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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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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9 citations in Scopus
2 citations in Web of Science®
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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 (, 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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