The mechanical property and microscopic deformation mechanism of nanoparticle-contained graphene foam materials under uniaxial compression

doi:10.1088/1361-6528/abcfe8

IMECH-IR > 非线性力学国家重点实验室

	The mechanical property and microscopic deformation mechanism of nanoparticle-contained graphene foam materials under uniaxial compression
	Khan, Muhammad Bilal 1,2; Wang C(王超)3,4 ; Wang, Shuai 1,2; Fang, Daining 1,2; Chen, Shaohua 1,2
通讯作者	Wang, Chao(wangchao@lnm.imech.ac.cn) ; Chen, Shaohua()
发表期刊	NANOTECHNOLOGY
	2021-03-12
卷号	32 期号:11 页码:11
ISSN	0957-4484
摘要	Nanoparticle-contained graphene foams have found more and more practical applications in recent years, which desperately requires a deep understanding on basic mechanics of this hybrid material. In this paper, the microscopic deformation mechanism and mechanical properties of such a hybrid material under uniaxial compression, that are inevitably encountered in applications and further affect its functions, are systematically studied by the coarse-grained molecular dynamics simulation method. Two major factors of the size and volume fraction of nanoparticles are considered. It is found that the constitutive relation of nanoparticle filled graphene foam materials consists of three parts: the elastic deformation stage, deformation with inner re-organization and the final compaction stage, which is much similar to the experimental measurement of pristine graphene foam materials. Interestingly, both the initial and intermediate modulus of such a hybrid material is significantly affected by the size and volume fraction of nanoparticles, due to their influences on the microstructural evolution. The experimentally observed 'spacer effect' of such a hybrid material is well re-produced and further found to be particle-size sensitive. With the increase of nanoparticle size, the micro deformation mechanism will change from nanoparticles trapped in the graphene sheet, slipping on the graphene sheet, to aggregation outside the graphene sheet. Beyond a critical relative particle size 0.26, the graphene-sheet-dominated deformation mode changes to be a nanoparticle-dominated one. The final microstructure after compression of the hybrid system converges to two stable configurations of the 'sandwiched' and 'randomly-stacked' one. The results should be helpful not only to understand the micro mechanism of such a hybrid material in different applications, but also to the design of advanced composites and devices based on porous materials mixed with particles.
关键词	nanoparticle filled graphene foam material uniaixal compression mechanical property micro deformation mechanism coarse-grained molecular dynamics
DOI	10.1088/1361-6528/abcfe8
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000601418800001
关键词[WOS]	IN-SITU ; ANODE MATERIALS ; AEROGEL ; PERFORMANCE ; COMPOSITE ; NETWORKS ; STORAGE ; NANOCRYSTALS ; BEHAVIOR ; INSIGHT
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
资助项目	NSFC[11872114] ; NSFC[11532013] ; NSFC[11972348] ; NSFC[12002034] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22040503] ; CAS/SAFEA International Partnership Program for Creative Research Teams
项目资助者	NSFC ; Strategic Priority Research Program of the Chinese Academy of Sciences ; CAS/SAFEA International Partnership Program for Creative Research Teams
论文分区	二类
力学所作者排名	1
RpAuthor	Wang, Chao ; Chen, Shaohua
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/85892
专题	非线性力学国家重点实验室
作者单位	1.Beijing Inst Technol, Inst Adv Struct Technol, Beijing 100081, Peoples R China; 2.Beijing Inst Technol, Beijing Key Lab Lightweight Multifunct Composite, Beijing 100081, Peoples R China; 3.Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China; 4.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Khan, Muhammad Bilal,Wang C,Wang, Shuai,et al. The mechanical property and microscopic deformation mechanism of nanoparticle-contained graphene foam materials under uniaxial compression[J]. NANOTECHNOLOGY,2021,32,11,:11.
APA	Khan, Muhammad Bilal,王超,Wang, Shuai,Fang, Daining,&Chen, Shaohua.(2021).The mechanical property and microscopic deformation mechanism of nanoparticle-contained graphene foam materials under uniaxial compression.NANOTECHNOLOGY,32(11),11.
MLA	Khan, Muhammad Bilal,et al."The mechanical property and microscopic deformation mechanism of nanoparticle-contained graphene foam materials under uniaxial compression".NANOTECHNOLOGY 32.11(2021):11.

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