ANTI-FRICTION POLYMER COMPOSITE Russian patent published in 2015 - IPC C08J5/16 B61H1/00 C08L59/00 C08L59/02 C08L59/04 C08K13/02 

FIELD: chemistry.

SUBSTANCE: invention refers to anti-friction polymer composites and can be used for manufacturing pipe stocks for triangle sockets of a brake assembly of freight-car trucks. An antifriction polymer composition is made from a composition containing polyoximethyleme and modifying additives in the form of a powder mixture and superhigh-molecular polyethylene with molecular weight 4,500,000 standard units and "Ф4К15М5" fluoroplast in the following proportions, wt %: polyoxymethylene 96, modifying additives 4. A polymer base is presented by polyoxymethylene with a min. melt fluidity of not less than 2 g/10 min. The modifying additives are introduced into the polymer base when mixing the ingredients in a paddle-wheel agitator to prepare a homogenous mixture with passing the composite through a granulating machine.

EFFECT: increased physical-mechanical characteristics of the material providing stability to side edge cracking when sockets are in use, oil-stability, atmospheric stability, high wear resistance and low friction coefficient.

2 cl, 2 tbl