EP2668328A1 - Dünne, makroporöse polymerfolien - Google Patents
Dünne, makroporöse polymerfolienInfo
- Publication number
- EP2668328A1 EP2668328A1 EP11805844.5A EP11805844A EP2668328A1 EP 2668328 A1 EP2668328 A1 EP 2668328A1 EP 11805844 A EP11805844 A EP 11805844A EP 2668328 A1 EP2668328 A1 EP 2668328A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- welded
- fibers
- polymer
- film according
- equal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 229920006254 polymer film Polymers 0.000 title description 4
- 238000000034 method Methods 0.000 claims abstract description 15
- 239000011148 porous material Substances 0.000 claims abstract description 8
- 239000000835 fiber Substances 0.000 claims description 40
- 229920001169 thermoplastic Polymers 0.000 claims description 23
- 229920005594 polymer fiber Polymers 0.000 claims description 17
- 239000004744 fabric Substances 0.000 claims description 16
- 229920000642 polymer Polymers 0.000 claims description 12
- 238000002844 melting Methods 0.000 claims description 10
- 230000008018 melting Effects 0.000 claims description 9
- 239000004416 thermosoftening plastic Substances 0.000 claims description 8
- 239000000919 ceramic Substances 0.000 claims description 6
- 239000012528 membrane Substances 0.000 claims description 6
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 4
- 229910001416 lithium ion Inorganic materials 0.000 claims description 4
- 229920003235 aromatic polyamide Polymers 0.000 claims description 3
- 239000011258 core-shell material Substances 0.000 claims description 3
- 239000005022 packaging material Substances 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- 229920000098 polyolefin Polymers 0.000 claims description 3
- 239000002033 PVDF binder Substances 0.000 claims description 2
- 239000004952 Polyamide Substances 0.000 claims description 2
- 239000004695 Polyether sulfone Substances 0.000 claims description 2
- 239000004642 Polyimide Substances 0.000 claims description 2
- 229920002396 Polyurea Polymers 0.000 claims description 2
- 239000012876 carrier material Substances 0.000 claims description 2
- 229920003208 poly(ethylene sulfide) Polymers 0.000 claims description 2
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 2
- 229920002647 polyamide Polymers 0.000 claims description 2
- 229920006393 polyether sulfone Polymers 0.000 claims description 2
- 229920001721 polyimide Polymers 0.000 claims description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 2
- 239000004814 polyurethane Substances 0.000 claims description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000011888 foil Substances 0.000 abstract 1
- 239000002904 solvent Substances 0.000 abstract 1
- 239000010408 film Substances 0.000 description 47
- 239000000463 material Substances 0.000 description 8
- 238000003490 calendering Methods 0.000 description 7
- 229920000139 polyethylene terephthalate Polymers 0.000 description 5
- 239000005020 polyethylene terephthalate Substances 0.000 description 5
- 229920002799 BoPET Polymers 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000011162 core material Substances 0.000 description 3
- 239000004753 textile Substances 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- 238000005524 ceramic coating Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- -1 polyethylene terephthalate Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000004760 aramid Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 244000144992 flock Species 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004634 thermosetting polymer Substances 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C7/00—Heating or cooling textile fabrics
-
- 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
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D25/00—Woven fabrics not otherwise provided for
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/541—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/541—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres
- D04H1/5412—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres sheath-core
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/555—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving by ultrasonic heating
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
- D04H3/04—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments in rectilinear paths, e.g. crossing at right angles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- 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
-
- 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
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/411—Organic material
- H01M50/414—Synthetic resins, e.g. thermoplastics or thermosetting resins
- H01M50/42—Acrylic resins
-
- 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
- H01M50/423—Polyamide resins
-
- 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
- H01M50/44—Fibrous material
-
- 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
- H01M50/494—Tensile strength
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
Definitions
- the invention relates to a film comprising polymer fibers, at least to the
- a fiber is understood to be a thin structure in relation to the length, which is flexible and can absorb no tensile forces but only tensile forces. Fibers buckle under pressure. In nature and technology fibers usually occur in a larger composite, they form a specific structure. Fibers of very large, virtually unlimited length are filaments, fibers of limited length are staple fibers.
- Staple fibers in turn divide into actually spinnable staple fibers and below a limit length of about 15 mm flock fibers.
