Carbon nanotubes greases

H. Hong, D. Thomas, A. Waynick, Y. Wenhua, P. Smith, W. Roy, Carbon nanotube grease with enhanced thermal and electrical conductivities, J. Nanopart. Res., 12, 529-535 (2010). 

M. Horton, H. Hong, and P. Smith, A rheological investigation of carbon nanotube grease, in preparation. 

More recent results on CNTs were much more promising [227,228]. Two types of CNT thin films were tested functionalized P3-single walled nanotubes (SWNTs) and raw (non-functionalized) SWNTs. Both films provided excellent actuation characteristics (on par with carbon grease), had a negligible influence on mechanical properties of the film, and remained stable over longer periods of time. In addition, the carbon nanotube films could be made thin enough to remain optically transparent for use as transparent compliant electrodes [229]. 

Figure 19.7 shows a carbon nanombe composite (grease) made from the polymer DURASYN 166 oil [29,30]. The nanocomposite (grease) is black, opaque, and homogeneous. The compositions of the four nanotube greases that are used in this chapter are listed in Table 19.4. Two of the samples were made by dispersing approximately 10-12 wt% SWNTs in the oil, and the other two samples are made by dispersing approximately... 

Figure 19.7 Picture of the nanocomposite (grease) made from the nanofiller (carbon nanotubes) and polymer (DURASYIsl 166 oil). (Reproduced with kind permission from NLGI. Copyright (2010) NLGI)...

Table 19.4 Composition of selected four types of carbon nanotube composites (greases)...

Even after being exposed to a magnetic field (1.46 kG) for more than 72 hours, there was no apparent TC change in the sample. The combined results for all of the thermal conductivity measurements of the grease containing the Ni-coated carbon nanotubes can be found in Table 19.11. 

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