Melting of PP/PA6 Polymer Blends in Single Screw Extruders – An Experimental Study

S.M. Cunha; António Gaspar-Cunha; José A. Covas

doi:10.4028/www.scientific.net/MSF.587-588.505

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HomeMaterials Science ForumMaterials Science Forum Vols. 587-588Melting of PP/PA6 Polymer Blends in Single Screw...

Melting of PP/PA6 Polymer Blends in Single Screw Extruders – An Experimental Study

Abstract:

A prototype modular single screw extruder fitted with a screw extracting device is used to monitor melting of an immiscible polymer blend (PP/PA6, with different weight ratios) in this widely used processing equipment. As anticipated, the phenomena observed are much more complex than those involved in extruding PP or PA6, when the well known Maddock/Tadmor mechanism is valid. Consequently a hybrid melting mechanism, involving Maddock/Tadmor and Dispersive melting sequences, is proposed.