FIELD: electrical engineering.
SUBSTANCE: proposed absorbing-type storage-battery separator made in essence of homogeneous mixture of thermoplastic polymer and at least one inert filler is characterized in that inert filler is chosen from group incorporating pyrogenic silicon dioxide, deposited silicon dioxide, titanium dioxide, magnesium carbonate, magnesium oxide, and magnesium hydroxide, or their mixtures; separator bulk porosity is minimum 75% and extraction pore width is over 2 μm; pyrogenic silicon content is not over 18 volume percent. Such separator ensures optimal passage of fluid medium contained therein through storage battery.
EFFECT: enhanced tensile strength of separator.
12 cl, 3 ex
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