Friction Properties of Polymer Matrix Composites Filled with Carbon Nanotube

Enomoto, Kazuki; Yasuhara, Toshiyuki; Ohtake, Naoto; Kitakata, Shintaro; Murakami, Hiroya

doi:10.1299/jsmemecjo.2003.6.0_159

Cited by 1 publication

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“…A number of studies have been conducted on the mechanical properties of CNT/polymer composites. Various polymers such as polystyrene,7, 8 polycarbonate,9 polyethylene,10 poly(methyl methacrylate),11 poly(vinyl alchol),12 polyacrylonitrile,13 poly (ethylene terephthalate) (PET),14 polyimide,15 and epoxy resin16–18 have been tested as the matrix polymer and various mechanical properties such as tensile and bending strengths and moduli, yield stress, fracture toughness, fatigue, and friction have been investigated. Carbon black (CB), which is also the nanometer scale filler but with the aspect ratio of about unity, is known to increase the fracture toughness of polymers 18, 19.…”

Section: Introductionmentioning

confidence: 99%

A comparative study of fracture behavior between carbon black/poly(ethylene terephthalate) and multiwalled carbon nanotube/poly(ethylene terephthalate) composite films

Kobayashi

Shioya

Tanaka

et al. 2007

J of Applied Polymer Sci

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Fracture behavior of amorphous poly(ethylene terephthalate) (PET) films added multiwalled carbon nanotube (MWCNT) has been compared with that of the PET films added with carbon black (CB) to elucidate the effects of the large aspect ratio of MWCNT. Fracture toughness has been evaluated using the essential work of fracture tests. Evolution of the crazes has been analyzed by conducting time-resolved small-angle X-ray scattering measurements during tensile deformation of the films at room temperature using synchrotron radiation. CB and MWCNT increased the fracture toughness of the PET film by increasing the plastic work of fracture. This resulted from the effects of the fillers to prevent the localization of deformation upon the crazes formed at earlier stages of tensile deformation and to retard the growth of the fibrils in the crazes to a critical length. The CB particles provided a number of sites where the crazes were preferably formed due to stress concentration. In the case of MWCNT, on the other hand, the widening of the crazes formed at earlier stages was suppressed due to the bridging effect arising from the large aspect ratio of MWCNT.

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