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DK2384375T3 - Elektrospinning af ptfe med højviskøse materialer - Google Patents

Elektrospinning af ptfe med højviskøse materialer Download PDF

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Publication number
DK2384375T3
DK2384375T3 DK10732230.7T DK10732230T DK2384375T3 DK 2384375 T3 DK2384375 T3 DK 2384375T3 DK 10732230 T DK10732230 T DK 10732230T DK 2384375 T3 DK2384375 T3 DK 2384375T3
Authority
DK
Denmark
Prior art keywords
poly
ptfe
forming
dispersion
mat according
Prior art date
Application number
DK10732230.7T
Other languages
English (en)
Inventor
Bruce L Anneaux
Robert Ballard
David P Garner
Original Assignee
Zeus Ind Products Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zeus Ind Products Inc filed Critical Zeus Ind Products Inc
Application granted granted Critical
Publication of DK2384375T3 publication Critical patent/DK2384375T3/da

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    • 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
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
    • D04H1/728—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by electro-spinning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/007—Processes for applying liquids or other fluent materials using an electrostatic field
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B11/00—Making preforms
    • B29B11/06—Making preforms by moulding the material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
    • B29B13/023—Half-products, e.g. films, plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/04—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a non-planar shape
    • B32B1/08—Tubular products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/085—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/005—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F114/00—Homopolymers 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
    • C08F114/18—Monomers containing fluorine
    • C08F114/26—Tetrafluoroethene
    • 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
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    • C08J3/005—Processes for mixing polymers
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    • 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
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
    • C08J3/03—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
    • C08J3/05—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media from solid polymers
    • 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
    • C08J9/22—After-treatment of expandable particles; Forming foamed products
    • C08J9/228—Forming foamed products
    • C08J9/232—Forming foamed products by sintering expandable particles
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
    • D01D10/02—Heat treatment
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/0007—Electro-spinning
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/0007—Electro-spinning
    • D01D5/0015—Electro-spinning characterised by the initial state of the material
    • D01D5/003—Electro-spinning characterised by the initial state of the material the material being a polymer solution or dispersion
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
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    • D01D5/0007—Electro-spinning
    • D01D5/0015—Electro-spinning characterised by the initial state of the material
    • D01D5/003—Electro-spinning characterised by the initial state of the material the material being a polymer solution or dispersion
    • D01D5/0038—Electro-spinning characterised by the initial state of the material the material being a polymer solution or dispersion the fibre formed by solvent evaporation, i.e. dry electro-spinning
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D01F6/08—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polymers of halogenated hydrocarbons
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    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
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    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D10B2321/04—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polymers of halogenated hydrocarbons
    • D10B2321/042—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polymers of halogenated hydrocarbons polymers of fluorinated hydrocarbons, e.g. polytetrafluoroethene [PTFE]
    • 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
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/131—Glass, ceramic, or sintered, fused, fired, or calcined metal oxide or metal carbide containing [e.g., porcelain, brick, cement, etc.]
    • Y10T428/1314—Contains fabric, fiber particle, or filament made of glass, ceramic, or sintered, fused, fired, or calcined metal oxide, or metal carbide or other inorganic compound [e.g., fiber glass, mineral fiber, sand, etc.]
    • 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
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
    • Y10T428/1355—Elemental metal containing [e.g., substrate, foil, film, coating, etc.]
    • 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
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
    • Y10T428/1362—Textile, fabric, cloth, or pile containing [e.g., web, net, woven, knitted, mesh, nonwoven, matted, etc.]
    • 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
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • 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
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/654—Including a free metal or alloy constituent
    • Y10T442/656—Preformed metallic film or foil or sheet [film or foil or sheet had structural integrity prior to association with the nonwoven fabric]
    • 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
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/674—Nonwoven fabric with a preformed polymeric film or sheet
    • 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
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/681—Spun-bonded nonwoven fabric

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Artificial Filaments (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Claims (23)

