TY - JOUR
T1 - Friction and wear of semi-crystalline polytetrafluoroethylene with spherulitic micro-morphology
AU - Wang, Xiaoqun
AU - Zhao, Zhenlu
AU - Chen, Darong
AU - Du, Shany
PY - 2010/7
Y1 - 2010/7
N2 - Polytetrafluoroethylene (PTFE) is an important engineering material with a low coefficient of friction but a high rate of wear. As a semi-crystalline polymer, its wear resistance is related to its micro-morphology. Friction and wear properties of semi-crystalline non-spherulitic PTFE have been widely studied, but no investigation is reported about tribological properties of spherulitic PTFE due to difficulties in finding such properties. In this paper, friction and wear properties of PTFE with spherulitic micro-morphology are studied for the first time. The results show that, first, under the same experimental condition, when two kinds of PTFE are rubbed against the steel disc, the number and size of debris of spherulitic PTFE are much less and smaller than that of debris of PTFE without spherulitic crystals. This means that the wear resistance of spherulitic PTFE is better than that of semi-crystalline PTFE without spherulitic micro-morphology. Second, the friction property of spherulitic PTFE is also different from that of PTFE without spherulitic crystals. Finally, the friction and wear mechanisms of spherulitic PTFE and non-spherulitic PTFE are compared.
AB - Polytetrafluoroethylene (PTFE) is an important engineering material with a low coefficient of friction but a high rate of wear. As a semi-crystalline polymer, its wear resistance is related to its micro-morphology. Friction and wear properties of semi-crystalline non-spherulitic PTFE have been widely studied, but no investigation is reported about tribological properties of spherulitic PTFE due to difficulties in finding such properties. In this paper, friction and wear properties of PTFE with spherulitic micro-morphology are studied for the first time. The results show that, first, under the same experimental condition, when two kinds of PTFE are rubbed against the steel disc, the number and size of debris of spherulitic PTFE are much less and smaller than that of debris of PTFE without spherulitic crystals. This means that the wear resistance of spherulitic PTFE is better than that of semi-crystalline PTFE without spherulitic micro-morphology. Second, the friction property of spherulitic PTFE is also different from that of PTFE without spherulitic crystals. Finally, the friction and wear mechanisms of spherulitic PTFE and non-spherulitic PTFE are compared.
KW - Crystal engineering
KW - Polymers
KW - Polytetrafluoroethylene
KW - Spherulitic
KW - Wear
UR - https://www.scopus.com/pages/publications/77956572440
U2 - 10.1002/cjoc.201090224
DO - 10.1002/cjoc.201090224
M3 - 文章
AN - SCOPUS:77956572440
SN - 1001-604X
VL - 28
SP - 1296
EP - 1300
JO - Chinese Journal of Chemistry
JF - Chinese Journal of Chemistry
IS - 7
ER -