KR910011329A - Hollow fiber membrane with excellent permeability and its manufacturing method - Google Patents

Hollow fiber membrane with excellent permeability and its manufacturing method Download PDF

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Publication number
KR910011329A
KR910011329A KR1019890019971A KR890019971A KR910011329A KR 910011329 A KR910011329 A KR 910011329A KR 1019890019971 A KR1019890019971 A KR 1019890019971A KR 890019971 A KR890019971 A KR 890019971A KR 910011329 A KR910011329 A KR 910011329A
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South Korea
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hollow fiber
fiber membrane
thickness
support layer
pore
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KR1019890019971A
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Korean (ko)
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KR920001228B1 (en
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김정학
장재영
박정수
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이승동
주식회사 선경인더스트리
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Publication of KR910011329A publication Critical patent/KR910011329A/en
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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
    • B01D69/08—Hollow fibre membranes
    • B01D69/082—Hollow fibre membranes characterised by the cross-sectional shape of the fibre
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14—Ultrafiltration; Microfiltration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0002—Organic membrane manufacture
    • B01D67/0006—Organic membrane manufacture by chemical reactions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0002—Organic membrane manufacture
    • B01D67/0009—Organic membrane manufacture by phase separation, sol-gel transition, evaporation or solvent quenching
    • B01D67/0016—Coagulation
    • B01D67/00165—Composition of the coagulation baths
    • 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
    • B01D69/081—Hollow fibre membranes characterised by the fibre diameter
    • 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
    • B01D69/087—Details relating to the spinning process
    • 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
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/66—Polymers having sulfur in the main chain, with or without nitrogen, oxygen or carbon only
    • B01D71/68—Polysulfones; Polyethersulfones
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2323/00—Details relating to membrane preparation
    • B01D2323/15—Use of additives
    • B01D2323/18—Pore-control agents or pore formers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2323/00—Details relating to membrane preparation
    • B01D2323/15—Use of additives
    • B01D2323/216—Surfactants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2323/00—Details relating to membrane preparation
    • B01D2323/15—Use of additives
    • B01D2323/218—Additive materials
    • B01D2323/2181—Inorganic additives
    • B01D2323/21817—Salts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/02—Details relating to pores or porosity of the membranes
    • B01D2325/021—Pore shapes
    • B01D2325/0214—Tapered pores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/02—Details relating to pores or porosity of the membranes
    • B01D2325/022—Asymmetric membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/04—Characteristic thickness

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Manufacturing & Machinery (AREA)
  • Dispersion Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

내용 없음.No content.

Description

투과성이 우수한 중공사 막과 그 제조방법Hollow fiber membrane with excellent permeability and its manufacturing method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1a,b도 및 제1c도는 각각 종래 중공사 막에 있어서의 지지층의 단면구조를 나타낸 개략도이고,1A, 1B, and 1C are schematic diagrams showing the cross-sectional structure of the support layer in the conventional hollow fiber membrane, respectively.

제2a,b도는 각각 상기 제1도에서의 (b)구조를 갖는 중공사 막의 단면 및 A-A선단면을 나타낸 도면이며,2A and 2B are cross-sectional views and A-A cross-sectional views of hollow fiber membranes having the structure (b) in FIG. 1, respectively.

제3a,b도는 각각 상기 제1도에서의 (c)구조를 갖는 중공사 막의 단면 및 B-B선 단면을 나타낸 도면이고,3A and 3B are cross-sectional views and cross-sectional views taken along line B-B of the hollow fiber membrane having the structure (c) in FIG. 1, respectively.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 내부활성층 2 : 거대기공지지층1: internal active layer 2: macroporous support layer

3 : 미세기공지지층3: microporous support layer

Claims (11)

