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| Titel: |
A SIMPLIFIED APPROACH TO THE PREDICTION OF PRIMARY NORMAL STRESS DIFFERENCES IN POLYMER MELTS |
| Auteur: |
Shenoy, A.V. Saini, D.R. |
| Verschenen in: |
Chemical engineering communications |
| Paginering: | Jaargang 28 (1984) nr. 1-3 pagina's 1-27 |
| Jaar: |
1984-06-01 |
| Inhoud: |
A relationship between the unified primary normal stress difference function and the unified viscosity function curves proposed earlier by the authors is sought based on a strain dependent single integral constitutive equation of the BKZ-type. The predictions of the equation are checked for best fit of the unified primary normal stress difference curves of low density polyethylene, high density polyethylene, polypropylene and nylon. The approach is then extended to give theoretical predictions of the unified primary normal stress difference curves for a number of other polymers whose unified viscosity curves are known. The approach provides a method to estimate the normal stress difference versus shear rate curves at any temperature through the unified curves merely from the knowledge of the melt flow index. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 2 van 14 gevonden artikelen
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