Structural characterization and electrical properties of carbon nanotubes/epoxy polymer composites

2016 ◽  
Vol 134 (8) ◽  
Author(s):  
Sofia Boukheir ◽  
Adél Len ◽  
János Füzi ◽  
Viktor Kenderesi ◽  
Mohammed Essaid Achour ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Properties ◽  
Polymer Composites ◽  
Structural Characterization ◽  
Epoxy Polymer

Influence of Structural Defects on the Electrical Properties of Carbon Nanotubes and Their Polymer Composites

2016 ◽  
Vol 18 (11) ◽  
pp. 1897-1905 ◽  
Author(s):  
G. Domínguez-Rodríguez ◽  
A. Tapia ◽  
G. D. Seidel ◽  
F. Avilés
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Properties ◽  
Polymer Composites ◽  
Structural Defects

Effective amino-functionalization of carbon nanotubes for reinforcing epoxy polymer composites

2006 ◽  
Vol 17 (6) ◽  
pp. 1551-1557 ◽  
Author(s):  
Shiren Wang ◽  
Zhiyong Liang ◽  
Tina Liu ◽  
Ben Wang ◽  
Chuck Zhang
Keyword(s):  
Carbon Nanotubes ◽  
Polymer Composites ◽  
Epoxy Polymer ◽  
Amino Functionalization ◽  
Functionalization Of Carbon Nanotubes

Fractal structure and temperature-dependent electrical study of carbon nanotubes/epoxy polymer composites

2017 ◽  
Vol 50 (4) ◽  
pp. 183-188 ◽  
Author(s):  
S. Boukheir ◽  
A. Len ◽  
J. Füzi ◽  
V. Kenderesi ◽  
M. E. Achour ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Polymer Composites ◽  
Fractal Structure ◽  
Epoxy Polymer ◽  
Temperature Dependent ◽  
Electrical Study

Reduced percolation threshold of multi-walled carbon nanotubes/polymer composites by filling aligned ferromagnetic particles

2019 ◽  
Vol 31 (2) ◽  
pp. 187-197
Author(s):  
Shuai Dong ◽  
Xuan Wu ◽  
Erhua Wang ◽  
Xiaojie Wang
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Resistivity ◽  
Electrical Properties ◽  
Percolation Threshold ◽  
Polymer Composites ◽  
Conductive Polymer ◽  
Iron Particles ◽  
Conductive Polymer Composites ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

Conductive polymer composites, consisting of multi-walled carbon nanotubes and a small amount of carbonyl iron particles, are fabricated under an ordinary magnetic field, to form anisotropic microstructures. The alignment of carbonyl iron particles will change the structure of a multi-walled carbon nanotube network and consequently the electrical properties of conductive polymer composites. In this research, we focus on the effect of the anisotropic microstructures on the electrical properties of the composites, especially on the percolation threshold and electrical resistivity. Monte Carlo simulations for three-dimensional stick percolation systems are performed to predict the percolation threshold of the anisotropic conductive polymer composites in terms of orientation distribution of multi-walled carbon nanotubes. In addition, an eight-chain model is proposed to investigate the influence of the anisotropic distribution of multi-walled carbon nanotubes on the electrical resistivity of the composites. It is predicted that the percolation threshold could be reduced from 0.70 vol% for the isotropic composites to 0.49 vol% for the anisotropic composites. Meanwhile, the electrical resistivity of the anisotropic composites is about 10%–20% of that of the isotropic composites when the volume fraction of multi-walled carbon nanotubes is higher than the percolation threshold. The simulation results are compared with the experimental study results that show a very similar behavior although there are some deviations in the values.

scholarly journals Fractal Approach to Alternating Current Impedance Spectroscopy Studies of Carbon Nanotubes/Epoxy Polymer Composites

2017 ◽  
Vol 47 (3) ◽  
pp. 126-130 ◽  
Author(s):  
Rajae Belhimria ◽  
Sofa Boukheir ◽  
Zineb Samir ◽  
Adel Len ◽  
Mohammed Essaid Achour ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Impedance Spectroscopy ◽  
Polymer Composites ◽  
Epoxy Polymer ◽  
Alternating Current ◽  
Fractal Approach ◽  
Spectroscopy Studies

Impedance Spectroscopy and Dielectric Properties of Carbon Nanotube-Reinforced Epoxy Polymer Composites

2020 ◽  
Vol 13 (2) ◽  
pp. 113-121
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Impedance Spectroscopy ◽  
Grain Boundary ◽  
Polymer Composites ◽  
Equivalent Circuit ◽  
Epoxy Polymer ◽  
Equivalent Circuit Model ◽  
Circuit Model ◽  
Filler Concentration

Abstract: The aim of this work is to investigate the electric properties of carbon nanotube-reinforced epoxy polymer composites, using impedance spectroscopy, in the frequency range from 1 to 10 and over the temperature range from 25 to 105 . The dielectric response was analyzed using the complex permittivity and the electrical modulus formalisms, depending on temperature and filler concentration in the polymer matrix. Furthermore, an equivalent circuit model is proposed to describe the impedance response of carbon nanotubes/epoxy composites. The impedance studies disclosed the appearance of grain and grain-boundary effects, as confirmed by the Nyquist plot. Keywords: Carbon nanotubes, Composites, Impedance spectroscopy, Equivalent circuit model, Grain effect, Grain-boundary effect.

Electrical Properties of Composites Based on Low-Pressure Polyethylene and Carbon-Containing Fillers

2021 ◽  
Vol 899 ◽  
pp. 720-725
Author(s):  
Muslim A. Mikitaev ◽  
V.A. Borisov ◽  
Ismel V. Musov ◽  
Azamat L. Slonov ◽  
Diana M. Khakulova
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Properties ◽  
Polymer Composites ◽  
Electrical Resistance ◽  
Low Pressure ◽  
Positive Temperature Coefficient ◽  
Positive Temperature ◽  
Electrically Conductive ◽  
Conductive Properties ◽  
Properties Of Composites

We have obtained polymer composites based on low-pressure polyethylene and carbon-containing fillers: carbon black, carbon nanotubes. The electrical properties of the obtained polymer composites have been investigated. Obtained polymer composites have electrically conductive properties. This article shows that the electrical properties significantly depend on the concentration, type of carbon-containing filler, as well as on temperature and voltage. It was found that containment of a certain amount of carbon-containing fillers leads to a formation of conductive paths composites, leading to the manifestation of a positive temperature coefficient in electrical resistance by the material.

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