| Effects of dynamic tension fatigue on the structure and physical properties of SBR compounds |
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| DOI： |
| Key Words: SBR；silica；dynamic tension fatigue；cross-link density；physical property；dynamic property |
| Author Name | Affiliation | | HUANG Yu-hua | Qingdao University of Science and Technology | | LIU Ji-wen | Qingdao University of Science and Technology | | ZHAO Shu-gao | Qingdao University of Science and Technology | | ZHANG Ping | Qingdao University of Science and Technology |
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| Abstract: |
| The effects of dynamic tension fatigue on the structures and physical properties of unfilled SBR compound and silica-filled SBR compound were investigated.The results showed that the cross-link density of SBR compounds decreased as the number of tension fatigue cycles increased，the cross-link density of silica-filled SBR compound was bigger than that of unfilled SBR compound；the conjugated diene structure was generated at the molecular chain-ends after tension fatigue；when the number of tension fatigue cycles increased，the physical properties of unfilled SBR compound and silica-filled SBR compound increased at first and then decreased；after tension fatigue，the elastic modulus of SBR compounds decreased and the tanδ value in rubbery temperature region increased. |
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