Multi-scale numerical simulations of thermal expansion properties of CNT-reinforced nanocomposites

Alamusi, Affa, Hu, Ning, Qiu, Jianhui, Li, Yuan, Chang, Christiana, Atobe, Satoshi, Fukunaga, Hisao, Liu, Yaolu, Ning, Huiming, Wu, Liangke, Li, Jinhua, Yuan, Weifeng, Watanabe, Tomonori, Yan, Cheng, & Zhang, Yajun (2013) Multi-scale numerical simulations of thermal expansion properties of CNT-reinforced nanocomposites. Nanoscale Research Letters, 8(15).

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Abstract

In this work, the thermal expansion properties of carbon nanotube (CNT)-reinforced nanocomposites with CNT content ranging from 1 to 15 wt% were evaluated using a multi-scale numerical approach, in which the effects of two parameters, i.e., temperature and CNT content, were investigated extensively. For all CNT contents, the obtained results clearly revealed that within a wide low-temperature range (30°C ~ 62°C), thermal contraction is observed, while thermal expansion occurs in a high-temperature range (62°C ~ 120°C). It was found that at any specified CNT content, the thermal expansion properties vary with temperature - as temperature increases, the thermal expansion rate increases linearly. However, at a specified temperature, the absolute value of the thermal expansion rate decreases nonlinearly as the CNT content increases. Moreover, the results provided by the present multi-scale numerical model were in good agreement with those obtained from the corresponding theoretical analyses and experimental measurements in this work, which indicates that this multi-scale numerical approach provides a powerful tool to evaluate the thermal expansion properties of any type of CNT/polymer nanocomposites and therefore promotes the understanding on the thermal behaviors of CNT/polymer nanocomposites for their applications in temperature sensors, nanoelectronics devices, etc.

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ID Code: 58395
Item Type: Journal Article
Refereed: Yes
Keywords: Polymer-matrix composites (PMC), Thermal properties, Numerical analysis, Carbon nanotube (CNT)
DOI: 10.1186/1556-276X-8-15
ISSN: 1556-276X
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MATERIALS ENGINEERING (091200) > Composite and Hybrid Materials (091202)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MECHANICAL ENGINEERING (091300) > Numerical Modelling and Mechanical Characterisation (091307)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MECHANICAL ENGINEERING (091300) > Solid Mechanics (091308)
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: 2013 Alamusi et al.; licensee Springer.
Copyright Statement: This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction
in any medium, provided the original work is properly cited.
Deposited On: 19 Mar 2013 01:45
Last Modified: 26 Apr 2013 11:12

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