ANTIFRICTION POLYMER COMPOSITION (VARIANTS) AND METHOD FOR ITS PRODUCTION Russian patent published in 1998 - IPC

FIELD: manufacturing of sliding bearing and bearing shells and sliding supports which operate by friction without lubrication. SUBSTANCE: proposed composition comprises aliphatic polyamide which comprises 5-30 mass % of carbon fibrous filler, low pressure polyethylene, anaerobic sealing materials. Or it comprises carbon fibrous filler, low pressure polyethylene and other type of anaerobic sealing material, solid lubricant and aliphatic polyamide. Granules of aliphatic polyamide comprising carbon fibrous material are treated by anaerobic sealing materials of the second type, the process is carried out at 50-60 C by constant mixing within 20-30 min. Then sustaining within 60-90 min at 18-35 C is carried, the process is followed by mixing with granules of low pressure polyethylene and are processed into desired article. Coefficient of friction of desired article is 0.121-0.186, their destructive bending stress being 60-116 MPa, destructive compression stress being 95-146 MPa, Martense heat resistance being 73-96. EFFECT: improved quality of desired product. 6 cl, 2 tbl