The strength,moisture retention and vanadium resistance of ion exchange membranes were improved by introducing special materials into the tape casting process.
◮ Thickness and Basis Weight Properties
◮ Physical and Other Properties
◮ Hydrolytic Propertie
◮ Measurements taken with membrane conditioned to 23° ℃,50% RH.
◮ Conductivity measurements at 23 ℃,100% RH.
◮ A base titration procedure measures the equivalents of sulfonic acid group in the resin, and uses the measurement to calculate the acid capacity or equivalent weight of the membrane.
◮ Water content of membrane conditioned to 23*C and 50%RH(dry weight basis).
◮ Water uptake from dry membrane to conditioned in water at 100C for l hour(dry weight basis)