TY - JOUR
T1 - Tribological and mechanical properties of PTFE composites filled with the combination of short carbon fiber and carbon nano-fiber
AU - Shi, Yijun
AU - Feng, Xin
AU - Wang, Huaiyuan
AU - Lu, Xiaohua
PY - 2007
Y1 - 2007
N2 - The tribological and mechanical properties of polytetrafluoroethylene (PTFE) composites filled with carbon nano-fiber (CNF), short carbon fiber (SCF) and the combination of them were studied. The results indicate that the wear volume loss of the PTFE composite filled with 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 an example, 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 composites is better than that of pure PTFE. However, the combination of the two fillers decreases the tensile strength of PTFE composites. Worn surfaces were investigated using a scanning electron microscope, from which it is assumed that a mechanism of rolling effect, due to the filling of nanoparticles, which has a positive protective effect for PTFE matrix.
AB - The tribological and mechanical properties of polytetrafluoroethylene (PTFE) composites filled with carbon nano-fiber (CNF), short carbon fiber (SCF) and the combination of them were studied. The results indicate that the wear volume loss of the PTFE composite filled with 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 an example, 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 composites is better than that of pure PTFE. However, the combination of the two fillers decreases the tensile strength of PTFE composites. Worn surfaces were investigated using a scanning electron microscope, from which it is assumed that a mechanism of rolling effect, due to the filling of nanoparticles, which has a positive protective effect for PTFE matrix.
KW - Carbon nano-fiber, PTFE
KW - Composite
KW - Friction
KW - Mechanical
KW - Wear
UR - http://www.scopus.com/inward/record.url?scp=33847081254&partnerID=8YFLogxK
U2 - 10.4028/0-87849-427-8.689
DO - 10.4028/0-87849-427-8.689
M3 - 文章
AN - SCOPUS:33847081254
SN - 1013-9826
VL - 334-335 II
SP - 689
EP - 692
JO - Key Engineering Materials
JF - Key Engineering Materials
ER -