EFFECT OF INCORPORATING STARCH/SILICA COMPOUND FILLERS INTO UNCURED SSBR ON ITS DYNAMIC RHEOLOGICAL PROPERTIES
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EFFECT OF INCORPORATING STARCH/SILICA COMPOUND FILLERS INTO UNCURED SSBR ON ITS DYNAMIC RHEOLOGICAL PROPERTIES
Vol. 26, Issue 6, Pages: 751-757(2008)
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Published:20 November 2008
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Hong Li a, c, Yi-hu Song a. EFFECT OF INCORPORATING STARCH/SILICA COMPOUND FILLERS INTO UNCURED SSBR ON ITS DYNAMIC RHEOLOGICAL PROPERTIES[J]. 2008, 26(6): 751-757.
DOI:
Hong Li a, c, Yi-hu Song a. EFFECT OF INCORPORATING STARCH/SILICA COMPOUND FILLERS INTO UNCURED SSBR ON ITS DYNAMIC RHEOLOGICAL PROPERTIES[J]. 2008, 26(6): 751-757.DOI:
EFFECT OF INCORPORATING STARCH/SILICA COMPOUND FILLERS INTO UNCURED SSBR ON ITS DYNAMIC RHEOLOGICAL PROPERTIES
The dynamic rheological properties of a composite composed of solution-polymerized styrene butadiene rubber (SSBR) filled with starch/silica (SiO2) compound fillers were studied by means of temperature
frequency and strain sweeps
respectively
and the influence of the starch content in the compound fillers (SCCF) on the rheological behaviors was discussed. It is found from frequency sweeps that a maximum of loss tangent (tanδ) appears at 20 rad/s
which is independent of SCCF. G’ of the composites decreases whereas tanδ and critical strain (γc) of Payne effect increase with increasing SCCF. The reasons for these are believed to be that both SiO2 and starch could form filler networks due to interaction of hydrogen bounding between them
and the interactions between SiO2 and SSBR are stronger than those between starch and SSBR. Moreover
increasing SCCF in the compound fillers is in favor of improving the stability of the filler networks. Furthermore
tanδ values at 0oC and 60oC representing the properties for the wet traction and the rolling resistance of SSBR composites respectively can be improved by partial replacing SiO2 with starch. However
the reinforcement effect of starch to SSBR is weaker than that of SiO2 due to starch agglomeration.
Abstract
The dynamic rheological properties of a composite composed of solution-polymerized styrene butadiene rubber (SSBR) filled with starch/silica (SiO2) compound fillers were studied by means of temperature
frequency and strain sweeps
respectively
and the influence of the starch content in the compound fillers (SCCF) on the rheological behaviors was discussed. It is found from frequency sweeps that a maximum of loss tangent (tanδ) appears at 20 rad/s
which is independent of SCCF. G’ of the composites decreases whereas tanδ and critical strain (γc) of Payne effect increase with increasing SCCF. The reasons for these are believed to be that both SiO2 and starch could form filler networks due to interaction of hydrogen bounding between them
and the interactions between SiO2 and SSBR are stronger than those between starch and SSBR. Moreover
increasing SCCF in the compound fillers is in favor of improving the stability of the filler networks. Furthermore
tanδ values at 0oC and 60oC representing the properties for the wet traction and the rolling resistance of SSBR composites respectively can be improved by partial replacing SiO2 with starch. However
the reinforcement effect of starch to SSBR is weaker than that of SiO2 due to starch agglomeration.
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