| Effect of Silica on Fatigue Resistance of Carbon Black/SBR Composite |
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| DOI： |
| Key Words: SBR ； carbon black ； silica ； composite ； fatigue resistance |
| Author Name | Affiliation | | HUA NG Zhou | Beijing University of Chemical Technology | | YU Xiao-bo | Beijing University of Chemical Technology | | WU You-pjng | Beijing University of Chemical Technology |
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| Abstract: |
| The effect of silica on the fatigue resistance of carbon black/SBR composite was investi gated. The results showed that， compared with carbon black/SBR composite， the tio of silica/carbon black/SBR compound was extended，the crosslink density decreased，the modulus at 100% and 300%elongation of the vulcanizates decreased， and the elongation at break increased. With silica， the fatigue life of SBR composite was extended at the same strain level. However，the sensitivity of tearing energy on fatigue crack growth rate of the composite changed little. It was found that the silica with smaller the particle size ，larger specific surface area and lower structure， was more effective to improve the fatigue resistance of SBR composite. |
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