WICKING NONWOVEN MAT FROM WET-LAID PROCESS

摘要

Examples of the present technology may include a method of making a non-woven fiber mat. The wet nonwoven fiber mat may include a first plurality of first glass fibers and a second plurality of second glass fibers. The first plurality of first glass fibers may have nominal diameters of less than 5 μm, and the second plurality of second glass fibers may have nominal diameters of greater than 6 μm. The method may further include curing the binder composition to produce the nonwoven fiber mat. The nonwoven fiber mat may have an average 40 wt. % sulfuric acid wick height of between about 1 cm and about 5 cm after exposure to 40 wt. % sulfuric acid for 10 minutes conducted according to method ISO8787, and the nonwoven fiber mat may have a total normalized tensile strength greater than 2 (lbf/in)/(lb/sq) for a sq (100 ft2).

主权项

1. A method of making a nonwoven fiber mat for use in a lead-acid battery, the method comprising:
adding a binder composition to a wet nonwoven fiber mat, wherein:
the wet nonwoven fiber mat comprises a first plurality of first glass fibers and a second plurality of second glass fibers,the first plurality of first glass fibers has nominal diameters of less than 5 μm,the second plurality of second glass fibers has nominal diameters of greater than 6 μm, andthe first plurality of first glass fibers comprises between about 10% and about 50% by weight of the combined weight of the first plurality of first glass fibers and the second plurality of second glass fibers; and curing the binder composition to produce the nonwoven fiber mat, wherein:
the nonwoven fiber mat has an average 40 wt. % sulfuric acid wick height of between about 1 cm and about 5 cm after exposure to 40 wt. % sulfuric acid for 10 minutes conducted according to method ISO8787, andthe nonwoven fiber mat has a total normalized tensile strength of greater than 2 (lbf/in)/(lb/sq).