English Abstract

Fracture Reveals Real Structure and Characters of Rubber
Part 4: Viscosity to Characterize the Friction and Wear of Cross-linked Rubber

Yoshihide FUKAHORI
Queen Mary University of London
Nippon Gomu Kyokaishi,(2015),88(3),86-92 General Review in Japanese

The surface of cross-linked rubber gives a sticky touch in general. Its frictional coefficient is quite high and very sensitive to velocity and temperature, in addition to generating stick-slip motion and Schallamach wave during frictional sliding. Similar behaviors are also observed in gel and uncross-linked rubber, which seems to indicate that a meniscus is formed in common on the surface of these materials in frictional sliding. Such a component spreading over a surface of cross-linked rubber may be an uncross-linked rubber phase, which governs the friction and wear of cross-linked rubber.

Keywords: Stick-slip Motion, Schallamach Wave, Viscosity, Cross-linked Rubber, Uncross-linked Rubber, Gel