公开(公告)号：US20240198289A1

公开(公告)日：2024-06-20

申请号：US18288440

申请日：2022-04-15

Applicant: NOK CORPORATION

Inventor： Matsuyoshi YAMASHITA ,  Yosuke ITO ,  Tsuyoshi EMOTO

IPC: B01D63/04 ,  B01D63/02

CPC classification number: B01D63/04 ,  B01D63/0233

Abstract: A hollow fiber membrane module having: a tubular case; a plurality of hollow fiber membranes disposed within the case; sealing and fixing parts that fix the hollow fiber membranes to each other at the ends of the plurality of hollow fiber membranes; and sealing parts that seal annular gaps between the case and the sealing and fixing parts. The sealing parts are bonded to the inner peripheral surface of the case and the outer peripheral surface of the sealing and fixing parts while being allowed to expand or contract in the direction in which the spacing of the gaps between the case and the sealing and fixing parts changes.

公开(公告)号：US20210268449A1

公开(公告)日：2021-09-02

申请号：US17253225

申请日：2019-06-20

Applicant: NOK CORPORATION

Inventor： Takayuki TAKAGI ,  Tsuyoshi EMOTO

IPC: B01D69/08 ,  B01D71/68 ,  B01D71/44 ,  H01M8/04119

Abstract: A method for producing a porous hollow fiber membrane for humidification, the method comprising dry-wet spinning a spinning dope comprising a water-soluble organic solvent solution composed of polyphenylsulfone resin and hydrophilic polyvinylpyrrolidone using water as a core liquid; then performing a crosslinking treatment at 120 to 220° C. for 1 to 20 hours; and then dipping the resultant in an acidic solution with a concentration of 5 to 500 ppm. The obtained porous hollow fiber membrane has improved hydrophilicity without impairing the wettability of the porous hollow fiber membrane. Since, humidification performance of the porous hollow fiber membrane alone can be improved, it is effective as a humidifying membrane for fuel cells.