THE EFFECT OF PROCESS AIDS ON INTERFACIAL INSTABILITIES IN COEXTRUSION FLOWS: THEORETICAL AND EXPERIMENTAL INVESTIGATION

摘要

In this paper, the effect of process aids on the interfacial instabilities in coextrusion flows is investigated theoretically via viscoelastic FEM simulations as well as experimentally. Theoretically determined processing/materials rules according to which a stabilization effect with process aids can be achieved are compared and discussed with experimental results.