KR930002425A - 폴리테트라플루오로에틸렌 다공성 필름 및 그의 제조방법 및 용도 - Google Patents

폴리테트라플루오로에틸렌 다공성 필름 및 그의 제조방법 및 용도 Download PDF

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KR930002425A
KR930002425A KR1019920013185A KR920013185A KR930002425A KR 930002425 A KR930002425 A KR 930002425A KR 1019920013185 A KR1019920013185 A KR 1019920013185A KR 920013185 A KR920013185 A KR 920013185A KR 930002425 A KR930002425 A KR 930002425A
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polytetrafluoroethylene
porous film
film
sintered
semi
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KR1019920013185A
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KR100258485B1 (ko
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신지 다이루
오사무 다나까
히로후미 니시바야시
오사무 이노우에
가쓰또시 야마모또
도시오 구스미
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야마다 미노루
다이낑고오교 가부시끼가이샤
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Publication of KR930002425A publication Critical patent/KR930002425A/ko
Priority to KR1019990035873A priority Critical patent/KR100260966B1/ko
Priority to KR1019990035874A priority patent/KR100260967B1/ko
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Publication of KR100258485B1 publication Critical patent/KR100258485B1/ko

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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18Manufacture of films or sheets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D39/00Filtering material for liquid or gaseous fluids
    • B01D39/14Other self-supporting filtering material ; Other filtering material
    • B01D39/16Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/1692Other shaped material, e.g. perforated or porous sheets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D67/00Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0002Organic membrane manufacture
    • B01D67/0023Organic membrane manufacture by inducing porosity into non porous precursor membranes
    • B01D67/0025Organic membrane manufacture by inducing porosity into non porous precursor membranes by mechanical treatment, e.g. pore-stretching
    • B01D67/0027Organic membrane manufacture by inducing porosity into non porous precursor membranes by mechanical treatment, e.g. pore-stretching by stretching
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D69/00Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/10Supported membranes; Membrane supports
    • B01D69/107Organic support material
    • B01D69/1071Woven, non-woven or net mesh
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D71/00Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06Organic material
    • B01D71/30Polyalkenyl halides
    • B01D71/32Polyalkenyl halides containing fluorine atoms
    • B01D71/36Polytetrafluoroethene
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/005Shaping by stretching, e.g. drawing through a die; Apparatus therefor characterised by the choice of materials
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2323/00Details relating to membrane preparation
    • B01D2323/08Specific temperatures applied
    • B01D2323/081Heating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2325/00Details relating to properties of membranes
    • B01D2325/02Details relating to pores or porosity of the membranes
    • B01D2325/0281Fibril, or microfibril structures
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2027/00Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/12Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
    • B29K2027/18PTFE, i.e. polytetrafluorethene, e.g. ePTFE, i.e. expanded polytetrafluorethene
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/04Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2327/00Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
    • C08J2327/02Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2327/12Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • C08J2327/18Homopolymers or copolymers of tetrafluoroethylene
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S264/00Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/73Processes of stretching
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/24Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24273Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/249921Web or sheet containing structurally defined element or component
    • Y10T428/249953Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249978Voids specified as micro
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/249921Web or sheet containing structurally defined element or component
    • Y10T428/249953Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249978Voids specified as micro
    • Y10T428/249979Specified thickness of void-containing component [absolute or relative] or numerical cell dimension
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/31504Composite [nonstructural laminate]
    • Y10T428/3154Of fluorinated addition polymer from unsaturated monomers
    • Y10T428/31544Addition polymer is perhalogenated

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Medicinal Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Materials Engineering (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Filtering Materials (AREA)
  • Laminated Bodies (AREA)

Abstract

내용 없음.

Description

폴리테트라플루오로에틸렌 다공성 필름 및 그의 제조방법 및 용도
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 실시예에서 사용된 연신 기구를 개략적으로 나타낸다,
제2도는 비소결(unsintered)PTFE 물질 및 소결(sintered)PTFE물질의 결정 용융 곡선을 나타낸다,
제3도는 반소결(semisintered)PTFE 물질의 결정 용융 곡선을 나타낸다.

