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Viscoelastic properties of randomly entangled carbon nanotube networks under cyclic tension loading
Wang C(王超); Chen SH(陈少华)
Source PublicationComputational Materials Science
2016-06-15
Volume119Pages:46-51
ISSN0927-0256
Abstract

As one of the promising nano-materials for energy absorption and dissipation, viscoelastic properties of randomly entangled carbon nanotube (CNT) networks subjected to cyclic tension loading are investigated with coarse-grained molecular dynamic simulations (CGMD). The effect of temperature, loading frequency, pre-strain of carbon nanotubes, physical binders and chemical crosslinks on the storage and loss moduli of CNT networks as well as the micro-mechanical mechanisms is mainly focused. Not only the storage modulus but also the loss one is found to be independent of the temperature. However, both of them can be enhanced greatly by the bundle-rich microstructures induced by pre-strain. Furthermore, physical binders and chemical crosslinks can also be used to tune the viscoelastic properties of CNT networks. All the findings should be helpful not only for understanding the mechanical mechanism of CNT networks but also for optimal designs of advanced energy absorption and dissipation materials.

Graphical abstract

The storage and loss modulus of the carbon nanotube networks can be enhanced greatly by the bundle-rich microstructures induced by pre-strain.

Unlabelled figure

 

 

KeywordCnt Networksviscoelasticitycoarse-grained Molecular Dynamic Simulationmicrostructure
DOI10.1016/j.commatsci.2016.03.037
Indexed BySCI ; EI
Language英语
WOS IDWOS:000375070800007
Funding OrganizationThe work reported here is supported by NSFC through Grants #11125211, #11372317, #11532013 and the 973 Nano-project (2012CB937500).
DepartmentLNM固体物理力学
Classification二类
RankingTrue
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/60738
Collection非线性力学国家重点实验室
Recommended Citation
GB/T 7714
Wang C,Chen SH. Viscoelastic properties of randomly entangled carbon nanotube networks under cyclic tension loading[J]. Computational Materials Science,2016,119:46-51.
APA Wang C,&Chen SH.(2016).Viscoelastic properties of randomly entangled carbon nanotube networks under cyclic tension loading.Computational Materials Science,119,46-51.
MLA Wang C,et al."Viscoelastic properties of randomly entangled carbon nanotube networks under cyclic tension loading".Computational Materials Science 119(2016):46-51.
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