シリカ配合およびカーボン配合SBRの摩擦機構に関する研究

乾燥面との摩擦

抄録

It is known that silica-filled rubbers improve the trade-off between wet traction and the rolling resistance of tires, compared with carbon black-filled rubbers. It is generally considered that the adhesion component of the friction of silica-filled rubbers is higher than that of carbon-filled rubbers, however there are few reports that show this difference in the adhesion components of friction.
In this paper, the adhesion component and the hysteresis component of friction for carbon black-filled and silica-filled rubbers are investigated. Comparing the friction force-frequency curves (F-ω curves) and the viscoelastic properties establishes that the friction force F has the form:
F=As+kE'^-1/3tanδ
where A is the area of contact, s is the shear strength of the rubbers and k is constant. The first term represents the adhesion component of the friction and the second term represents the hysteresis component. It is found that the adhesion component of silica-filled rubbers is higher than that of carbon black-filled rubbers.