Contraction and Capillary Flow of a Carbon Black Filled Rubber Compound
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In: Polymer engineering and science, Vol. 60.2020, No. 1, 23.10.2019, p. 32-43.
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TY - JOUR
T1 - Contraction and Capillary Flow of a Carbon Black Filled Rubber Compound
AU - Stieger, Sebastian
AU - Kerschbaumer, Roman Christopher
AU - Mitsoulis, Evan
AU - Fasching, Michael
AU - Berger-Weber, Gerald
AU - Friesenbichler, Walter
AU - Sunder, Joachim
N1 - Publisher Copyright: © 2019 The Authors. Polymer Engineering & Science published by Wiley Periodicals, Inc. on behalf of Society of Plastics Engineers.
PY - 2019/10/23
Y1 - 2019/10/23
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85074578237&partnerID=8YFLogxK
U2 - 10.1002/pen.25256
DO - 10.1002/pen.25256
M3 - Article
VL - 60.2020
SP - 32
EP - 43
JO - Polymer engineering and science
JF - Polymer engineering and science
SN - 1548-2634
IS - 1
ER -