SU621812A1 - Method of plasticized drawing of freshly formed polyacrylnitrile fibre - Google Patents
Method of plasticized drawing of freshly formed polyacrylnitrile fibreInfo
- Publication number
- SU621812A1 SU621812A1 SU772447058A SU2447058A SU621812A1 SU 621812 A1 SU621812 A1 SU 621812A1 SU 772447058 A SU772447058 A SU 772447058A SU 2447058 A SU2447058 A SU 2447058A SU 621812 A1 SU621812 A1 SU 621812A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- fiber
- water vapor
- strength
- atm
- dmf
- Prior art date
Links
Landscapes
- Artificial Filaments (AREA)
Description
Изобретение относитс к сбласти получени пшиакрилонитрильного (ПАН) волокна из растворов полимеров в органических растворител х.This invention relates to the production of pu-acrylonitrile (PAN) fibers from polymer solutions in organic solvents.
Известно пластификационное выт гивание ПАН-волокон в среде паров диметилформамида fl.Plasticization stretching of PAN fibers in the vapor environment of dimethylformamide fl.
Однако выт гивание в парах ДМФ не обеспечивает необходимой степени выт гивани и,соответственно, прочности. . However, stretching in DMF vapors does not provide the necessary degree of stretching and, accordingly, strength. .
Известен способ выт гивани ПАН-волокон в паровоздушной среде при атмосферном давлении, т, е. при температуре не выше 100°С 2. Способ иэ-за невысоких кратностейThe known method of drawing PAN fibers in a vapor-air medium at atmospheric pressure, t, that is, at a temperature not exceeding 100 ° C. 2. The method is due to low multiplicities
выт гивани , не позвол ет достичь прочности волокна вьш1е 48 сн-текс.pulling does not allow to reach the strength of the fiber above 48 cn-tex.
Известен способ пластификационного выт гивани свежесформованного ПАНволокна в смеси паров воды и ДМФ под давлением 1-5 атм Гз.A known method for plasticizing the extrusion of freshly formed PANVOLOCNA in a mixture of water vapor and DMF under a pressure of 1-5 atm Gz.
Однако применение указанной смеси паров дл выт гивани гель-волокна ограничено влением быстрой потери растворител волокном, вследствие чего прочность волокна не превышает 55 сн-текс.However, the use of this vapor mixture for stretching the gel fiber is limited by the rapid loss of the solvent in the fiber, so that the strength of the fiber does not exceed 55 cn-tex.
Цель -изобретени - повышение прочнооти; ПАН-волокна.The purpose of the invention is to increase the strength; PAN fiber.
Поставленна цель достигаетс выт гиванием свежесформованного ПАН-волокна в смеси паров воды и ДМФ, содержащей 5-15 масс. % ДМФ.The goal is achieved by stretching the freshly formed PAN fiber in a mixture of water vapor and DMF containing 5–15 wt. % DMF.
Пример 1. Волокно формуют из 14%-ного раствора сополимера акрилонитрида (95%) с метакрилатом (5%) в осадительную ванну, состо щую из 50% ДМФ и затем его подвергают выт гиванию в 7 раз в среде насыщенного пара при атмосферном давлении. Прочность готовой нити - 48 сн-текс,Example 1. A fiber is formed from a 14% solution of acrylonitride copolymer (95%) with methacrylate (5%) into a precipitation bath consisting of 50% DMF and then subjected to stretching 7 times in saturated steam at atmospheric pressure. The strength of the finished thread - 48 sn-tex,
П р и М е р 2. Волокно формуют по примеру 1. После осадительной ванны выт гивают в насыщенном вод ном паре при давлении 5 атм в 8 раз. Прочность; готовой нити 55 сн-текс.A and M e p 2. The fiber is molded according to Example 1. After the precipitation bath, it is stretched in a saturated water vapor at a pressure of 5 atm 8 times. Strength; finished yarn 55 sn-tex.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU772447058A SU621812A1 (en) | 1977-01-27 | 1977-01-27 | Method of plasticized drawing of freshly formed polyacrylnitrile fibre |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU772447058A SU621812A1 (en) | 1977-01-27 | 1977-01-27 | Method of plasticized drawing of freshly formed polyacrylnitrile fibre |
Publications (1)
Publication Number | Publication Date |
---|---|
SU621812A1 true SU621812A1 (en) | 1978-08-30 |
Family
ID=20693422
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU772447058A SU621812A1 (en) | 1977-01-27 | 1977-01-27 | Method of plasticized drawing of freshly formed polyacrylnitrile fibre |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU621812A1 (en) |
-
1977
- 1977-01-27 SU SU772447058A patent/SU621812A1/en active
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