PROCESS FOR THE PRODUCTION OF HIGH-STRENGTH FILAMENTS FROM DRY-SPUN POLYACRYLONITRILE
"Process for the production of high-strength filaments from dry-spun polyacrylonitrile" High-strength filaments of dry-spun polyacrylonitrile are obtained by a process in which tension-reduced spun filaments are continuously stretched hydrothermally in one or more stages: where it involves...
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| creator | SANDHU, SURINDER S GAERTNER, ECKHARD REICHARDT, MANFRED PIEPER, CHRISTIAN NOGAJ, ALFRED |
| description | "Process for the production of high-strength filaments from dry-spun polyacrylonitrile" High-strength filaments of dry-spun polyacrylonitrile are obtained by a process in which tension-reduced spun filaments are continuously stretched hydrothermally in one or more stages: where it involves several stages, stretching is carried out at a temperature of the stretching medium gradually increasing from stage to stage up to ?=?n and, in the final (n-th) stage, to a degree of at least 50% of the maximum degree of stretching; where it is carried out in a single stage, stretching is carried out at the optimal stretching temperature ?n, after which the material is further treated in the conventional way, optionally with fixing of the stretched material to a pre-determined extent. |
| format | Patent |
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where it is carried out in a single stage, stretching is carried out at the optimal stretching temperature ?n, after which the material is further treated in the conventional way, optionally with fixing of the stretched material to a pre-determined extent.</abstract><edition>4</edition><oa>free_for_read</oa></addata></record> |
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| language | eng ; fre |
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| subjects | APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING TEXTILES |
| title | PROCESS FOR THE PRODUCTION OF HIGH-STRENGTH FILAMENTS FROM DRY-SPUN POLYACRYLONITRILE |
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