A NEW DISPERSIVE AND DISTRIBUTIVE STATIC MIXER FOR THE COMPOUNDING OF HIGHLY VISCOUS MATERIALS

摘要

In the compounding of polymers, static mixers are commonly used for distributive mixing. However, successful compounding generally requires both distributive and dispersive mixing; where the most difficult mixing involves the dispersion of materials having widely different viscosities. The best method to accomplish successful dispersive mixing is to expose the material to extensional flow. Furthermore, in terms of power consumption, extensional flows are far superior to the shear-type flows found in most mixing systems. This paper presents a new dispersive and distributive static mixer (DDSM), which exposes the fluid element to continual extensional flow for enhanced mixing.