TY - JOUR
T1 - Rheological Behaviour of Highly Filled Materials for Injection Moulding and Additive Manufacturing
T2 - Effect of Particle Material and Loading
AU - Bek, Marko
AU - Gonzalez-Gutierrez, Joamin
AU - Kukla, Christian
AU - Pušnik Crešnar, Klementina
AU - Maroh, Boris
AU - Slemenik Perše, Lidija
PY - 2020/11/2
Y1 - 2020/11/2
N2 - Within this paper, we are dealing with a mixture of thermoplastic polymer that is filled with inorganic fillers at high concentrations up to 60 vol.%. A high number of particles in the compound can substantially change the rheological behaviour of the composite and can lead to problems during processing in the molten state. The rheological behaviour of highly filled materials is complex and influenced by many interrelated factors. In the present investigation, we considered four different spherical materials: steel, aluminium alloy, titanium alloy and glass. Particles with similar particle size distribution were mixed with a binder system at different filling grades (30–60 vol.%). We showed that the rheological behaviour of highly filled materials is significantly dependent on the chemical interactions between the filler and matrix material. Moreover, it was shown that the changes of the particle shape and size during processing lead to unexpected rheological behaviour of composite materials as it was observed in the composites filled with glass beads that broke at high contents during processing.
AB - Within this paper, we are dealing with a mixture of thermoplastic polymer that is filled with inorganic fillers at high concentrations up to 60 vol.%. A high number of particles in the compound can substantially change the rheological behaviour of the composite and can lead to problems during processing in the molten state. The rheological behaviour of highly filled materials is complex and influenced by many interrelated factors. In the present investigation, we considered four different spherical materials: steel, aluminium alloy, titanium alloy and glass. Particles with similar particle size distribution were mixed with a binder system at different filling grades (30–60 vol.%). We showed that the rheological behaviour of highly filled materials is significantly dependent on the chemical interactions between the filler and matrix material. Moreover, it was shown that the changes of the particle shape and size during processing lead to unexpected rheological behaviour of composite materials as it was observed in the composites filled with glass beads that broke at high contents during processing.
KW - highly-filled polymers
KW - Binder
KW - Rheology
KW - FTIR-spectroscopy
KW - Highly filled materials
KW - Binder-filler interaction
KW - Polypropylene binder
KW - ATR-FTIR
KW - Fused filament fabrication
KW - XPS
KW - Particle–particle interaction
KW - Shear rheology
UR - http://www.scopus.com/inward/record.url?scp=85096023858&partnerID=8YFLogxK
U2 - https://doi.org/10.3390/app10227993
DO - https://doi.org/10.3390/app10227993
M3 - Article
SN - 2076-3417
VL - 10
SP - 1
EP - 23
JO - Applied Sciences : open access journal
JF - Applied Sciences : open access journal
IS - 22
M1 - 7993
ER -