2014
DOI: 10.1002/app.40806
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Molecular modeling approach to the prediction of mechanical properties of silica‐reinforced rubbers

Abstract: Recently, we have suggested a nanomechanical model for dissipative loss in filled elastomer networks in the context of the Payne effect. The mechanism is based on a total interfiller particle force exhibiting an intermittent loop, due to the combination of short-range repulsion and dispersion forces with a long-range elastic attraction. The sum of these forces leads, under external strain, to a spontaneous instability of "bonds" between the aggregates in a filler network and attendant energy dissipation. Here,… Show more

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Cited by 11 publications
(28 citation statements)
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“…[31]) indicates that there must be numerous small particle-particle separations as well -consistent with the small d-values quoted above. In recent work Hentschke and coworkers [32,33] have developed a model, which explains how such narrow-gapcontacts can reversibly open due to external stress (notice that 'reversibility' here is not meant in a thermodynamic sense, because opening and closing the contact is accompanied by energy dissipation). Another indication of the importance of these narrow-gap- Figure 3.…”
Section: Amplitude Dependence: Scaling Modelmentioning
confidence: 99%
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“…[31]) indicates that there must be numerous small particle-particle separations as well -consistent with the small d-values quoted above. In recent work Hentschke and coworkers [32,33] have developed a model, which explains how such narrow-gapcontacts can reversibly open due to external stress (notice that 'reversibility' here is not meant in a thermodynamic sense, because opening and closing the contact is accompanied by energy dissipation). Another indication of the importance of these narrow-gap- Figure 3.…”
Section: Amplitude Dependence: Scaling Modelmentioning
confidence: 99%
“…Here and in the following we presume that in this temperature range, which is important for controlling the rolling resistance, the dominant amplitude dependent loss mechanism is associated with the reversible opening of narrowgap-contacts between filler aggregates under strain. In two previous references [32,33] we have developed a model describing the energy dissipated by a single narrow-gap-contact, W, according to Equation (34): (34) where f is given by Equation (35): Hentschke -eXPRESS Polymer Letters Vol.11, No.4 (2017) 278-292 …”
Section: Dynamic Lossmentioning
confidence: 99%
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“…However, the latter determines the storage modulus in the limit of small strain amplitude and also the dissipation of elastic energy stored in the filler network, which largely determines the loss modulus. In future work, we plan to combine this algorithm with a recently developed model for aggregate–aggregate interaction based on the chemical structure of this interface …”
Section: Resultsmentioning
confidence: 99%
“…However, beyond a certain separation the bond is reversibly broken. It is worth mentioning that these simplistic interactions can be replaced with far more realistic potential forms based on the molecular modeling of the attendant interfaces …”
Section: Force Balance Approachmentioning
confidence: 99%