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Tribological behaviors of amino functionalized graphene reinforced PTFE composite

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Graphene was successfully modified by amino-functionalization process. The Fourier transform-infrared spectroscopy, Raman spectroscopy, and X-ray diffractometer were used to characterize the amino-functionalization result. The transmission electron microscopy was used to… Click to show full abstract

Graphene was successfully modified by amino-functionalization process. The Fourier transform-infrared spectroscopy, Raman spectroscopy, and X-ray diffractometer were used to characterize the amino-functionalization result. The transmission electron microscopy was used to visualize the morphology of graphene and fractured surface of its resulting composite. The tribological behaviors of amino functionalized graphene reinforced polytetrafluoroethylene composite were evaluated by using a face-to-face contact mode under dry sliding/water lubricated condition. The worn surface was characterized by using a scanning electronic microscope equipped with an energy dispersive spectroscopy in order to find the reasons for the better tribological behaviors. The anti-friction and anti-wear mechanisms of amino functionalized graphene reinforced polytetrafluoroethylene composite were elucidated based on the experimental results. In all, this work is hoped to be helpful in designing and researching a new industrial material which can be used for water lubricated conditions in new-energy-vehicle fields.

Keywords: amino functionalized; functionalized graphene; graphene; graphene reinforced; tribological behaviors; spectroscopy

Journal Title: Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology
Year Published: 2018

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