Interfacial friction damping characteristics in MWNT-filled polycarbonate composites

Abstract

The effects of strain, temperature, test frequency, and multi-walled nanotube (MWNT) weight percentage on the interfacial sliding at the tube-polymer interfaces were investigated by dynamic mechanical tests. The storage modulus first increased slightly then reached a plateau and finally decreased sharply with further increasing strain (temperature, frequency) amplitude. Moreover, the changing of the storage modulus of the nanocomposite lagged the loss modulus as a function of strain (temperature, frequency). Furthermore, with the increase of MWNT weight percentage interfacial slip was activated at relative smaller strain, lower temperature, or lower frequency. The possible influence of polymer wrapping carbon nanotubes in the interfacial area on interfacial friction was introduced.

Keywords

carbon nanotube / polycarbonate / damping / interfacial friction

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Higher Education Press and Springer-Verlag Berlin Heidelberg