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Journal of Composite Materials
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Wear Behavior of Functionalized Multi-walled Carbon Nanotube Reinforced Epoxy Matrix Composites

Abu Bakar Sulong

Department of Mechanical Engineering, Sejong University, Seoul 143-747, Korea

Joohyuk Park

Department of Mechanical Engineering, Sejong University, Seoul 143-747, Korea, jhpark{at}sejong.ac.kr

Naesung Lee

Department of Nano & Science Technology, Sejong University, Seoul 143-747, Korea

Jeungchoon Goak

Department of Nano & Science Technology, Sejong University, Seoul 143-747, Korea

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

This version was published on November 1, 2006

Journal of Composite Materials, Vol. 40, No. 21, 1947-1960 (2006)
DOI: 10.1177/0021998306061305
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