WO2019012727A1 - Membrane à fibres creuses et procédé de fabrication de membrane à fibres creuses - Google Patents

Membrane à fibres creuses et procédé de fabrication de membrane à fibres creuses Download PDF

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Publication number
WO2019012727A1
WO2019012727A1 PCT/JP2018/006770 JP2018006770W WO2019012727A1 WO 2019012727 A1 WO2019012727 A1 WO 2019012727A1 JP 2018006770 W JP2018006770 W JP 2018006770W WO 2019012727 A1 WO2019012727 A1 WO 2019012727A1
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WIPO (PCT)
Prior art keywords
support
hollow fiber
fiber membrane
bonding layer
sheet
Prior art date
Application number
PCT/JP2018/006770
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English (en)
Japanese (ja)
Inventor
大輝 宮田
Original Assignee
住友電気工業株式会社
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Publication date
Application filed by 住友電気工業株式会社 filed Critical 住友電気工業株式会社
Priority to CN201880035340.4A priority Critical patent/CN110691641B/zh
Publication of WO2019012727A1 publication Critical patent/WO2019012727A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/08—Hollow fibre membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/10—Supported membranes; Membrane supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/12—Composite membranes; Ultra-thin membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/12—Composite membranes; Ultra-thin membranes
    • B01D69/1213—Laminated layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/30—Polyalkenyl halides
    • B01D71/32—Polyalkenyl halides containing fluorine atoms
    • B01D71/36—Polytetrafluoroethene

