WO2017018558A1 - 나노섬유 기반 복합 가연사 및 그의 제조방법 - Google Patents
나노섬유 기반 복합 가연사 및 그의 제조방법 Download PDFInfo
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- WO2017018558A1 WO2017018558A1 PCT/KR2015/007917 KR2015007917W WO2017018558A1 WO 2017018558 A1 WO2017018558 A1 WO 2017018558A1 KR 2015007917 W KR2015007917 W KR 2015007917W WO 2017018558 A1 WO2017018558 A1 WO 2017018558A1
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- nanofiber
- yarn
- twisted yarn
- slitting
- based composite
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
- D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
- D02G1/0206—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by false-twisting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H21/00—Apparatus for splicing webs
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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
- 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
- D01D5/24—Formation of filaments, threads, or the like with a hollow structure; Spinnerette packs therefor
- D01D5/247—Discontinuous hollow structure or microporous structure
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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
- D01D5/42—Formation of filaments, threads, or the like by cutting films into narrow ribbons or filaments or by fibrillation of films or filaments
- D01D5/426—Formation of filaments, threads, or the like by cutting films into narrow ribbons or filaments or by fibrillation of films or filaments by cutting films
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
- D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
- D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
- D02G1/0286—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist characterised by the use of certain filaments, fibres or yarns
- D02G1/0293—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist characterised by the use of certain filaments, fibres or yarns composed, at least in part, of natural fibres
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
- D02G3/04—Blended or other yarns or threads containing components made from different materials
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
- D02G3/06—Threads formed from strip material other than paper
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
- D02G3/26—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre with characteristics dependent on the amount or direction of twist
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
- D02G3/38—Threads in which fibres, filaments, or yarns are wound with other yarns or filaments, e.g. wrap yarns, i.e. strands of filaments or staple fibres are wrapped by a helically wound binder yarn
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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
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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
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/005—Synthetic yarns or filaments
- D04H3/007—Addition polymers
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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
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/16—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
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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
- D01F6/02—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
- D01F6/12—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 from polymers of fluorinated hydrocarbons
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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]
Definitions
- nanofiber tape yarn is prepared by precision slitting of the nanofiber membrane prepared by electrospinning, and then nanofiber single yarn or nanofiber single yarn and natural or synthetic fiber obtained by twisting nanofiber tape yarn.
- the present invention relates to a nanofiber based composite twisted yarn obtained by composite yarn and a method for manufacturing the composite yarn.
- nanofibers refers to fibers having a diameter of 1 ⁇ m or less, which is the limit diameter of a conventional spinning process.
- Manufacturing methods of nanofibers include drawing, template synthesis, self-assembly, chemical vapor deposition (CVD), phase separation, and electrospinning. And various methods such as hybridization with existing spinning processes.
- Electrospinning is one of the most widely researched and developed fields in terms of mass production, handleability, selection of various raw materials, wide range of applications and processing, and early industrialization through the success of mass production and fusion with existing materials. It's a way to step.
- Electrospinning technology applies nano-fiber materials to collectors as the solvent is volatilized during the application of high voltage to the polymer solution or melt, and the polymer solution is sprayed on the surface charged with negative (-) pole or earth.
- This method is manufactured by laminating in a web or non-woven state.
- the nanofiber web is made of a nonwoven fabric having a fiber diameter of less than 1 ⁇ m, and the porosity is 60 to 90% and the average pore size is 0.2 to 1.0 ⁇ m depending on the diameter and thickness of the fiber. .
- nanofiber webs are generally poor in handling in industrial applications, and have poor physical properties such as tension and tensile strength, so that they can be composited with existing materials, such as secondary battery separator materials, environmental filter materials, clothing membrane materials, Although it can be used for medical purposes, medical materials, etc. can be used.
- existing materials such as secondary battery separator materials, environmental filter materials, clothing membrane materials, although it can be used for medical purposes, medical materials, etc. can be used.
