KR970015640A - 폴리올레핀 미다공막의 제조방법 - Google Patents

폴리올레핀 미다공막의 제조방법 Download PDF

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KR970015640A
KR970015640A KR1019960042296A KR19960042296A KR970015640A KR 970015640 A KR970015640 A KR 970015640A KR 1019960042296 A KR1019960042296 A KR 1019960042296A KR 19960042296 A KR19960042296 A KR 19960042296A KR 970015640 A KR970015640 A KR 970015640A
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microporous membrane
polyolefin
polyolefin microporous
weight
producing
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KR100426093B1 (ko
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노리미쓰 가이마이
고타로 다키타
고이치 고노
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    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • 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
    • 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
    • B01D67/0023—Organic membrane manufacture by inducing porosity into non porous precursor membranes
    • B01D67/0025—Organic membrane manufacture by inducing porosity into non porous precursor membranes by mechanical treatment, e.g. pore-stretching
    • B01D67/0027—Organic membrane manufacture by inducing porosity into non porous precursor membranes by mechanical treatment, e.g. pore-stretching by stretching
    • 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
    • B01D71/26—Polyalkenes
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    • 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
    • B01D71/26—Polyalkenes
    • B01D71/261—Polyethylene
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/409—Separators, membranes or diaphragms characterised by the material
    • H01M50/411—Organic material
    • H01M50/414—Synthetic resins, e.g. thermoplastics or thermosetting resins
    • H01M50/417—Polyolefins
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/489—Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
    • H01M50/491—Porosity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2323/00—Details relating to membrane preparation
    • B01D2323/08—Specific temperatures applied
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2323/00—Details relating to membrane preparation
    • B01D2323/08—Specific temperatures applied
    • B01D2323/081—Heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2323/00—Details relating to membrane preparation
    • B01D2323/08—Specific temperatures applied
    • B01D2323/082—Cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2323/00—Details relating to membrane preparation
    • B01D2323/12—Specific ratios of components used
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249978—Voids specified as micro
    • Y10T428/249979—Specified thickness of void-containing component [absolute or relative] or numerical cell dimension
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    • Y—GENERAL 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
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  • Polymers & Plastics (AREA)
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  • Dispersion Chemistry (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Cell Separators (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

1. 청구범위에 기재된 발명이 속한 기술분야
막의 제조가 효율적인 동시에 인장 파단강도나 뚫림강도등이 개량되는 폴리올레핀 미다공막의 제조방법에 관한 것이다.
2. 발명이 해결하려고 하는 기술적 과제
본 발명의 목적은 막의 제조가 효율적인 동시에 인장 파단강도나 뚫림강도 등이 개량되고, 막 제조의 효율화에 의하여 희생되는 일이 없이 품질이 양호한 폴리올레핀 미다공막의 제조방법을 제공하는 것에 있다.
3. 발명의 해결 방법의 요지
상기의 목적은 중량 평균분자량이 5×105∼2.5×106, 중량 평균분자량/수 평균분자량이 10 미만인 폴리올레핀 5∼50중량%을 용해시킨 용액을 압출 급냉하여 얻어진 겔과 유사한 상태의 성형물을 연신하고, 잔여 용액을 제거하여 얻어지는 폴리올레핀 미다공막의 제조방법에 의해 달성될 수 있다.
4. 발명의 중요한 용도
본 발명에 따른 폴리올레핀 미다공막은 전지 혹은 세퍼레이터등의 각종 용도로 이용할 수 있다.

Description

폴리올레핀 미다공막의 제조방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (9)

  1. 중량 평균분자량이 5×105∼2.5×106, 중량 평균분자량/수 평균분자량이 10 미만인 폴리올레핀 5∼50중량%와, 용매 95∼50중량%로 이루어지는 용액을 조제하고, 상기 용액을 다이에서 압출하고 냉각하여 겔 상태의 조성물을 형성하며, 연신된 생성물을 형성하기 위하여 상기 겔과 같은 상태의 조성물을 상기 폴리올레핀의 융점 10℃ 이하의 온도에서 연신하고, 이 후에 폴리올레핀 미다공막을 형성하기 위하여 연신된 생성물로부터 잔여 용매를 제거하는 것을 특징으로 하는 폴리올레핀 미다공막의 제조방법.
  2. 제1항에 있어서, 중량 평균분자량/수 평균분자량이 4∼8인 폴리올레핀 미다공막의 제조방법.
  3. 제1항 또는 제2항에 있어서, 상기 용액이 폴리올레핀 10∼20중량%와, 용매 90∼80중량%로 이루어지는 폴리올레핀 미다공막의 제조방법.
  4. 제1항에 있어서, 상기 폴리올레핀의 중량 평균분자량이 1×106∼2×106인 폴리올레핀 미다공막의 제조방법.
  5. 제1항에 있어서, 상기 다이로부터 압출된 폴리올레핀 용액의 냉각은, 겔화 온도 이하까지는 50℃/분 이상의 속도로 행하는 것으로 이루어지는 폴리올레핀 미다공막의 제조방법.
  6. 제1항에 있어서, 상기 연신온도는 이 폴리올레핀의 결정 분산온도 이상 융점 이하인 폴리올레핀 미다공막의 제조방법.
  7. 제1항에 기재된 제조방법에 의해 얻어진 폴리올레핀 미다공막.
  8. 제7항에 있어서, 상기 폴리올레핀 미다공막의 공극율이 30∼95%, 공기투과도가 2000초/100cc 이하, 평균공극의 직경이 0.005∼1㎛, 및 뚫림강도가 450g 이상인 폴리올레핀 미다공막.
  9. 제2항에 있어서, 상기 용액이 폴리올레핀 10∼20중량%와, 용매 90∼80중량%로 이루어지는 폴리올레핀 미다공막의 제조방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019960042296A 1995-09-26 1996-09-25 폴리올레핀미다공막및그의제조방법 KR100426093B1 (ko)

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JP27172695A JP3351940B2 (ja) 1995-09-26 1995-09-26 ポリオレフィン微多孔膜の製造方法
JP95-271726 1995-09-26

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KR100426093B1 KR100426093B1 (ko) 2004-06-24

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US (1) US5830554A (ko)
EP (1) EP0765900B1 (ko)
JP (1) JP3351940B2 (ko)
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CA (1) CA2186560C (ko)
DE (1) DE69613296T2 (ko)

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EP0765900A1 (en) 1997-04-02
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US5830554A (en) 1998-11-03
CA2186560C (en) 2003-07-15
JP3351940B2 (ja) 2002-12-03
KR100426093B1 (ko) 2004-06-24
EP0765900B1 (en) 2001-06-13
CA2186560A1 (en) 1997-03-27
DE69613296D1 (de) 2001-07-19

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