WO2009051263A1 - 芳香族ポリアミドナノファイバー及びそれを含む繊維構造体 - Google Patents
芳香族ポリアミドナノファイバー及びそれを含む繊維構造体 Download PDFInfo
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- WO2009051263A1 WO2009051263A1 PCT/JP2008/069071 JP2008069071W WO2009051263A1 WO 2009051263 A1 WO2009051263 A1 WO 2009051263A1 JP 2008069071 W JP2008069071 W JP 2008069071W WO 2009051263 A1 WO2009051263 A1 WO 2009051263A1
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- aromatic polyamide
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- fiber structure
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- 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
- D01F6/78—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products
- D01F6/80—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products from copolyamides
- D01F6/805—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products from copolyamides from aromatic copolyamides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
- B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
- B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
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- 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
- 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
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- 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
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/60—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyamides
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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
- D04H1/40—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
- D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4326—Condensation or reaction polymers
- D04H1/4334—Polyamides
- D04H1/4342—Aromatic polyamides
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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
- D04H1/40—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
- D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
- D04H1/43838—Ultrafine fibres, e.g. microfibres
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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
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- 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
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/02—Types of fibres, filaments or particles, self-supporting or supported materials
- B01D2239/025—Types of fibres, filaments or particles, self-supporting or supported materials comprising nanofibres
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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
- 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
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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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2913—Rod, strand, filament or fiber
- Y10T428/298—Physical 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
- 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.]
- Y10T442/30—Woven fabric [i.e., woven strand or strip material]
- Y10T442/3065—Including strand which is of specific structural definition
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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
- 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.]
- Y10T442/40—Knit fabric [i.e., knit strand or strip material]
- Y10T442/425—Including strand which is of specific structural definition
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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
- 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]
- Y10T442/608—Including strand or fiber material which is of specific structural definition
Definitions
- the present invention relates to an aromatic polyamide nanofiber and a fiber structure in which the nanofibers are laminated. More specifically, the stability of the spinning solution is improved by copolymerizing a third component aromatic diamine or an aromatic dicarponic acid halide which is different from the repeating structural unit constituting the main skeleton of the polymer.
- the present invention relates to a fiber structure in which an aromatic polyamide nanofiber and a nanofiber are laminated, which are preferably produced from a spinning solution by an electrospinning method.
- the present invention also relates to a filter for gas and liquid filtration using the aromatic polyamide, and a separator for electronic parts.
- nanofibers there are several methods for forming nanofibers, such as the melt-blowing method, the sea-island-type mixed-spun fiber method, and the electrospinning method.
- the electo-spinning method is a technique that has been known since the 1930s. m to several; it can be a web of m-diameter fibers, and therefore, it is possible to produce a highly porous web having a large surface area to volume ratio compared to other methods.
- nanofibers can be directly formed with a simple equipment configuration, spinning at room temperature is possible, and nanofibers of a very wide range of polymers, including high polymers that are sensitive to heat such as biopolymers, are still popular today. Applied research on.
- nanofibers such as excellent moisture permeability, slip effect, and cell recognition effect, are expected in a wide range of industrial fields such as automobiles, architecture, and medicine.
- Aromatic polyamides are known to be useful as fibers with excellent heat resistance, flame resistance, chemical resistance, and insulation, and fiber structures such as woven fabrics, knitted fabrics, and wet Z dry nonwoven fabrics are used as industrial products. Widely developed and deployed.
- nanofibers mainly composed of aromatic polyamide although there is a description in the patent literature that molding is possible, there are many examples in which details are not known without description of examples (Japanese Patent Laid-Open No. 0 2—249 9 6 6).
- Patents and technical literatures that describe a few examples of unifying aromatic polyamide nanofibers use a spinning solution containing a salt such as an alkali metal salt (Japanese Patent Laid-Open No. 59-2049). No.
- the presence of the alkali metal salt is very important because the addition of the alkali metal salt to the aromatic polyamide spinning solution can help dissolve the polymer and maintain the stability of the spinning solution.