- non-woven fabrics made of nanofibers there is a limit to the wide range of applications for high strength materials and various applications.
- Synthetic fibers and natural fibers are twisted to increase the strength of the yarn, and to improve the weaving and knitting by giving the touch, elasticity and focus to the yarn.
- the mono filament or multi filament state, and natural fibers are twisted into the yarn in the form of spun yarn, and can be divided into the extreme twist yarn from the low-twist yarn according to the material and the number of twists.
- the diameter of the fiber is composed of several tens to several tens of micrometers, and when compared with the electrospun nanofibers, there are several tens to thousands of times thicker features. Therefore, if the same material and the same thickness is twisted, the nanofibers have high porosity, so it is easy to lighten the weight of structures such as woven and knitted fabrics, and can improve the contact area by using high surface area There is a characteristic that can make functionalization convenient.
- Patent Document 1 discloses a method for producing nanofiber composite yarn.
- a nanofiber tape yarn is manufactured by laminating and then slitting a spinning web composed of polymer nanofibers having a fiber diameter of less than 1 ⁇ m by a technique proposed by the present inventor, and twisting the yarn by a weaving machine and a twisting machine to make a nano
- Patent Literature 1 conceptually defines a technique for producing a composite yarn of nanofibers alone and a covering yarn manufacturing method.
- the present inventors have improved the manufacturing technology of the nanofiber composite yarn proposed in Patent Document 1 more innovatively to improve the continuous productivity and practicality of nanofiber-based false twisted yarn, and the convergence and hybridization of the nanofiber yarn single yarn and the existing spun yarn or synthetic fiber yarn Through the advantages of light weight, large specific surface area, moisture permeability, functionalization, and the like, and to realize the advantages of physical, chemical performance and the like existing materials have been completed through the present invention.
- the present invention is proposed to improve the conventional physical properties of the existing material by fusion-converging the nanofiber yarn alone or the existing fiber yarn, the nanofibers are electrospun during manufacture, after drying and calendering process winding and rolling (Roll) Manufactured in the form.
- the shape of the roll is manufactured to a length of about 500M due to the handling and processing characteristics, the first slitting to fit the slitter width before the precision slitting process (secondary slitting) for the production of false twist yarn.
- Precision slitting of the primary slitting sample has the disadvantage that the operation is terminated within a few minutes, the continuity of the work is reduced and process loss occurs, to improve the workability and quality, the primary slitting sample is bonded to the maximum There is a need to extend the length and to ensure that the joints are not cut in subsequent processing.
- the present invention which is devised to solve the above problems, the object of the polymer nanofiber-based composite to enable a continuous process by bonding the primary slitting nanofibers for the continuous manufacturing of nanofiber false twist yarn
- the present invention provides a false twist yarn and a method of manufacturing the same.
- Another object of the present invention is a polymer nanofiber-based composite flammable that can be used as a base material in the industrial field because the physical properties such as elongation is improved by heat-setting or hot stretching the nanofiber tape yarn or false twist yarn
- the present invention provides a method for manufacturing.
- Still another object of the present invention is to provide a nanofiber based composite twisted yarn and a method of manufacturing the same, which can further expand the use of nanofibers by improving physical properties through fusion with existing materials.
- dissolving a fiber-shaped polymer material in a solvent to prepare a spinning solution Electrospinning the spinning solution to obtain a polymer nanofiber web composed of an average diameter of less than 1 ⁇ m; Laminating the nanofiber web to obtain a polymer nanofiber membrane; Primary slitting the polymer nanofiber membrane to form a plurality of slitting rolls; Bonding a nanofiber membrane between the plurality of slitting rolls to form a large diameter slitting roll; Secondary slitting the large-diameter slitting roll to obtain a nanofiber tape yarn; And obtaining composite twisted yarn by composite twisting the twisted yarn obtained by twisting the nanofiber tape yarn or the nanofiber tape yarn with natural fiber yarn or synthetic fiber yarn; and a method of manufacturing a nanofiber based composite twisted yarn To provide.
