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A study of relationships between state-of-mix, rheological properties, dynamic properties, and bound rubber content

✍ Scribed by C. Sirisinha; W. Sittichokchuchai

Publisher
John Wiley and Sons
Year
2000
Tongue
English
Weight
142 KB
Volume
76
Category
Article
ISSN
0021-8995

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✦ Synopsis

The relationships between state-of-mix, rheologic properties, dynamic properties, and bound rubber content in N330 carbon black filled styrene butadiene rubber (SBR) were investigated. Shear viscosities measured from both Mooney viscometer and capillary rheometer decrease with increasing state-of-mix. By contrast, the stress relaxation determined from the Mooney relaxation viscometer (PR80) decreases with an increase in state-of-mix. In addition, glass transition temperature (T g ) is not strongly affected by a change in state-of-mix, whereas the magnitude of damping peak (tan ␦) increases with state-of-mix. Bound rubber content appears to decrease as the state-of-mix increases. The concept of a change in an amount of immobilized rubber can be used to explain the results obtained.

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