METHOD OF PRODUCING COMPLEX CARBON FIBROUS MATERIAL Russian patent published in 2019 - IPC D01F9/16 

FIELD: technological processes.

SUBSTANCE: invention relates to production of high-temperature materials used for heat insulation of thermal equipment, as well as reinforcing filler of composite materials. Method of producing complex carbon fibrous material involves continuous carbonization and graphitization of a nonwoven fibrous web containing cellulose. During its transportation, reinforcing component or substrate is represented by cellulose tissue subjected to complex finishing. Initial dry nonwoven fabric is placed on the wet prepared textile substrate impregnated with a catalyst solution. Produced pack is passed between squeezing rollers. Then the bag is treated in a superheated air-steam medium, dried, subjected to intensive heating for 1–3 minutes to the beginning temperature of pyrolysis of cellulose macromolecules. Heated package, not allowing cooling, is moved from intensive heating chamber into first heating zone of carbonization chamber. Carbonization and graphitization of the packet is carried out.

EFFECT: higher intensity and efficiency of the process of producing complex carbon fibrous material and improved quality thereof.

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