Definitions

  • the present invention relates to a hollow fiber membrane and a method for producing the hollow fiber membrane.
  • hollow fiber membranes are known as filtration membranes for water treatment.
  • the hollow fiber membrane is an elongated tubular filtration membrane closed at one end, which filters the water to be treated coming in contact from the outside to obtain filtrate water inside.
  • a porous stretched tube made of polytetrafluoroethylene is used as a support, and a filter layer is provided on the outer surface of the support layer (Patent Document 1), and a yarn composed of plural resin fine wires The thing which equips the outer surface of this support body with a porous membrane layer is proposed as a support body (patent document 2).
  • a strip-like porous resin sheet (filtration layer) is spirally wound on the outer surface of a porous stretched tube (support) made of polytetrafluoroethylene, and the support and filtration layer are formed. It welds at temperature (350 degreeC) more than these melting
  • a membrane forming solution of a porous membrane layer is applied to the outer surface of a hollow braid (support) which is knitted with a plurality of resin fine wires, and a membrane is formed in the support
  • the porous membrane layer is formed by coagulating the membrane-forming undiluted solution in a state in which the undiluted solution has entered, and the adhesive strength of the support and the porous membrane layer is improved.
  • the hollow fiber membrane according to one aspect of the present invention is formed of one or more cords, and is laminated on a porous hollow support and the outer surface of the support, at least a portion of which is on the support.
  • a method of manufacturing a hollow fiber membrane according to another aspect of the present invention comprises the steps of: thermally laminating a porous bonding layer and a porous filtration sheet; and hollow having porosity and being knitted with one or more strands. Contacting the outer surface of the support and the bonding layer side of the sheet after the heat lamination step, and thermally laminating the support and the sheet after the heat lamination step.
  • a hollow fiber membrane for water treatment is required to have mechanical permeability and chemical resistance as well as constant water permeability.
  • the hollow fiber membrane of Patent Document 1 has a configuration in which a filtration layer is directly bonded to the support using a stretched porous body having a not very high tensile strength as a support, so the machine when the hollow fiber membrane is bent and deformed Further improvements are needed to improve the durability.
  • the hollow fiber membrane of Patent Document 2 it is necessary to select a film forming solution which can be solidified as a material of the porous membrane layer, and therefore, polytetrafluoroethylene or the like having high chemical resistance can be used as the porous membrane layer.
  • the material of the porous membrane layer is limited.
  • the present invention has been made based on the above circumstances, and it is an object of the present invention to provide a hollow fiber membrane compatible with both chemical resistance and mechanical durability and a method for producing the hollow fiber membrane. .
  • the present invention can provide a hollow fiber membrane compatible with chemical resistance and mechanical durability.
  • the hollow fiber membrane according to one aspect of the present invention is formed of one or more cords, and is laminated on a porous hollow support and the outer surface of the support, at least a portion of which is on the support.
  • the hollow fiber membrane comprises a bonding layer between the support and the filtration sheet, and the bonding layer is welded to the support and the filtration sheet to bond them, so that the support and the filtration sheet can be strongly bonded, and the support And the material of the filter sheet can be selected relatively freely.
  • the support of the hollow fiber membrane is knitted with one or more cords, it has high tensile strength and appropriate flexibility.
  • the hollow fiber membrane uses a support having high tensile strength as a substrate, and the filtration sheet is bonded to the support via the bonding layer, so that the filtration sheet peels off from the support even when it is bent and deformed. It is difficult, and the pressure resistance at the time of filtration or backwashing is high. That is, since the hollow fiber membrane can be selected as one having high chemical resistance as the material of the support and the filter sheet, and structurally improves the mechanical durability, the chemical resistance and the mechanical can be improved. It is compatible with durability.
  • the support is formed in a tubular shape, the filter sheet is formed in a band shape, and the filter sheet is wound in a spiral and in a stripe shape on the outer surface of the support via the bonding layer. Good to be turned. Thus, the support and the filter sheet are easily and reliably bonded via the bonding layer.
  • the said string body prefferably knitted by 8 or more and 32 or less resin fine wire.
  • the mechanical strength of the support is further improved by the cords that knit the support being knitted with 8 or more and 32 or less resin thin wires.
  • the bonding layer may be a non-woven fabric or a porous resin.
  • the main component of the filter sheet is polytetrafluoroethylene.
  • the hollow fiber membrane is improved in chemical resistance by being used for a filtration sheet on which polytetrafluoroethylene having high chemical resistance is disposed on the outer surface.
