METHOD OF PRODUCING OPEN-PORE MICROSTRUCTURAL CARBON MATERIAL Russian patent published in 2020 - IPC C01B32/05 C08J9/06 

FIELD: chemical technology.

SUBSTANCE: invention can be used for production of materials absorbing melts of chemical substances. First, starting material is prepared in form of a mixture containing resol resin and pore-former—solution of oxalic acid in polyatomic alcohol, to which an oxygen-containing nickel salt is added as an activating additive. Obtained mixture is evacuated, poured into mold and cured in oven at 65–75 °C. Cured workpiece is heat treated at 400–450 °C and constant removal of generated gases. Obtained phenol precursor is impregnated with a resol solution of the resin in a volatile organic solvent in weight ratio (3–5):1 and dried. Then carbonisation is carried out at constant removal of formed gases in metal cell in muffle furnace without air access at 850–900 °C with uniform temperature rise at rate of 2–3 deg/min. Obtained open-cell microstructured carbon material has a micro-mesh or microsphere structure and high mechanical strength.

EFFECT: invention makes it possible to adjust density and mechanical strength in thin layer of material.

1 cl, 3 dwg, 1 tbl, 3 ex