High-strength small-aperture polytetrafluoroethylene porous membrane

The present invention addresses the problem of providing: a polytetrafluoroethylene porous film having a small pore diameter, a thin film thickness, a high porosity, and high strength; and a method for producing the polytetrafluoroethylene porous film. The polytetrafluoroethylene porous film is char...

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Bibliographische Detailangaben
Hauptverfasser:	MIURA KEN, KONABE KAZUO, MIYAMAE KOHEI, SHIMATANI SHUNICHI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON GENERAL PROCESSES OF COMPOUNDING INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	The present invention addresses the problem of providing: a polytetrafluoroethylene porous film having a small pore diameter, a thin film thickness, a high porosity, and high strength; and a method for producing the polytetrafluoroethylene porous film. The polytetrafluoroethylene porous film is characterized in that the bubble point in isopropanol according to JIS K3832 is 400 kPa or more, and the tensile strength according to JIS K6251 is 50 MPa or more. 本发明的问题在于，提供一种小孔径且膜厚薄、高气孔率，并且具有高强度的聚四氟乙烯多孔膜及其制造方法。所述聚四氟乙烯多孔膜的特征在于，基于JIS K3832的异丙醇下的泡点为400kPa以上，并且基于JIS K6251的拉伸强度为50MPa以上。