Claims (9)

  1. 반소결 폴리테트라플루오로에틸렌 물질을 연신하고 연신된 물질을 소결 폴리테트라플루오로에틸렌의 융점 보다 높은 온도에서 가열하고 제조되고, 주사 전자현미경 사진의 상 프로세싱에 의해 측정되는 99 : 1 내지 75 : 25의 피브릴 대 노드의 면적 비율, 0.05 내지 02㎛의 평균 피브릴 직경 및 2㎛2이하의 최대 노드 면적, 및 0.2내지 0.5㎛의 평균 기공 크기를 갖는 폴리테트라플루오로에틸렌 다공성 필름의 제조방법.
  2. 평균 기공 크기가 0.2 내지 0.5㎛이고, 공기가 5.3㎝/초의 유속으로 통과할때 압력 손실이 10 내지 100㎜H2O인 폴리테트라플루오로에틸렌 다공성 필름.
  3. 제1항에 있어서, 적어도 한 표면에 올레핀계 다공성 물질 필름 및 플루오로레진 다공성 필름으로 구성된 군으로부터 선택된 보강물질 필름이 접착제를 사용하거나 사용하지 않고 적층되는 폴리테트라플루오로에틸렌 다공성 필름.
  4. 반소결 폴리테트라플루오로에틸렌 물질을 적어도 50의 면적 연신 비율로 이축 방향으로 연신하고 연신된 필름을 소결 폴리테트라플루오로에틸렌의 융점보다 높은 온도에서 열고정함으로써 제조된 폴리테트라플루오로에틸렌 다공성 필름.
  5. 제4항에 있 어서, 적어도 한 표면에 올레핀계 다공성 물질 필름 및 플루오로레진 다공성 필름으로 구성된 군으로부터 선택된 보강물질 필름이 접착제를 사용하거나 사용하지 않고 적층되는 폴리테트라플루오로에틸렌 다공성 필름.
  6. 반소결 폴리테트라플루오로에틸렌을 적어도 50의 면적 연신 비율로 이축방향으로 연신하고 연신된 필름을 폴리테트라플루오로에틸렌의 융점보다 높은 온도에서 열고정시키는 단계로 구성됨을 특징으로 하는 제1항에 따른 폴리테트라플루오로에틸렌 다공성 필름의 제조방법.
  7. 제6항에 있어서, 제조된 다공성 필름의 두께가 반소결 폴리테트라플루오로에틸렌 물질 두께의 약 20분의 1이하인 방법.
  8. 제1항에 있어서, 폴리테트라플루오로에틸렌 다공성 필름을 포함하는 공기 여과기.
  9. 제4항에 있어서, 폴리테트라플루오로에틸렌 다공성 필름을 포함하는 공기 여과기.
    ※ 참고사항 : 최초출원 내용에 의하여 공개되는 것임.
KR1019920013185A 1991-07-23 1992-07-23 폴리테트라플루오로에틸렌 다공성 필름 KR100258485B1 (ko)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1019990035873A KR100260966B1 (en) 1991-07-23 1999-08-27 Reinforcing material for filtering material of filter
KR1019990035874A KR100260967B1 (ko) 1991-07-23 1999-08-27 폴리테트라플루오로에틸렌 다공성 필름을 포함하는 공기 여과기

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP18236491 1991-07-23
JP91-182364 1991-07-23

Related Child Applications (1)

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KR1019990035874A Division KR100260967B1 (ko) 1991-07-23 1999-08-27 폴리테트라플루오로에틸렌 다공성 필름을 포함하는 공기 여과기

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KR930002425A true KR930002425A (ko) 1993-02-23
KR100258485B1 KR100258485B1 (ko) 2000-06-15

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US (1) US5234739A (ko)
EP (2) EP0525630B1 (ko)
KR (1) KR100258485B1 (ko)
CN (1) CN1033428C (ko)
CA (1) CA2074349C (ko)
DE (2) DE69208552T2 (ko)
ES (2) ES2126672T3 (ko)
RU (1) RU2103283C1 (ko)

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EP0525630B1 (en) 1996-02-28
DE69228002T2 (de) 1999-06-10
CA2074349A1 (en) 1993-01-24
EP0525630A3 (en) 1993-03-17
EP0611790A3 (en) 1994-09-28
CN1033428C (zh) 1996-12-04
EP0611790B1 (en) 1998-12-23
RU2103283C1 (ru) 1998-01-27
CN1072351A (zh) 1993-05-26
CA2074349C (en) 2004-04-20
DE69208552D1 (de) 1996-04-04
US5234739A (en) 1993-08-10
KR100258485B1 (ko) 2000-06-15
DE69208552T2 (de) 1996-09-05
EP0525630A2 (en) 1993-02-03
ES2086591T3 (es) 1996-07-01
EP0611790A2 (en) 1994-08-24
ES2126672T3 (es) 1999-04-01
DE69228002D1 (de) 1999-02-04

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