ISSN:
1662-9779
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Physics
Notes:
The tribological and mechanical properties of carbon nanofiber (CNF)-filledpolytetrafluoroethylene (PTFE) composites with different filler proportions werestudied. The worn surfaces of PTFE and carbon nanofiber/PTFE (CNF/PTFE)composites were then examined with scanning electron microscope (SEM). Theresults show the friction properties of CNF/PTFE composites decreased thenincreased with the increasing content of CNFs, while the anti-wear properties ofCNF/PTFE composites were much higher than that of pure PTFE. The best anti-wearproperty was obtained with the composite containing 2 wt.% CNFs. The wear volumeloss of the composite contained 2 wt.% CNFs was only about 1/700 that of PTFEwithout CNFs under the condition of 150N and 1.4m/s. Meanwhile, the results alsoindicate that the mechanical properties of CNF/PTFE composites increased thendecreased with the increasing filler concentration, and the composite contained 1wt.% CNFs has the best mechanical properties. Compare to pure PTFE, the tensilestrength 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 surfacesmicrographs of PTFE and CNF/PTFE composites that CNFs greatly reduce theadhesive wear of PTFE
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/23/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.121-123.975.pdf
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