Abstract
In recent years, silica filled styrene butadiene rubber have been used in tread rubber of low rolling resistance tires for automobile. The purpose of this study is to clarify the wear property of silica filled rubber. The experiment was carried out using pin-on-disk tribometer, six types of styrene butadiene rubber blended with butadiene rubber with different contents of silica and carbon black filler were used as rubber specimens and the specimen was rubbed against metal gauze in silicone oil. As a result, it was founded that the more specimen contains silica filler, the more smaller specific wear rate K and coefficient of friction u. The worn surface of specimen was observed by scanning electron microscope (SEM), and all specimens have abrasion pattern. Fatigue test was also conducted and surface area in the vicinity of a crack was observed by an atomic force microscope.
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