Next Article in Journal
Antibacterial Properties of Triethoxysilylpropyl Succinic Anhydride Silane (TESPSA) on Titanium Dental Implants
Next Article in Special Issue
A Strategy for Problem Solving of Filling Imbalance in Geometrically Balanced Injection Molds
Previous Article in Journal
A Holey Graphene Additive for Boosting Performance of Electric Double-Layer Supercapacitors
Previous Article in Special Issue
Optimization for Starve Fed/Flood Fed Single Screw Extrusion of Polymeric Materials
Open AccessArticle

Enhancing Mixing and Thermal Management of Recycled Carbon Composite Systems by Torsion-Induced Phase-to-Phase Thermal and Molecular Mobility

1
College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, Shandong Province, China
2
Centre for Biocomposites and Biomaterial Processing, Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, ON M5S 3B3, Canada
3
College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
*
Author to whom correspondence should be addressed.
Polymers 2020, 12(4), 771; https://doi.org/10.3390/polym12040771
Received: 27 February 2020 / Revised: 26 March 2020 / Accepted: 27 March 2020 / Published: 1 April 2020
A novel torsion screw has been proposed to resolve the inadequate control of mass transfer and the thermal management of two component polymer blends and their carbon fiber composites. The novel torsional screw distinctly introduced radial flow in the torsion screw channel, which is a significant improvement over the flow pattern developed by the conventional screw. The heat transfer and mixing behavior of melt mixtures are enhanced by adapting screws with torsion elements compared with the traditional screw elements. Heat transfer efficacy in the polypropylene–polystyrene bi-phasic extrusion process improved with the increase in torsion element numbers. An increased number of newly designed torsional elements also improved the dispersion of minor phase in bi-phase polypropylene–polystyrene composition and their carbon fiber composites. The unique flow pattern induced by the torsion elements shows a synergistic effect on the melt-phase mass flow and the thermal flow field facilitating phase-to-phase thermal and molecular mobility and enhanced fiber orientation, crystallinity and mechanical properties of composite made from recycled carbon fiber/polypropylene. Microtomographs of recycled carbon fiber demonstrated the extraordinary ability of a torsion screw element to orient carbon fiber in both axial and radial directions. View Full-Text
Keywords: field synergy; torsional flow; heat and mass transfer; recycled carbon composites; mixing and thermal management field synergy; torsional flow; heat and mass transfer; recycled carbon composites; mixing and thermal management
Show Figures

Graphical abstract

MDPI and ACS Style

Jian, R.; Shi, Z.; Liu, H.; Yang, W.; Sain, M. Enhancing Mixing and Thermal Management of Recycled Carbon Composite Systems by Torsion-Induced Phase-to-Phase Thermal and Molecular Mobility. Polymers 2020, 12, 771.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop