SU368355A1 - METHOD FOR PRODUCING FIBER BASED ON ACRYLONITRILE - Google Patents
METHOD FOR PRODUCING FIBER BASED ON ACRYLONITRILEInfo
- Publication number
- SU368355A1 SU368355A1 SU1313408A SU1313408A SU368355A1 SU 368355 A1 SU368355 A1 SU 368355A1 SU 1313408 A SU1313408 A SU 1313408A SU 1313408 A SU1313408 A SU 1313408A SU 368355 A1 SU368355 A1 SU 368355A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- acrylonitrile
- fibers
- fiber based
- producing fiber
- precipitation bath
- Prior art date
Links
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D01F6/18—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polymers of unsaturated nitriles, e.g. polyacrylonitrile, polyvinylidene cyanide
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/28—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D01F6/38—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds comprising unsaturated nitriles as the major constituent
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Artificial Filaments (AREA)
Description
1one
Известен способ получени волокон на основе акрилонитрила путем формовани диметилформамидных растворов лоли(сополи)меров акрилонитрила в .водно-диметилформамидную осадительную ванну. A known method of producing acrylonitrile-based fibers by molding dimethylformamide solutions of lol (copoly) acrylonitrile into an aqueous-dimethylformamide precipitation bath.
С целью придани волокнам высокой прочности при разрыве предложено рН осадительной ванны поддерживать равным 1-4.In order to impart high tensile strength to the fibers, it has been proposed to maintain the pH of the precipitation bath equal to 1-4.
Пример 1. При 20°С продавливают 18%-ный раствор гомополимера акрилонитрила (мол. вес 69000) в диметилформамиде через сопло с 60 отверсти ми диаметром 0,16 мм в осадительную ванну, содержапдую чистую воду. Образующеес волокно нат гивают на пару вальцев со скоростью 3,75 м/мин. Степень набухани Q полученных волокон после 24 час -пребывани в воде составл ет 475%. Волокна пр01пускают через .раст гивающую ванну, котора содержит воду с температурой 96°С, и наматывают на последующую пару вальцев, скорость вpaJщeни которых несколько выще скорости вращени первой пары вальцев. Максимальна степень раст жени V равна отнощению скоростей первой и второй пары вальцев. В данном случае V не может быть больще 1,5, поскольку с увеличением V происходит разрыв волокон в раст гивающей ванне. После высушивани прочность при разрыве полученных волокон достигает 1,69 р/денье.Example 1. At 20 ° C, a 18% solution of acrylonitrile homopolymer (mol. Weight 69,000) in dimethylformamide is forced through a nozzle with 60 holes with a diameter of 0.16 mm into a precipitation bath containing clean water. The resulting fiber is pulled on a pair of rollers at a speed of 3.75 m / min. The degree of swelling of the Q obtained fibers after 24 hours is 475% in water. The fibers are run through a stretching bath, which contains water at a temperature of 96 ° C, and is wound on a subsequent pair of rolls, the speed of which is somewhat higher than the speed of rotation of the first pair of rolls. The maximum degree of stretching V is equal to the ratio of the speeds of the first and second pairs of rollers. In this case, V cannot be more than 1.5, since an increase in V leads to rupture of fibers in a stretching bath. After drying, the tensile strength of the fibers obtained reaches 1.69 p / denier.
В примерах 2-8 пр дут волокна, аналогично примеру 1, измен рП осадительной ванны.In examples 2-8, fibers are fed, analogously to example 1, by changing the RP of the precipitation bath.
В примерах 7 и 8 дл пр дени используют 18%-ный раствор лолимеризата (мол. вес 66600), содерж:ащего 97,3 вес. акрилонитрила и 2,7 вес. % метилакрилата. Полученные результаты приведены в таблице.In examples 7 and 8, an 18% strength solution of limerizate (mol. Weight 66600) is used, containing: 97.3 wt.%. acrylonitrile and 2.7 wt. % methyl acrylate. The results are shown in the table.
Осадительна ванна содержит 196 щавелевой кислоты. Предмет изобретени Способ получени волокон на основе акрилонитрила путем формовани диметилформамидных растворов поли(сополи) меров акри- 5 лонитрила в водно-диметилформамидную осадительную ванну, отличающийс тем, что, с целью придани волокнам высокой прочности при разрыве, рН осадительной ванны поддерживают равным 1-4. The precipitation bath contains 196 oxalic acid. The subject of the invention. A method for producing acrylonitrile-based fibers by molding dimethylformamide solutions of poly (copoly) acrylonitrile measures into a water-dimethylformamide precipitation bath, characterized in that in order to impart high tensile strength to the fibers, the pH of the precipitation bath is maintained at 1-4 .
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DD13101668 | 1968-03-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU368355A1 true SU368355A1 (en) | 1973-01-26 |
Family
ID=5479850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU1313408A SU368355A1 (en) | 1968-03-22 | 1969-03-21 | METHOD FOR PRODUCING FIBER BASED ON ACRYLONITRILE |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE1910714A1 (en) |
| RO (1) | RO55601A (en) |
| SU (1) | SU368355A1 (en) |
-
1969
- 1969-03-03 DE DE19691910714 patent/DE1910714A1/en active Pending
- 1969-03-21 RO RO5944569A patent/RO55601A/ro unknown
- 1969-03-21 SU SU1313408A patent/SU368355A1/en active
Also Published As
| Publication number | Publication date |
|---|---|
| RO55601A (en) | 1974-01-03 |
| DE1910714A1 (en) | 1969-12-04 |
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