Abstract
The creep response of a highly oriented polypropylene tape used for the manufacture of self-reinforced polypropylene or all-polypropylene composites was studied over a range of stresses and temperatures. Similar to oriented polyethylene, the creep compliance is linear viscoelastic at short loading times, whereas pronounced stress dependence is observed at longer loading times. A mathematical model is proposed, where the total deformation of the fibre is regarded as being composed of a stress-linear delayed elastic component and a nonlinear plastic flow contribution. Model predictions are in good agreement with the experimental data.
| Original language | English |
|---|---|
| Pages (from-to) | 987-992 |
| Number of pages | 6 |
| Journal | Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications |
| Volume | 232 |
| Issue number | 12 |
| Early online date | 6 Jul 2016 |
| DOIs | |
| Publication status | Published - 1 Dec 2018 |
Keywords
- creep
- Mechanical properties
- oriented tapes
- self-reinforced polypropylene
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