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PP/CNT composites were prepared by means of an ultrasonic twin extruder with three screw configurations at ultrasonic amplitudes up to 13 μm to compare their efficiency in dispersing CNT in PP. Using these screw configurations, the pressure in the ultrasonic treatment zone was varied in order to elucidate the effect of pressure on ultrasonic cavitation behavior in PP and PP/CNT composites. Rheological...
The damage of glass fibers at various conditions was investigated in a corotating twin screw extruder by varying viscosity, screw speed, and screw configuration. Increasing the screw speed and melt matrix viscosity were found to increase the extent of fiber breakage. Based on the experimental data and Euler buckling theory, a composite modular kinetic model to describe glass fiber breakage was developed...
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