1. Fremgangsmåde til at danne en PTFE-måtte, hvilken fremgangsmåde omfatter følgende: at tilvejebringe en dispersion, der omfatter: PTFE; en fiberdannende polymer; og et opløsningsmiddel, hvor den nævnte dispersion har en viskositet på mindst 50.000 cP (50 Pa s); at tilvejebringe et apparat, der omfatter en ladningskilde og et målobjekt, der ligger i en afstand fra den nævnte ladningskilde; at danne en første ladning ved nævnte ladningskilde og en modsat ladning ved det nævnte målobjekt, hvor den nævnte dispersion lades elektrostatisk ved kontakt med den nævnte ladningskilde; at opsamle den elektrostatisk ladede dispersion på det nævnte målobjekt for at danne et forstadium for en måtte; og at opvarme det nævnte forstadium for måtten for at fjerne det nævnte opløsningsmiddel og den nævnte fiberdannende polymer for derved at danne den nævnte PTFE-måtten.
2. Fremgangsmåde til at danne en PTFE-måtte ifølge krav 1, hvor den nævnte dispersion omfatter 50-80 vægt-% PTFE faste stoffer; og hvor den nævnte dispersion fortrinsvis omfatter 59-61 vægt-% PTFE faste stoffer.
3. Fremgangsmåde til at danne en PTFE-måtte ifølge krav 1 eller 2, hvilken fremgangsmåde yderligere omfatter sintring.
4. Fremgangsmåde til at danne en PTFE-måtte ifølge krav 3, hvor den nævnte sintring er ved en temperatur på mindst 500 °F (260 °C) til højst 900 °F (482 °C).
5. Fremgangsmåde til at danne en PTFE-måtte ifølge et hvilket som helst af de foregående krav, hvor den nævnte dispersion har en viskositet på mindst 100.000 cP (100 Pa s) til ikke mere end 300.000 cP (300 Pa-s).
6. Fremgangsmåde til at danne en PTFE-måtte ifølge et hvilket som helst af de foregående krav, hvor den nævnte spænding er 2.000 til 80.000 volt.
7. Fremgangsmåde til at danne en PTFE-måtte ifølge et hvilket som helst af de foregående krav, hvor den nævnte dispersion omfatter mindst 1 vægt-% til ikke mere end 10 vægt-% af den nævnte fiberdannende polymer; og/eller hvor den nævnte dispersion omfatter et vægtforhold af fiberdannende polymer til PTFE på mindst 3,0 til ikke mere end 5,5.
8. Fremgangsmåde til at danne en PTFE-måtte ifølge et hvilket som helst af de foregående krav, hvor den nævnte fiberdannende polymer har en opløselighed i det nævnte opløsningsmiddel på mere end 0,5 vægt-%.
9. Fremgangsmåde til at danne en PTFE-måtte ifølge et hvilket som helst af de foregående krav, hvor det nævnte opløsningsmiddel er vand.
10. Fremgangsmåde til at danne en PTFE-måtte ifølge et hvilket som helst af de foregående krav, hvor den nævnte fiberdannende polymer har et askeindhold på mindre end 5 vægt-% ved sintring ved 400 °C.
11. Fremgangsmåde til at danne en PTFE-måtte ifølge et hvilket som helst af de foregående krav, hvor den nævnte fiberdannende polymer er valgt fra gruppen, der består af følgende: dextran, alginater, chitosan, guargummi-forbindelser, stivelse, polyvinylpyridinforbindelser, celluloseforbindelser, celluloseether, hydrolyserede polyacrylamider, polyacrylater, polycarboxylater, polyvinylalkohol, polyethylenoxid, polyethylenglycol, polyethylenimin, polyvinylpyrrolidon, polyacrylsyre, poly(methacrylsyre), poly(itaconsyre), poly(2- hydroxyethylacrylat), poly(2-(dimethylamino)ethylmethacrylat-co-acrylamid), poly(N-isopropylacrylamid), poly(2-acrylamido-2-methyl-1-propansulfonsyre), poly(methoxyethylen), poly(vinylalkohol), poly(vinylalkohol) 12 % acetyl, poly(2,4 -dimethyl-6-triazinylethylen), poly(3-morpholinylethylen), poly(N-1,2,4-triazolyethylen), poly(vinylsulfoxid), poly(vinylamin), poly(N-vinylpyrrolidon-co-vinylacetat), poly(g-glutaminsyre), poly(N-propanoyliminoethylen), poly(4-amino-sulfoanilin), poly[N-(p-sulfophenyl) amino-3-hydroxymethyl-1,4-phenylenimino-1,4-phenylen)], isopropylcellulose, hydroxyethyl, hydroxylpropylcellulose, celluloseacetat, cellulosenitrat, alginiske ammoniumsalte, i-carrageenan , N-[(3'-hydroxy-2', 3'-dicarboxy)ethyl]chitosan, konjac-glocomannan, pullulan, xanthangummi, poly(allyammoniumchlorid), poly(allyammoniumphosphat), poly(diallydimethylammoniumchlorid), poly(benzyltrimethyl-ammoniumchlorid), poly(dimethyldodecyl-(2-acrylamidoethyl)ammoniumbromid), poly(4-N-butylpyridiniumethyleniodin), poly(2-N-methylpridiniummethyleniodin), poly(N-methylpryidinium-2,5-diylethenylen), polyethylenglycol