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Tribologic properties and crystallization behaviour of filled poly(tetrafluoroethylene) resins
Author(s) -
Dobreva A.,
Kopchev P.,
Veleva M.
Publication year - 1994
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170290406
Subject(s) - tetrafluoroethylene , nucleation , materials science , crystallinity , crystallization , graphite , basalt , oxide , composite material , molybdenum , chemical engineering , polymer , chemistry , metallurgy , geology , organic chemistry , geochemistry , copolymer , engineering
The coefficient of friction and wear rate of poly(tetrafluoroethylene) filled with molybdenum disulphide, graphite, lead oxide, and basalt are determined. It is found that basalt decreases the wear rate 2000 times. The degree of crystallinity and other nucleation characteristics are also studied. It is estimated that the nucleation activity of basalt is 0.9. The specific surface energy at the melt/crystal interface is found to be 9 · 10 −3 J/m 2 and the adhesion energy between poly(tetrafluoroethylene) and basalt is 2 · 10 3 J/m 2 .