Abstract
Multi-walled carbon nanotubes (MWCNT) was first treated by concentrated H2SO4/HNO3, and then epoxy (EP) was filled with as-received and acid treated MWCNT. Fourier transform infrared spectroscopy (FT-IR) was used to analyze the surface characteristics of MWCNT. Result of electrical conductivity analysis reveals that the surface treatment could affect the formation of conductive network. Dynamical mechanical analysis indicates that the loss factor of composite was impaired by the incorporation of acid treated MWCNT. The tensile strength was increased with the increasing content of acid treated MWCNT.
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