Numerical analysis of mixing performance of mixing section in pin-barrel single-screw extruder
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Jinnan Chen
,
Pan Dai
Abstract
Using the finite elements method, numerical simulations of the flow field of a rubber melt in the mixing sections of a conventional full-flight single-screw extruder and a pin-barrel single-screw extruder were carried out. Particle tracking analysis was used to statistically analyze the mixing state of the rubber melt in the mixing section with pin and that without pin. The mixing performance of both types of mixing section was quantitatively evaluated. The results show that the pins partially disorganize the particle trajectories, change the particle moving directions, and enhance the mixing performance. The particle residence time is longer in the mixing section with pins than in the mixing section with no pin, leading to better mixing in the former. The distributive mixing of particles in both types of mixing section was statistically analyzed. The pins increase the efficiency of stretching and the time-averaged efficiency of stretching, and hence the mixing efficiency. However, further increase in the number of pins does not necessarily enhance the mixing performance.
©2011 by Walter de Gruyter Berlin New York
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Articles in the same Issue
- Publisher’s Note
- A new start for Journal of Polymer Engineering
- News
- Implementing a new manuscript submission system
- Original Articles
- Model for the hydrodynamic dispersion of agglomerates incorporating thermoresponsive additives
- Preparation and properties of PLA/long alkyl chain modified multi-walled carbon nanotubes nanocomposites
- Insights into the slip flow phenomena encountered during in-mold coating (IMC) of plastic parts
- Physical properties of biaxially oriented PA6 film for simultaneous stretching and sequential processing
- Synthesis and solution behaviors of star hydrophobically modified acrylamide copolymers
- Melt temperature learning control of injection molding process based on CMAC neural network
- Numerical analysis of mixing performance of mixing section in pin-barrel single-screw extruder
- New process technology for high volume production of composites
