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Updated: Jan 29, 2026

Transport of Surface-modified Carbon Nanotubes through a Soil Column
Published on: April 2, 2015
A Rheological Investigation of Carbon Nanotube Grease
Haiping Hong1, Hammad Younes2, Greg Christensen1
1Department of Material and Metallurgical Engineering, South Dakota School of Mines and Technology, Rapid City, SD 57701, United States.
Abstract:
The use of carbon nanotubes (CNTs) as a thickening agent in polyalphaolefin oils to create CNT-grease has significant merit. Given the abnormally high thermal conductivities of CNTs, it is conceivable that a CNT-grease would exhibit excellent thermal conductivity. The rheological response of CNT-greases is important for two reasons: to determine if the grease will have sufficient lubricating properties and to provide critical information on the structure and particle-particle interactions of CNT suspensions. The viscoelastic response and evidence of creep recovery support the theory of the stable 3 Dimensional network (3D) formation in the CNT-grease. The elastic response indicates that significant energy is needed to dismember the network structure and initiate viscous flow. The macroscopic rheological investigation provides additional information regarding the structure of CNT-grease and particle-particle interactions at high SWNT concentrations, ~10.0 wt. The knowledge gained concerning the structure of CNT suspensions will allow its manipulation to achieve better thermal properties.
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