ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
The tribological and mechanical properties of polytetrafluoroethylene (PTFE)composites filled with carbon nano-fiber (CNF), short carbon fiber (SCF) and the combination ofthem were studied. The results indicate that the wear volume loss of the PTFE composite filledwith CNF or SCF, in comparison with that of pure PTFE, decreases by 1~2 orders of magnitude.And the best wear resistant composition is achieved by the combination of SCF with CNF; as anexample, PTFE+2 wt% CNF+18 wt% SCF exhibits a specific wear volume loss of 0.88 mm3,which is about 11 times lower when compared to the PTFE composite filled with 18 wt% SCF.Meanwhile, the results also show that the tensile strength of SCF or CNF filled PTFE compositesis better than that of pure PTFE. However, the combination of the two fillers decreases thetensile strength of PTFE composites. Worn surfaces were investigated using a scanning electronmicroscope, from which it is assumed that a mechanism of rolling effect, due to the filling ofnanoparticles, which has a positive protective effect for PTFE matrix
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.334-335.689.pdf
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