Thermal Conduction in Aligned Carbon Nanotube–Polymer Nanocomposites with High Packing Density
TLDR
The impact of CNT density on thermal conduction considering boundary resistances, increased defect concentrations, and the possibility of suppressed phonon modes in the CNTs is discussed.Abstract:
Nanostructured composites containing aligned carbon nanotubes (CNTs) are very promising as interface materials for electronic systems and thermoelectric power generators. We report the first data for the thermal conductivity of densified, aligned multiwall CNT nanocomposite films for a range of CNT volume fractions. A 1 vol % CNT composite more than doubles the thermal conductivity of the base polymer. Denser arrays (17 vol % CNTs) enhance the thermal conductivity by as much as a factor of 18 and there is a nonlinear trend with CNT volume fraction. This article discusses the impact of CNT density on thermal conduction considering boundary resistances, increased defect concentrations, and the possibility of suppressed phonon modes in the CNTs.read more
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References
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Interfacial heat flow in carbon nanotube suspensions
Scott T. Huxtable,David G. Cahill,Sergei Shenogin,Liping Xue,Rahmi Ozisik,Paul W. Barone,Monica L. Usrey,Michael S. Strano,Giles P. Siddons,Moonsub Shim,Pawel Keblinski +10 more
TL;DR: These findings indicate that heat transport in a nanotube composite material will be limited by the exceptionally small interface thermal conductance and that the thermal conductivity of the composite will be much lower than the value estimated from the intrinsic thermal conductivities of the nanotubes and their volume fraction.
Journal ArticleDOI
Evaluation and identification of electrical and thermal conduction mechanisms in carbon nanotube/epoxy composites
Florian H. Gojny,Malte H.G. Wichmann,Bodo Fiedler,Ian A. Kinloch,Wolfgang Bauhofer,Alan H. Windle,Karl Schulte +6 more
TL;DR: In this paper, the electrical and thermal conductivity of nanoparticulate filled epoxy resins is evaluated with respect to the influence of the type of carbon nanotubes (SWCNT, DWCNT and MWCNT).
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