METHOD FOR REGULATING SURFACE RESISTANCE OF PRODUCTS FROM ELECTRICALLY CONDUCTING POLYMER COMPOSITE MATERIALS MODIFIED WITH CARBON NANOTUBES Russian patent published in 2023 - IPC H01C17/242 B82Y30/00 

FIELD: electrical engineering.

SUBSTANCE: invention relates to methods for processing various products made of electrically conductive polymer composite materials (PCMs) modified with carbon nanotubes (CNTs) and can be used for the manufacture of sensitive elements in sensors, various sensors, electrodes and flexible polymer heaters. The method includes treating the surface of a PCM product with CNTs with pulsed laser radiation with a wavelength in the range of 350-1070 nm in air or in an inert atmosphere at a laser radiation energy density of up to 3.4 J/cm² and a laser pulse duration of no more than 10 ns, which leads to partial melting of the polymer matrix and immersion of CNTs into the surface layer of the PCM, accompanied by an increase in surface resistance, or surface treatment at a laser radiation energy density of 1.1 J/cm² and a laser pulse duration of more than 10 ns, which leads to thermal destruction of the polymer matrix of PCM with CNTs, accompanied by its destruction and the release of carbon nanotubes onto the surface of the product, which leads to a decrease in the surface resistance of the product.

EFFECT: regulating the surface resistance of a product by increasing or decreasing it.

1 cl, 5 dwg, 1 tbl, 20 ex