COMPOSITE MATERIAL FOR ALKALI STORAGE BATTERY SEPARATORS AND ITS PRODUCTION PROCESS Russian patent published in 2006 - IPC H01M2/16 H01M10/28 

FIELD: composite materials including porous dielectric ones for separators of chemical current supplies.

SUBSTANCE: proposed composite material for alkali storage batteries has following chemical composition, mass percent: mixture of discrete and staple fibers, 45-65; polymeric binder, 7-10; zirconium dioxide, the rest. Novelty is that composite material production process includes dispersion of zirconium dioxide fibers in liquid medium to obtain homogeneous suspension, introduction of zirconium dioxide into suspension obtained, production of half-finished separator by vacuum filtration through porous backing, drying, and compression of half-finished separator. Zirconium-dioxide discrete and staple fibers where content of stable fibers of zirconium dioxide in source mixture amounts to 20-35 mass percent at staple fiber length-to-diameter ratio is (200-300) : 1 are dispersed and prior to compression the half-finished separator is coated with heat-resistant binder.

EFFECT: production of separators meeting specifications for aircraft alkali batteries.

6 cl, 1 tbl, 4 ex