METHOD OF FILM ELECTRET PRODUCTION Russian patent published in 2014 - IPC H01G7/02 

FIELD: electricity.

SUBSTANCE: method involves application of fluoropolymer layer onto metal electrode, application of discrete layer consisting of isolated nano-sized aggregates out of titan-containing nanostructures onto fluoropolymer surface, and further electreting in positive corona discharge. Before application of titan-containing nanostructures, fluoropolymer surface is triboelectrified by a dielectric to communicate negative charge to the surface.

EFFECT: enhanced magnitude and stability of positive charge surface density in film fluoropolymer electret.

2 dwg, 2 ex