COMPOSITE FILLER IN THE FORM OF POWDER AND A PROCESS FOR PREPARATION THEREOF Russian patent published in 2007 - IPC C09C1/62 C09C3/10 C08J5/16 

FIELD: composite materials.

SUBSTANCE: invention relates to powdered composite filler for elastomer materials suitable for fabrication of articles operated under dry friction or increased wear conditions used in engine, compressor, and pump manufacturing industries. Particles of filler comprise at least one nucleus of inorganic material, in particular quasi-crystalline alloy Al-Cu-Fe or quasi-crystalline alloy Al-Cu-Cr and shell made from thermoplastic polymer with elasticity modulus 0.5 to 5.0 GPa and volume fraction of nuclei in a filler particle 1 to 10%. Process of preparing such composite filler resides in that inorganic material particles are activated in a mechanochemical activator with mechanical energy supply intensity 1 to 5 kW/kg and dose 30 to 1000 kJ/kg in a medium selected from a series: air, nitrogen, argon, and vacuum at pressure from 10^-2 to 1 atm until particles with average size not larger than 15 μm are obtained, after which shell polymer is added to activator and inorganic material particles are modified at mechanical energy supply intensity 0,05 to 0.5 kW/kg and dose 3 to 100 kJ/kg in a medium selected from a series: air, nitrogen, argon, and vacuum at pressure from 10^-2 to 1 atm.

EFFECT: lowered coefficient of friction under dry friction conditions and substantionally reduced summary rate of wear of friction pair under hydroabrasive wear conditions.

3 cl, 2 dwg, 3 tbl