METHOD OF MODIFYING CARBON NANOTUBES FOR PRODUCING ELECTROCONDUCTIVE SILICONE COMPOSITES Russian patent published in 2024 - IPC C01B32/174 B82Y40/00 C08G77/398 B82Y30/00 C07F17/02 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of modifying carbon nanotubes for producing electroconductive silicone composites. Disclosed is a method of producing modified carbon nanotubes for electroconductive silicone composites, where ferrocenyl-containing compound used is ferrocenyl-containing cyclooligosiloxanes, and as carbon nanotubes multilayer carbon nanotubes (MCNT) are used, which consists in the fact that carbon nanotubes are mixed with dioxane, taken in volume ratio of 1 to 100, method includes treating the obtained mixture with ultrasound for 3-5 minutes and subsequent blowing with argon, then adding ferrocenyl-containing cyclooligosiloxanes and a catalyst mixture consisting of AlCl₃ and Al in molar ratio of 4 to 1, mixture is intensively stirred at 80-100 °C for 24-48 hours; modified carbon nanotubes are separated by centrifugation, washed with water, treated with sodium tetrafluoroborate and successively washed with water, methanol and chloroform, then dried at 100 °C for 4-24 hours.

EFFECT: modification of multilayer carbon nanotubes (MCNT) without using oxidising acids and without using toxic reagents, from which flexible, highly elastic and extensible silicone composites can be obtained based on MCNTs modified with ferrocenyl-containing oligo- and polysiloxanes, having electrical conductivity at the level of semiconductors.

1 cl, 4 ex