The properties of polymer blends are determined to a decisive extent by the morphological structure of the polymer combinations employed. The layout of extruders thus calls for models to calculate the estimated morphology development over the length of the extruder screws in the melt-conveying section. Since the most significant morphological changes are observed in the melting section, however, it is also necessary for the morphology formation and development to be analyzed in this section of the extruder. The melting process of binary material combinations is thus important too. In the context of this research, experimental investigations were conducted using polypropylene/polyamide 6 (PP/PA6) - blends. In the tests, the degree of melting and the morphology development were determined over different screws and compared with calculations. In order to analyze a range of relevant influences, the extruder size, screw configuration, speed, weight components and also the viscosity ratio were varied by using different PP types.
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