Influence of Melt Compounding on Blast Furnace Slag Filled PP Compounds: A Comparative Study
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In: International polymer processing, Vol. 32.2017, No. 4, 31.07.2017, p. 446-454.
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TY - JOUR
T1 - Influence of Melt Compounding on Blast Furnace Slag Filled PP Compounds
T2 - A Comparative Study
AU - Mostafa, Abdelhamid
AU - Pacher, Gernot
AU - Lucyshyn, Thomas
AU - Holzer, Clemens
AU - Krischey, Elke
AU - Flachberger, Helmut
AU - Fritz, Bertram
AU - Laske, Stephan
PY - 2017/7/31
Y1 - 2017/7/31
N2 - In the current study, an assessment of the melt-compoundingapproach upon the behavior of blast furnace slag (BFS) filledpolypropylene (PP) is reported. Two melt-compounding tech-nologies are compared in terms of thermodynamic considera-tions as well as final behavior of the produced compounds.For this comparison, three PP-BFS formulations are intro-duced, where non-treated BFS is melt-mixed with PP via (1)internal lab mixer (IM) and (2) co-rotating twin-screw com-pounder (TSC). PP-BFS compounds from both processes areformed into plates via compression molding, characterizedand tested for rheological, thermal and mechanical behavior.Processing parameters were evaluated for both processessuch as specific shear work, residence time and shear rates.In addition, the rheological, thermal and mechanical behaviorof comparable compounds are evaluated. The calculated spe-cific shear work values for IM and TSC are 0.15 and0.1 kW·h·kg–1. Calculated residence time for TSC is 55 s.Regarding the rheological behavior, it was found that meltmixing via both technologies did not show major differencesin complex viscosity or storage- and loss moduli values. DSCfindings show that crystallization and melting temperaturesof IM- and TSC formulations are comparable. Decreasedstrain values are noticed for TSC compounds, while tensilemodulus is found to be independent of process variation.
AB - In the current study, an assessment of the melt-compoundingapproach upon the behavior of blast furnace slag (BFS) filledpolypropylene (PP) is reported. Two melt-compounding tech-nologies are compared in terms of thermodynamic considera-tions as well as final behavior of the produced compounds.For this comparison, three PP-BFS formulations are intro-duced, where non-treated BFS is melt-mixed with PP via (1)internal lab mixer (IM) and (2) co-rotating twin-screw com-pounder (TSC). PP-BFS compounds from both processes areformed into plates via compression molding, characterizedand tested for rheological, thermal and mechanical behavior.Processing parameters were evaluated for both processessuch as specific shear work, residence time and shear rates.In addition, the rheological, thermal and mechanical behaviorof comparable compounds are evaluated. The calculated spe-cific shear work values for IM and TSC are 0.15 and0.1 kW·h·kg–1. Calculated residence time for TSC is 55 s.Regarding the rheological behavior, it was found that meltmixing via both technologies did not show major differencesin complex viscosity or storage- and loss moduli values. DSCfindings show that crystallization and melting temperaturesof IM- and TSC formulations are comparable. Decreasedstrain values are noticed for TSC compounds, while tensilemodulus is found to be independent of process variation.
U2 - 10.3139/217.3365
DO - 10.3139/217.3365
M3 - Article
VL - 32.2017
SP - 446
EP - 454
JO - International polymer processing
JF - International polymer processing
SN - 0930-777X
IS - 4
ER -