METHOD OF PRODUCING COMPOSITE MATERIALS AS POLYMER MATRICES FILLED WITH NANOPARTICLES OF METAL OXIDES WITH MODIFIED SURFACE Russian patent published in 2017 - IPC C08J3/28 C08K13/06 C08K3/22 C08K5/19 C08L101/00 C08L27/06 B82B3/00 C08K5/98 C08L25/06 C08J5/18 

FIELD: chemistry.

SUBSTANCE: for the production of composite materials, the surface of the original BaTiO₃ nanoparticles is preliminarily activated by the application of hydroxyl groups by boiling in a hydrogen peroxide solution and modified with cationic surfactant molecules by treatment with a solution of a cationic surfactant at a concentration below the critical micelle concentration. The resulting precipitate is filtered, washed from the cationic surfactant unbound to the surface of the metal oxide nanoparticles, and dried. The nanoparticles BaTiO₃ with a modified surface are introduced into the polymer solution, achieving the desired volume ratio of the filler and the polymer matrix, and subjected to ultrasonic dispersion.

EFFECT: simplification of the method of producing composite materials in the form of polymer matrices filled with nanoparticles of oxide ferroelectrics with a modified surface, allowing to reduce the degree of aggregation of nanoparticles in the polymer.

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