METHOD OF PRODUCING FRICTION POLYMER MATERIALS Russian patent published in 2010 - IPC C08J5/14 C08L9/00 C08L9/02 C08L63/00 C08K5/14 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of obtaining friction polymer materials and can be used in making brake shoes of railway wagons and locomotives, for motor transport, cranes, structural articles in machine building and other articles. The method of producing friction polymer materials involves processing butadiene or butadiene-nitrile rubber on plastification equipment with their subsequent mixture with a vulcanising agent in form of organic peroxides (A) in form of mixtures with powder (B) and solid phenol-formaldehyde resin (C) in ratio A:B:C ranging from 2:96:2 to 8:70:22. Further, a water-soluble epoxy component is added, which is a product of reacting diane resin with glycol and an aliphatic expoxy resin in form of impregnation of an aqueous solution of the resin on fibre filler with subsequent drying at resin content of 4-30% in terms of the dry product. Fine mineral or metal powder is used. The material contains the following in pts. wt: rubber - 100, vulcanising agent - 30-100, saturated fibre material - 20-120.

EFFECT: improved strength characteristics with simultaneous prevention of diffusion penetration of sulphur into the steel surface of touched article, as well as increased labour safety when mixing components on the plastification equipment - rolls, rubber mixers etc.

2 tbl, 1 ex