Combined Electrical and Thermal Percolation Threshold in Single/Multi Walled Carbon Nanotube Polymer-Matrix Composites

Electrical and thermal conductivity of carbon nanotube reinforced polymer composites were investigated as a function of carbon nanotube concentration. Both cases of single-walled carbon nanotubes (SWNT) and multi-walled carbon nanotubes (MWNT) were studied. The percolation threshold in composite materials is defined as the composition at which the conducting phase forms a continuous three-dimensional network through the material. A new model is introduced which combines both electrical and thermal percolation thresholds. Applying this model leads to optimum selection of nanotube concentration regarding electrical/thermal applications. The model is verified for some circumstances

کلیدواژه ها:

carbon nanotubes ، polymer-matrix composites (PMCs) ، electrical conductivity ، thermalconductivity ، percolation threshold