English Abstract
Studies on the Wear Mechanism of Silica-Filled and Carbon Black-Filled SBRs
Naoya AMINO1,
Yoshitaka UCHIYAMA2
Tomoaki IWAI2
1 Yokohama Rubber Co., Ltd., Hiratsuka, Kanagawa, Japan
2 Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa, Ishikawa, Japan
Nippon Gomu Kyokaishi,(2008),81(8),346-350 Original Paper in Japanese

Wear properties of silica-filled SBR and three kinds of carbon black-filled SBRs were investigated. The wear volume of rubber was measured when rubber specimens were rubbed against metal gauze using a pin-on-cylinder type tribometer.
The coefficient of friction consists of adhesion component of frictionμA and hysteresis component of friction μH.
The adhesion component of friction is given by μA =As/W, where A is contact area, s is shear strength, W is applied load. It is thought that the wear volume depends on friction energy dissipated.
In this paper the wear volume per unit friction energy K/μA was compared with the energy density at break U. It is found that K/μA and 1/U showed linear correlation for the carbon black-filled SBRs, while the silica-filled SBR showed higher K/μA value compared to that of the carbon black-filled SBRs.

(Received on March 25, 2008)
(Accepted on June 9, 2008)

Wear, Silica, Carbon Black, SBR, Energy Density at Break, Tribology, Adhesion Component of Friction