KR930002426A - Polytetrafluoroethylene film and method for preparing same - Google Patents

Polytetrafluoroethylene film and method for preparing same Download PDF

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Publication number
KR930002426A
KR930002426A KR1019920011953A KR920011953A KR930002426A KR 930002426 A KR930002426 A KR 930002426A KR 1019920011953 A KR1019920011953 A KR 1019920011953A KR 920011953 A KR920011953 A KR 920011953A KR 930002426 A KR930002426 A KR 930002426A
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South Korea
Prior art keywords
polytetrafluoroethylene
film
sintered
melting point
preform
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KR1019920011953A
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Korean (ko)
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KR100221277B1 (en
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아쯔시 나까무라
사토시 나까시마
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에 또우 다께 도시
미쯔비시 가세이 가부시끼가이샤
다끼 사와 도시 히사
닛폰 바루카 고교 가부시끼가이샤
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    • 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
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof

Abstract

내용 없음.No content.

Description

폴리테트라플루오로에틸렌 다공성 필름 및 이의 제조방법Polytetrafluoroethylene porous film and preparation method thereof

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명의 하나의 태양에서 PTTE다공성 필름을 제조하는 공정의 단계를 나타내는 단면도이고,1 is a cross-sectional view showing the steps of a process for producing a PTTE porous film in one aspect of the invention,

제2도는 본 발명의 또다른 태양에서 PTFE 다공성 필름을 제조하는 공정의 단계를 나타내는 단면도이다.2 is a cross-sectional view showing the steps of a process for producing a PTFE porous film in another aspect of the present invention.

Claims (8)

