process. The AC electrical current was measured, during the cure, as a strategy to determine the optimum time in which the alignment reaches the maximum value. DC conductivity measured after the cure shows a percolation threshold in the filler content one order of magnitude smaller for composites with aligned nanotubes than for composites with randomly oriented filler (from 0.06 to 0.5 wt%). In the percolation threshold, the achieved conductivity was 1.4×10 -5 Sm -1. In both cases, aligned and randomly distributed carbon nanotube composites, the wear resistance increases with the addition of the filler while the Rockwell hardness decreases independently of the nanotubes alignment. © 2011 Elsevier B.V. All rights reserved.
format JOUR
author Felisberto, M.
Arias-Durán, A.
Ramos, J.A.
Mondragon, I.
Candal, R.
Goyanes, S.
Rubiolo, G.H.
author_facet Felisberto, M.
Arias-Durán, A.
Ramos, J.A.
Mondragon, I.
Candal, R.
Goyanes, S.
Rubiolo, G.H.
author_sort Felisberto, M.
title Influence of filler alignment in the mechanical and electrical properties of carbon nanotubes/epoxy nanocomposites
title_short Influence of filler alignment in the mechanical and electrical properties of carbon nanotubes/epoxy nanocomposites
title_full Influence of filler alignment in the mechanical and electrical properties of carbon nanotubes/epoxy nanocomposites
title_fullStr Influence of filler alignment in the mechanical and electrical properties of carbon nanotubes/epoxy nanocomposites
title_full_unstemmed Influence of filler alignment in the mechanical and electrical properties of carbon nanotubes/epoxy nanocomposites
title_sort influence of filler alignment in the mechanical and electrical properties of carbon nanotubes/epoxy nanocomposites
url http://hdl.handle.net/20.500.12110/paper_09214526_v407_n16_p3181_Felisberto
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