Fabrication of carbon nanotube/epoxy nanocomposite and characterization of its mechanical properties = 탄소나노튜브/에폭시 나노복합물질의 제조 및 기계적 특성평가

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In this study, carbon nanotube polymer nanocomposites have been fabricated incorporating single walled carbon nantubes (SWNTs) or multiwalled carbon nanotubes (MWNTs) in a thermosetting polymer matrix, epoxy resin. Nanoindentation measurements showed that elastic modulus of epoxy polymer matrix has changed from 3.5 GPa to 4.0 GPa (~ 15 % increase) only for 0.005 wt% single walled carbon nanotubes loading. The hardness of the single walled carbon nanotube incorporated epoxy nanocomposites remained nearly unchanged for 0.005 wt % nanotube loading. Multiwalled carbon nanotube incorporated epoxy nanocomposites showed deterioration of both the hardness, from 0.2 GPa to 0.08 GPa (~factor 2.5), and elastic modulus, from 3.5 GPa to 2.1 GPa (~ factor 1.6), for 0.02 wt % nanotube loading. Homogeneity study using continuous stiffness measurement (CSM) mode of indentation techniques revealed the lack in homogeneity of the fabricated nancomposite may be responsible for deteriorating mechanical properties. High resolution scanning electronic microscopic (SEM) images taken from cross section of carbon nanotubes incorporated epoxy nanocomposites showed several poorly attached thin layers of nanocomposites staked on each other which may be another cause of property deterioration.
Advisors
Choi, Sung-Minresearcher최성민researcher
Description
한국과학기술원 : 원자력및양자공학과,
Publisher
한국과학기술원
Issue Date
2007
Identifier
268847/325007  / 020054334
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 원자력및양자공학과, 2007. 8, [ v, 45 p. ]

Keywords

CNT; epoxy; nanocomposite; mechanical property; nano-indentation; carbon nanotube; 탄소나노튜브; 에폭시; 나노복합물질; 기계적 특성; 나노인덴테이션

URI
http://hdl.handle.net/10203/49531
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=268847&flag=dissertation
Appears in Collection
NE-Theses_Master(석사논문)
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