Mixers internal, high intensity

Fig. 10.5 Photograph and cross-sectional schematic representation of a Banbury high-intensity internal batch mixer. The photograph shows the two elements of the drive the electrical motor and the gear reducer. Their large size is due to the very large power requirements of the mixer. [Photograph courtesy of the Farrel Company, Ansonia, CT.]...

Thus, bulk temperature measurements may not properly reflect actual stock temperatures. This is the case in screw extruders where very high local temperatures can occur. The same holds true for high intensity internal mixers. In such devices, pure mechanical degradation is unlikely to occur. Therefore, degradation processes in polymer melts involving mechanical stresses tend to be rather complex. 

High-intensity internal mixers are used for incorporating particulate additives into most polymer types, including thermoplastics, thermosets and rubbers. Limitations, such as the manual intervention generally encountered with two-roll mills, can be overcome, whilst maintaining a significant dispersive and distributive mixing capability. 

FIGURE 6.36 (a) Typical Banbury high-intensity internal mixer,... 

Polystyrene family GPS, HIPS, SAN, ABS Solid concentrates, some intensive blends Internal mixers, continuous mixers, multiple-screw extruders, high-speed dry blenders... 

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