High-performance pps fiber structure and production method and use thereof (as amended)

Abstract

The present invention discloses a high-performance PPS fiber structure and production method and use thereof. The high-performance PPS fiber structure is woven fabric made from PPS fibers in 0.1 to 12 μm cross sectional diameter, and the maximum pore size of the PPS fiber structure is 20 μm or smaller. The PPS fiber structure disclosed in the present invention has the advantages of high gas impermeability and good hydrophilicity, also has the advantages of simple process, low energy consumption and zero environmental pollution, and can be used in diaphragms for electrolytic apparatuses, high-temperature liquid filter materials and insulating materials.

1 . A high-performance PPS fiber structure, characterized in that, the PPS fiber structure is a woven fabric made from PPS fibers in 0.1 to 12 μm cross sectional diameter, and the maximum pore size of the PPS fiber structure is 20 μm or smaller. 
     
     
         2 . The high-performance PPS fiber structure according to  claim 1 , characterized in that, the warp yarns and weft yarns that form the PPS fiber structure are PPS staple yarns that have been suffered from hydrophilic treatment. 
     
     
         3 . The high-performance PPS fiber structure according to  claim 1 , characterized in that, the average pore size of the PPS fiber structure is 5 μm or smaller, and pores in 6 μm or smaller diameter account for 90% or above of all the pores in the fiber structure. 
     
     
         4 . The high-performance PPS fiber structure according to  claim 1 , characterized in that, the yarn count of PPS single yarns forming the woven fabric is 21 to 60 s. 
     
     
         5 . The high-performance PPS fiber structure according to  claim 1 , characterized in that, the twist factor of the PPS yarns forming the woven fabric is 180 to 350. 
     
     
         6 . The high-performance PPS fiber structure according to  claim 1 , characterized in that, the twist of the warp yarns is greater than or equal to the twist of the weft yarns in the PPS fiber structure. 
     
     
         7 . The high-performance PPS fiber structure according to  claim 4 , characterized in that, the ratio of the twist of the PPS yarns to the twist of the PPS single yarns is 0.2 to 1.0. 
     
     
         8 . The high-performance PPS fiber structure according to  claim 1 , characterized in that, the gas impermeability of the PPS fiber structure is 400 mmH 2 O or above. 
     
     
         9 . The high-performance PPS fiber structure according to  claim 1 , characterized in that, the area resistance of the PPS fiber structure is 60 mΩ·cm 2  or lower. 
     
     
         10 . A method for producing the high-performance PPS fiber structure according to  claim 1 , characterized in comprising the following steps:
 (1) cotton spinning process: processing PPS fibers in 0.1 to 12 μm cross sectional diameter by opening and cleaning, carding, drawing, roving, drafting the roving to obtain PPS single yarns with yarn count equal to 20 to 60 s and twist factor α equal to 200 to 310, processing the PPS single yarns by winding, doubling, twisting and thermoforming into PPS yarns with ply number equal to 1 to 6;   (2) weaving process: processing the obtained PPS yarns by warp beaming, drafting, reeding, and weaving, to obtain PPS woven fabric with cover factor equal to 2400 to 2900;   (3) post-finishing process: processing the obtained PPS woven fabric by scouring, water washing, drying, and thermoforming at 180 to 200° C.;   (4) hydrophilic treatment process: processing the thermoformed fabric by plasma hydrophilic treatment and/or sulfonated hydrophilic treatment, to obtain a finished product finally.   
     
     
         11 . The method for producing the high-performance PPS fiber structure according to  claim 10 , characterized in that, the PPS yarns obtained in the step (1) is processed by at least one of plasma treatment, sulfonation processing, and graft copolymerization, to obtain hydrophilic PPS yarns. 
     
     
         12 . Use of the high-performance PPS fiber structure according to  claim 1  in diaphragms for electrolytic apparatuses, high-temperature liquid filter materials and insulating materials.