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Article Dans Une Revue Rubber Chemistry and Technology Année : 2019

The payne effect: primarily polymer-related or filler-related phenomenon?

Nadhatai Warasitthinon
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Anne-Caroline Genix
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Michael Sztucki
Julian Oberdisse
Christopher G. Robertson
  • Fonction : Auteur

Résumé

The hysteretic softening at small dynamic strains (Payne effect) related to the rolling resistance and viscoelastic losses of tires was studied as a function of particle size, filler volume fraction, and temperature for carbon black (CB) reinforced uncrosslinked styrene-butadiene rubber (SBR) and a paste-like material composed of CB-filled paraffin oil. The low strain limit for dynamic storage modulus was found to be remarkably similar for CB-filled oil compared to CB-filled SBR. Small-angle X-ray scattering (SAXS) measurements on the simple composites and detailed data analysis confirmed that the aggregate structures and nature of filler branching/networking of carbon black were virtually identical within oil compared to the high molecular weight polymer matrix. The combined dynamic rheology and SAXS results provide clear evidence that the deformation-induced breaking (unjamming) of the filler network – characterized by filler-filler contacts that are percolated throughout the material – is the main cause for the Payne effect. However, the polymer matrix does play a secondary role as demonstrated by a reduction in Payne effect magnitude with increasing temperature for the CB-reinforced rubber, which was not observed to a significant extent for the oil-CB system.
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Dates et versions

hal-02566982 , version 1 (09-07-2020)

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Nadhatai Warasitthinon, Anne-Caroline Genix, Michael Sztucki, Julian Oberdisse, Christopher G. Robertson. The payne effect: primarily polymer-related or filler-related phenomenon?. Rubber Chemistry and Technology, 2019, 92 (4), pp.599-611. ⟨10.5254/rct.19.80441⟩. ⟨hal-02566982⟩
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