Thermal and electrical conductivity of carbon nanotube arrays/epoxy

被引：0

作者：

Zhou E.-Z. ^{[1
]}

Ying J. ^{[1
]}

机构：

[1] Department of Mechanical Engineering, Zhejiang University, Hangzhou

来源：

Zhejiang Daxue Xuebao (Gongxue Ban)/Journal of Zhejiang University (Engineering Science) | 2016年 / 50卷 / 09期

关键词：

Carbon nanotube; Carbon nanotube array (CNTA); Composites; Electrical conductivity; Epoxy; Thermal conductivity; Thermal interface material;

D O I：

10.3785/j.issn.1008-973X.2016.09.05

中图分类号：

学科分类号：

摘要：

Carbon nanotube array (CNTA)/Epoxy composites were prepared by blending epoxy resin solution with CNTA. The carbon nanotube arrays were dissolved and dispersed in Epoxy solution, and the composites were cured at 60 oC for 4 h. After curing, the Epoxy film was infiltrated in the CNTA film. The carbon nanotubes in the CNTA film can still be kept in a neat arrangement. On this account, the thermal conductivity of the composites along the axis was improved. The direction of the axis was the axial direction of the carbon nanotubes. It is found that the thermal conductivity of the CNTA/Epoxy composites increase to 2.24 W/(m·K), about 10 times that of neat epoxy resin. The electrical conductivity of composite materials is still maintained at a relatively low value of 10-8 S/cm. To sum up, compared to addition of random dispersed CNTs or other nanofillers, the CNTA can enhance the thermal conductivity of the composites markedly. Meanwhile, the electrical conductivity remains in a relative low value, which is beneficial for application in electronic packaging industry. © 2016, Zhejiang University Press. All right reserved.

引用

页码：1671 / 1676

页数：5

共 28 条

[1]

Savas B., Young K.K., David T., Unusually high thermal conductivity of carbon nanotubes, Physical Review Letters, 5, 15, pp. 4613-4616, (2000)

[2]

Kim P., Shi L., Majumdar A., Et al., Thermal transport measurements of individual multi- walled nanotubes, Physical Review Letters, 11, 19, pp. 1-4, (2001)

[3]

Fujii M., Zhang X., Xie H., Et al., Measuring the thermal conductivity of a single carbon nanotube, Physical Review Letters, 8, 5, pp. 1-4, (2005)

[4]

Gojny F.H., Wichmann M.H.G., Fiedler B., Et al., Evaluation and identification of electrical and thermal conduction mechanisms in carbon nanotube/epoxy composites, Polymer, 2, 2, pp. 2036-2045, (2006)

[5]

Yang K., Gu M., Guo Y.P., Et al., Effects of carbon nanotube functionalization on the mechanical and thermal properties of epoxy composites, Carbon, 3, 6, pp. 1723-1737, (2009)

[6]

Alem■n B., Reguero V., Mas B., Et al., Strong carbon nanotube fibers by drawing inspiration from polymer fiber spinning, Acs Nano, 7, 15, pp. 7392-7398, (2015)

[7]

Luyt A.S., Molefi J.A., Krump H., Thermal, mechanical and electrical properties of copper powder filled low-density and linear low-density polyethylene composites, Polymer Degrada-tion and Stability, 11, 2, pp. 1630-1636, (2005)

[8]

Haggenmueller R., Guthy C., Lukes J.R., Et al., Single wall carbon nanotube/polyethy-lene nanocomposites: thermal and electrical conductivity, Macromolecules, 1, 31, pp. 2417-2421, (2007)

[9]

John L.R., Multiwalled carbon nanotube films: fabrication techniques and applications, (2012)

[10]

Farid E., Kamadab K., Ohnabec H., Electrical properties and stability of epoxy reinforced carbon black composites, Materials Letters, 11, 19, pp. 241-251, (2001)

← 1 2 3 →