FRICTIONAL MATERIAL Russian patent published in 2015 - IPC C08J5/16 C08L27/12 C08L27/00 

FIELD: chemistry.

SUBSTANCE: invention relates to polymer composite materials for tribotechnical purposes and can be used in mechanical engineering to produce components of friction assemblies, which provide a high frictional coefficient which is stable for a long period of time, primarily frictional components of winding mechanisms. The frictional material contains, wt %: crushed basalt fibre 2.0-10.0; tetrafluoroethylene and hexafluoropropylene copolymer and copolymer 2.0-12.0; metal filler 8.0-24.0 and polytetrafluoroethylene - the balance. The metal filler used is siliconised carbonyl iron and/or a chrome-nickel alloy. The material is made via mechanical mixing of the components. Articles are made by cold moulding at pressure of 50-60 MPa and then sintering the workpieces at 375±5°C. The time for holding the workpiece at said temperature is determined based on 5 min per 1 mm thickness of the article.

EFFECT: invention increases the value and stability of the frictional coefficient while maintaining high mechanical strength, wear resistance and heat resistance of the material.

2 cl, 2 tbl