| Influence of Reaction Site Position between Silica and SSBR on Properties of Silica/Carbon Black/SSBR Composites |
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| DOI： |
| Key Words: SSBR；silica；molecular chain ends modification；physical property；dynamic property |
| Author Name | Affiliation | | BAI Yu | Beijing University of Chemical Technology | | ZHAO Su-he | Beijing University of Chemical Technology | | ZHANG Xing-ying | Beijing University of Chemical Technology | | TONG Yuan-yuan | Beijing University of Chemical Technology | | ZHANG Shuai | Beijing University of Chemical Technology |
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| Abstract: |
| The physical property，dynamic property and microstructure of silica/carbon black filled star-shaped solution-polymerized styrene-butadiene rubber（SSBR） and modified SSBR（S-SSBR），in which the macromolecular chain ends were capped with siloxane terminal groups，were investigated.The results showed that，as the addition level of coupling agent（mole of siloxane group） increased，the tensile strength of SSBR composites increased at first and then decreased，and the tensile strength of S-SSBR composites decreased at first and then increased；the modulus at 300% elongation of both composites tended to increase，the temperature rise in compression fatigue test decreased，the tanδ value at 0 ℃ increased，and the tanδ value at 60 ℃ decreased.With same addition level of coupling agent，compared with SSBR composites，the modulus at 300% elongation and tanδ value at 0 ℃ of S-SSBR composites increased more，the compression fatigue temperature rise and tanδ value at 60 ℃ decreased more，and dispersion of fillers was better. |
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