- the fiber-formable polymer material is dissolved in a suitable solvent to make a spinning concentration, and then, using an electrospinning device, the nanofibers having a diameter of less than 1 ⁇ m are placed on a transfer sheet to have a basis weight of 0.5 to 100 gsm (gram per square meter). Spinning produces nanofiber webs.
- basis weight is defined as the radiation amount of the polymer per unit area.
- Polymers usable in the present invention include, for example, PVdF (polyvinylidene fluoride), nylon (nylon), nitrocellulose (PU), polyurethane (polyurethane), PC (polycarbonate), PS (polystryene), PAN (polyacrylonitrile), PLA (polylatic acid), PLGA, (polylactic-co-glycolic acid), PEI (polyethyleneimine), PPI (polypropyleneimine), PMMA (polymethylmethacrylate), PVC (polyvinylcholride), PVAc (polyvinylacetate), polystyrene divinylbenzene copolymer (polystylene divinylbenzene) copolymer (PVC), polyvinyl chloride (PVC), polyvinyl alcohol (PVA), polyvinyl acetate (PVAc), polyvinyl pyrrolidone (PVP), or the like, and may be composed of two or more kinds of compounds. As
- solvents usable in the present invention are dimethyl formamide (di-methylformamide, DMF), dimethyl acetamide (di-methylacetamide, DMAc), THF (tetrahydrofuran), acetone (acetone), alcohol (alcohol), chloroform ( At least one selected from the group consisting of chloroform, DMSO (dimethyl sulfoxide), dichloromethane, acetic acid, formic acid, NMP (N-Methylpyrrolidone), fluorinated alcohols and water can be used. .
- DMF dimethyl formamide
- DMAc dimethyl acetamide
- THF tetrahydrofuran
- acetone acetone
- alcohol alcohol
- chloroform At least one selected from the group consisting of chloroform, DMSO (dimethyl sulfoxide), dichloromethane, acetic acid, formic acid, NMP (N-Methylpyrrolidone), fluorinated alcohol
- the method of obtaining the nanofiber membrane by laminating the nanofiber web may be performed by at least one of pressurization, calendering, heat treatment, rolling, thermal bonding, and ultrasonic bonding.
- the nanofiber membrane obtained by laminating may be wound by winding the nanofiber membrane and the transfer sheet using a winder and a rewinder device, or by separating the nanofiber membrane and the transfer sheet and winding only the nanofiber membrane alone to roll the nanofibers.
- the nanofiber membrane thus obtained is first slitted to fit the width of the precision slitter to form a plurality of slitting rolls, and the length is obtained by joining the slitting roll and the slitting roll and winding them on one roll for continuity of the precision slitting operation. Form a large diameter slitting roll of at least 500M.
- the bonding method may be performed by various methods such as thermal bonding, ultrasonic bonding, pressing, and rolling.
- the width of the junction is preferably used in the range of 0.5 mm to 1 mm. Bonding less than 0.5mm may cause trimming in the subsequent precision slitting and twisting process. If it exceeds 1mm, the joining part may be protruded during combusting and the merchandise may be degraded.
- the large-sized large diameter slitting roll is fixed to fit the precision slitter, followed by second slitting to obtain a tape yarn composed of nanofibers.
- the production of the nanofiber tape may be carried out by various methods such as cutting and slitting, and the width of the nanofiber tape is preferably set in the range of 0.1 mm to 5 mm.
- the nanofiber tape yarn having a basis weight of 0.5 to 100 gsm and a width of 0.1 to 5 mm.
- the flammable T / M in the range that does not trim the nanofibers or conventional fiber yarns using a two-for-one twister, Fence twister, compound twister, covering twister, etc. (Annual angle of 5 to 15 °) It is preferable to perform ultra strong yarn at a T / M 2500 or more (annual angle of 30 to 45 °) and then to burn it to meet the end purpose.
