Tribological and mechanical properties of carbon nanofiber-filled PTFE composites

Y. J. Shi, X. Feng, X. S. Diao, H. Y. Wang, X. H. Lu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

The tribological and mechanical properties of carbon nanofiber (CNF)-filled polytetrafluoroethylene (PTFE) composites with different filler proportions were studied. The worn surfaces of PTFE and carbon nanofiber/PTFE (CNF/PTFE) composites were then examined with scanning electron microscope (SEM). The results show the friction properties of CNF/PTFE composites decreased then increased with the increasing content of CNFs, while the anti-wear properties of CNF/PTFE composites were much higher than that of pure PTFE. The best anti-wear property was obtained with the composite containing 2 wt.% CNFs. The wear volume loss of the composite contained 2 wt.% CNFs was only about 1/700 that of PTFE without CNFs under the condition of 150N and 1.4m/s. Meanwhile, the results also indicate that the mechanical properties of CNF/PTFE composites increased then decreased with the increasing filler concentration, and the composite contained 1 wt.% CNFs has the best mechanical properties. Compare to pure PTFE, the tensile strength and the elongation of CNF/PTFE composites increased about 20% and 70% respectively when the filler content is 1 wt.%. It was seen from the worn surfaces micrographs of PTFE and CNF/PTFE composites that CNFs greatly reduce the adhesive wear of PTFE.

Original languageEnglish
Title of host publicationNanoscience and Technology
PublisherTrans Tech Publications Ltd
Pages975-978
Number of pages4
EditionPART 2
ISBN (Print)3908451302, 9783908451303
DOIs
StatePublished - 2007
EventChina International Conference on Nanoscience and Technology, ChinaNANO 2005 - Beijing, China
Duration: 9 Jun 200511 Jun 2005

Publication series

NameSolid State Phenomena
NumberPART 2
Volume121-123
ISSN (Print)1012-0394

Conference

ConferenceChina International Conference on Nanoscience and Technology, ChinaNANO 2005
Country/TerritoryChina
CityBeijing
Period9/06/0511/06/05

Keywords

  • Carbon nanofiber
  • Composite
  • Friction
  • PTFE
  • Tensile strength
  • Wear

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