ELECTRET MATERIAL BASED ON POLYETHYLENE AND METHOD OF ITS MANUFACTURE Russian patent published in 2018 - IPC H01G7/02 B82B3/00 

FIELD: electricity.

SUBSTANCE: in the electret material, composed of a polyethylene film with a discrete layer of phosphorous oxide structure, synthesized on its surface, chemically related to polymeric matrix, the second discrete layer is synthesized, which consists of titanium oxide structures, chemically linked to the phosphorous oxide structures. The production method of electret material based on polyethylene involves the synthesis of phosphorous oxide structures on the surface of polyethylene film by sequential processing of the film with vapours of phosphorus trichloride, dried gas-carrier. After the synthesis of phosphorous oxide structures the synthesis of titanium tetrachloride structures is done by sequential processing of the film with titanium tetrachloride vapours, dried gas-carrier, water vapours and newly-dried gas-carrier with the subsequent corona electrising.

EFFECT: invention makes it possible to increase the value and thermostability of the surface density of the electret charge in polyethylene films.

2 cl, 1 dwg