- ionic components such as aluminum metal salts are used in filter applications for gas and liquid filtration and electronic material parts. It is preferable to reduce the amount of chilli as much as possible, and it is difficult to apply it to the above-mentioned application by the method described in the previous literature.
- An object of the present invention is to provide an aromatic polyamide nanofiber excellent in process stability in an electrospinning method and a fiber structure in which the nanofiber is laminated.
- Another object of the present invention is to provide a fiber structure suitable for gas and liquid filtration fills and electronic component separation using the aromatic polyamide nanofibers, and a method for producing the same.
- the present inventors have found that in the aromatic polyamide skeleton containing a specific repeating structural unit, with respect to the total amount of the repeating structural unit of the aromatic polyamide, Is obtained by spinning a polymer obtained by copolymerizing different aromatic diamines or aromatic dicarponic acid halides as the third component to 1 to 1 Omo 1% by electrospinning to form nanofibers. can get.
- an aromatic polyamide nanofiber having a cross-sectional diameter of 10 to 500 nm perpendicular to the fiber axis direction the aromatic polyamide is represented by the following formula (1).
- an aromatic diamine component or aromatic dicarboxylic acid halide component different from the main structural unit of the repeating structure is used as the third component of the repeating structural unit of the aromatic polyamide.
- Ar 1 a divalent aromatic group having a linking group other than in the meta-coordinate or parallel axis direction.
- Nanofiber is a general term for fibers having a cross-sectional diameter of several nanometers to several im, and has been intensively studied to obtain aromatic polyamide nanofibers that can be stably produced by an electrospinning method, and has reached the present invention.
- the aromatic polyamide as used in the present invention is a fiber-forming polymer in which one or more kinds of divalent aromatic groups are directly linked by an amide bond, and the repeating unit represented by the following formula (1) is a skeleton. It is an aromatic polyamide. Among these, polymetaphenylene isophthalamide is preferably used.
- a r 1 Divalent aromatic group having a linking group other than the meta-coordinate or parallel axis direction
- An important component for obtaining an aromatic polyamide nanofiber that can be stably produced by the electrospinning method of the invention and does not contain an alkali metal salt is the use of the third component in the aromatic copolyamide nanofiber.
- the content is required to be 1 to 1 Omo 1%, and more preferably 2 to 5 mol%.
- the content of the third component is 1 to 1 Omo 1%
- the molecular chain structure is disturbed, the crystallinity is lowered, and it exists stably without adding an alkali metal salt. Does not occur.
- the above-described effects are extremely effective.
- the content of the third component is less than 1% Imo, gelation occurs in the spinning solution, which is not preferable, and if it exceeds 1% Omo, the viscosity of the spinning solution increases and the target fiber diameter is reduced. It is not preferable because it is difficult to obtain nanofibers. Further, in order to further stabilize the spinning solution, a small amount of an alkali metal salt and an Z or alkaline earth metal salt can be added.
- the fiber diameter of the aromatic copolyamide nanofiber is 10 to 500 nm. If the fiber diameter is less than 10 nm, the resulting strength is significantly reduced, making it difficult to handle a fiber structure in which nanofibers or nanofibers are laminated, while the nanofiber fiber diameter is 500 nm. Exceeding the range, various effects peculiar to nanofibers, such as slip in one filter application The effect and high collection effect of submicron dust are not remarkably exhibited, which is not preferable.
- the fiber diameter is preferably 10 to 300 nm, more preferably 50 to 200 nm.
- the concentration of the aromatic copolyamide in the spinning solution is 5 to 20 wt%, preferably 8 to 15 wt%.
- concentration is less than 5 wt%, gelation is less likely to occur, and the stability of the spinning solution is improved.
- the spinning solution is spun by electrospinning, a film-like laminate is predominant. In addition, the productivity is lowered, which is not preferable.
- concentration exceeds 2 Owt%, the viscosity becomes remarkably high, and it becomes difficult to obtain nanofibers having a target fiber diameter.
- the intrinsic viscosity I V is 1.0 to 4.0, more preferably 1.0 to 2.0.
- the fiber diameter varies greatly, making it difficult to obtain nanofibers having the desired fiber diameter.