내부활성층과 거대기공지지층을 갖는 비대칭구조의 중공사 막에 있어서, 중공사 막을 이루는 원형단면에서 중앙으로부터 0.5~0.1㎛두께의 내부활성층(1)과, 그로부터 외부로 확장되어 있는 원뿔형 기공으로 형성된 50~400㎛두께의 거대기공지지층(2) 및, 중공사 막의 최외각에서 2~80㎛의 두께로 형성된 미세기공지지층(3)으로 구성된 것을 특징으로 하는 투과성이 우수한 중공사 막.In an asymmetric hollow fiber membrane having an inner active layer and a macroporous support layer, the inner active layer 1 having a thickness of 0.5 to 0.1 µm from the center and conical pores extending outwardly therefrom in a circular cross section constituting the hollow fiber membrane A hollow fiber membrane having excellent permeability, comprising a macroporous support layer (2) having a thickness of ˜400 μm and a microporous support layer (3) formed at a thickness of 2 to 80 μm at the outermost portion of the hollow fiber membrane. 제1항에 있어서, 상기 거대기공지지층(2)은 원뿔형의 기공이 높이(길이)/밑면이 4∼20이고, 중공사 막두께에 대해 0.96~0.84배의 길이로 형성되어 있는 것을 특징으로 하는 중공사 막.The method of claim 1, wherein the macroporous support layer (2) is characterized in that the conical pores have a height (length) / bottom surface of 4 to 20, the length of the 0.96 ~ 0.84 times the hollow fiber film thickness. Hollow fiber membrane. 제1항에 있어서, 상기 미세기공지지층(3)은 중공사막 두께의 0.04∼0.16배의 두께를 갖도록 형성되어 있는 것을 특징으로 하는 중공사 막.The hollow fiber membrane according to claim 1, wherein the microporous support layer (3) is formed to have a thickness of 0.04 to 0.16 times the thickness of the hollow fiber membrane. 제1항에 있어서, 상기 중공사 막은 그 크기가 중공사의 외부직경 0.4∼2.2mm이고 내부직경이 0.3~1.2㎜이며, 외부직경/내부직경의 비가 1.4~1.8인것을 특징으로 하는 중공사 막.The hollow fiber membrane according to claim 1, wherein the hollow fiber membrane has a size of 0.4 to 2.2 mm in outer diameter, 0.3 to 1.2 mm in inner diameter, and 1.4 to 1.8 in outer diameter / inner diameter. 내부활성층과 거대기공지지층을 갖는 비대칭구조의 중공사막에 있어서, 중공사 막을 이루는 원형 단면에서 중앙으로부터 0.5~0.1㎛두께의 내부활성층(1)과, 1㎛이하 두께의 다공성층, 그로부터 외부로 확장되어 있는 원뿔형 기공으로 형성된 50~400㎛두께의 거대기공지지층(2) 및, 중공사막의 최외각에서 2~80㎛의 두께로 형성된 미세기공지지층(3)으로 구성된 것을 특징으로 하는 투과성이 우수한 중공사 막.In an asymmetric hollow fiber membrane having an inner active layer and a macroporous support layer, an inner active layer 1 having a thickness of 0.5 to 0.1 µm from the center, a porous layer having a thickness of 1 µm or less, and extending outward from the center in a circular cross section constituting the hollow fiber membrane Hollow permeability characterized in that it consists of a large pore support layer (2) having a thickness of 50 ~ 400㎛ formed of conical pores and a microporous support layer (3) formed at a thickness of 2 ~ 80㎛ at the outermost part of the hollow fiber membrane desert. 제5항에 있어서, 상기 거대기공지지층(2)은 원뿔형의 기공이 높이(길이)/밑면이 4~20이고, 중공사 막두께에 대해 0.96~0.84배의 길이로 형성되어 있는 것을 특징으로 하는 중공사 막.The method of claim 5, wherein the macroporous support layer (2) is characterized in that the conical pores have a height (length) / bottom 4 ~ 20, the length of the 0.96 ~ 0.84 times the hollow fiber film thickness. Hollow fiber membrane. 제5항에 있어서, 상기 미세기공지지층(3)은 중공사막 두께의 0.04~0.16배의 두께를 갖도륵 형성되어 있는 것을 특징으로 하는 중공사 막.6. The hollow fiber membrane according to claim 5, wherein the microporous support layer (3) is formed even with a thickness of 0.04 to 0.16 times the thickness of the hollow fiber membrane. 