| Study on Properties of Blends of NR and SBR with Different Styrene Content |
| Received:November 12, 2018 Revised:November 12, 2018 |
| DOI：10.12136/j.issn.1000-890X.2019.11.0825 |
| Key Words: NR；SBR；high styrene content；blend；curing characteristics；physical property；damping propertyy |
| Author Name | Affiliation | E-mail | | WEI Jijun | Qingdao University of Science and Technology | 609271392@qq.com | | LIU Yingjie | Qingdao University of Science and Technology | | | GAO Shengqiang | Qingdao University of Science and Technology | | | LYU Kanghui | Qingdao University of Science and Technology | | | XUE Meiling* | Qingdao University of Science and Technology | |
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| Abstract: |
| The common styrene-butadiene rubber（SBR）（SBR1，styrene content was 0. 235）and high
styrene SBR（SBR2，styrene content was 0. 68）were blended with natural rubber（NR），respectively，and
the effects of blend ratio of NR/SBR and styrene content of SBR on the curing characteristics，physical
properties and damping properties of the blends were studied. The results showed that，with the increase of
SBR content，the curing rate，tensile strength and tear strength of NR/SBR blends decreased，the hysteresis
energy density（HED）of NR/SBR1 blends increased at first and then decreased，while the HED of NR/
SBR2 blends increased. At the same blend ratio of NR/SBR，the curing rate，tensile strength，elongation at
break and tear strength of NR/SBR2 blends were lower than those of NR/SBR1 blends，respectively，but the
effective damping temperature range of NR/SBR2 blends was extended to high temperature range. |
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