현탁 중합에 의해 수득된 폴리테트라플루오로에틸렌 수지 성형 분말로부터 형성되고, 다공성 40 내지 80% 및 0.2㎛직경을 갖는 균일한 입자의 제거비 99%이상을 갖거나, 또는 다공성 40 내지 80% 및 발포점 3kg/㎠이상을 갖는 폴리테트라플루오로에틸렌 다공성 필름.It is formed from polytetrafluoroethylene resin molding powder obtained by suspension polymerization and has a removal ratio of 99% or more of uniform particles having a porosity of 40 to 80% and a diameter of 0.2 μm, or a porosity of 40 to 80% and a foaming point Polytetrafluoroethylene porous film having more than 3kg / ㎠. 제1항에 있어서, 상기 다공성 필름이 10 내지 50㎛의 두께를 가지며, 2개 이상의 폴리테트라플루오로에틸렌 필름을 서로 적층시키고 이들을 용융시킴으로써 수득되는 일체화된 생성물로부터 형성되는 폴리테트라플루오로에틸렌 다공성 필름.The polytetrafluoroethylene porous film of claim 1, wherein the porous film has a thickness of 10 to 50 μm and is formed from an integrated product obtained by laminating two or more polytetrafluoroethylene films with each other and melting them. . 현탁 중합에 의해 수득된 폴리테트라플루오로에틸렌 수지 성형 분말을 압축-성형하여 폴리테트라플루오로에틸렌 예비성형물을 제조하고, 이 예비성형물을 소결되지 않은 폴리테트라플루오로에틸렌의 융점-이상의 온도에서 소결시키며, 소결된 예비성형물을 필름으로 가공하고, 이어서 2개 이상의 수득된 필름을 서로 겹쳐놓고 소결된 폴리테트라플루오로에틸렌 수지의 융점이상의 온도에서 융용시켜 이들을 일체화시키며, 냉각시키고, 이이서 용융되고 일체화된 필름을 소결된 폴리테트라플루오로에틸렌 수지의 융점이하의 온도에서 일축 또는 이축 연신시키는 단계를 포함하는 폴리테트라플루오로에틸렌 다공성 필름의 제조방법.The polytetrafluoroethylene resin molding powder obtained by suspension polymerization is compression-molded to prepare a polytetrafluoroethylene preform, which is sintered at a temperature above the melting point of the unsintered polytetrafluoroethylene. The sintered preform is processed into a film, and then the two or more obtained films are superimposed on one another and melted at temperatures above the melting point of the sintered polytetrafluoroethylene resin to integrate them, cool them, and then melt and integrate them. A method for producing a polytetrafluoroethylene porous film comprising uniaxially or biaxially stretching a film at a temperature below the melting point of a sintered polytetrafluoroethylene resin. 현탁 중합에 의해 수득된 폴리테트라플루오로에틸렌 수지 성형 분말을 압축-성형하여 폴리테트라플루오로에틸렌 예비성형물을 제조하고, 이 예비성형물을 소결되지 않은 폴리테트라플루오로에틸렌의 융점-이상의 온도에서 소결시키며, 소결된 예비성형물을 필름으로 가공하고, 이어서 2개 이상의 수득된 필름을 서로 겹쳐놓고 소결된 폴리테트라플루오로에틸렌 수지의 융점이상의 온도에서 융용시켜 이들을 일체화시키며, 냉각시키고, 이이서 용융되고 일체화된 필름을 소결된 폴리테트라플루오로에틸렌 수지의 융점이하의 온도에서 일축 또는 이축 연신시키며, 필름을 열처리(heat set)하는 단계를 포함하는 폴리테트라플루오로에틸렌 다공성 필름의 제조방법.The polytetrafluoroethylene resin molding powder obtained by suspension polymerization is compression-molded to prepare a polytetrafluoroethylene preform, which is sintered at a temperature above the melting point of the unsintered polytetrafluoroethylene. The sintered preform is processed into a film, and then the two or more obtained films are superimposed on one another and melted at temperatures above the melting point of the sintered polytetrafluoroethylene resin to integrate them, cool them, and then melt and integrate them. A method for producing a polytetrafluoroethylene porous film comprising uniaxially or biaxially stretching a film at a temperature below the melting point of a sintered polytetrafluoroethylene resin, and heat-treating the film. 현탁 중합에 의해 수득된 폴리테트라플루오로에틸렌 수지 성형 분말을 압축-성형하여 폴리테트라플루오로에틸렌 예비성형물을 제조하고, 이 예비성형물을 소결되지 않은 폴리테트라플루오로에틸렌의 융점이상의 온도에서 소결시키며, 소결된 예비성형물을 필름으로 가공하고, 이어서 2개 이상의 수득된 폴리테트라플루오로에틸렌 필름을 소결된 폴리테트라플루오로에틸렌의 융점 미만의 온도에서 가열하여 이들을 접촉 결합시키며, 폴리테트라 플루오로에틸렌 필름이 결합된 생성물을 소결된 폴리테트라플루오로에틸렌 수지의 융점이상의 온도에서 가열하여 용융 및 일체화시키고, 용융 및 일체화된 필름을 소결된 폴리테트라플루오로에틸렌 수지의 융점이하의 온도에서 일축 또는 이축 연신시키는 단계를 포함하는 폴리테트라플루오로에틸렌 다공성 필름의 제조방법.The polytetrafluoroethylene resin molding powder obtained by suspension polymerization is compression-molded to prepare a polytetrafluoroethylene preform, and the preform is sintered at a temperature above the melting point of the unsintered polytetrafluoroethylene, The sintered preform is processed into a film, and then the two or more obtained polytetrafluoroethylene films are heated at a temperature below the melting point of the sintered polytetrafluoroethylene to contact them and the polytetrafluoroethylene film Melting and integrating the bound product at a temperature above the melting point of the sintered polytetrafluoroethylene resin and uniaxially or biaxially stretching the molten and integrated film at a temperature below the melting point of the sintered polytetrafluoroethylene resin. Polytetrafluoroethylene containing Method for manufacturing a microporous film. 