polymerer og copolymerer, celluloseethylether, celluloseethylhydroxyethylether, cellulosemethylhydroxyethylether, poly(1 -glycerolmethacrylat), poly(2-ethyl-2-oxazolin), poly(2-hydroxyethylmethacrylat/methacrylsyre) 90:10 , poly(2-hydroxypropylmethacrylat), poly(2- methacryloxyethyltrimethylammoniumbromid), poly(2-vinyl-1 -methylpyridiniumbromid), poly(2-vinylpyridin-N-oxid), poly(2-vinylpyridin), poly(3-chlor-2-hydroxypropyl-2-methacryloxyethyldimethylammoniumchlorid), poly(4-vinylpyridin-N-oxid), poly(4-vinylpyridin), poly(acrylamid/2-methacryloxyethyltrimethylammoniumbromid) 80:20, poly(acrylamid/acrylsyre), poly(allylaminhydrochlorid), poly(butadien/maleinsyre), poly(diallyldimethylammoniumchlorid), poly(ethylacrylate/acrylsyre), poly(ethylenglycol)bis(2-aminoethyl), poly(ethylenglycol) monomethylether, poly(ethylenglycol)-bisphenol-A-diglycidyletheraddukt, poly(ethylenoxid-b-propylenoxid), poly(ethylen/acrylsyre) 92:8, poly(l-lysinhydrobromid), poly(1-lysinhydrobromid), poly(maleinsyre), poly(n-butylacrylat/2-methacryloxyethyltrimethylammoniumbromid), poly(N-isopropylacrylamid ), poly(N-vinylpyrrolidone/2-dimethylaminoethylmethacrylate), dimethylsulfat kvaternær, poly(N-vinylpyrrolidon/vinylacetat), poly(oxyethylen) sorbitanmonolaurat, (Tween 20®), poly(styrensulfonsyre), poly(vinylalkohol), N-methyl-4(4'-formylstyryl)pyridinium, methosulfatacetal, poly(vinylmethylether), poly(vinylamin) hydrochlorid, poly(vinylphosphonsyre), poly(vinylsulfonsyre) natriumsalt og polyanilin.
12. Fremgangsmåden til at danne en PTFE-måtte ifølge krav 11, hvor den fiberdannende polymer er polyethylenoxid; hvor det nævnte polyethylenoxid fortrinsvis har en molekylvægt på mindst 50.000 til ikke mere end 4.000.000.
13. Fremgangsmåde til at danne en PTFE-måtte ifølge et hvilket som helst af de foregående krav, hvor det nævnte målobjekt er en ekspanderet struktur.
14. Fremgangsmåde til at danne en PTFE-måtte ifølge et hvilket som helst af de foregående krav, hvilken fremgangsmåde yderligere omfatter udvidelse eller kontraktion af det nævnte målobjekt; ved hvilken udvidelsen eller kontraktionen af det nævnte målobjekt fortrinsvis udføres forud for den nævnte opsamling.
15. Fremgangsmåde til at danne en PTFE-måtte ifølge et hvilket som helst af de foregående krav, hvor PTFE’en har en partikelstørrelse på mindst 0,1 μιτι til ikke mere end 0,8 pm.
16. Fremgangsmåde til at danne en PTFE-måtte ifølge et hvilket som helst af de foregående krav, hvor dispersionen har en viskositet på mindst 100.000 cP (100 Pa s); eller hvor dispersionen har en viskositet på ikke mere end 500.000 cP (500 Pa-s).
17. Fremgangsmåde til at danne PTFE-måtte ifølge et hvilket som helst af de foregående krav, hvor viskositeten måles med et Brookfield LV-viscometer ved en konstant spindelhastighedsindstilling på 2,5 for en # 25 spindel ved 25 °C.
18. Fremgangsmåde til at danne en PTFE-måtte ifølge et hvilket som helst af de foregående krav, hvor dispersionen har en viskositet på ikke mere end 300.000 cP (300 Pa s).
19. Fremgangsmåde til at danne en PTFE-måtte ifølge et hvilket som helst af de foregående krav, hvor dispersionen har et område på ca. 50-80 vægt-% PTFE faste stoffer.
20. Fremgangsmåde til at danne en PTFE-måtte ifølge et hvilket som helst af de foregående krav, hvor dispersionen har et område på ca. 55-65 vægt-% PTFE faste stoffer.
21. Fremgangsmåde til at danne en PTFE-måtte ifølge et hvilket som helst af de foregående krav, hvor dispersionen har et område på ca. 59-61 vægt-% PTFE faste stoffer.
22. Fremgangsmåde til at danne en PTFE-måtte ifølge et hvilket som helst af de foregående krav, hvor dispersionen omfatter et forhold af fiberdannende polymer til dispersion på mellem 0,03 og 0,052 g/ml.
23. Fremgangsmåde til at danne en PTFE-måtte ifølge krav 22, hvor dispersionen har 59-62 vægt-% PTFE faste stoffer.
DK10732230.7T 2009-01-16 2010-01-19 Elektrospinning af ptfe med højviskøse materialer DK2384375T3 (da)

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