Interface effect on thermal conductivity of carbon nanotube composites
Влияние интерфейса на теплопроводность композитов с углеродными нанотрубками
2004-10-18
SCID: 54.1/5vtczepw
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carbon nanotube compositeseffective medium approachinterface thermal resistancethermal conductivity enhancement
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Abstract (AI)
A simple formula for the thermal conductivity enhancement in carbon nanotube composites is presented by incorporating the interface thermal resistance with an effective medium approach. This model well describes the thermal conductivity enhancement observed recently in nanotube suspensions. In particular, this simple formula predicts that a large interface thermal resistance across the nanotube-matrix interface causes a significant degradation in the thermal conductivity enhancement, even for the case with ultrahigh intrinsic thermal conductivity and aspect ratio of the carbon nanotubes embedded.
Key Findings
1
A simple formula incorporating interface thermal resistance into an effective medium approach predicts thermal conductivity enhancement in carbon nanotube composites.
2
High nanotube aspect ratio does not prevent degradation of composite thermal conductivity when interface resistance is large.
3
Large interface thermal resistance at the nanotube–matrix interface significantly degrades thermal conductivity enhancement, even with ultrahigh intrinsic nanotube conductivity.
4
The proposed model accurately describes recently observed thermal conductivity enhancements in nanotube suspensions.
Research Object
Carbon nanotube composites (nanotubes embedded in a matrix)
Research Subject
Effect of interface thermal resistance at the nanotube–matrix interface on the thermal conductivity enhancement of the composites
Publication Details
Publication Date
2004-10-18
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