METHOD OF PRODUCING ELECTROPRODUCTIVE RUBBER VOLCANIZATE WITH CARBON FILLER Russian patent published in 2017 - IPC C01B31/02 C08J5/04 C08L9/02 C08K3/04 C08K5/00 C08J11/00 

FIELD: chemistry.

SUBSTANCE: method involves curing a rubber mixture at the temperature of 150°C, containing, wt %: SKN-18 - 40 rubber, a vulcanization polysulphide accelerator - 12, dibutyl phthalate - 1, diamine - 1, phthalic anhydride - 1, a carbon filler - 40, regenerate - 5. Herewith the carbon filler material used is the carbonaceous material of the fibrous structure obtained by thermocatalytic pyrolysis of gas condensate from the natural gas purification system at the compressor station of the main gas pipeline under conditions of contact with the iron oxide catalyst Fe₂O₃ at atmospheric pressure and at the temperature of 600-700°C, a bulk feed rate of 25 ml/min, for 5 hours, followed by cooling to 20°C and screening of 50-150 mcm fraction by fractionation of the formed carbon mass on molecular sieves. The finished rubber vulcanizate is subjected to additional heat treatment in a thermostat at the temperature of 250°C for 3 hours.

EFFECT: increasing the yield of the target product, the relative stability of the conductive properties over time, and simplifying the technology for producing the product.

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