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Effect of Recycling on Rheological and Mechanical Properties of High Impact Polystyrene | ||
| KUFA JOURNAL OF ENGINEERING | ||
| Article 1, Volume 2, Issue 2, 2010, Pages 103-114 | ||
| Author | ||
| Sawsan D. A. Shubbar | ||
| Abstract | ||
| High impact polystyrene (HIPS) was subjected to repeated thermal and shear stresses by different methods, using a high pressure capillary Rheometer, a laboratory extruder and a Brabender plasticorder. The results showed that the recycling of HIPS caused a decrease in the shear stresses and consequently in the viscosity at constant shear rate. The high pressure capillary Rheometer gave a greater decrease than with the Brabender plasticorder. Tensile strength values were progressively decreased with the laboratory extruder, but increased in the case of Brabender mixer; the elongation was decreased in both cases. This work was then applied in a local plant to compare experimental and actual results. | ||
| Keywords | ||
| mechanical recycling; high; impact polystyrene; rheology; apparent viscosity; shear stresses; thermal degradation | ||
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