METHOD OF OXIDATIVE STABILISATION OF POLYACRYLNITRILE FIBRES FILLED WITH CARBON NANOPARTICLES Russian patent published in 2014 - IPC D01F9/22 B82B1/00 D01F1/10 D01F11/04 

FIELD: chemistry.

SUBSTANCE: formed fibres are subjected to thermal processing in an air medium with heating. The fibres with introduced carbon nanoparticles, which are represented by technical carbon in an amount of 0.2-10%, with the surface, containing oxygen in an amount not less than 4.8 atomic %, are subjected to oxidative stabilisation with an increase of temperature from 180 to 230°C at a rate of 0.5°C per minute for 90-110 minutes.

EFFECT: complete performance of the process of oxidative stabilisation of PAN fibres, filled with technical carbon, simplification of the technology due to reduction of the time of the process performance, with the simultaneous reduction of heat conductivity by the fibres, achieved due to the introduction of technical carbon into the fibres, which is necessary for further obtaining of a carbon material, used as a heat insulator for furnaces of an inert medium.

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