Chemical resistance of polyphenylene sulfide needle

The basic idea of this paper is to simulate use of the environment of high temperature filter material and study chemical resistance of needle-punched nonwoven fabric made from polyphenylene sulfide (PPS). An orthogonal test was designed to investigate the interaction effect of various factors, namely concentration of hydrochloric acid and sodium hydroxide, treatment time and treatment temperature, on the needle-punched nonwoven fabric. The concentration of hydrochloric acid and sodium hydroxide and treatment time were found to have important effects on mechanical property under the condition of 0.1 significant level. While needle-punched nonwoven fabric made from PPS was still keeping its excellent breaking strength, only less than the 10% drop under the condition of 24 hours in 12 mol/L hydrochloric acid at 80 degrees C.