| Influence of in situ modification of silica with coupling agent Si69 on the properties of SSBR |
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| DOI： |
| Key Words: coupling agent；in-situ modification；silica；SSBR；loss factor；wet skid resistance |
| Author Name | Affiliation | | WU You-ping | Beijing University of Chemical Technology | | ZHAO Qing-song | Beijing University of Chemical Technology | | ZHAO Su-he | Beijing University of Chemical Technology |
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| Abstract: |
| The influence of in-situ modification of silica with coupling agent Si69 on the properties of solution SBR was investigated.The results showed that in-situ modification of silica with coupling agent Si69 could decrease Mooney viscosity and Payne effect of SSBR compound，and improve its processing properties；the dispersion degree and uniformity of silica in SSBR vulcanizate were improved；Shore A hardness of the vulcanizate was decreased and stress at 300% elongation increased.RPA analysis indicated that in-situ modification of silica with coupling agent Si69 could decrease tanδ of SSBR compound at the condition of 60 ℃，multiple strains and large strains and wide range of frequency.DTMA results showed that in-situ modification of silica with coupling agent Si69 could increase tanδ of SSBR vulcanizate at 0 ℃，and thus increase the wet skid resistance of the composites. |
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