  • the main component indicates a component with the highest content, for example, a component with a content of 50% by mass or more.
  • the average thickness of the filtration sheet may be 12 ⁇ m to 100 ⁇ m
  • the average pore diameter of the filtration sheet may be 0.01 ⁇ m to 0.45 ⁇ m
  • the bubble point of the hollow fiber membrane may be 80 kPa to 200 kPa.
  • the average pore diameter refers to a value obtained by microscopically observing 10 or more holes and averaging the average value of the maximum diameter of the holes and the diameter in the direction orthogonal to the maximum diameter in the entire sample.
  • the bubble point is a value measured according to JIS-K 3832 (1990) using isopropyl alcohol.
  • a method for producing a hollow fiber membrane according to another aspect of the present invention is a method for producing a hollow fiber membrane, comprising the steps of: thermally laminating a porous bonding layer and a porous filtration sheet; The outer surface of a hollow support which is knitted with a cord and has porosity is brought into contact with the bonding layer side of the sheet after the heat lamination step, and the support and the sheet after the heat lamination step are thermally laminated And a process.
  • the bonding layer of the sheet is welded to the support, so that the support and the filtration sheet are relatively easy to form via the bonding layer.
  • the method for producing a hollow fiber membrane can relatively easily produce a hollow fiber membrane having both chemical resistance and mechanical durability.
  • the hollow fiber membrane 1 of FIG. 1 and FIG. 2 is knitted with one or more cords and is laminated on a porous hollow support 2 and the outer surface of the support 2, at least a part of which is the support 2. And a porous filtration sheet 4 laminated on the side opposite to the support 2 side of the bonding layer 3 and in which at least a part of the bonding layer 3 is welded.
  • the cords for knitting the support 2 are knitted with 8 or more and 32 or less resin thin wires, and the support 2 is formed in a tubular shape.
  • the bonding layer 3 is a non-woven fabric or a porous resin.
  • the filtration sheet 4 is formed in a band shape.
  • the main component of the filtration sheet 4 is polytetrafluoroethylene, the average thickness of the filtration sheet 4 is 12 ⁇ m to 100 ⁇ m, and the average pore diameter of the filtration sheet 4 is 0.01 ⁇ m to 0.45 ⁇ m.
  • the filter sheet 4 is wound in a spiral and in a stripe shape on the outer surface of the support 2 via the bonding layer 3.
  • the bubble point of the hollow fiber membrane 1 is 80 kPa or more and 200 kPa or less.
  • the hollow fiber membrane 1 is a hollow fiber membrane used for water treatment, and as shown in FIG. 1, the bonding layer 3 and the filtration sheet 4 are laminated on the outer surface of the support 2 in this order. . As shown in FIG. 2, the hollow fiber membrane 1 is formed in a cylindrical shape so as to filter the water to be treated coming in contact with the filtration sheet 4 and obtain filtered water in the hollow portion 5 inside the support 2. .
  • the lower limit of the bubble point of the hollow fiber membrane 1 is preferably 80 kPa, more preferably 100 kPa, and still more preferably 120 kPa.
  • an upper limit of the bubble point of hollow fiber 1 200 kPa is preferred, 180 kPa is more preferred, and 160 kPa is still more preferred. If the bubble point of the hollow fiber membrane 1 does not reach the above lower limit, the water to be treated may not be filtered sufficiently. Conversely, if the bubble point of the hollow fiber membrane 1 exceeds the above upper limit, the water flow resistance may increase, and the filtration efficiency may decrease.
  • the support 2 is a member to be a base of the hollow fiber membrane 1 and is formed in a tubular shape.
  • the support 2 is knitted with one or more cords, and has a porosity that allows filtered water to permeate through the interstices of the cords.
  • a hollow portion 5 is formed inside the support 2.
  • the lower limit of the average thickness (average thickness) of the support 2 is preferably 0.1 mm, more preferably 0.3 mm, and still more preferably 0.5 mm.
  • the upper limit of the average thickness of the support 2 is preferably 2 mm, more preferably 1.7 mm, and still more preferably 1.5 mm. If the average thickness of the support 2 is less than the above lower limit, the mechanical strength of the support 2 may be insufficient. Conversely, when the average thickness of the support 2 exceeds the above upper limit, the hollow fiber membrane 1 becomes too thick, and the number density of the hollow fiber membranes 1 decreases when a plurality of hollow fiber membranes 1 are used, The filtration efficiency may be reduced.
  • the cords for knitting the support 2 are knitted with a plurality of resin thin wires in order to improve the mechanical strength.
  • the material of the resin fine wire is not particularly limited, but for example, polyester such as polyethylene terephthalate, or a resin containing polyethylene or polypropylene as a main component is used.
  • the number of resin thin lines which knit a string As a minimum of the number of resin thin lines which knit a string, eight are preferred, ten are more preferred, and 12 are still more preferred. On the other hand, as a maximum of the number of resin thin lines which knit a string, 32 are preferred, 28 are more preferred, and 24 is more preferred. If the number of resin thin wires for knitting the cords is less than the above lower limit, the mechanical strength of the cords may be insufficient. On the contrary, when the number of resin thin wires which knit a string exceeds the above-mentioned upper limit, there is a possibility that the manufacturing cost of a string may increase.
