METHOD OF OBTAINING ANTIFRICTION MOULDING MATERIALS Russian patent published in 2008 - IPC C08L63/00 C08J5/16 C08K13/02 F16C33/04 

FIELD: physics.

SUBSTANCE: invention concerns production of antifriction epoxy moulding materials used in manufacturing of inserts for bearing bushings with binary friction surface, i.e. greases, as well as construction material and electric insulator in electrical engineering and other technical fields. The method involves forge rolling of solid pre-polymer with fluorine rubber capable of curing by an amine, in the ratio of 90:10 to 60:40 at the temperature of 60-90°C for 5-30 minutes. Here pre-polymer is a product of interaction of epoxidised novolac (A) with epoxy diane resin of molecular mass 360 to 540 (B) and with 3,3'-dichlor-4,4'-diaminodiphenylmethane (C) in the A:B:C ratio of 85:10:5 to 5:80:15, obtained by heating at 60-130°C for 30-120 minutes. Further to 100 mass parts of forge-rolled mix 15.0-50.0 mass parts of arylamine as curative, 5.0-50.0 mass parts of polytetrafluoretylene and 10.0-100.0 mass parts of chopped fiber as filler, and 2.0-6.0 mass parts of antiadhesive are added. The composition is additionally forge-rolled at 40-80°C for 5-15 minutes, then the resulting mass is cooled and crushed.

EFFECT: improved antifriction properties of moulding material.

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