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Aggregation of nanoparticles and their effect on mechanical properties of carbon nanotube networks

文献类型：期刊论文

作者Wu, Yue3; Wang, Chao1,2; Yang, Tian1,2; Wang C(王超)
刊名COMPUTATIONAL MATERIALS SCIENCE
出版日期2022-02-01
卷号202页码:8
关键词Carbon nanotube networks Nanoparticles Microstructure Mechanical properties Coarse-grained molecular dynamics
ISSN号0927-0256
DOI10.1016/j.commatsci.2021.110970
通讯作者Wang, Chao(wangchao@lnm.imech.ac.cn)
英文摘要Nanoparticles (NPs) are widely used to tune the mechanical and physical properties of carbon nanotube (CNT) networks in many practical applications. However, the distribution of NPs in CNT networks and their effects on microstructural evolutions and mechanical properties remain elusive. We employed the coarse-grained molecular dynamics (CGMD) simulations to systematically investigate these issues. First, we found that compared to ambient temperature and the frequency of cyclic loads, the relative cohesion energy of NPs and strain amplitude of cyclic loads are more important factors for controlling the aggregation of NPs; it was also revealed that NPs with larger relative cohesion energy and in larger-strain cyclic loads would aggregate more severely in CNT networks. Second, we observed that the Young's modulus and the tensile strength of the material can be increased by up to -3.2 and -2.0 times, respectively, at the critical volume fraction of NPs (-21.6%). Finally, the underlying mechanisms by which NPs strengthen the inter-tube joints and constrain the bundling of CNTs are unveiled. These results should be useful for the optimal design of CNT-based advanced materials.
WOS关键词BUCKYPAPER ; FILMS
资助项目NSFC[11972348] ; NSFC[11790292] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22040503] ; Inner Mongolia Natural Science Foundation Project[2019MS01018]
WOS研究方向Materials Science
语种英语
WOS记录号WOS:000711575900002
资助机构NSFC ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Inner Mongolia Natural Science Foundation Project
源URL[http://dspace.imech.ac.cn/handle/311007/87892]  
专题力学研究所_非线性力学国家重点实验室
通讯作者Wang, Chao
作者单位1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China
3.Inner Mongolia Univ Technol, Sch Chem Engn, Hohhot 010051, Inner Mongolia, Peoples R China
推荐引用方式
GB/T 7714		 Wu, Yue,Wang, Chao,Yang, Tian,et al. Aggregation of nanoparticles and their effect on mechanical properties of carbon nanotube networks[J]. COMPUTATIONAL MATERIALS SCIENCE,2022,202:8.
APA Wu, Yue,Wang, Chao,Yang, Tian,&王超.(2022).Aggregation of nanoparticles and their effect on mechanical properties of carbon nanotube networks.COMPUTATIONAL MATERIALS SCIENCE,202,8.
MLA Wu, Yue,et al."Aggregation of nanoparticles and their effect on mechanical properties of carbon nanotube networks".COMPUTATIONAL MATERIALS SCIENCE 202(2022):8.

入库方式： OAI收割

来源：力学研究所

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