ANTIFRICTION COMPOSITE MATERIAL Russian patent published in 2022 - IPC C08L27/18 C08J5/16 C08K3/08 F16C33/24 

FIELD: chemistry.

SUBSTANCE: antifriction composite material for making plain bearings of machines and units, consisting of polytetrafluoroethylene, molybdenum disulphide and fillers, one of which is ultrafine powder of cryptocrystalline graphite. Second filler is a low-melting material enclosed in a thin-walled shell in the form of capsules made of copper or its alloys in the form of a sphere, ellipsoid or cylinder with conical bases with diameter of 5–6 mm and length of 8–10 mm, wherein components of antifriction material are specified in the following volume ratio: polytetrafluoroethylene 70–75 %, molybdenum disulphide 1–3 %, cryptocrystalline graphite 2–6 %, low-melting material enclosed in a thin-wall shell, 15–20 %, and the melting point of the low-melting component is set in range from 80 to 140 °C.

EFFECT: increased operability of plain bearing inserts due to more efficient heat removal from the friction zone and its in-structure absorption due to the presence of capsules with low-melting material in the structure of the material, reducing and stabilizing temperature of tribotechnical unit operation.

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