プラスチックの潤滑特性に及ぼす内部構造の影響
Effect of Internal Structure upon the Friction and Wear Properties of Plastics
関口 勇・山口章三郎・高根誠一・松本二郎・古川雅晴
Sekiguchi, Isamu / Yamaguchi, Yukisaburo / Takane, Seiichi / Matsumoto, Jiro / Fueukawa, Masaharu
The effects of internal structure, degree of polymerization, crystallinity and molecular orientation upon the friction and wear properties of plastics against steel were studied in this article.
1) The friction coefficients of polyethylene(PE) and polyacetal (POM) increase with the increasing of molecular weight. The sliding wear rate (Vs) of POM increases with the increasing of molecular weight.
2) The friction coefiicients of PE, polyethylene terephthalate (PET) and polytetrafluoroethylene (PTFE) decrease with the increasing of crystallinity degree. The Vs of PE and POM decrease with the increasing of crystallinity degree, that Vs of PTFE increases with the increasing of crystallinity degree.
3) The friction coefficients of PE, PET and PTFE for the orientated direction decrease with the increasing of the orientated direction and degree of orientation.
Key words: Tribology / Friction / Wear / Internal structure / Crystallinity