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Edeleva M, Tang D, Van Waeleghem T, Marchesini FH, Cardon L, D’hooge DR. Testing the PTT Rheological Model for Extrusion of Virgin and Composite Materials in View of Enhanced Conductivity and Mechanical Recycling Potential. Processes (Basel) 2021; 9:1969. [DOI: 10.3390/pr9111969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
One of the challenges for the manufacturing processes of polymeric parts is the dedicated control of composite melt flow. In the present work, the predictive capability of the Phan-Thien-Tanner (PTT) viscoelastic model is evaluated in relation to the extrudate swell from slit dies at 200 °C, considering polypropylene and graphite filler, and applying ANSYS Polyflow software. It is shown that for sufficiently low filler amounts (below 10%; volumetric) the PTT accurately reflects the viscoelastic interactions, but at higher filler amounts too large swellings are predicted. One can although obtain insights on the swelling in the height direction and consider a broader range of swelling areas compared to virgin materials. Guidelines are also provided for future experiments and model development, including the omission of the no-slip process boundary condition.
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Liu K, Wang M, Li H, Zhao D, Jin Y. Effect of characteristic scale on the extrudate swelling behavior of polypropylene melt in a micro‐extrusion process. POLYM ENG SCI 2021. [DOI: 10.1002/pen.25707] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Kui Liu
- School of Mechanical Engineering Dalian University of Technology Dalian People's Republic of China
| | - Minjie Wang
- School of Mechanical Engineering Dalian University of Technology Dalian People's Republic of China
| | - Hongxia Li
- School of Mechanical Engineering Dalian University of Technology Dalian People's Republic of China
| | - Danyang Zhao
- School of Mechanical Engineering Dalian University of Technology Dalian People's Republic of China
| | - Yifei Jin
- Mechanical Engineering Department University of Nevada Reno Reno Nevada USA
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