- the polydispersity (Mw / Mn) represented by the number average molecular weight (Mn) and the weight average molecular weight (Mw) is 1.0 to 2.0, more preferably 1.0 to 1.8. If the molecular weight distribution exceeds 2.0, the fiber diameter of the nanofiber to be formed will vary greatly, which is not preferable.
- the polymerization method of the polymer is not particularly limited, but the solution weight described in JP-B-35-14399, U.S. Pat. A legal method or an interfacial polymerization method may be used.
- aromatic diamines represented by the formulas (2) and (3) to be copolymerized as the third component include, for example, p-phenylenediamine, black mouth diamine dimethylamine, methyl phenylene diamine, and acetyl benzene. Ranger Min, aminoanisidine, benzidine, bis (aminophenyl) ether, bis (aminophenyl) sulfone, diaminobenzanilide, diaminoazobenzene and the like.
- aromatic dicarponic acid dichloride represented by the formulas (4) and (5) include terephthalic acid chloride, 1,4 mononaphthalenedicarboxylic acid chloride, 2,6-naphthalenedicarboxylic acid, and the like.
- examples thereof include chloride, 4,4′-biphenyldicarboxylic acid chloride, 5-chloroisophthalic acid chloride, 5-methoxyisophthalic acid chloride, and bis (black carbonyl phenyl) ether.
- the spinning solution is not particularly limited, but an amide solvent solution containing an aromatic copolyamide polymer obtained by the above solution polymerization or interfacial polymerization may be used. A polymer isolated and dissolved in an amide solvent may be used.
- amide solvent used here examples include N, N-dimethylformamide, N, N-dimethylacetamide, N-methyl-2-pyrrolidone, and dimethylsulfoxide.
- N, N-dimethylacetamide is preferred.
- the copolymerized aromatic polyamide polymer solution obtained as described above is used as the spinning solution for the electrospinning method, but is further stabilized by including an alkali metal salt and Z or alkaline earth metal salt. It is preferable because it can be used at a higher concentration and lower temperature.
- the alkali metal salt and the Z or alkaline earth metal salt are 1% by weight or less, more preferably 0.1% by weight or less, based on the total weight of the polymer solution.
- ionic contamination such as alkali metal salts as much as possible in filters for gas and liquid filtration, separators for electronic components, and so on. It is preferable to use a solution containing no metal salt.
- Nanofibers can be produced by an electrospinning method using an appropriate apparatus. However, it is common to spin the above spinning solution by an electric field from a spinning solution discharge section such as a nozzle, and is particularly limited. Although it is not, the voltage is 5.0 to 80 kV, the spinning distance is 5.0 to 50 cm, and the voltage per unit distance is 0.5 to 8 O kv Z cm. Is preferred.
- the twisted nanofibers are preferably laminated to form a fiber structure such as a fiber web.
- the method for uniformly laminating is not particularly limited, and examples thereof include a method of traversing a nozzle part and a part of a nanofiber collector. It is more preferable to laminate the twisted nanofibers on the base material, and the base material (fiber structure) used for the lamination is not particularly limited, but at least one selected from the group of woven fabric, knitted fabric and non-woven fabric. Preferably it is laminated to the seed.
- the woven fabric, knitted fabric, and nonwoven fabric may be synthetic fibers, natural fibers, or inorganic fibers.
- the polymer of the synthetic fiber is not particularly limited, but polyethylene terephthalate, polyacrylonitrile, polyethylene, polypropylene, nylon 12, nylon 1, 4, 6, and aromatic polyamide are suitable.
- cellulose fibers, protein fibers and the like As natural fibers, cellulose fibers, protein fibers and the like, and as inorganic fibers, glass fibers, carbon fibers, steel fibers and the like are generally available and easily available.
- Non-woven fabric manufacturing methods are not particularly limited, and examples thereof include carding method, airlaid method, filament orthogonal method, spun pond method, melt pro method, flash spinning method, tow opening method, and paper making method.
- These fiber structures may be used as they are, but they may be subjected to various processing depending on the purpose, such as water repellent processing, hydrophilic processing, sterilization processing, and antistatic processing. I do not support.
