Details
| Original language | English |
|---|---|
| Pages (from-to) | 35-43 |
| Number of pages | 9 |
| Journal | KGK Kautschuk Gummi Kunststoffe |
| Volume | 72 |
| Issue number | 3 |
| Publication status | Published - Mar 2019 |
| Externally published | Yes |
Abstract
Employing a high-pressure capillary viscometer, this study investigates the flow behavior of rubber compounds as a function of compound viscosity. Test series are carried out with EPDM rubbers and additionally, the compound viscosity of a low-molecular-weight EPDM is selectively varied by admixing different concentrations of carbon black or oil so as to shed light on the influence of recipe-dependent viscosity on the wall-slip effect. The results show that the wall-slip effect increases as the recipe-dependent viscosity and the molecular weight of the raw polymer rise and that the critical wall shear stress indicating supercritical flow behavior is achieved even at lower shear rates.
Keywords
- Compound viscosity, EPDM, Highpressure capillary viscometer (HCV), Rheology, Rubber extrusion, Slip-stick, Wall slip
ASJC Scopus subject areas
- Engineering(all)
- Mechanical Engineering
- Materials Science(all)
- Polymers and Plastics
- Engineering(all)
- Industrial and Manufacturing Engineering
- Materials Science(all)
- Materials Chemistry
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In: KGK Kautschuk Gummi Kunststoffe, Vol. 72, No. 3, 03.2019, p. 35-43.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Wall-slip effects and their dependence on the recipe- and molecular-weight-induced compound viscosity
AU - Klie, B.
AU - Schubert, E.
AU - Giese, U.
PY - 2019/3
Y1 - 2019/3
N2 - Employing a high-pressure capillary viscometer, this study investigates the flow behavior of rubber compounds as a function of compound viscosity. Test series are carried out with EPDM rubbers and additionally, the compound viscosity of a low-molecular-weight EPDM is selectively varied by admixing different concentrations of carbon black or oil so as to shed light on the influence of recipe-dependent viscosity on the wall-slip effect. The results show that the wall-slip effect increases as the recipe-dependent viscosity and the molecular weight of the raw polymer rise and that the critical wall shear stress indicating supercritical flow behavior is achieved even at lower shear rates.
AB - Employing a high-pressure capillary viscometer, this study investigates the flow behavior of rubber compounds as a function of compound viscosity. Test series are carried out with EPDM rubbers and additionally, the compound viscosity of a low-molecular-weight EPDM is selectively varied by admixing different concentrations of carbon black or oil so as to shed light on the influence of recipe-dependent viscosity on the wall-slip effect. The results show that the wall-slip effect increases as the recipe-dependent viscosity and the molecular weight of the raw polymer rise and that the critical wall shear stress indicating supercritical flow behavior is achieved even at lower shear rates.
KW - Compound viscosity
KW - EPDM
KW - Highpressure capillary viscometer (HCV)
KW - Rheology
KW - Rubber extrusion
KW - Slip-stick
KW - Wall slip
UR - http://www.scopus.com/inward/record.url?scp=85063578550&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:85063578550
VL - 72
SP - 35
EP - 43
JO - KGK Kautschuk Gummi Kunststoffe
JF - KGK Kautschuk Gummi Kunststoffe
SN - 0948-3276
IS - 3
ER -