- a yarn according to DIN 60900 is a collective term for all linear textile structures. Thereafter, a yarn is analogous to a long, thin structure of one or more fibers. It is a textile intermediate that can be made into fabrics, crocheted, knitted and embroidered or used for sewing.
- Porous films are usually obtained by subjecting films, e.g. Polymer films, perforated or damage their original structure mechanically or chemically. Such materials can be supplied to a wide variety of uses, for example as
- Packaging materials, separation and filtration membranes or as separators are packaged, separation and filtration membranes or as separators.
- German patent application DE 10 2009 047 440 discloses production and properties of thin, perforated films which are stable for coating or impregnation processes.
- the films contain or are made of metal or polymer and are perforated by means of a laser emitting at a suitable wavelength.
- open area An important variable that characterizes openwork material is the open area. It is given through the pores and is determined by considering the material as a two-dimensional structure and the area occupied by the pores in relation to the total set of the material occupied area. If the pores are arranged regularly, elementary cells can be found that can be used to determine the open area. The edge length of the patches can be selected, for example, equal to 100 times the pore diameter.
- F max tensile strength
- a porous film is obtained by densifying a woven or knitted fabric comprising or consisting of polymer fibers such that the fibers are welded together at least at their points of intersection and / or at least partly fused together or non-positively or positively connected to each other. After such treatment, the fibers have lost their original shape in cross-section, but are still recognizable as such, for example under light microscopic observation. By contrast, the macroscopic structure no longer has the properties of a conventional fabric or knitted fabric - individual threads or fibers can no longer be separated off.
- the invention thus relates to a porous film, which is characterized in that the film comprises polymer fibers which are welded together at least at the points of intersection between the pores, in particular thermally welded, swell welded, cold-welded, ultrasonically welded and / or at least partially together
- the porous film according to the invention has the advantage of a homogeneous structure and a good tensile strength in the longitudinal and in the transverse direction. Another advantage is that the claimed film can easily be wound up without the connections of the fibers at the crossover points impeding the winding up. When winding up this film neither break the individual fibers, nor the compounds at the crossover points.
- the invention likewise relates to a process for the production of the porous film, which is characterized in that a woven or knitted fabric comprising or consisting of thermoplastic polymer fibers is compacted under a surface or line pressure at least once, the polymer fibers at least on the
- Crossover points welded together in particular thermowelded, swell welded, cold-welded, ultrasonically welded, and / or at least partially fused together or non-positively or positively connected to each other. This is done at a surface or line pressure less than or equal to 500 N / mm, and a temperature less than or equal to 50% below the melting temperature of the lowest melting polymer.
- the inventive method has the advantage that the macroscopic thickness of the resulting film can be adjusted, by continuously adjustable
- the invention therefore also relates to the film obtained according to the method and the use of the film according to the invention or the invention obtained as a separator in batteries, as well as packaging material, membrane, filter, and as a carrier material for ceramic composite membranes.
- One possible use of the film according to the invention is, for example, as a carrier of a ceramic coating in the production of ceramic separators, for example the SEPARION® separator, which is particularly suitable for use in high-performance lithium-ion batteries because of its temperature and chemical resistance.
- the invention is therefore also a lithium-ion battery, the
- the film according to the invention may have a thickness of less than or equal to 100 ⁇ m and / or an open area of greater than or equal to 20%. This makes them suitable for use as a separator in a battery. Particularly preferably, the film may have a thickness of less than or equal to 20 ⁇ m. This makes them suitable for use as a separator in a high-performance battery, particularly preferably in a lithium-ion battery.
- the fibers of the film according to the invention may advantageously contain or consist of a plastic with a low melting point. An example of a partial
- Melting polymer is polyethylene terephthalate (PET), which melts at 210 - 235 ° C.
- PET polyethylene terephthalate
- a preferred plastic may be Vestamelt®.
- mixtures of fibers which can bring about fusion or fusion are advantageous, particularly preferably in the longitudinal direction of the polyester and in the transverse direction
- polymer fibers of the film according to the invention may comprise or consist of at least one thermoplastic polymer. More preferably, the polymer of these fibers may be selected from polyacrylonitrile, polyester, polyamide, polyimide, polyaramid, polyolefins, PTFE, PVDF, PES, PUR, or a combination of these polymers.
- polymer fibers of the film according to the invention may comprise or consist of at least one thermoplastic and at least one non-thermoplastic polymer, core-shell fibers, and / or co-extrudates.
