FIELD: chemistry.
SUBSTANCE: method involves soaking starting cellulose fibre with an aqueous solution containing 6.5% dibasic ammonium phosphate, 10.6% ammonium chloride and 2.5% sodium chloride at 30°C for 30 minutes, followed by pressing. The fibre is then dried at 95±5°C using a microwave source and then heat treated in a medium of methane to 220°C. The partially carbonised material is heated in a medium of nitrogen to 2400°C. The microwave source has output power of 1-50 kW and operating frequency of 100-300 MHz.
EFFECT: invention increases efficiency of the method of producing carbon fibre with high strength.
2 ex
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