@Article{icces.2023.09163,
AUTHOR = {Shuai Wang, Lihong Liang},
TITLE = {Tensile	Properties	and	Microscopic	Mechanism	of	Carbon	 Nanotube/Graphene	Foam	Materials},
JOURNAL = {The International Conference on Computational \& Experimental Engineering and Sciences},
VOLUME = {26},
YEAR = {2023},
NUMBER = {4},
PAGES = {1--2},
URL = {http://www.techscience.com/icces/v26n4/54073},
ISSN = {1933-2815},
ABSTRACT = {Compared	 to	pure	carbon	nanotube	 (CNT)	 foam	 (CF)	and	pure	graphene	 foam	 (GrF),	 the	CNT/graphene	
composite	foam	show	enhanced	mechanical	properties,	using	coarse-grained	molecular	dynamics	method,	
the	 tensile	 and	 compressive	 properties	 and	 corresponding	 deformation	 mechanism	 of	 several	 typical	
CNT/graphene	composite	 foams	were	studied.	The	CNT	coating	could	enhance	 the	bending	resistance	of	
graphene,	based	on	the	CNT-coated	graphene	flakes,	the	CNT-coated	graphene	foam	(CCGF)	is	constructed,	
which	shows	better	compressive	modulus	due	to	the	enhanced	bending	resistance	of	CNT-coated	graphene	
flakes	compared	to	graphene	in	pure	GrF	[1].	CNT	can	enhance	the	mechanical	properties	of	graphene	foams	
not	only	by	influencing	the	properties	of	graphene	but	also	by	enhancing	the	crosslinkers	between	graphene.	
The	mechanical	response	and	microscopic	mechanism	of	GrF	interconnected	by	both	short	crosslinkers	and	
long	 CNTs	 (named	 CNT	 bonded	 GrF,	 CbGrF)	 under	 tension	 and	 compression	 are	 further	 studied.	Under	
tension,	the	long	CNTs	play	a	reinforcing	role	at	a	larger	tensile	strain,	leading	to	larger	tensile	strength	and	
toughness.	Under	compression,	the	sliding	and	rotation	of	graphene	flakes	in	CbGrF	are	prevented	by	long	
CNTs,	resulting	in	higher	compressive	stiffness	 than	 that	of	pure	GrFs	 [2].	Finally,	we	studied	 the	role	of	
graphene	 in	 the	 graphene-filled	 CNT	 foam	 (GFCF)	 and	 the	 corresponding	 microscopic	 deformation	
mechanism.	 It	 is	 found	 that	 the	 filling	 of	 graphene	 inhibits	 the	 aggregation	 of	 CNTs,	 impedes	 the	
rearrangement	of	CNTs	and	enhances	the	dispersion	of	CNTs,	ultimately	improves	the	compressive	modulus	
of	the	whole	material	through	improving	the	bending	ability	of	CNTs.	The	results	in	this	paper	deepen	the	
understanding	of	the	microscopic	mechanisms	of	CNT/graphene	foam	and	provide	scientific	guidance	for	
the	application	of	CNT	and	graphene-based	materials},
DOI = {10.32604/icces.2023.09163}
}