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

doi:10.1016/j.commatsci.2021.110970

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	Aggregation of nanoparticles and their effect on mechanical properties of carbon nanotube networks
	Wu, Yue 3; Wang C(王超)1,2; Yang T(杨田)1,2
刊名	COMPUTATIONAL MATERIALS SCIENCE
	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
DOI	10.1016/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.
分类号	Q3
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关键词	BUCKYPAPER ; FILMS
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
其他责任者	Wang, Chao
内容类型	期刊论文
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
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 C,Yang T. Aggregation of nanoparticles and their effect on mechanical properties of carbon nanotube networks[J]. COMPUTATIONAL MATERIALS SCIENCE,2022,202:8.
APA	Wu, Yue,王超,&杨田.(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.