- composite twisted yarn composite twisted with natural fibers such as cotton, silk, wool, and Hanji, or composite twisted with synthetic fibers such as PET, nylon, PP, PU, PLA, and PLGA, and various kinds of yarns are suited to the purpose. It can use and it is not specifically limited.
- the tension can be imparted by passing the nanofiber tape yarn or twisted yarn between an updisk tensioner and a downdisk tensioner.
- stretching and heat setting may be simultaneously performed by performing heat treatment at a temperature below the melting point of the material.
- Nanofiber-based composite twisted yarn obtained according to the manufacturing method is a nanofiber tape yarn comprising at least one junction or a twisted yarn twisted the nanofiber tape yarn; And natural fiber yarn or synthetic fiber yarn composite composite with the nanofiber tape yarn or false twist yarn, wherein the nanofiber tape yarn is made of a fiber moldable polymer material, and polymer nanofibers having an average diameter of less than 1 ⁇ m are integrated. It is characterized by consisting of a nanofiber web having fine pores.
- the present invention it is possible to improve the productivity by bonding the nanofiber membrane between the primary slitting slitting roll and the slitting roll for continuous manufacture of the nanofiber false twisted yarn.
- the nanofiber tape yarn or twisted yarn is heat-set or heat-stretched to improve physical properties such as elongation, so that weaving and knitting are excellent and can be used as a base material in the industrial field.
- the nanofiber-based composite twisted yarn according to the present invention has a high porosity per unit area, which makes it possible to reduce the weight of the fabricated products such as weaving and knitting, and to increase the contact area due to the high surface area, and to support various functionalities such as drug support. It is effective to provide a function as a basic material throughout.
- nanofibers can be further extended as physical properties are improved through fusion with existing materials.
- composite yarn twisted nanofiber twisted yarn with natural fibers or synthetic fibers can provide a high-performance filament yarn having a variety of forms and functions, such as tensile strength, elasticity, thickness.
- FIG. 1 is a process flowchart showing a method for manufacturing a nanofiber based composite twisted yarn according to the present invention.
- FIG. 2 is a scanning electron micrograph of the PVDF nanofiber web obtained in accordance with Example 1.
- Figure 3 (a) is a photo of rolling the PVDF nanofiber membrane obtained by calendering the PVDF nanofiber web of Figure 2, (b) is the process of primary slitting the roll-shaped nanofiber membrane using a primary slitter (C) is a conceptual diagram showing the process of obtaining a large diameter slitting roll by bonding the nanofiber membrane between the slitting roll and the slitting roll, (d) is a photograph of the large diameter slitting roll.
- Figure 4 (a) is a photograph showing the secondary slitting process of the large diameter slitting roll using a precision slitter, (b) is a nanofiber tape yarn wound on a flat bobbin, (c) a scanning electron microscope Photograph (d) is a photograph of a nanofiber tape yarn wound on an "H" bobbin.
- Figure 5 (a) is a cone sample picture of the bubble gun twisted yarn manufactured using a bubble gun twister, (b) is a scanning electron micrograph of the bubble gun twisted yarn.
- Figure 6 (a) is a nanofiber obtained by composite twisting the nanofiber twisted yarn twisted by the right edge (S edge) and the left edge (Z edge) to T / M 500 under the condition of T / M 1000 using a composite twisting machine A sample photograph of a single composite twisted yarn, (b) is a scanning electron micrograph of a nanofiber composite twisted yarn (two-ply yarn).
- Figure 7 (a) is a schematic diagram of the composite false twisted yarn manufacturing process of natural and synthetic fibers and nanofiber tape yarns, (b) is a composite twist of PVDF nanofiber tape yarns and nylon 20d monofilament yarn under the conditions of T / M 1000 It is the scanning electron micrograph of the composite false twisted yarn obtained by performing.