  • the bonding layer 3 is an intermediate layer for bonding the support 2 and the filtration sheet 4 by welding the surface in contact with the support 2 to the support 2 and welding the surface in contact with the filtration sheet 4 to the filtration sheet 4. It is laminated between the outer surface of the cylindrical support 2 and the inner surface of the filtration sheet 4.
  • the bonding layer 3 dissolves by a predetermined thickness from the surface in contact with the support 2, is bonded to the support 2 in this dissolved thickness region, and dissolves by a predetermined thickness from the surface in contact with the filtration sheet 4, It is joined to filtration sheet 4 in this dissolved thickness field.
  • As the bonding layer 3 a porous resin or non-woven fabric obtained by heat-treating a resin powder is used.
  • the material of the porous resin or the non-woven fabric is not particularly limited.
  • a porous resin containing polyester such as polyethylene terephthalate, polyethylene or polypropylene as a main component is used.
  • the bonding layer 3 is preferably made of the same material as the support 2 from the viewpoint of improving the affinity for bonding with the support 2.
  • the lower limit of the average thickness of the bonding layer 3 is preferably 10 ⁇ m, more preferably 20 ⁇ m, and still more preferably 30 ⁇ m.
  • the upper limit of the average thickness of the bonding layer 3 is preferably 200 ⁇ m, more preferably 150 ⁇ m, and still more preferably 100 ⁇ m. If the average thickness of the bonding layer 3 is less than the above lower limit, welding to the support 2 and the filtration sheet 4 may be insufficient, and the bonding strength of the bonding layer 3 may be insufficient. Conversely, when the average thickness of the bonding layer 3 exceeds the above upper limit, the hollow fiber membrane 1 becomes too thick, and the number density of the hollow fiber membrane 1 decreases when a plurality of hollow fiber membranes 1 are used, The filtration efficiency may be reduced.
  • the melting point is preferably equal to or lower than the melting point of the support 2 and lower than the melting point of the filtration sheet 4.
  • the filter sheet 4 when polytetrafluoroethylene (melting point about 327 ° C.) is used as the filter sheet 4 and polyethylene terephthalate, polyethylene or polypropylene (melting point about 110 ° C. to 260 ° C.) is used as the support 2, the support 2 is used as the bonding layer 3. It is preferable to use the same material as that of the above or the melting point of the support 2 or less.
  • the filtration sheet 4 is a strip-like porous sheet disposed on the outer surface of the bonding layer 3 and having a function of filtering the water to be treated. It is preferable that a porous resin having chemical resistance be used as the filtration sheet 4, and a porous resin containing polytetrafluoroethylene as a main component is used.
  • the filtration sheet 4 is disposed so as to cover the outer surface of the hollow fiber membrane 1 by being wound around the outer surface of the cylindrical support 2 in a spiral shape and in a stripe shape.
  • the filter sheet 4 is wound on the outer surface of the support 2 without gaps so that the side portions overlap.
  • the hollow fiber membrane 1 has the overlapping portion 6 in which the filtration sheet 4 is overlapped in a spiral shape and a stripe shape.
  • the support 2, the bonding layer 3, the filtration sheet 4, the bonding layer 3 and the filtration sheet 4 are bonded in this order.
  • the lower limit of the average thickness of the filtration sheet 4 is preferably 12 ⁇ m, more preferably 15 ⁇ m, and still more preferably 18 ⁇ m.
  • an upper limit of average thickness of filtration sheet 4 100 micrometers is preferred, 80 micrometers are more preferred, and 60 micrometers is still more preferred. If the average thickness of the filtration sheet 4 is less than the above lower limit, the water to be treated may not be filtered sufficiently. Conversely, if the average thickness of the filtration sheet 4 exceeds the above upper limit, the water flow resistance may increase, and the filtration efficiency may decrease.
  • the lower limit of the average pore diameter of the filtration sheet 4 is preferably 0.01 ⁇ m, more preferably 0.05 ⁇ m, and still more preferably 0.10 ⁇ m.
  • the upper limit of the average pore diameter of the filtration sheet 4 is preferably 0.45 ⁇ m, more preferably 0.40 ⁇ m, and still more preferably 0.35 ⁇ m. If the average pore diameter of the filtration sheet 4 is less than the above lower limit, the water flow resistance may be increased, and the filtration efficiency may be reduced. Conversely, if the average pore diameter of the filtration sheet 4 exceeds the above upper limit, the water to be treated may not be filtered sufficiently.
  • the method for producing the hollow fiber membrane is a method for producing the hollow fiber membrane 1, and the first laminating step of thermally laminating the porous bonding layer 3 and the porous filtration sheet 4; and one or more cords Forming an outer surface of the hollow support 2 having porosity and contacting the bonding layer 3 side of the sheet after the first lamination step, and thermally laminating the support 2 and the sheet after the first lamination step And 2) laminating.
  • the bonding layer 3 and the filtration sheet 4 are thermally laminated in a state where the bonding layer 3 is laminated so as to overlap in plan view on one surface of the filtration sheet 4.
  • Weld As the bonding layer 3, one having a melting point lower than that of the filtration sheet 4 is used.
