• 文献标题:   Synergism lubrication of graphene and carbon nanotube in polymeric composites under drying sliding condition
  • 文献类型:   Article
  • 作  者:   WAN CX, JIA D, LI J, ZHAN SP, ZHANG WL, YANG T, LI YH, DUAN HT
  • 作者关键词:   polyimide, graphene oxide, carbon nanotube, binary hybrid, tribology
  • 出版物名称:   APPLIED SURFACE SCIENCE
  • ISSN:   0169-4332 EI 1873-5584
  • 通讯作者地址:  
  • 被引频次:   0
  • DOI:   10.1016/j.apsusc.2023.157430 EA MAY 2023
  • 出版年:   2023

▎ 摘  要

The internal lubrication of polyimide (PI) with added graphene oxides (GOs) and carbon nanotubes (MWCNTs), as well as their binary hybrid nano-additives (GCNTs), were contrastively investigated under dry sliding con-ditions. The friction coefficient of neat PI or its nanocomposites decreases as a stepwise increase of the load fitting a negative exponential equation while growing linearly as a stepwise increase of the velocity. Micro -morphological and physicochemical variations occurring at friction interfaces have been analyzed using X-ray photoelectron spectroscopy, Raman spectroscopy, and high-resolution transmission electron microscopy results. Given the structural discrepancy between GOs and MWCNTs, the obtaining results showed that the different microcosmic tribological mechanisms for GCNTs enable to produce a synergistic lubricating effect, resulting in facilitating the complicating interface sliding between nanocomposites and steel balls.