| Titre : |
Microstructure and prediction of stress-strain behaviour of cold-rolled PP sheets |
| Type de document : |
texte imprimé |
| Auteurs : |
S. Z. Wu, Auteur ; W. B. Lee, Auteur |
| Année de publication : |
2001 |
| Article en page(s) : |
p. 302-308 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Index. décimale : |
668.9 Polymères |
| Résumé : |
A constitutive equation for cold-rolled polypropylene is presented based on a modified two-phase model for semicrystalline polymer, which combines the crystalline network that obeys the Langevin based theory and the entangled network with slip-linked character. The microstructure of the rolled semicrystalline polymer consists of packed crystalline inclusions which are separated by adjacent amorphous regions. A theoretical description of the stress strain behaviour is obtained by the sum of the stress effects from crystalline and entangled networks. The microstructural observation by scanning electron microscopy, X-ray pole figures and differential scanning calorimetry show that polymer chains are aligned along the rolling direction. The stress-strain equation can be obtained from the modified two-phase model and verified by experimental results. |
| Note de contenu : |
-THEORETICAL STUDY : Modified two phase model - Theoretical two-phase model - Theoretical study (Crystalline network, Stress from crystalline network, Stress from entangled network
- EXPERIMENTS AND RESULTS : Experiments (Sample preparation, Scanning Electron Microscopy SEM, X-Ray pole figure, Differential scanning calorimetry DSC, Mechanical properties) - Microstructures - Comparison od stress-strain equation with experimental results |
| DOI : |
10.3139/217.1646 |
| En ligne : |
https://drive.google.com/file/d/1cgFJy0nWebM88Z4aK_5SXkSFWPpqEOWS/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=15914 |
in INTERNATIONAL POLYMER PROCESSING > Vol. XVI, N° 3 (09/2001) . - p. 302-308
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