METHOD FOR PRODUCING ULTRA-HIGH MOLECULAR WEIGHT POLYETHYLENE POWDER MODIFIED BY SILVER NANOPARTICLES Russian patent published in 2017 - IPC B22F1/00 B82Y30/00 C08J3/20 C08L23/06 C08K3/08 

FIELD: chemistry.

SUBSTANCE: invention relates to the production of ultra-high molecular weight polyethylene (UHMWPE) modified with silver nanoparticles. The method comprises impregnating UHMWPE with an organic nanosilver solution. The impregnation is carried out by introducing powdered UHMWPE pre-impregnated with ethanol into a solution of silver salt in ethylene glycol or methyl cellosolve containing ascorbic acid in an equimolar amount to the salt and the resulting suspension is stirred for 1.5-3 hours at a temperature of 20-30°C at a speed of 750-1000 rpm, then the resulting powder is filtered off and washed with distilled water. Silver methanesulfonate or silver trifluoroacetate or silver monochloroacetate is used as silver salt in the amount corresponding to the specified silver content in the modified UHMWPE.

EFFECT: uniform modification of silver nanoparticles.

2 cl, 3 dwg, 5 ex