POROUS FILM SUPPORT BODY, GAS SEPARATION MEMBRANE COMPOSITE BODY, METHOD FOR MANUFACTURING POROUS FILM SUPPORT BODY AND METHOD FOR MANUFACTURING GAS SEPARATION MEMBRANE COMPOSITE BODY

摘要

To provide a porous film support body in which pressure drop is low and on which a gas separation membrane can be satisfactorily laminated.SOLUTION: A porous film support body 2 comprising : a non-woven fabric 3 containing a water-repellent agent; and a porous film 4 which is provided on one surface of the non-woven fabric 3, and contains polyether sulfone. The porous film support body 2 in which preferably, the non-woven fabric 3 contains at least one kind of fiber selected from polyester, polyphenylene sulfide, polyamide, polyimide, and polyamide-imide, and has an angle of contact to water is 70° to 100° or less. The porous film support body 2 in which preferably, the non-woven fabric 3 contains at least one kind of fiber which has a melting point of 200°C or higher. It is desirable for the porous film support body 2 that a pressure loss is 8.0kPa when passing oxygen at a flow velocity of 5 cm/second.SELECTED DRAWING: Figure 1