- FIG. 8 is a scanning electron micrograph of a composite twisted yarn obtained by composite twisting a PVDF nanofiber tape yarn and a cotton 60 number.
- Figure 9 shows a schematic diagram of the thermal stretching of PVDF nanofiber tape yarns, (b) hot-rolled PVDF nanofiber tape yarn slitting to 1.5mm by varying the speed of the up disk and down disk at a temperature of 150 °C
- a drawing is a process chart which shows a process.
- the method of manufacturing a composite false twisted yarn containing nanofibers according to the present invention, first, the solution of a fiber-forming polymer in a suitable solvent to prepare a solution in a spinning concentration, and transferred to the spinneret of the electrospinning apparatus After applying a high voltage to the nozzle and electrospinning to a basis weight of 0.5 ⁇ 100gsm, laminating it first and then slitting second, precision slitting to a width of 0.1 ⁇ 5mm nanofiber tape yarn consisting of nanofiber Get
- the nanofiber tape yarn thus obtained is chanced (S lead) or left edge (Z lead) using an existing twisting machine to obtain a twisted yarn composed of nanofibers.
- the prepared nanofiber tape yarn or nanofiber sole twisted yarn is heat-set or heat-stretched so as not to be untwisted through a post-treatment process to improve physical properties of the nanofiber.
- Figure 1 shows the overall flow chart of the manufacturing method of nanofiber based composite twisted yarn according to the present invention.
- the polymer material is not particularly limited as long as it is a polymer in which nanofibers are formed by electrospinning thermosetting or thermoplastic polymers.
- the content of the high molecular material is about 5 to 50% by weight, and less than 5% by weight is difficult to form a membrane by spraying onto beads rather than forming nanofibers, and more than 50% by weight.
- the viscosity of the spinning solution is so high that it is difficult to form fibers due to poor spinning properties. Therefore, the spinning solution is not particularly limited, but it is preferable to control the morphology of the fiber to a concentration that is easy to form a fibrous structure.
- the spinning solution is transferred to a spin pack using a metering pump, and at this time, electrospinning is performed by applying a voltage to the spinning pack using a high voltage regulator.
- the voltage used can be adjusted up to 0.5kV to 100kV
- the collector (collector) can be used by grounding or charging to the (-) pole.
- the distance between the spin pack and the collector is preferably adjusted to 5 ⁇ 50 cm.
- the discharge amount during spinning is uniformly discharged using a metering pump to spin, and it is preferable to spin in an environment with a relative humidity of 30 to 80% in a chamber that can control temperature and humidity during spinning.
- a nanofiber web made of polymer nanofibers is formed by electrospinning nanofibers on one surface of a transfer sheet (or support) in which a spinning solution is transferred from a spin pack along a lower collector using a transfer method. do.
- the polymer nanofiber web collected in the transfer sheet has three-dimensional micropores by integrating the polymer nanofibers.
- the transfer sheet may use a polyolefin-based film such as nonwoven fabric, PE, PP, or the like made of paper (paper) or a polymer material which is not dissolved by a solvent contained therein when spinning the spinning solution. .
- a polyolefin-based film such as nonwoven fabric, PE, PP, or the like made of paper (paper) or a polymer material which is not dissolved by a solvent contained therein when spinning the spinning solution.
- the electrospun nanofibers are accumulated in the collector and are stacked along the pattern of the integrated part. Therefore, in order to make a porous polymer nanofiber web of nanofibers having good uniformity (pore size, air permeability, thickness, weight, etc.), it is preferable to spin on a transfer sheet such as paper and peel off after the subsequent process treatment.
- laminating is a step of film-forming a nanofiber web by pressing and fixing by means of heat treatment or ultrasonic wave so that the individual nanofibers are not moved alone.
- the basis weight is less than 0.5 gsm, the probability of defects during handling or slitting is high, and if the weight exceeds 100 gsm, the manufacturing cost increases, so the basis weight is 0.5 to 100 gsm.