- the polymer is dissolved so that the polymer concentration / concentrated sulfuric acid is 1 O Omg / l O Oml, and the temperature is adjusted to the Ostwald viscometer at 30 ° C. Measured.
- the polymer was dissolved in dimethylformamide to 7 mg Zl Oml and measured by gel permeation chromatography (manufactured by Shimadzu Corporation).
- the contained elements were analyzed with a fluorescent X-ray analyzer system 3 2 7 0 (manufactured by Rigaku).
- the spinning solution prepared as shown in the following Examples and Comparative Examples was allowed to stand for 24 hours at 20 ° C / 60% RH.
- the result was evaluated with X.
- X was also evaluated for the case where a white solid component of 0.5 mm or more was observed although the entire spinning solution was not cloudy.
- Samples were arbitrarily sampled from the molded nanofibers, and 100 nanofibers were observed and measured with a scanning electron microscope JSM 6330 F (manufactured by J EOL). The observation was performed at a magnification of 30.000.
- a fiber diameter of 75% or more in the range of 10 to 500 nm ⁇ , 7 Less than 5% was evaluated by X.
- X was also evaluated for the case where the polymer constituting the surface of the fiber structure was markedly attached with a polymer that was not unified with nanofibers.
- the aromatic polyamide polymer of the present invention was produced as follows by an interfacial polymerization method according to the method described in Japanese Patent Publication No. SHO 4-7-10 8 3.
- anhydrous sodium carbonate 13.25 g was dissolved in water (25 Om 1) at room temperature, and this was stirred and cooled to 5 ° C to precipitate sodium carbonate hydrate crystals to form a dispersion.
- (B) was produced.
- the emulsion (A) and dispersion (B) were mixed vigorously. After further mixing for 2 minutes, 200 ml of water was added for dilution, and the resulting polymer was precipitated as a white powder. Filtration, washing with water and drying were carried out from the polymerization completed system to obtain the desired polymer.
- Table 1 shows the intrinsic viscosities I V measured for the obtained polymers.
- the obtained polymer was dissolved in N, N-dimethylacetamide so that it would be 10%, and allowed to stand at 20% in Z 60% RH for 24 hours to evaluate the stability of the polymer solution. Was performed by visual observation. The judgment is shown in Table 1.
- Electrospinning was performed in accordance with the method described in Japanese Patent Application Laid-Open No. 2000-063 36 1 73, and nanofibers were produced.
- the obtained polymer was dissolved in N, N-dimethylacetamide so as to be 10 wt%, and electrospinning was performed by applying an electric field so as to be I kV / cm, and nanofibers on cellulose paper. Got.
- the obtained nanofiber was used for scanning electron microscopy.
- the fiber diameter was measured with a microscope.
- the ratio of the fiber diameter in the range of 50 to 200 nm was calculated and the determination is shown in Table 1.
- Example 1 According to the same production method as in Example 1, the same operation as in Example 1 was performed except that the addition ratio of the third component was changed as shown in Table 1. These results are shown in Table 1.
- Example 1 According to the same production method as in Example 1, except that the addition rate of terephthalic acid dichloride and the laminated fiber structure (laminated fiber structure) were changed as shown in Table 1, the same operation as in Example 1 Went. These results are shown in Table 1.
- Example 1 According to the same production method as in Example 1, except that the spinning solvent was N-methyl-2-pyrrolidone, the same operation as in Example 1 was performed except that the fiber structure was changed as shown in Table 1. went. The results are shown in Table 1.
- Example 1 According to the same production method as in Example 1, except that Lic 1 (alkaline metal salt) and C ac 12 (alkaline earth metal salt) were added to the spinning solution as shown in Table 1, Example 1 The same operation as 1 was performed. These results are shown in Table 1.
- Example 1 According to the same production method as in Example 1, without adding terephthalic acid dichloride, isophthalic acid dichloride 25.25 g (10 Omo 1%), metaphenylenediamine 13.52 g (1 0 The same operation as in Example 1 was carried out except that polymerization was carried out at O mo 1%). The results are shown in Table 1.
