| Study on Extrudate Distortion of Solution Polymerized Styrene-Butadiene Rubber |
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| DOI： |
| Key Words: solution polymerized styrene－butadiene rubber；carbon black；compound；rheological property；extrudate distortion |
| Author Name | Affiliation | | ZHANG Hao | Qingdao University of Science and Technology | | DONG Bin | Qingdao University of Science and Technology | | SUN Xianru | Qingdao University of Science and Technology | | WU Qiye | Qingdao University of Science and Technology |
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| Abstract: |
| The extrudate distortion behavior and its mechanism of the raw rubber and compound of solution polymerized styrene-butadiene rubbers （SSBR-T2003 and SSBR-2305） having different structure were investigated.In raw rubber extrusion，extrudate distortion occurred for both SSBR-T2003 and SSBR-2305 and the distortion of SSBR-2305 was worse due to higher molecular weight and branched structure.The distortion was caused by unstable extensional flow at the die entrance.With the addition of carbon black，the rheological property of compound could be improved，the entropy elasticity of compound was reduced and the flow field at the die entrance was stabilized.Therefore，the overall distortion was reduced.The smooth surface of extruded SSBR-2305 compound could also be obtained under high shear speed. |
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