METHOD OF MAKING POLYMER FILTRATION MATERIAL AND FILTRATION MATERIAL Russian patent published in 2013 - IPC B01D39/16 D04H1/56 B82B3/00 

FIELD: process engineering.

SUBSTANCE: invention relates to high-efficiency filtration materials for superfine cleaning of gases and air and ban be used in production of aerosol filters, individual means of respiratory system protection against various aerosols and, if combined with other filtration materials, as a finishing layer. Material with the structure of mix of micron and submicron fibres is produced by electrostatic forming of nonwoven material composed of two working polymer fibre-forming polysulfone-based solutions in electrostatic field at potential difference of 10-150 kV and weight hour space velocity of forming per one capillary of 0.1-0.43 cm³/min for microfibers and 0.01-0.12 cm³/min for submicron fibres. Material consists of polysulfone fibres 2.5-4.6 mcm and 0.08-0.17 mcm in diameter at relationship between lengths of micron and submicron fibres of 1:17-25 and features hydrodynamic resistance at filtration rate of 1 cm/c varying from 20 kPa to 30 kPa.

EFFECT: high-efficiency filtration materials for superfine cleaning of air and gases.

6 cl, 1 tbl, 16 ex