| Effect of Storage Time on Extrusion Rheological Behavior in Carbon Black Filled SSBR/BR Blends |
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| DOI： |
| Key Words: carbon black；SSBR；BR；blend；storage time；extrusion rheological behavior |
| Author Name | Affiliation | | WU Wenjie | Qingdao University of Science and Technology | | SUN Chong | Qingdao University of Science and Technology | | ZHANG Ping | Qingdao University of Science and Technology |
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| Abstract: |
| Effect of storage time of SSBR/BR filled with carbon black on extrusion rheological behavior was investigated. The results showed that，the bound rubber content，relaxation time and Mooney viscosity increased with the extending of storage time，and they had similar changing characteristics. The Payne effect and the storage modulus of the compound also increased with the extending of storage time，which indicated that the carbon black aggregates agglomerated to some degree in the storage process of the compound. The shearing viscosity increased slightly with the extending of storage time. The entrance pressure drop increased with the extending of storage time，and the effect of temperature was significant. The zigzag defects appeared on the surface of extruded compound when the storage time of the compound reached 48 h. The sample with 24 h of storage time had the minimum extrusion swell behavior. As for carbon black filled SSBR/BR system，the best storage time was 24 h. |
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