Contraction and Capillary Flow of a Carbon Black Filled Rubber Compound

Sebastian Stieger, Roman Christopher Kerschbaumer, Evan Mitsoulis, Michael Fasching, Gerald Berger-Weber, Walter Friesenbichler, Joachim Sunder

    Publikation: Beitrag in FachzeitschriftArtikelForschungBegutachtung

    5 Zitate (Scopus)


    Highly filled rubber compounds exhibit a unique rheological
    behavior, which is affected by its filler–filler and filler–matrix
    interactions leading to pronounced nonlinear viscoelasticity.
    The necessity to consider these characteristics in rheological
    testing and modeling, adds further complexity providing
    universally valid numerical descriptions. In the present
    study, the pressure driven contraction and capillary flow of
    a carbon black filled hydrogenated acrylonitrile–butadiene
    rubber compound is studied both experimentally and
    numerically. Rheological testing indicates no pronounced
    slippage at the wall but a shear sensitive plug flow at
    the centerline. The viscoelastic Kaye-Bernstein–Kearsley–
    Zapas/Wagner, the viscoplastic Herschel–Bulkley and the
    viscous power-law models are used in computational fluid
    dynamic simulations aiming to predict measured pressure
    drops in an orifice and various capillary dies. Viscoelastic
    modeling is found of particular importance describing contraction
    flow dominated areas, whereas viscous models are
    able to predict pressure drops of capillary flows well.
    Seiten (von - bis)32-43
    FachzeitschriftPolymer engineering and science
    PublikationsstatusVeröffentlicht - 23 Okt. 2019

    Bibliographische Notiz

    Funding Information:
    This research work was supported by the Austrian Research Promotion Agency (FFG) as part of the “RubExject II” project (corresponding project number 855873) and the company partners SKF Sealing Solutions Austria GmbH, Judenburg, Austria; IB Steiner, Spielberg, Austria; and ELMET Elastomere Produktions‐ und Dienstleistungs‐GmbH, Oftering, Austria. The authors thank DI Dr. Ivica Duretek, DI Stephan Schuschnigg, and DI Dr. Matthias Haselmann for their respective contributions.

    Publisher Copyright:
    © 2019 The Authors. Polymer Engineering & Science published by Wiley Periodicals, Inc. on behalf of Society of Plastics Engineers.

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