Thermal Conduction in Aligned Carbon Nanotube-Polymer Nanocomposites with High Packing Density

被引：431

作者：

Marconnett, Amy M. ^{[1
]}

Yamamoto, Namiko ^{[2
]}

Panzer, Matthew A. ^{[1
]}

Wardle, Brian L. ^{[2
]}

Goodson, Kenneth E. ^{[1
]}

机构：

[1] Stanford Univ, Dept Mech Engn, Stanford, CA 94305 USA

[2] MIT, Dept Aeronaut & Astronaut, Cambridge, MA 02139 USA

来源：

ACS NANO | 2011年 / 5卷 / 06期

基金：

美国国家科学基金会;

关键词：

carbon nanotubes; nanocomposites; thermal conductivity; thermal interface materials; COMPOSITES; BEHAVIOR; FLOW;

D O I：

10.1021/nn200847u

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：4818 / 4825

页数：8

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