  • the method of thermal lamination is not particularly limited.
  • a method of welding the bonding layer 3 to the filtration sheet 4 by melting one surface side of the bonding layer 3 by a predetermined thickness and then cooling in a state where the filtration sheet 4 is in contact with the melting surface
  • heating is performed from the filtration sheet 4 side to dissolve the bonding layer 3 in the vicinity of the filtration sheet 4 by a predetermined thickness, and then cooled.
  • the method of welding is used.
  • the bonding layer 3 preferably has a predetermined thickness dissolved at a temperature about 10 ° C. to 50 ° C. higher than the melting point of the bonding layer 3.
  • the laminated sheet after the first laminating step is processed into a band shape using a method such as cutting before the second laminating step.
  • a method such as cutting before the second laminating step.
  • the shape of the lamination sheet after the 1st lamination process should just be strip shape, it changes to the method of processing the lamination sheet after the 1st lamination step, for example, uses the strip-shaped filtration sheet 4 for the 1st lamination process.
  • a method may be employed to obtain a band-like laminated sheet by performing.
  • the laminated sheet and the support 2 are thermally laminated in a state where the bonding layer 3 side of the laminated sheet after the first laminating step is in contact with the outer surface of the cylindrical support 2. Thereby, the bonding layer 3 is welded to the support 2.
  • the same material as that of the bonding layer 3 may be used, or a material of the melting point or more of the bonding layer 3 may be used.
  • the strip-like laminated sheet and the support 2 are laminated, as shown in FIG. 2, the strip-like laminated sheet is wound in a spiral shape and a stripe form on the outer surface of the cylindrical support 2.
  • the bonding layer 3 and the filtration sheet 4 are laminated in this order on the outer surface of the support 2.
  • the outer surface of the manufactured hollow fiber membrane 1 needs to be covered with the filtration sheet 4 without a gap, so the strip-like laminated sheet has a spiral shape and a stripe shape with respect to the support 2 so that the side portions overlap. It is wound around.
  • the method of thermal lamination is not particularly limited.
  • the strip-shaped laminated sheet is formed on the support 2 while bringing the outer surface of the support 2 and the upper surface of the laminated sheet into contact with the dissolution surface.
  • a method of welding the bonding layer 3 to the support 2 by winding in a spiral shape and a stripe shape is used.
  • the bonding layer 3 preferably has a predetermined thickness dissolved at a temperature about 10 ° C. to 50 ° C. higher than the melting point of the bonding layer 3.
  • the hollow fiber membrane 1 includes the bonding layer 3 between the support 2 and the filtration sheet 4, and the bonding layer 3 is welded to the support 2 and the filtration sheet 4 to bond them, so the support 2 and the filtration sheet Bond 4 strongly.
  • the support 2 of the hollow fiber membrane 1 has high tensile strength and appropriate flexibility because it is knitted by a cord body knitted with 8 or more and 32 or less resin fine wires. Since the bonding layer 3 of the hollow fiber membrane 1 is a non-woven fabric or a porous resin, when the hollow fiber membrane 1 is bent and deformed, it is appropriately deformed to disperse stress.
  • the hollow fiber membrane 1 uses the support 2 having high tensile strength as a base, and the filtration sheet 4 is joined to the support 2 via the bonding layer 3, so that the filtration sheet 4 is also deformed when bending. And the joining layer 3 is hard to peel from the support body 2, and the pressure resistance at the time of filtration or backwashing is high.
  • the polytetrafluoroethylene with high chemical resistance is used for the filtration sheet 4 of the said hollow fiber membrane 1, the said hollow fiber membrane 1 makes chemical resistance and mechanical durability compatible.
  • the hollow fiber membrane 1 has a bubble point of 80 kPa or more and 200 kPa or less, water permeability and impurity removal performance are adjusted in a well-balanced manner.
  • the welding layer 3 is welded to the filtration sheet 4 and then the welding layer 3 of this sheet is welded to the support 2.
  • the filter sheet 4 can be joined relatively easily. Further, according to the method of manufacturing the hollow fiber membrane, since the strip-shaped filtration sheet 4 is spirally and stripe-shaped so that the side portions overlap with the outer surface of the cylindrical support 2, the outer surface is The hollow fiber membrane 1 covered with the filtration sheet 4 without any gap can be manufactured, and the support 2 and the filtration sheet 4 can be joined easily and reliably through the joining layer 3.
  • the hollow part 5 should just be formed inside the support body 2, and the shape of the support body 2 is not limited to a cylinder shape.
  • the strip-shaped filtration sheet 4 is spirally wound around the outer surface of the cylindrical support 2 in the form of stripes, but the filtration sheet 4 is supported via the bonding layer 3 As long as it is a laminated structure bonded to the outer surface of the body 2, the support 2, the bonding layer 3 and the filtration sheet 4 may be bonded by another procedure.
  • the hollow fiber membrane of the present invention and the hollow fiber membrane produced by the method of producing a hollow fiber membrane of the present invention can achieve both chemical resistance and mechanical durability.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

