METHOD OF PRODUCING THERMALLY OXIDISED FIBRE FROM POLYACRYLONIRILE AND ITS CO-POLYMERS
FIELD: chemistry. ^ SUBSTANCE: invention relates to technology of producing thermally oxidised fibres from polyacrylonitrile and its co-polymers, which can be used, for instance, as semi-product for their further processing into carbon fibres. Method includes passing polymer solution in organic solv...
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| creator | MASHCHENKO VLADIMIR IGOREVICH MALAKHO ARTEM PETROVICH UDRA SERGEJ ALEKSANDROVICH OLENIN ALEKSANDR VLADIMIROVICH SELEZNEV ANATOLIJ NIKOLAEVICH GERASIMOV VASILIJ IVANOVICH SHASHKEEV KONSTANTIN ALEKSANDROVICH AVDEEV VIKTOR VASIL'EVICH |
| description | FIELD: chemistry. ^ SUBSTANCE: invention relates to technology of producing thermally oxidised fibres from polyacrylonitrile and its co-polymers, which can be used, for instance, as semi-product for their further processing into carbon fibres. Method includes passing polymer solution in organic solvent through spinneret with further stages of fibre stretching, removal solvent from it and thermal oxidation in presence of oxidant with heating. Before passing polymer through spinneret, at least one cyclic alkylenecarbonate is introduced into solution, in amount 0.2-20 wt % from solution weight. Obtained solution is heated, at least during 6 min within temperature range from 80°C to temperature of solvent boiling. Fibre stretching stage can be carried out after removal of solvent from fibre, as well as before removal solvent from fibre and after its removal. ^ EFFECT: reduction of duration of fibre thermal oxidation stage 8-15 min with preservation of high operational characteristics of produced fibre. ^ 6 ex |
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Method includes passing polymer solution in organic solvent through spinneret with further stages of fibre stretching, removal solvent from it and thermal oxidation in presence of oxidant with heating. Before passing polymer through spinneret, at least one cyclic alkylenecarbonate is introduced into solution, in amount 0.2-20 wt % from solution weight. Obtained solution is heated, at least during 6 min within temperature range from 80°C to temperature of solvent boiling. 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Method includes passing polymer solution in organic solvent through spinneret with further stages of fibre stretching, removal solvent from it and thermal oxidation in presence of oxidant with heating. Before passing polymer through spinneret, at least one cyclic alkylenecarbonate is introduced into solution, in amount 0.2-20 wt % from solution weight. Obtained solution is heated, at least during 6 min within temperature range from 80°C to temperature of solvent boiling. Fibre stretching stage can be carried out after removal of solvent from fibre, as well as before removal solvent from fibre and after its removal. ^ EFFECT: reduction of duration of fibre thermal oxidation stage 8-15 min with preservation of high operational characteristics of produced fibre. ^ 6 ex</abstract><oa>free_for_read</oa></addata></record> |
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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 | METHOD OF PRODUCING THERMALLY OXIDISED FIBRE FROM POLYACRYLONIRILE AND ITS CO-POLYMERS |
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