COMPOSITION FOR PREPARING SELF-LUBRICATING CARBON MATERIAL Russian patent published in 1997 - IPC

FIELD: supporting friction members. SUBSTANCE: composition comprises, wt.-%: coal-tar pitch coke, 4-10; boron nitride or natural graphite, 5-20; α furylcarbinol polymer 2-5 furfurol-acetone oligomer, 5-10; citric acid, 0.25-0.6; silicon carbide, 10-20; silicon, 3-7; artificial graphite or calcined coke, the balance. Dry components are mixed, hot pressed and roasted under pressure. Mixture of a-furylcarbinol, furfurol acetone and citric acid solution is fed into autoclave and heat treated at pressure. Under conditions of boundary friction in abrasive medium, guaranteed service life of cyclic operation is at least 12000 cycles. EFFECT: improved properties of the composition. 1 tbl