Une membrane à fibres creuses selon un mode de réalisation de la présente invention comprend : un corps de support creux poreux qui est formé par un ou plusieurs corps de cordes; une couche de jonction poreuse qui est stratifiée sur la surface extérieure du corps de support et dont au moins une partie est fusionnée au corps de support; et une feuille de filtration poreuse qui est stratifiée sur le côté de la couche de jonction à l'opposé du corps de support et dont au moins une partie est fusionnée à la couche de jonction.
PCT/JP2018/006770 2017-07-11 2018-02-23 Membrane à fibres creuses et procédé de fabrication de membrane à fibres creuses WO2019012727A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201880035340.4A CN110691641B (zh) 2017-07-11 2018-02-23 中空纤维膜及中空纤维膜的制造方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017135366A JP6854412B2 (ja) 2017-07-11 2017-07-11 中空糸膜及び中空糸膜の製造方法
JP2017-135366 2017-07-11

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Publication Number Publication Date
WO2019012727A1 true WO2019012727A1 (fr) 2019-01-17

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CN (1) CN110691641B (fr)
WO (1) WO2019012727A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111111471A (zh) * 2020-01-14 2020-05-08 浙江开创环保科技股份有限公司 具有高剥离强度的ptfe中空纤维复合膜及其制备方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52128646U (fr) * 1977-04-07 1977-09-30
JPH06106037A (ja) * 1992-09-25 1994-04-19 Sumitomo Electric Ind Ltd チューブ状多孔質複層膜及びその製造方法
JP2010042329A (ja) * 2008-08-08 2010-02-25 Sumitomo Electric Fine Polymer Inc 中空糸膜モジュール。

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3214222B2 (ja) * 1994-03-22 2001-10-02 住友電気工業株式会社 チューブ状多孔質複合物及びその製造方法
JPH11262639A (ja) * 1998-03-16 1999-09-28 Mitsubishi Rayon Co Ltd 中空糸膜モジュール
DE10343456B3 (de) * 2003-09-19 2004-12-02 Poromedia Gmbh Filtermedium
JP4748655B2 (ja) * 2004-06-25 2011-08-17 ミリポア・コーポレイション 限外濾過膜および製造方法
AU2006300331C1 (en) * 2005-10-13 2011-01-27 Asahi Kasei Chemicals Corporation Porous multilayered hollow-fiber membrane and process for producing the same
TWI377978B (en) * 2008-05-21 2012-12-01 Mitsubishi Rayon Co Hollow porous film and manufacturing method thereof
JP2012176361A (ja) * 2011-02-25 2012-09-13 Sumitomo Electric Fine Polymer Inc 多孔質複層フィルター
JP2015006653A (ja) * 2013-05-30 2015-01-15 住友電気工業株式会社 濾過モジュール及び濾過装置
US9610548B2 (en) * 2014-02-28 2017-04-04 Pall Corporation Composite porous polymeric membrane with high void volume
CN104117289B (zh) * 2014-07-29 2017-07-11 枫科(北京)膜技术有限公司 一种增强复合支撑中空纤维膜及其制备方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52128646U (fr) * 1977-04-07 1977-09-30
JPH06106037A (ja) * 1992-09-25 1994-04-19 Sumitomo Electric Ind Ltd チューブ状多孔質複層膜及びその製造方法
JP2010042329A (ja) * 2008-08-08 2010-02-25 Sumitomo Electric Fine Polymer Inc 中空糸膜モジュール。

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111111471A (zh) * 2020-01-14 2020-05-08 浙江开创环保科技股份有限公司 具有高剥离强度的ptfe中空纤维复合膜及其制备方法

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JP6854412B2 (ja) 2021-04-07
JP2019013914A (ja) 2019-01-31
CN110691641B (zh) 2022-12-09
CN110691641A (zh) 2020-01-14

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