FIELD: chemistry.
SUBSTANCE: moulded fibres are subjected to heat treatment in an air medium while heating and maintaining a constant length. Content of carbon nanotubes in the fibres is 0.3-0.5%. The surface of the nanotubes contains oxygen in amount of not less than 3.5 at %. Oxidative stabilisation is carried out by raising temperature from 180°C to 230°C at a rate of 0.5°C per minute for 110-130 minutes.
EFFECT: simple technique owing to shorter process duration and improved strength properties of polyacrylonitrile fibres owing to low content of carbon nanotubes.
1 tbl, 7 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF OXIDATIVE STABILISATION OF POLYACRYLNITRILE FIBRES FILLED WITH CARBON NANOPARTICLES | 2013 |
|
RU2535797C1 |
| TECHNIQUE OF HIGH-STRENGTH AND HIGH-MODULUS CARBON FIBER RECEIVING | 2007 |
|
RU2343235C1 |
| METHOD OF STRENGTHENING CARBON FIBRE | 2012 |
|
RU2523483C1 |
| PROCEDURE FOR CONTINUOUS PRODUCTION OF HYDRATED CELLULOSE OF CARBON FIBRE IN FORM OF UNIDIRECTIONAL BRAID | 2010 |
|
RU2429316C1 |
| COMPOSITE MATERIALS CONTAINING PPTA AND NANO-TUBES | 2005 |
|
RU2376403C2 |
| COMPOUND CONTAINING CARBONATED BIOPOLYMERS AND CARBON NANOTUBES | 2008 |
|
RU2447531C2 |
| ELECTRICALLY CONDUCTIVE COMPOSITE FIBER AND METHOD FOR ITS PRODUCTION AND APPLICATION | 2022 |
|
RU2790823C1 |
| POLYMER COMPOSITION AND METHOD OF PRODUCING A SPINNING SOLUTION BASED ON A POLYMER COMPOSITION | 2019 |
|
RU2712691C1 |
| METHOD OF OBTAINING ARAMID THREADS MODIFIED WITH CARBON NANOTUBES | 2014 |
|
RU2557625C1 |
| NANOCOMPOSITE MATERIAL BASED ON POLYMER BINDING MATERIALS | 2009 |
|
RU2437902C2 |
