P84 needled felt is the Austria (Lenzing) high temperature resistant filter materials made of polyimide fiber, has the following advantages: 1, especially significant temperature tolerance. 2, excellent resistance to acid and alkali resistance is good. 3, low backwashing pressure, high rate of filter cake to play off. 4, working temperature 260 ℃, the instantaneous working temperature 280 ℃, 26% limit oxygen index. P84 needled felt used in LiQingChang, cement plants, waste incinerators, coal fired boiler and other occasions, is a new type of high temperature resistant filter material. P84 needled filter felt physical indexes and performance