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Izdelava polipropilenskih vlaken iz mešanic dveh polimerov različne molekulske mase = Manufacturing of polypropylene fibres from binary polymer blends of different molecular weightsGregor-Svetec, DianaPo razvitju laboratorijskega postopka izdelave visokomodulnih polipropilenskih vlaken je bila raziskana tudi možnost oblikovanja vlaken iz mešanice dveh polimerov različne molekulske mase in različne ... porazdelitve molekulskih mas ter pridobivanje visokomodulnih PP vlaken na ta način. Raziskava je pokazala, da dodatek CR-polimera (CR - Controlled Rheology, reološko kontroliran polimer) nižje molekulske mase z ožjo porazdelitvijo molekulskih mas k polimeru višje molekulske mase s širšo porazdelitvijo molekulskih mas izboljša njegovo predilnost in omogoča izdelavo vlaken z izboljšanimi mehanskimi lastnostmi. Med visokomodulna vlakna spadajo filamentne preje: ki so oblikovane iz polimerne mešanice s prevladujočim deležem CR-polimera, izdelane so s hitro ohladitvijo ekstrudata pri majhnem razvleku v predilnem jašku, z večstopenjskim kontinuirnim in dodatnim diskontinuirnim raztezanjem do mejnih razteznih razmerij pri nizkih hitrostih in visokih temperaturah; njihovi moduli pa so nad 13 Gpa.Source: Tekstilec : glasilo slovenskih tekstilcev. - ISSN 0351-3386 (Letn. 43, št. 11/12, 2000, str. 387-397)Type of material - article, component partPublish date - 2000Language - slovenianCOBISS.SI-ID - 881264
Author
Gregor-Svetec, Diana
Topics
polipropilen |
polimerna mešanica |
molekulska masa |
predenje iz taline |
modul elastičnosti
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source: Tekstilec : glasilo slovenskih tekstilcev. - ISSN 0351-3386 (Letn. 43, št. 11/12, 2000, str. 387-397)
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Gregor-Svetec, Diana | 08610 |
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