Wear Behavior of Functionalized Multi-walled Carbon Nanotube Reinforced Epoxy
Matrix Composites
Abu Bakar Sulong1,
Joohyuk Park1*,
Naesung Lee2,
Jeungchoon Goak2
1 Department of Mechanical Engineering, Sejong University, Seoul 143-747, Korea
2 Department of Nano and Science Technology, Sejong University, Seoul
143-747, Korea
* To whom correspondence should be addressed.
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Abstract |
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This article studies the tribological behavior of functionalized multi-walled
carbon nanotubes (MWNTs) reinforced epoxy matrix composites. MWNTs reinforced epoxy
composites are fabricated by an injection molding process. The effects on the
tribological properties of different loading concentrations and different functional
groups of MWNTs are investigated by using a linear reciprocal wear tester. As increasing
the concentration of MWNTs reduces wear loss, better tribological property was attained
on functionalized MWNTs than as-produced MWNTs. The changes in worn surface morphology
are observed in order to investigate the wear behavior. The MWNTs in the epoxy matrix
near the surface are exposed and became a lubricating working film on the worn surface.
The dispersion and interfacial bonding of MWNTs in the epoxy matrix are investigated
from the fracture surface. The existence of MWNT at the wear surface is verified by a
Raman spectrometer.
Key Words:
surface modification, multi-walled carbon nanotubes (MWNTs), tribological property, functionalization