Optimization of fiber drawing processes in terms of the filament state variables
| Autor: | R. H. Butler, D. C. Prevorsek, Young Doo Kwon |
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| Rok vydání: | 1982 |
| Předmět: |
State variable
Yield (engineering) Materials science Polymers and Plastics Process (computing) Mechanical engineering General Chemistry Yarn Mechanism (engineering) Protein filament chemistry.chemical_compound Nylon 6 chemistry visual_art Materials Chemistry visual_art.visual_art_medium Fiber Composite material |
| Zdroj: | Polymer Engineering and Science. 22:329-344 |
| ISSN: | 1548-2634 0032-3888 |
| DOI: | 10.1002/pen.760220602 |
| Popis: | A new method of optimizing the fiber drawing process involving the feed roll, the heated elements and the take-up roll is presented. In this method, the process is described in terms of the filament temperature and filament extension in the drawing zone. This is in contrast to the conventional approach in which the machine control variables such as the heated element temperature, fiber feed velocity and the total draw ratio were used to describe the process. It is shown that the drawing process seldom proceeds by a simple yielding mechanism and that a one-step drawing process usually involves a yield draw followed by a post-yield stretching. Using the drawing of nylon 6 fibers as an example, it is shown that the most critical factors related to achieving the highest fiber strength in drawing from a given precursor are the yarn temperature and yarn extension at yielding and during the post-yield drawing. |
| Databáze: | OpenAIRE |
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