Abstract
The relationship between glass-transition temperature T g , plateau modulus G 0N , microstructure of different polymers (high cis-1,4-BR, NR, butyl rubber and various styrene-butadiene copolymers) and the wet skid resistance (WSR) of the corresponding filled treat compounds were investigated. Additionally, the relation between WSR and rolling resistance of vulcanizates was investigated. Both T g and G 0N give only a poor correlation to the values of WSR. A good correlation is reached relating the WSR of elastomers to their total viscoelastic behavior in the glass-rubber transition zone. REalistic damping curves of the polymers in this region can be obtained within a bead-spring model of a tree-like entanglement network with a certain number of subchains. It is concluded that the high-frequency dependence of the loss curve is related to the local chain dynamics, whereas the cooperative large scale Rouse-like motion of many entangled strands dominates in the low-frequency region of the loss curve. In the surrounding of the loss maximum act both intra- and intermolecular correlations.
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© 1992 Dr. Dietrich Steinkopff Verlag GmbH & Co. KG
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Heinrich, G. (1992). The dynamics of tire tread compounds and their relationship to wek skid behavior. In: Physics of Polymer Networks. Progress in Colloid & Polymer Science, vol 90. Steinkopff. https://doi.org/10.1007/BFb0115472
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DOI: https://doi.org/10.1007/BFb0115472
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Print ISBN: 978-3-7985-0914-6
Online ISBN: 978-3-7985-1679-3
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