- polymer fibers of the film according to the invention comprise at least one thermoplastic and at least one non-thermoplastic polymer, these may be selected from core-shell fibers, wherein the core material comprises or is at least one non-thermoplastic polymer,
- thermoplastic polymer fibers in warp direction and non-thermoplastic
- thermoplastic polymer fibers in the warp direction and thermoplastic
- Polymer fibers comprising or consisting of a finer thermoplastic and non-thermoplastic polymer fibers, or
- the film according to the invention which comprises polymer fibers made of or with thermoplastic and non-thermoplastic polymer, has the advantage that the film according to the invention or obtained according to the invention has a greater tensile strength than a film which consists of an extruded polymer composition.
- a particular advantage is that such a film calendering or further processing in roll-to-roll processes, for example
- the film of the invention or obtained according to the invention with ceramic material can coat and subsequently heat treated, for example in the preparation of SEPARION ® separator.
- the film has the advantage that its tensile strength can be adapted to the requirements of calendering, for example by selecting the non-thermoplastic polymer for the fibers in the warp direction.
- the film has the advantage that very thin Films can be obtained by selecting particularly thin thermoplastic and / or non-thermoplastic polymer fibers.
- thermosetting polymer fiber core also gives the film according to the invention more strength. Also, this selection affects the thickness of the porous film because the material does not deform so easily. Although the film according to the invention has a higher stability and thus a low deformability and a higher shear modulus, a less elastic behavior in the calendering gap is to be considered.
- the polymer fibers may particularly preferably be coated fibers which are obtained by methods known to the person skilled in the art, for example the so-called
- Bicomponent spins or coextrusion are particularly preferred.
- Further preferred fibers may also be staple fibers as "spunbond” or very short and fine meltblown fibers available from Fare SpA, Via Pastrengo 31, Fagnono, Olona (VA), 21054, Italy.
- the films according to the invention or those obtained according to the invention can be converted into ceramic composite membranes by coating with ceramic dispersions.
- An example of the prior art is SEPARION ® in which a polymeric web is used instead of a perforated polymer film.
- the further subject of the invention is a process for the preparation of
- porous film according to the invention characterized in that a woven or knitted fabric comprising or consisting of thermoplastic polymer fibers, under a surface or line pressure of less than or equal to 500 N / mm, and a temperature less than or equal to 50% below the melting temperature of the lowest melting polymer is compressed at least once, wherein the polymer fibers at least to the
- Crossover points welded together in particular thermowelded, source welded, cold-welded, ultrasound l-welded, and / or at least partially fused together or positively or non-positively connected to each other.
- the woven or knitted fabric is continuously compressed in calenders or belt presses.
- a line pressure of less than or equal to 500 N / mm is used.
- plate presses are favored for a discontinuous procedure.
- a temperature less than or equal to 10% below the melting temperature of the lowest melting polymer may be selected.
- At least one additional calendering is the additional functionality, preferably by applying a further fabric or nonwoven.
- a further fabric or nonwoven Preferably, an extremely thin aramid nonwoven can be calendered.
- PET Polyethylene terephthalate
- the tensile strengths were determined according to DIN EN ISO 527-1 in each case in the so-called “material direction” (MD) known to the person skilled in the art and in “cross direction” (CD). The results are shown in Table 1. At a line pressure of 300 N / mm, a transport speed of 10 m / min and a temperature of 220 ° C, a porous film according to the invention was obtained with a thickness of 14 ⁇ . The measured tensile strengths are shown in Table 1 in row 1. The tensile strengths of calendering the fabric in a line pressure of
- Line 3 shows the tensile strengths of those obtained from the same fabric
- Line 4 shows the tensile strengths of those obtained from the same fabric
- PET films with thicknesses of 18 ⁇ or 1 1 ⁇ were perforated two-dimensionally with a laser. This area perforation can be performed with C02 lasers. The method is based on the one-dimensional perforation as it is performed, for example, at the companies Maag or Micro Laser Tech and u.a. in JP63023936 or JP1 1077872.