현탁 중합에 의해 수득된 폴리테트라플루오로에틸렌 수지 성형 분말을 압축-성형하여 폴리테트라플루오로에틸렌 예비성형물을 제조하고, 이 예비성형물을 소결되지 않은 폴리테트라플루오로에틸렌의 융점이상의 온도에서 소결시키며, 소결된 예비성형물을 필름으로 가공하고, 이어서 2개 이상의 수득된 폴리테트라플루오로에틸렌 필름을 소결된 폴리테트라플루오로에틸렌의 융점 미만의 온도에서 가열하여 이들을 접촉 결합시키며, 폴리테트라 플루오로에틸렌 필름이 결합된 생성물을 소결된 폴리테트라플루오로에틸렌 수지의 융점이상의 온도에서 가열하여 용융 및 일체화시키고, 용융 및 일체화된 필름을 소결된 폴리테트라플루오로에틸렌 수지의 융점이하의 온도에서 일축 또는 이축 연신시키며, 이 필름을 열처리하는 단계를 포함하는 폴리테트라플루오로에틸렌 다공성 필름의 제조방법.The polytetrafluoroethylene resin molding powder obtained by suspension polymerization is compression-molded to prepare a polytetrafluoroethylene preform, and the preform is sintered at a temperature above the melting point of the unsintered polytetrafluoroethylene, The sintered preform is processed into a film, and then the two or more obtained polytetrafluoroethylene films are heated at a temperature below the melting point of the sintered polytetrafluoroethylene to contact them and the polytetrafluoroethylene film The bonded product is melted and integrated by heating at a temperature above the melting point of the sintered polytetrafluoroethylene resin, and the molten and integrated film is uniaxially or biaxially stretched at a temperature below the melting point of the sintered polytetrafluoroethylene resin, A poly comprising heat treating the film Process for producing a porous film by Tra-fluoro ethylene. 제5항 또는 제6항에 있어서, 적어도 2의 폴리테트라플루오로에틸렌 필름을 가열하여 접촉 결합시킴으로써 폴리테트라플루오로에틸렌 필름이 결합된 생성물을 제조하기 위한 가열 온도가 100 내지 300℃ 범위 이내인 폴리테트라플루오로에틸렌 다공성 필름의 제조방법.7. The poly according to claim 5 or 6, wherein the heating temperature for producing the product to which the polytetrafluoroethylene film is bound by heating and contact bonding at least two polytetrafluoroethylene films is in the range of 100 to 300 ° C. Method for producing a tetrafluoroethylene porous film. 제3항 내지 제6항중 어느 한 항에 있어서, 용융되고 일체화된 폴리테트라플루오로에틸렌 필름을 연신 시키기 위한 연신온도가 19 내지 320℃의 범위이내인 폴리테트라플루오로에틸렌 다공성 필름의 제조방법.The method for producing a polytetrafluoroethylene porous film according to any one of claims 3 to 6, wherein the stretching temperature for stretching the molten and integrated polytetrafluoroethylene film is within the range of 19 to 320 ° C. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920011953A 1991-07-04 1992-07-04 Polytetrafluoroethylene porous film and process for preparing the same KR100221277B1 (en)

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JP16456391 1991-07-04
JP164563/1991 1991-07-04

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6660419B1 (en) 1998-06-30 2003-12-09 Matsushita Electric Industrial Co., Ltd. Solid polymer electrolyte fuel cell
KR101390145B1 (en) * 2006-06-15 2014-04-29 니뽄 고아 가부시끼가이샤 Stretch composite fabric and stretch porous polytetrafluoroethylene film
US9126390B2 (en) 2005-09-20 2015-09-08 W. L. Gore & Associates, Co., Ltd. Stretch composite fabric and expanded porous polytetrafluoroethylene film

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6660419B1 (en) 1998-06-30 2003-12-09 Matsushita Electric Industrial Co., Ltd. Solid polymer electrolyte fuel cell
US9126390B2 (en) 2005-09-20 2015-09-08 W. L. Gore & Associates, Co., Ltd. Stretch composite fabric and expanded porous polytetrafluoroethylene film
KR101390145B1 (en) * 2006-06-15 2014-04-29 니뽄 고아 가부시끼가이샤 Stretch composite fabric and stretch porous polytetrafluoroethylene film

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