Theoretical and computational studies of carbon nanotube composites and suspensions: Electrical and thermal conductivity

2005 ◽  
Vol 71 (10) ◽  
Author(s):  
M. Foygel ◽  
R. D. Morris ◽  
D. Anez ◽  
S. French ◽  
V. L. Sobolev
Keyword(s):  
Thermal Conductivity ◽  
Carbon Nanotube ◽  
Computational Studies ◽  
Nanotube Composites ◽  
Carbon Nanotube Composites

Thermal Conductivity of Polymer/Carbon Nanotube Composites

2012 ◽  
Vol 714 ◽  
pp. 99-113 ◽  
Author(s):  
Manel Haddadi ◽  
Boudjemaa Agoudjil ◽  
Abderrahim Boudenne
Keyword(s):  
Thermal Conductivity ◽  
Carbon Nanotube ◽  
Processing Method ◽  
Nanotube Composites ◽  
Important Field ◽  
Carbon Nanotube Composites ◽  
Equivalent Property ◽  
New Generation ◽  
The Relationship

As one of the most important field of current nanoscience, the polymer nanocomposites is a promising and efficient way for new generation materials with high performances and multifunctionalities. The incorporating of nanofillers in a polymer matrix may improve mechanical, thermal, electrical or dielectric properties of the composites. The current paper focuses on the thermal conductivity of polymer/carbon nanotube composites. These last, are considered to be ideal candidates for the development of nanocomposite materials. Clarifying the role of the factors, influencing the properties of the composites, enable us to choose the suitable processing method for obtaining the composites and to improve the different properties of these systems. This article reviews the dependence of thermal conductivity of carbon nanotubes on the tube size and the effect of interface on the equivalent property. The relationship between the thermal conductivity and the nanostructure of composites are discussed.

The effective thermal conductivity of carbon nanotube composites

PAMM ◽  
2017 ◽  
Vol 17 (1) ◽  
pp. 613-614
Author(s):  
Manish Nagaraj ◽  
Jithender J. Timothy ◽  
Günther Meschke
Keyword(s):  
Thermal Conductivity ◽  
Carbon Nanotube ◽  
Effective Thermal Conductivity ◽  
Nanotube Composites ◽  
Carbon Nanotube Composites

scholarly journals Experimental Investigation of the Melt Shear Viscosity, Specific Volume and Thermal Conductivity of Low-Density Polyethylene/Multi-Walled Carbon Nanotube Composites Using Capillary Flow

Polymers ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1230 ◽  
Author(s):  
Nicoleta-Violeta Stanciu ◽  
Felicia Stan ◽  
Catalin Fetecau
Keyword(s):  
Thermal Conductivity ◽  
Carbon Nanotube ◽  
Shear Viscosity ◽  
Specific Volume ◽  
Melt Processing ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Processing Conditions ◽  
Nanotube Composites ◽  
Carbon Nanotube Composites

Understanding the flow behavior of polymer/carbon nanotube composites prior to melt processing is important for optimizing the processing conditions and final product properties. In this study, the melt shear viscosity, specific volume and thermal conductivity of low-density polyethylene (LDPE) filled with multi-walled carbon nanotubes (MWCNTs) were investigated for representative processing conditions using capillary rheometry. The experimental results show a significant increase in the melt shear viscosity of the LDPE/MWCNT composite with nanotube loadings higher than 1 wt.%. Upon increasing shear rates, the composites flow like a power-law fluid, with a shear-thinning index less than 0.4. The specific volume decreases with increasing pressure and nanotube loading, while the pVT transition temperature increases linearly with increasing pressure. The thermal conductivity of the LDPE/MWCNT composite is nearly independent of nanotube loading up to the thermal percolation threshold of 1 wt.% and increases linearly with further increases in nanotube loading, reaching 0.35 W/m·K at 5 wt.%. The Carreau–Winter and Cross viscosity models and Tait equation, respectively, are able to predict the shear viscosity and specific volume with a high level of accuracy. These results can be used not only to optimize processing conditions through simulation but also to establish structure–property relationships for the LDPE/MWCNT composites.

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