Rheology of Polydisperse non-Spherical Graphite Particles Suspended in Mineral Oil
Abstrak
We study the role of filler concentration and microphysics on the rheology of polydisperse flake-graphite particles suspended in Newtonian mineral oil. Under steady shear, our samples exhibit shear thinning and yielding behaviour is observed for volume fractions $φ> 0.18$. Time-temperature superposition was observed using an Arrhenius-type horizontal shift factor, giving a flow activation energy that is dependent on the graphite volume fraction, suggesting concentration-dependent contributions to relaxation processes in the suspensions. The flow curves are fitted by a constraint-based model, indicating that the flow behaviour is controlled by frictional and adhesive contacts, with the model suggesting that the adhesive stress is temperature dependent.
Topik & Kata Kunci
Penulis (8)
Th. Larsen
A. L. Søbye
J. R. Royer
W. C. K. Poon
T. Larsen
S. J. Andreasen
A. D. Drozdov
J. D. C. Christiansen
Akses Cepat
- Tahun Terbit
- 2022
- Bahasa
- en
- Sumber Database
- arXiv
- Akses
- Open Access ✓