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https://hdl.handle.net/10119/14229
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| Title: | Flow property at capillary extrusion for ethylene–tetrafluoroethylene copolymer |
| Authors: | Kotera, Seigo
Yamaguchi, Masayuki |
| Keywords: | Ethylene-tetrafluoroethylene copolymer
Rheological properties
Extrusion
Melt fracture |
| Issue Date: | 2015-05-22 |
| Publisher: | Elsevier |
| Magazine name: | Journal of Fluorine Chemistry |
| Volume: | 176 |
| Start page: | 20 |
| End page: | 25 |
| DOI: | 10.1016/j.jfluchem.2015.05.002 |
| Abstract: | The capillary extrusion property of ethylene-tetrafluoroethylene copolymer (ETFE) is evaluated. It is found that ETFE shows several types of flow instabilities. The shark-skin failure is observed over the first critical shear stress 7.9 × 10^4 Pa. Then, the slip-stick instability is detected at 1.8 × 10^5 Pa, which corresponds to the critical stress of the slippage at the die wall, evaluated by the Mooney method. Moreover, gross wavy melt fracture appears at high out-put rate condition. It is interesting to note that quasi-stable flow region; so-called “super-extrusion” is observed between slip-stick and wavy melt fracture regions. Because of the steady slippage, ETFE can be extruded at a high out-put rate condition without surface roughness and distortion of extrudates. |
| Rights: | Copyright (C)2015, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International license (CC BY-NC-ND 4.0). [http://creativecommons.org/licenses/by-nc-nd/4.0/] NOTICE: This is the author's version of a work accepted for publication by Elsevier. Seigo Kotera, Masayuki Yamaguchi, Journal of Fluorine Chemistry, 176, 2015, 20-25, http://dx.doi.org/10.1016/j.jfluchem.2015.05.002 |
| URI: | https://hdl.handle.net/10119/14229 |
| Material Type: | author |
| Appears in Collections: | c10-1. 雑誌掲載論文 (Journal Articles)
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