Influences of Feed Rate and Screw Speed

Screw configuration S3 was chosen to examine how feed rate and screw speed may affect the morphology development of the reactive blend. In order to better reveal the effects of these two processing variables, the barrel temperature profile was voluntarily chosen as follows 220 °C for the first part of the extruder between the hopper and port 1 and 240 °C for the remaining extruder length. Table 6.5 shows the particle sizes of the PA6 phase along the screw axis at three different locations (port 1, port 2 and die exit) for four different combinations of feed rate and screw speed. The corresponding torque values of the screw shafts are also listed. 

PA6 pellets. However, they did not have any impact on the ultimate size of the PA6 phase as long as it was molten inside the extruder. 

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Table 6.5 Influences of Feed Rate and Screw Speed on the Morphology Development of the PP -I- PP-g-MA/PA6 (60 -I- 20/20) Reactive Blend. After Cartier and Hu [44]...

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