| Effects of BR and Silica on Properties of Carbon Black/NR Composite |
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| DOI： |
| Key Words: NR；BR；carbon black；silica；composite；comprehensive property |
| Author Name | Affiliation | | XIANG Pu-yu | Beijing University of Chemical Technology | | YU Xiao-bo | Beijing University of Chemical Technology | | HE Zi-feng | Beijing University of Chemical Technology | | LIU Yu-wan | Aeolus Tire Co.，Ltd | | WU You-ping | Beijing University of Chemical Technology |
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| Abstract: |
| The effects of BR and silica on the properties of carbon black/NR composite were experimentally investigated.The results showed that，compared to carbon black/NR composite，the scorch time of carbon black/NR/BR compound was reduced slightly，the crosslink degree increased，the modulus at 300% elongation of the vulcanizate increased，the compression heat build-up and cut resistance was decreased，the abrasion resistance was improved and rolling resistance decreased.When silica was added to carbon black/NR compound， the crosslink degree of the compound decreased，the elongation at break and tear strength of the vulcanizate increased significantly，the compression heat build-up increased slightly，the cut resistance and abrasion resistance were improved，but the rolling resistance increased(thus coupling agent must be used). |
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