Tribology Letters

, 67:18 | Cite as

Effects of Copper Nanoparticles Located in Different Regions of Polytetrafluoroethylene/Polyimide Blends on the Morphology, Mechanical and Tribological Properties of PTFE Composites

  • Yuanliang Zhao
  • Xiaowen QiEmail author
  • Wenli Zhang
  • Bingli Fan
  • Qingxiang Yang
Original Paper


The effects of copper nanoparticles (Cu) located in different regions of polytetrafluoroethylene/polyimide (PTFE/PI) blends on the morphology, thermal, mechanical, and tribological properties of PTFE composites were studied. Region one is PI phases (the corresponding composites is denoted as PPC), region two is PTFE phases and the interface between PTFE and PI (the corresponding composites is denoted as PPC-m). Results indicate that the incorporation of Cu nanoparticles into PI phases improves the dispersibility and homogeneity of PI phases. As a consequence, the crystallinity of PTFE composites is reduced, but compressive strength and modulus of PTFE composites are enhanced by 50.3% and 14.4% respectively. In addition, self-lubricity and wear resistance of PTFE composites are improved by 10.4% and 50.5%. Scanning electron microscopy (SEM) demonstrates that PI phases with Cu nanoparticles hinder the direct contact between PTFE matrix and counterparts. However, Cu nanoparticles located in PTFE matrix and the interface between PTFE and PI deteriorates the dispersibility and homogeneity of PI phases, which lead to the poor mechanical and tribological performance of PTFE composites.


PTFE self-lubricating materials Nanoparticles Dispersion Tribological properties 


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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Yuanliang Zhao
    • 1
    • 2
    • 3
  • Xiaowen Qi
    • 1
    • 2
    Email author
  • Wenli Zhang
    • 1
    • 2
  • Bingli Fan
    • 1
    • 2
  • Qingxiang Yang
    • 2
    • 4
  1. 1.School of Mechanical EngineeringYanshan UniversityQinhuangdaoPeople’s Republic of China
  2. 2.Aviation Key Laboratory of Science and Technology on Generic Technology of Self-Lubricating Spherical Plain BearingYanshan UniversityQinhuangdaoPeople’s Republic of China
  3. 3.School of Mechanical EngineeringShandong University of TechnologyZiboPeople’s Republic of China
  4. 4.School of Material Science and EngineeringYanshan UniversityQinhuangdaoPeople’s Republic of China

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