Simultaneous characterization of dielectric and dynamic-mechanical properties of elastomeric materials under static and dynamic load

Research output: Contribution to journal › Article › Research › peer review

Authors

  • Sahbi Aloui
  • Andrej Lang
  • Horst Deckmann
  • Manfred Klüppel
  • Ulrich Giese

External Research Organisations

  • Netzsch Gerätebau GmbH
  • German Institute of Rubber Technology (DIK e.V.)
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Details

Original languageEnglish
Article number123413
JournalPOLYMER
Volume215
Early online date13 Jan 2021
Publication statusPublished - 1 May 2021
Externally publishedYes

Abstract

The inner dynamics of carbon black filled elastomeric material under static and dynamic load are examined by means of simultaneous dielectric and dynamic-mechanical analysis at room temperature. The experiments are performed on styrene butadiene rubber (SBR) samples filled with carbon black well above the dielectric percolation threshold. By increasing the mechanical load, a decrease in the conductivity is found due to continuous mechanical damage to the filler network structure, which prevents the transport of charge carriers through the sample via the carbon black network. The Cole-Cole equation is applied to fit the experimental data. The resulting fit-parameters show different load dependence. The mechanical damage to the filler network makes the relaxation processes broader and leads to higher relaxation times, whereby the relaxation strength increases. This has been attributed to an increase in the correlation length of the filler network with increasing load.

Keywords

    Coupled measurement techniques, Dynamics of filler network and structural change, Relaxation behavior using Cole-Cole equations

ASJC Scopus subject areas

Cite this

Simultaneous characterization of dielectric and dynamic-mechanical properties of elastomeric materials under static and dynamic load. / Aloui, Sahbi; Lang, Andrej; Deckmann, Horst et al.
In: POLYMER, Vol. 215, 123413, 01.05.2021.

Research output: Contribution to journal › Article › Research › peer review

Aloui S, Lang A, Deckmann H, Klüppel M, Giese U. Simultaneous characterization of dielectric and dynamic-mechanical properties of elastomeric materials under static and dynamic load. POLYMER. 2021 May 1;215:123413. Epub 2021 Jan 13. doi: 10.1016/j.polymer.2021.123413, 10.1016/j.polymer.2021.123686
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abstract = "The inner dynamics of carbon black filled elastomeric material under static and dynamic load are examined by means of simultaneous dielectric and dynamic-mechanical analysis at room temperature. The experiments are performed on styrene butadiene rubber (SBR) samples filled with carbon black well above the dielectric percolation threshold. By increasing the mechanical load, a decrease in the conductivity is found due to continuous mechanical damage to the filler network structure, which prevents the transport of charge carriers through the sample via the carbon black network. The Cole-Cole equation is applied to fit the experimental data. The resulting fit-parameters show different load dependence. The mechanical damage to the filler network makes the relaxation processes broader and leads to higher relaxation times, whereby the relaxation strength increases. This has been attributed to an increase in the correlation length of the filler network with increasing load.",
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AU - Aloui, Sahbi

AU - Lang, Andrej

AU - Deckmann, Horst

AU - Klüppel, Manfred

AU - Giese, Ulrich

N1 - Funding Information: The dynamic-mechanical and dielectric analyzer DiPLEXOR® 500 N was developed within the ZIM project KF2473302DF0 in cooperation with Prof. M. Wilhelm from Karlsruhe Institute of Technology.

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N2 - The inner dynamics of carbon black filled elastomeric material under static and dynamic load are examined by means of simultaneous dielectric and dynamic-mechanical analysis at room temperature. The experiments are performed on styrene butadiene rubber (SBR) samples filled with carbon black well above the dielectric percolation threshold. By increasing the mechanical load, a decrease in the conductivity is found due to continuous mechanical damage to the filler network structure, which prevents the transport of charge carriers through the sample via the carbon black network. The Cole-Cole equation is applied to fit the experimental data. The resulting fit-parameters show different load dependence. The mechanical damage to the filler network makes the relaxation processes broader and leads to higher relaxation times, whereby the relaxation strength increases. This has been attributed to an increase in the correlation length of the filler network with increasing load.

AB - The inner dynamics of carbon black filled elastomeric material under static and dynamic load are examined by means of simultaneous dielectric and dynamic-mechanical analysis at room temperature. The experiments are performed on styrene butadiene rubber (SBR) samples filled with carbon black well above the dielectric percolation threshold. By increasing the mechanical load, a decrease in the conductivity is found due to continuous mechanical damage to the filler network structure, which prevents the transport of charge carriers through the sample via the carbon black network. The Cole-Cole equation is applied to fit the experimental data. The resulting fit-parameters show different load dependence. The mechanical damage to the filler network makes the relaxation processes broader and leads to higher relaxation times, whereby the relaxation strength increases. This has been attributed to an increase in the correlation length of the filler network with increasing load.

KW - Coupled measurement techniques

KW - Dynamics of filler network and structural change

KW - Relaxation behavior using Cole-Cole equations

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