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http://nopr.niscpr.res.in/handle/123456789/32622| Title: | Computer simulation of melt spinning of poly(ethylene terephthalate) using a steady-state model |
| Authors: | Bhuvanesh, Y C Gupta, V B |
| Keywords: | Freeze line;Melt spinning;Poly(ethylene terephthalate);Sensitivity analysis;Simulation;Steady-state model;Variable force model |
| Issue Date: | Dec-1990 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | A steady-state model for melt spinning has been used to carry out analytical simulations and subsequently provide information on the velocity, diameter, force and temperature profiles along the spinning way for poly(ethylene terephthalate). The model uses a variable spin line force as against a constant force used by some earlier workers, as the former brings out the effect of processing parameters on the spinning process more realistically and in greater detail. The simulations were carried out using a fourth and fifth order approximation with a Fehlberg modification of the Range Kutta technique. These were then used to carry out sensitivity analysis which provides useful information on the effect of process conditions on product properties. The primary variables subjected to sensitivity analysis were melt temperature, intrinsic viscosity, throughput rate, cooling air temperature and velocity. The process sensitivity of each of these parameters and their relevance with reference to industrial spinning was considered. The dependence of the filament acceleration and its rate of cooling on take-up speed is also brought out in the present work. On-line measurements of surface temperature and filament diameter were attempted and the data so obtained were compared with the results obtained by simulation. The results achieved were particularly helpful in gaining good insight into some aspects of the dynamics of melt spinning. |
| Page(s): | 145-153 |
| ISSN: | 0975-1025 (Online); 0971-0426 (Print) |
| Appears in Collections: | IJFTR Vol.15(4) [December 1990] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJFTR 15(4) 145-153.pdf | 1.04 MB | Adobe PDF | View/Open |
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