New Insights into the Morphology of Silica and Carbon Black Based on Their Different Dispersion Behavior

Polymers
Fabian GrunertAnke Blume

Abstract

Precipitated silica in combination with bifunctional organosilanes almost fully replaces currently the commonly used carbon black fillers in modern passenger car tire tread compounds to improve tire properties such as wet traction (safety) and rolling resistance (fuel consumption). However, it is still challenging to reach a sufficient level of abrasion resistance (service life). An optimum macrodispersion quality of the silica is a fundamental precondition for an optimum abrasion resistance. This goal can be reached by the development of new tailor-made highly dispersible silica grades. In order to achieve this, it is essential to be aware of the analytical silica parameters, which affect the dispersion process. One of these parameters known from carbon black is the structure of the filler. To gain deeper insights into the in-rubber dispersibility of the silica, the structure was investigated by two different methods, the DOA measurement and the void volume measurement. The results were correlated to the in-rubber macrodispersion. In contrast to carbon black filled compounds, no sufficient correlation of the structure with the macrodispersion could be found for the silica-filled compounds. Therefore, it was concluded that the ...Continue Reading

References

Sep 17, 1998·Sportverletzung Sportschaden : Organ der Gesellschaft für Orthopädisch-Traumatologische Sportmedizin·H HimmelreichW Banzer
Nov 16, 2005·Langmuir : the ACS Journal of Surfaces and Colloids·Tadanori KogaTakeji Hashimoto

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Methods Mentioned

BETA
X-ray
Infrared Spectroscopy
transmission electron microscopy

Software Mentioned

COAN
OAN

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