The influence of recycling on the viscosity of polyamide 6 and a general modeling approach

The multiple processing and use of regrind material of plastics are widely used in the plastics processing industry. The subsequent changes in material characteristics, certainly in the viscosity of the polymer melt, have been analyzed and are well known. However, to quantify the changing viscosity,...

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Bibliographic Details
Published in:Progress in rubber, plastics and recycling technology plastics and recycling technology, 2018-08, Vol.34 (3), p.158-167
Main Authors: Grümer, Benjamin, Hopmann, Christian
Format: Article
Language:English
Subjects:
Authorship
Influence
Injection molding
Modelling
Polyamide resins
Polymer blends
Polymer melts
Polymers
Processing industry
Product life cycle
Quality
Raw materials
Recycling
Rheological properties
Rheology
Scrap
Temperature
Viscosity
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Summary:The multiple processing and use of regrind material of plastics are widely used in the plastics processing industry. The subsequent changes in material characteristics, certainly in the viscosity of the polymer melt, have been analyzed and are well known. However, to quantify the changing viscosity, a general modeling approach is necessary using a low quantity of lab measurements. For the example of a polyamide 6, rheological measurements have been performed and a general modeling approach for the viscosity based on the Carreau model has been developed. The verification of the modeling was successfully proven by comparing additional viscosity measurements with model prediction results.
ISSN:1477-7606
1478-2413
DOI:10.1177/1477760618798427