Three-Dimensional Monte Carlo Simulation of the Electrical Conductivity of Carbon Nanotube/Polymer Composites

2012 ◽  
Vol 5 (4) ◽  
pp. 045101 ◽  
Author(s):  
Dong Choon Lee ◽  
Gyemin Kwon ◽  
Heesuk Kim ◽  
Hyun-Jung Lee ◽  
Bong June Sung
Keyword(s):  
Electrical Conductivity ◽  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Carbon Nanotube ◽  
Polymer Composites ◽  
Three Dimensional

scholarly journals 3D Monte Carlo simulation modeling for the electrical conductivity of carbon nanotube-incorporated polymer nanocomposite using resistance network formation

2018 ◽  
Vol 2 (2) ◽  
Author(s):  
Nanzhu Zhao 1 ◽  
Yongha Kim 1 ◽  
Joseph H. Koo 1
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Conductivity ◽  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Carbon Nanotube ◽  
Network Formation ◽  
Polymer Nanocomposite ◽  
Electrical Percolation ◽  
Resistance Network ◽  
3D Monte Carlo

High electrical and thermal conductivity associated with high stiffness and strength offer tremendous opportunities to the development of a series of carbon nanotube incorporated composite materials for a variety of applications. In particular, a small amount of carbon fibers or carbon nanotubes in a non-conductive polymer will transform a composite into a conductive material, which reveals superb potential of their future application in electronic devices. The relation between the amount of carbon nanotubes in a polymer and the electrical conductivity of it can be studied experimentally as well as theoretically with various simulation models. A three-dimensional (3D) Monte Carlo simulation model using resistance network formation was developed to study the relation between the electrical conductivity of the polymer nanocomposite and the amount of carbon nanotubes dispersed in it. In this model, carbon nanotubes were modeled as curvy cylindrical nanotubes with various lengths and fixed tube diameter, all of which were randomly distributed in a non-conductive constrained volume, which represents polymer. The model can be used to find the volumetric electrical resistance of a constrained cubic structure by forming a comprehensive resistance network among all of the nanotubes in contact. As more and more nanotubes were added into the volume, the electrical conductivity of the volume increases exponentially. However, once the amount of carbon nanotubes reached about 0.1 % vt (volume percentage), electrical percolation was detected, which was consistent with the experimental results. This model can be used to estimate the electrical conductivity of the composite matrix as well as to acquire the electrical percolation threshold.

Carbon nanotube-filled polymer composites. Numerical simulation of electrical conductivity in three-dimensional entangled fibrous networks

2006 ◽  
Vol 54 (11) ◽  
pp. 2923-2931 ◽  
Author(s):  
Florent Dalmas ◽  
Rémy Dendievel ◽  
Laurent Chazeau ◽  
Jean-Yves Cavaillé ◽  
Catherine Gauthier
Keyword(s):  
Numerical Simulation ◽  
Electrical Conductivity ◽  
Carbon Nanotube ◽  
Polymer Composites ◽  
Three Dimensional ◽  
Filled Polymer

Off-Lattice Monte Carlo Simulation of the Thermal Conductivity of Single-Walled Carbon Nanotube-Polymer Composites With Inter-Carbon Nanotube Contact

2008 ◽  
Author(s):  
Hai M. Duong ◽  
Dimitrios V. Papavassiliou ◽  
Namiko Yamamoto ◽  
Brian L. Wardle
Keyword(s):  
Thermal Conductivity ◽  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Heat Conduction ◽  
Carbon Nanotube ◽  
Polymer Composites ◽  
Previous Model ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon ◽  
Lattice Monte Carlo

A computational model is developed to study the thermal conductivity of single-walled carbon nanotube (SWNT)–polymer composites. An off-lattice Monte Carlo simulation was used to model the effects of interfacial resistance at the SWNT-polymer interface and at the SWNT-SWNT contact on the heat flow for different orientations of SWNTs dispersed in the polymers. A primary focus is the non-isotropic heat conduction in aligned-SWNT polymeric composites that are of interest for various heat conduction applications such as microelectronic heat sinks, and also because this geometry constitutes a representative volume element (RVE) of CNT-reinforced polymer matrices in hybrid advanced composites under development. The simulation is an extension of a previous model for heat transfer in nanocomposites in that it now considers SWNT-SWNT contact. The simulation results of the developed model are compared with those of the previous model. The effects of SWNT orientation, SWNT-SWNT contact, weight fraction and thermal boundary resistance on the effective conductivity of composites are quantified. The present model is a useful tool for the prediction of the thermal conductivity within a wide range of volume fractions of the SWNTs, including the case when SWNTs are in contact with each other.

Exceptionally high thermal and electrical conductivity of three-dimensional graphene-foam-based polymer composites

RSC Advances ◽  
2016 ◽  
Vol 6 (27) ◽  
pp. 22364-22369 ◽  
Author(s):  
Zhiduo Liu ◽  
Dianyu Shen ◽  
Jinhong Yu ◽  
Wen Dai ◽  
Chaoyang Li ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Electrical Conductivity ◽  
Polymer Composites ◽  
Epoxy Matrix ◽  
Three Dimensional ◽  
Neat Epoxy ◽  
Graphene Foam

Three dimensional graphene foam incorporated into epoxy matrix greatly enhance its thermal conductivity (up to 1.52 W mK−1) at low graphene foam loading (5.0 wt%), over an eight-fold enhancement in comparison with that of neat epoxy.

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