FIELD: chemistry.
SUBSTANCE: invention relates to method of obtaining solution of copolymer, based on acrylnitrile (PAN), suitable for obtaining polyacrylnitrile fibres-precursors of carbon fibres. Method of obtaining copolymer solution consists in the following: solid-phase mixing of acrylnitrile-based copolymer with content of comonomers not higher than 8 wt % with hydrate of N-methylmorpholine-N-oxide, containing 5-13.3 wt %, is performed at room temperature to complete mixture homogenisation. After that, obtained mixture is heated to temperature 80-135°C. Acrylnitrile-based copolymer is taken in amount 20-50 wt %, the remaining part is hydrate of N-methylmorpholine-N-oxide.
EFFECT: invention makes it possible to increase concentration of PAN solution with its preparation by ecologically pure method.
1 tbl, 13 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PRODUCING SPINNING MIXED SOLUTIONS OF CELLULOSE AND COPOLYMER PAN IN N-METHYLMORPHOLINE-N-OXIDE (VERSIONS) | 2019 |
|
RU2707600C1 |
| EXTRUSION METHOD FOR OBTAINING A SPINNING SOLUTION OF CELLULOSE IN N-METHYLMORPHOLINE-N-OXIDE FOR MANUFACTURING A MOLDED PRODUCT | 2022 |
|
RU2787619C1 |
| METHOD FOR OBTAINING OLIGOMERS OF ACRYLONITRILE AND ITS CO-OLIGOMERS IN THE PRESENCE OF N-METHYLMORPHOLINE-N-OXIDE | 2022 |
|
RU2798656C1 |
| METHOD OF SOLUTION PREPARATION FOR FIBRES MOULDING | 0 |
|
SU1645308A1 |
| METHOD FOR PRODUCING SPINNING SOLUTION BASED ON LINSEED CELLULOSE FOR FORMING HYDRATE CELLULOSE FIBERS | 2020 |
|
RU2748551C1 |
| METHOD OF MANUFACTURING POLYACRYLONITRILE THREADS AND BRAIDS SUITABLE FOR FABRICATION OF HIGH-STRENGTH CARBON FIBERS | 1996 |
|
RU2122607C1 |
| METHOD OF PREPARING PULP TO MANUFACTURE MOLDED ISSUES | 1994 |
|
RU2075560C1 |
| FIBRE-FORMING ACRYLONITRILE COPOLYMER AND SYNTHESIS METHOD THEREOF | 2009 |
|
RU2422467C2 |
| METHOD FOR SYNTHESIS OF ACRYLONITRILE AND ACRYLIC ACID COPOLYMERS | 2013 |
|
RU2550873C2 |
| METHOD FOR PRODUCTION OF N-METHYL MORPHOLINE-N-OXIDE | 1993 |
|
RU2061690C1 |
