Effects of CNT Diameter on the Uniaxial Stress‐Strain Behavior of CNT/Epoxy Composites | Zendy

N. Yu | Zendy; Y. W. Chang | Zendy

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Effects of CNT Diameter on the Uniaxial Stress‐Strain Behavior of CNT/Epoxy Composites

Author(s) -

N. Yu,

Y. W. Chang

Publication year - 2008

Publication title -

journal of nanomaterials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.463

H-Index - 66

eISSN - 1687-4129

pISSN - 1687-4110

DOI - 10.1155/2008/834248

Subject(s) - materials science , composite material , epoxy , micromechanics , carbon nanotube , stiffness , ultimate tensile strength , mass fraction , stress (linguistics) , composite number , philosophy , linguistics

The present work studies the effects of the diameter of carbon nanotube (CNT) as well as CNT weight fraction on the uniaxial stress-strain behavior, stiffness, and strength of CNT-reinforced epoxy-matrix composites. The experimental results show that average Young's moduli of 5 wt%-CNT/epoxy composites with a CNT diameter D<20 nm and D=40∼60 nm are 4.56 GPa and 4.36 GPa, and the average tensile strengths are 52.89 MPa and 46.80 MPa, respectively, which corresponds to a percentage increase of 61.1%, 54.1%, 106%, and 82.3%, respectively. Two micromechanics models are employed and the predicted Young's moduli are benchmarked with the experimental data of MWCNT-reinforced epoxy-matrix composites

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