| 停放时间对炭黑填充溶聚丁苯橡胶/顺丁橡胶并用胶挤出流变特性的影响 |
| Effect of Storage Time on Extrusion Rheological Behavior in Carbon Black Filled SSBR/BR Blends |
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| DOI： |
| 中文关键词: 炭黑 溶聚丁苯橡胶 顺丁橡胶 并用胶 停放时间 挤出流变特性 |
| 英文关键词: carbon black SSBR BR blend storage time extrusion rheological behavior |
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| 中文摘要: |
| 研究停放时间对炭黑填充溶聚丁苯橡胶（SSBR）/顺丁橡胶（BR）并用胶挤出流变特性的影响。结果表明：结合胶质量分数、应力松弛时间和门尼粘度均随停放时间的延长而增大，且变化规律相似；混炼胶的Payne效应和储能模量均随停放时间的延长而增大，表明炭黑聚集体在混炼胶停放过程中出现一定程度团聚；混炼胶的挤出粘度随着停放时间的延长略有增大；入口压力降随着停放时间的延长显著增大，且温度的影响较为明显；停放48 h后，混炼胶的挤出物均出现较为明显的锯齿形瑕疵，停放24 h混炼胶的挤出胀大比最小。对炭黑填充SSBR/BR并用胶体系而言，其最佳的停放时间为24 h。 |
| 英文摘要: |
| 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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