폴리머, 기공형성제, 무기염 및 계면활성제 등으로 이루어진 방사용액과, 내부응고제, 외부응고제, 등을 이용하여 습식방사 방법이나 건, 습식방사 방법으로 비대칭구조의 중공사 막을 제조함에 있어서, 상기 방사용액중에서 폴리머성분으로 폴리술폰(poly sulfone)이 15∼23wt%, 주 기공형성제로 메톡시에탄올이나 메탄올, 에탄올, 포름아마이드 또는 아세톤중에서 선택된 것이 25∼35wt%, 무기염이 2∼10wt% 그리고 계면활성제가 2~5wt% 함유되어 있는 방사용액을 사용하고, 8∼30m/min의 방사속도로 방사하여서 제조함을 특징으로 하는 투과성이 우수한 중공사 막의 제조방법.In the manufacturing of the asymmetric hollow fiber membrane by a wet spinning method, a dry spinning method, or a wet spinning method using a spinning solution composed of a polymer, a pore-forming agent, an inorganic salt, a surfactant, and the like, an internal coagulant, an external coagulant, and the like, 15 to 23 wt% of polysulfone as a polymer in the solution, 25 to 35 wt% of methoxyethanol, methanol, ethanol, formamide or acetone as main pore-forming agents, and 2 to 10 wt% of inorganic salts A method for producing a hollow fiber membrane having excellent permeability, characterized in that it is produced by spinning at a spinning speed of 8 to 30 m / min, using a spinning solution containing 2 to 5 wt% of the active agent. 제8항에 있어서, 상기 주기공형성제는 그 주기공형성제 100에 대해 DMSD를 제1∼50의 비율로 혼합시켜서 사용함을 특징으로 하는 중공사 막의 제조방법.The method of claim 8, wherein the cycle pore-forming agent is used by mixing DMSD at a ratio of 1 to 50 with respect to the cycle pore-forming agent 100. 제8항에 있어서, 상기 계면활성제는 양이온성 계면활성제로서 소디움도데실 설페이트를 사용하거나 비이온성 계면활성제로서 분자량 200의 폴리에틸렌글리콜을 사용하여서 됨을 특징으로 하는 중공사 막의 제조방법.The method according to claim 8, wherein the surfactant is made of sodium dodecyl sulfate as the cationic surfactant or polyethylene glycol having a molecular weight of 200 as the nonionic surfactant. 제8항에 있어서, 상기 외부응고제로서는 물 : 소디움도데실설페이트를 98 : 2의 비율로 혼합하여 사용하는 것을 특징으로 하는 중공사 막의 제조방법.The method of manufacturing a hollow fiber membrane according to claim 8, wherein water: sodium dodecyl sulfate is used in a ratio of 98: 2 by mixing as the external coagulant. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019890019971A 1989-12-28 1989-12-28 Porous membrane and manufacturing method thereof KR920001228B1 (en)

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KR1019890019971A KR920001228B1 (en) 1989-12-28 1989-12-28 Porous membrane and manufacturing method thereof

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KR910011329A true KR910011329A (en) 1991-08-07
KR920001228B1 KR920001228B1 (en) 1992-02-08

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160080376A (en) * 2014-12-29 2016-07-08 도레이케미칼 주식회사 Hollow fiber type Forward Osmosis filtration membrane and the manufacturing method thereby
CN117482752A (en) * 2024-01-02 2024-02-02 赛普(杭州)过滤科技有限公司 Anisotropic micro-filtration membrane and preparation method and application thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102048428B1 (en) * 2018-02-08 2019-11-25 경상대학교산학협력단 hollow fiber membrane for water treatement and preparation method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160080376A (en) * 2014-12-29 2016-07-08 도레이케미칼 주식회사 Hollow fiber type Forward Osmosis filtration membrane and the manufacturing method thereby
CN117482752A (en) * 2024-01-02 2024-02-02 赛普(杭州)过滤科技有限公司 Anisotropic micro-filtration membrane and preparation method and application thereof
CN117482752B (en) * 2024-01-02 2024-04-19 赛普(杭州)过滤科技有限公司 Anisotropic micro-filtration membrane and preparation method and application thereof

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