- Example 3 According to the same production method as in Example 1, the same operation as in Example 1 was performed except that the addition ratio of the third component was changed as shown in Table 1. These results are shown in Table 1. Next, in Example 3 and Comparative Example 3, the fiber laminate structure was changed, and the air filter performance evaluation and the separation evening evaluation were performed. The details of the evaluation are shown below.
- Samples were arbitrarily sampled from the molded nanofibers, and 100 nanofibers were observed and measured with a scanning electron microscope J S M 6 3 30 F (manufactured by J E OL). The observation was performed at a magnification of 3 0,00 0 times. A case where 95% or more of the fiber diameter was in the range of 50 to 200 nm was evaluated as X, and a case where the fiber diameter was less than 95% was evaluated as X. In addition, X was also evaluated for the case where the polymer constituting the surface of the fiber structure was significantly attached with non-nanofiber polymer.
- a filter As a filter, a low pressure difference is preferable, and a high collection efficiency is preferable.
- the obtained composite structure is cut into 200 mm ⁇ , sandwiched between two SUS electrodes, and the ionic conductivity of the electrolyte is divided by the conductivity calculated from the AC impedance at 10 kHz.
- the electrolyte is 1 ML i BF 4 EC / PC adjusted to 1Z 1 by weight, and the measurement temperature is 25 ° C. The lower this value, the better the ion permeation.
- Example 2 According to the same manufacturing method as in Example 3, except that the laminated fiber structure (laminated fiber structure) was changed as shown in Table 2, the same operation as in Example 3 was carried out, and the filter performance Evaluation was performed. The results are shown in Table 2.
- Example 12 Except for changing the fiber structure (laminated fiber structure) as shown in Table 2, the same operation as in Example 12 was performed to evaluate the separator performance. The results are shown in Table 2.
- a separator evening performance evaluation was performed in the same manner as in Example 13 except that calendaring was performed at 3 00 k and 3 00 k g f / cm. The results are shown in Table 2.
- ionic properties such as alkali metal salts can be obtained.
- Suitable for products that do not like mixing, such as filters for gas and liquid filtration and separators for electronic components 3 can be deployed and is useful for the textile industry.
- the fiber structure of the present invention includes moisture permeable waterproof materials, selective permeable membranes such as liquid or gas separators, various filter capacitors, displays, electromagnetic shielding materials, electronic papers such as electronic paper Materials, Intelligent Films' Sheet-like materials such as paper, Cleaners, Sound absorbing materials, Underwear, Sensors, Cosmetic tools, Artificial muscles, Coating materials, Smart fabrics, Wearable electronics, Security suits, Health fiber licks, It can also be used for fine medical purposes, and can be used in a wide range of industrial applications.
- moisture permeable waterproof materials such as liquid or gas separators, various filter capacitors, displays, electromagnetic shielding materials, electronic papers such as electronic paper Materials, Intelligent Films' Sheet-like materials such as paper, Cleaners, Sound absorbing materials, Underwear, Sensors, Cosmetic tools, Artificial muscles, Coating materials, Smart fabrics, Wearable electronics, Security suits, Health fiber licks, It can also be used for fine medical purposes, and can be used in a wide range of industrial applications.
