| Titre : |
Rheology and processing of tetrafluoroethylene/hexafluoropropylene copolymers |
| Type de document : |
texte imprimé |
| Année de publication : |
2012 |
| Article en page(s) : |
p. 167-180 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Extrusion capillaire
Fluoroélastomères
Rhéologie
Rhéométrie
|
| Index. décimale : |
668.9 Polymères |
| Résumé : |
The rheology and processing of tetrafluoroethylene/hexafluoropropylene (TFE/HFP) copolymers and TFE/HFP/per-fluoro( alkyl vinyl ether) (TFE/HFP/PAVE) terpolymers, also known as FEP polymers, are reviewed in this paper. Dynamic linear viscoelasticity and other fundamental rheological properties such as the critical molecular weight for the onset of entanglements, Mc, the zero-shear viscosity versus molecular weight relationship, dependence of rheology on thermal history and aspects of shear-induced crystallization are presented. The melt fracture and wall slip behavior of FEP resins is also discussed. Finally, possible processing aids that can be used in the extrusion of FEP resins in order to postpone melt fracture phenomena to higher flow rates are also discussed thoroughly. |
| Note de contenu : |
- CHEMICAL STRUCTURE OF FLUOROPOLYMERS : Tetrafluoroethylene/hexafluoropropylene (TFE/HFP or FEP) copolymers
- RHEOLOGY OF TFE/HFP POLYMERS : Materials and characterisation - Rheological measurements(Low melting point FEP) - Rheological measurement (highmelting point FEP) - Effect of preheating on rheological measurements - Rheological measurements (terpolymers TFE/HFP/PAVE (group C)
- PROCESSING OF FEP POLYMERS : The flow curve of FEP resins - The effect of pressure on the flow curve of FEP resins - Wall slip - The effect temperature on capillary extrusion - Comparison of the processability of various FEP resins - Processing aids for FEP resins |
| DOI : |
10.3139/217.2539 |
| En ligne : |
https://drive.google.com/file/d/1v_Je-QtaRmsY3arxzFEpfse289vT1PTy/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=14592 |
in INTERNATIONAL POLYMER PROCESSING > Vol. XXVII, N° 2 (05/2012) . - p. 167-180
Aller sur edunet
Accueil
Rheology and processing of tetrafluoroethylene/hexafluoropropylene copolymers in INTERNATIONAL POLYMER PROCESSING, Vol. XXVII, N° 2 (05/2012)
