| 摘要 |
fibrous filter media and articles on their bases. SUBSTANCE: method is realized with use of styrene copolymer with acrylonitrile and fiber diameter of 1-10 mcm from spinning solution containing dichloroethane, electrolytic additives and solvents from series including acetone, methyl ethyl ketone, or ethyl acetate, or butyl acetate. Filter medium has surface density of 20-80 g/sq.m and aerodynamic resistance of 3-60 Pa at air flow velocity of 1 cm/s. Respirator of LEPESTOK type is manufactured from proposed filter medium. EFFECT: improved operation characteristics of articles manufactured from proposed filter medium. 3 cl, 2 tbl, 1 ex |
