High temperature-and corrosion-resistance of PPS/PSA nonwoven filter material

The high temperature-and corrosion-resistance of PPS/PSA nonwoven filter materials with different blending ratios was tested,and the results showed that under different blending ratio conditions,needling number has regular influence on the porosity,permeability and strength of the nonwoven filter material.After high temperature treatment,no obvious change of porosity and permeability is observed and the regularity is not noticeable;and the impact of acid-base treatment on the porosity and permeability of the fabric is not remarkable,but the strength decreases with the increase of the concentration of acid and base.After treated with sodium hypochlorite(5% mass fraction),the porosity and permeability show faint change,but the strength reduces regularly as processing time increases.