▎ 摘　　要

NOVELTY - Preparing graphene-modified thermoplastic polymers in the form of polyesters, polyacrylates and polyolefins, comprises e.g.: introducing 5-20% suspension of graphene in alcohol or amide, and star-shaped polyol having six-arm structure, where both components are combined at 5-60 degrees C, and stirring the resultant until homogeneous mixture is obtained; adding crosslinking agent in form of diphenylmethane polymer diisocyanate to carry out at least two hydroxy groups in cyanate groups and hydroxy/cyanate transition catalyst to initiate the crosslinking process; and mixing whole mixture intensively. USE - The method is useful for preparing graphene-modified thermoplastic polymers. ADVANTAGE - The method provides graphene-modified thermoplastic polymers with antistatic properties and increased strength and conductivity. DETAILED DESCRIPTION - Preparing graphene-modified thermoplastic polymers in the form of polyesters, polyacrylates and polyolefins, comprises: introducing 5-20% a suspension of graphene having a particle size of 20-300 nm in an alcohol or amide, and a star-shaped polyol having a six-arm structure and an average molecular weight of 3000-20000 into the reactor, where both components are combined at 5-60 degrees C, and stirring the resultant until a homogeneous mixture is obtained, in a weight ratio of 1:50-1:1000; adding a crosslinking agent in the form of diphenylmethane polymer diisocyanate to carry out at least two hydroxy groups in the cyanate groups and the hydroxy/cyanate transition catalyst to initiate the crosslinking process; mixing whole mixture intensively, preferably until the exothermic reaction disappears, to best homogenize the system; treating the mixture with reduced pressure, preferably 0.5-40 mm Hg for 50-360 minutes, resulting in graphene-doped polyurethane, which crumbles to a particle size of 0.05-0.5 mm, and blends with the polymer in the form of polyester, polyacrylate or polyolefin; and blending and extruding the resulting mixture in the form of a string or granulate.