Hydrostatic compression tests, capillary rheometry tests, and extrusion tests performed on unvulcanized rubber confirm importance of compressibility for die swell — Arguments from dimensional analysis
This paper aims at elucidating which factors are effective in terms of influencing the die swell of unvulcanized rubber upon extrusion. To that end, compression, viscosity, and extrusion tests were performed on two types of ethylene–propylene–diene rubbers, while additional compression tests were pe...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-09-01
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| Series: | Polymer Testing |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0142941821002373 |
| _version_ | 1818586331573387264 |
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| author | R. Plachy C. Hellmich F. Arthofer S. Robin A. Holzner S. Scheiner |
| author_facet | R. Plachy C. Hellmich F. Arthofer S. Robin A. Holzner S. Scheiner |
| author_sort | R. Plachy |
| collection | DOAJ |
| description | This paper aims at elucidating which factors are effective in terms of influencing the die swell of unvulcanized rubber upon extrusion. To that end, compression, viscosity, and extrusion tests were performed on two types of ethylene–propylene–diene rubbers, while additional compression tests were performed on natural rubber. First, all three testing modalities were assessed separately, revealing that for the tested materials the compressibility is pressure-dependent; the viscosity is velocity-dependent; and the die swell is influenced by several, partly intertwined factors. In order to better understand the collected experimental data, we have employed the theoretical tool of dimensional analysis, showing that the compressibility of unvulcanized rubber is of great importance for the die swell. Surprisingly, the temperature dependence of the die swell turns out to be much less prominent than standardly assumed. Further key factors influencing the die swell concern the geometries of the die and of the canal. |
| first_indexed | 2024-12-16T08:51:16Z |
| format | Article |
| id | doaj.art-45c98b9dd7854cdabb082f92c247cf8f |
| institution | Directory Open Access Journal |
| issn | 0142-9418 |
| language | English |
| last_indexed | 2024-12-16T08:51:16Z |
| publishDate | 2021-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Polymer Testing |
| spelling | doaj.art-45c98b9dd7854cdabb082f92c247cf8f2022-12-21T22:37:24ZengElsevierPolymer Testing0142-94182021-09-01101107289Hydrostatic compression tests, capillary rheometry tests, and extrusion tests performed on unvulcanized rubber confirm importance of compressibility for die swell — Arguments from dimensional analysisR. Plachy0C. Hellmich1F. Arthofer2S. Robin3A. Holzner4S. Scheiner5Institute for Mechanics of Materials and Structures, TU Wien (Vienna University of Technology), 1040 Vienna, AustriaInstitute for Mechanics of Materials and Structures, TU Wien (Vienna University of Technology), 1040 Vienna, AustriaSemperit Technische Produkte GmbH, 2632 Wimpassing, AustriaSemperit Technische Produkte GmbH, 2632 Wimpassing, AustriaSemperit Technische Produkte GmbH, 2632 Wimpassing, AustriaInstitute for Mechanics of Materials and Structures, TU Wien (Vienna University of Technology), 1040 Vienna, Austria; Corresponding author.This paper aims at elucidating which factors are effective in terms of influencing the die swell of unvulcanized rubber upon extrusion. To that end, compression, viscosity, and extrusion tests were performed on two types of ethylene–propylene–diene rubbers, while additional compression tests were performed on natural rubber. First, all three testing modalities were assessed separately, revealing that for the tested materials the compressibility is pressure-dependent; the viscosity is velocity-dependent; and the die swell is influenced by several, partly intertwined factors. In order to better understand the collected experimental data, we have employed the theoretical tool of dimensional analysis, showing that the compressibility of unvulcanized rubber is of great importance for the die swell. Surprisingly, the temperature dependence of the die swell turns out to be much less prominent than standardly assumed. Further key factors influencing the die swell concern the geometries of the die and of the canal.http://www.sciencedirect.com/science/article/pii/S0142941821002373ViscosityCompressibilityExtrusionCircular dieBuckingham theorem |
| spellingShingle | R. Plachy C. Hellmich F. Arthofer S. Robin A. Holzner S. Scheiner Hydrostatic compression tests, capillary rheometry tests, and extrusion tests performed on unvulcanized rubber confirm importance of compressibility for die swell — Arguments from dimensional analysis Polymer Testing Viscosity Compressibility Extrusion Circular die Buckingham theorem |
| title | Hydrostatic compression tests, capillary rheometry tests, and extrusion tests performed on unvulcanized rubber confirm importance of compressibility for die swell — Arguments from dimensional analysis |
| title_full | Hydrostatic compression tests, capillary rheometry tests, and extrusion tests performed on unvulcanized rubber confirm importance of compressibility for die swell — Arguments from dimensional analysis |
| title_fullStr | Hydrostatic compression tests, capillary rheometry tests, and extrusion tests performed on unvulcanized rubber confirm importance of compressibility for die swell — Arguments from dimensional analysis |
| title_full_unstemmed | Hydrostatic compression tests, capillary rheometry tests, and extrusion tests performed on unvulcanized rubber confirm importance of compressibility for die swell — Arguments from dimensional analysis |
| title_short | Hydrostatic compression tests, capillary rheometry tests, and extrusion tests performed on unvulcanized rubber confirm importance of compressibility for die swell — Arguments from dimensional analysis |
| title_sort | hydrostatic compression tests capillary rheometry tests and extrusion tests performed on unvulcanized rubber confirm importance of compressibility for die swell arguments from dimensional analysis |
| topic | Viscosity Compressibility Extrusion Circular die Buckingham theorem |
| url | http://www.sciencedirect.com/science/article/pii/S0142941821002373 |
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