- the resulting perforated films had an open area of 22% and 15%, respectively, summarized in lines 5 and 6 of Table 1, respectively.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Cell Separators (AREA)
- Nonwoven Fabrics (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011003186A DE102011003186A1 (de) | 2011-01-26 | 2011-01-26 | Dünne, makroporöse Polymerfolien |
| PCT/EP2011/073799 WO2012100889A1 (de) | 2011-01-26 | 2011-12-22 | Dünne, makroporöse polymerfolien |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2668328A1 true EP2668328A1 (de) | 2013-12-04 |
Family
ID=45464541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP11805844.5A Withdrawn EP2668328A1 (de) | 2011-01-26 | 2011-12-22 | Dünne, makroporöse polymerfolien |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20130302695A1 (de) |
| EP (1) | EP2668328A1 (de) |
| JP (1) | JP2014505147A (de) |
| KR (1) | KR20140006843A (de) |
| CN (1) | CN103354848A (de) |
| DE (1) | DE102011003186A1 (de) |
| WO (1) | WO2012100889A1 (de) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013200722A1 (de) | 2012-01-30 | 2013-08-01 | Evonik Litarion Gmbh | Separator enthaltend eine organisch-anorganische Haftvermittlerkomponente |
| KR101705305B1 (ko) * | 2012-10-22 | 2017-02-09 | 주식회사 엘지화학 | 균일한 기공 배열을 갖는 다공성 분리막 및 이를 포함하는 이차전지 |
| CN103306014B (zh) * | 2013-07-05 | 2017-02-08 | 昆山豪绅纤维科技开发有限公司 | 发光织物 |
| DE102016114319B4 (de) * | 2016-08-03 | 2019-02-28 | Inteca Gmbh | Flächige Beleuchtungsvorrichtung |
| US10797284B2 (en) | 2017-02-14 | 2020-10-06 | Volkswagen Ag | Electric vehicle battery cell with polymer frame for battery cell components |
| US11362371B2 (en) | 2017-02-14 | 2022-06-14 | Volkswagen Ag | Method for manufacturing electric vehicle battery cells with polymer frame support |
| US11362338B2 (en) | 2017-02-14 | 2022-06-14 | Volkswagen Ag | Electric vehicle battery cell with solid state electrolyte |
| US11870028B2 (en) | 2017-02-14 | 2024-01-09 | Volkswagen Ag | Electric vehicle battery cell with internal series connection stacking |
| DE102017205653A1 (de) | 2017-04-03 | 2018-10-04 | Vitrulan Textile Glass Gmbh | Glasbasierter Batterieseparator |
| DE102017007858A1 (de) | 2017-04-03 | 2018-10-04 | Thorsten Gerdes | Verfahren zum direkten Aufbringen von glasbasierten Separatoren auf Batterieelektroden |
| JP7067220B2 (ja) * | 2018-04-11 | 2022-05-16 | トヨタ自動車株式会社 | セパレータ |
| WO2019242016A1 (en) * | 2018-06-22 | 2019-12-26 | Shanghai Energy New Materials Technology Co., Ltd. | Separators, electrochemical devices comprising separators, and methods for making separators |
| CN114784462B (zh) * | 2022-04-14 | 2024-06-28 | 中材锂膜(常德)有限公司 | 隔离膜制备方法 |
| CN115101888B (zh) * | 2022-06-16 | 2024-03-26 | 广东工业大学 | 一种多级孔纤维布基聚合物复合膜及其制备方法和应用 |
| CN115874351A (zh) * | 2022-12-12 | 2023-03-31 | 江苏亨通精密铜业有限公司 | 非织造复合箔、制备工艺及其应用 |
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2011
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- 2011-12-22 CN CN2011800656481A patent/CN103354848A/zh active Pending
- 2011-12-22 EP EP11805844.5A patent/EP2668328A1/de not_active Withdrawn
- 2011-12-22 WO PCT/EP2011/073799 patent/WO2012100889A1/de not_active Ceased
- 2011-12-22 JP JP2013550791A patent/JP2014505147A/ja active Pending
- 2011-12-22 KR KR1020137019739A patent/KR20140006843A/ko not_active Withdrawn
- 2011-12-22 US US13/980,719 patent/US20130302695A1/en not_active Abandoned
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Also Published As
| Publication number | Publication date |
|---|---|
| CN103354848A (zh) | 2013-10-16 |
| DE102011003186A1 (de) | 2012-07-26 |
| JP2014505147A (ja) | 2014-02-27 |
| KR20140006843A (ko) | 2014-01-16 |
| WO2012100889A1 (de) | 2012-08-02 |
| US20130302695A1 (en) | 2013-11-14 |
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