- PET Polyethylene terephthalate
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Textile Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Dispersion Chemistry (AREA)
- Mechanical Engineering (AREA)
- Nanotechnology (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Artificial Filaments (AREA)
- Nonwoven Fabrics (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2008801119383A CN101827962B (zh) | 2007-10-18 | 2008-10-15 | 芳族聚酰胺纳米纤维及含有它的纤维结构体 |
JP2009538220A JP5249942B2 (ja) | 2007-10-18 | 2008-10-15 | 芳香族ポリアミドナノファイバー及びそれを含む繊維構造体 |
US12/738,220 US20100288692A1 (en) | 2007-10-18 | 2008-10-15 | Aromatic polyamide nanofiber and fiber structure containing the same |
EP08840009.8A EP2202337B1 (en) | 2007-10-18 | 2008-10-15 | Separator for electronic components comprising aromatic polyamide nanofiber |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007-271357 | 2007-10-18 | ||
JP2007271357 | 2007-10-18 | ||
JP2007330148 | 2007-12-21 | ||
JP2007-330148 | 2007-12-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009051263A1 true WO2009051263A1 (ja) | 2009-04-23 |
Family
ID=40567521
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2008/069071 WO2009051263A1 (ja) | 2007-10-18 | 2008-10-15 | 芳香族ポリアミドナノファイバー及びそれを含む繊維構造体 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20100288692A1 (ja) |
EP (1) | EP2202337B1 (ja) |
JP (1) | JP5249942B2 (ja) |
KR (1) | KR20100068483A (ja) |
CN (1) | CN101827962B (ja) |
WO (1) | WO2009051263A1 (ja) |
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CN102471934A (zh) * | 2009-07-15 | 2012-05-23 | 帝斯曼知识产权资产管理有限公司 | 聚酰胺纳米纤维的静电纺丝 |
JP2013181263A (ja) * | 2012-03-02 | 2013-09-12 | Teijin Ltd | 芳香族ポリアミドナノファイバー構造体及びそれからなるセパレータ |
JP2014025171A (ja) * | 2012-07-27 | 2014-02-06 | Teijin Ltd | 微細繊維構造体 |
TWI690633B (zh) * | 2019-10-04 | 2020-04-11 | 財團法人紡織產業綜合研究所 | 熔噴不織布 |
JP2021155906A (ja) * | 2017-06-08 | 2021-10-07 | アセンド・パフォーマンス・マテリアルズ・オペレーションズ・リミテッド・ライアビリティ・カンパニーAscend Performance Materials Operations Llc | ポリアミドナノファイバー不織布 |
CN115652465A (zh) * | 2022-11-09 | 2023-01-31 | 清华大学 | 一种芳纶纳米纤维的制备方法 |
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US20120318752A1 (en) * | 2010-12-20 | 2012-12-20 | E.I. Du Pont De Nemours And Company | High porosity high basis weight filter media |
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CN102471934A (zh) * | 2009-07-15 | 2012-05-23 | 帝斯曼知识产权资产管理有限公司 | 聚酰胺纳米纤维的静电纺丝 |
JP2012533006A (ja) * | 2009-07-15 | 2012-12-20 | ディーエスエム アイピー アセッツ ビー.ブイ. | ポリアミドナノファイバの電界紡糸 |
JP2013181263A (ja) * | 2012-03-02 | 2013-09-12 | Teijin Ltd | 芳香族ポリアミドナノファイバー構造体及びそれからなるセパレータ |
JP2014025171A (ja) * | 2012-07-27 | 2014-02-06 | Teijin Ltd | 微細繊維構造体 |
JP2021155906A (ja) * | 2017-06-08 | 2021-10-07 | アセンド・パフォーマンス・マテリアルズ・オペレーションズ・リミテッド・ライアビリティ・カンパニーAscend Performance Materials Operations Llc | ポリアミドナノファイバー不織布 |
JP7170091B2 (ja) | 2017-06-08 | 2022-11-11 | アセンド・パフォーマンス・マテリアルズ・オペレーションズ・リミテッド・ライアビリティ・カンパニー | ポリアミドナノファイバー不織布 |
TWI690633B (zh) * | 2019-10-04 | 2020-04-11 | 財團法人紡織產業綜合研究所 | 熔噴不織布 |
CN115652465A (zh) * | 2022-11-09 | 2023-01-31 | 清华大学 | 一种芳纶纳米纤维的制备方法 |
CN115652465B (zh) * | 2022-11-09 | 2023-12-19 | 清华大学 | 一种芳纶纳米纤维的制备方法 |
Also Published As
Publication number | Publication date |
---|---|
CN101827962B (zh) | 2012-10-10 |
KR20100068483A (ko) | 2010-06-23 |
JPWO2009051263A1 (ja) | 2011-03-03 |
CN101827962A (zh) | 2010-09-08 |
EP2202337A4 (en) | 2011-01-12 |
US20100288692A1 (en) | 2010-11-18 |
JP5249942B2 (ja) | 2013-07-31 |
EP2202337A1 (en) | 2010-06-30 |
EP2202337B1 (en) | 2013-04-17 |
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