WICKING NONWOVEN MAT FROM WET-LAID PROCESS

摘要

A method of making a non-woven fiber mat wherein 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).