- laminating can be carried out with a heat treatment, it is preferable to carry out in a temperature range of 50 to 250 °C that the polymer used is not melted. If the temperature is less than 50 °C, the fusion between nanofibers is unstable because the heat treatment temperature is too low, or the polymer with high glass transition temperature hardly occurs between the nanofibers. . In addition, when the heat treatment temperature exceeds 250 ° C., the polymer constituting the nanofibers is not preferable because it is likely to lose the fibrous structure due to melting.
- the nanofiber membrane is manufactured on a transfer sheet when manufacturing a nanofiber web, so after lamination, the nanofiber membrane is wound by rolling with the transfer sheet at the same time, or winding and unwinding with the nanofiber membrane alone while separating the transfer sheet. Rolling through to prepare a roll.
- the width of the nanofiber membrane manufactured in roll shape can be variously manufactured to 500 ⁇ 2,000mm depending on the spinning equipment, but the length is about 500M.
- the roll-type nanofiber membrane is slitting together with the bobbin to fit the precision slitter width using a device as shown in FIG. 3 (b) to form a plurality of slitting rolls (S14).
- the primary slitting plural slitting rolls are wound and unwound by joining nanofiber membranes between the slitting rolls so that the second slitting work in the precision slitter is continuously performed for a certain time to improve productivity. and the length is more than 500M, the at least 1,000M by rolling onto a forming sleeve tingrol of large diameter (S15) through.
- Nanofiber tapes composed of nanofiber membranes by slitting large diameter slitting rolls obtained by increasing the number of primary slitting rolls to a width of 0.1 to 5 mm by various methods using a precision slitter such as a cutter or a slitter.
- a precision slitter such as a cutter or a slitter.
- the width of the slitting nanofiber tape yarn is to be less than 0.1 mm, the width is too small, so that it is difficult to cut smoothly using the slitter, and the probability of cutting due to tension and twist is increased.
- the width of the slitting exceeds 5mm, the probability of occurrence of uneven twisting in the twisting step increases, and the thickness of the twisted yarn becomes thick, thereby degrading the marketability as a fiber yarn. Therefore, it is preferable that the nanofiber tape yarn has a basis weight of 0.5 to 100 gsm and a width of 0.1 to 5 mm.
- the prepared nanofiber tape yarn is given a twist (S lead) or a left edge (Z lead) to the nanofiber tape yarn through the twisting yarn (S17).
- T / M twisting / meter needs to be carried out by less than 500 or less than 2500 or more extreme twisted yarns to suit the polymer type or end purpose.
- two twisted yarns composed of nanofibers may be manufactured by composite twisting two strands of twisted nanofiber twisted yarns by giving the right edge (S edge) or the left edge (Z edge) (S17).
- the nanofiber tape yarn and the nanofiber tape yarn may be spliced respectively to undergo a continuous twisting step.
- the nanofiber tape yarns may be used as well as polymers of the same type, as well as the different types of nanofiber tape yarns.
- the composite fiber twisted yarn (S-yeon, Z-yeon, two-ply yarn) composite composite with natural fiber or synthetic fiber can be produced (S18).
- cotton, silk, wool, cellulose, etc. can be selected as the final fiber
- synthetic fiber is PET, nylon (Nylon), PP, PE, PVC, PU, PTFE, PVDF, etc. It can be mixed and selected to fit, but it is not limited to a specific material.
- the prepared nanofiber single twisted yarn or composite twisted yarn may be carried out to prevent twisting or give strength by a method such as heat drawing and heat setting (S19).
- a method such as heat drawing and heat setting (S19).
- the stretching method various methods such as hot stretching and cold stretching can be used, and heat setting is preferably used in a temperature range where the kinks do not loosen depending on the material used.
- Preferred thermal stretching and heat setting are carried out in a temperature range between the glass transition temperature (Tg) and the melting temperature (Tm) of the polymer used.
- the hot drawing, heat setting process may be carried out in the pre-process as well as the post-process of the composite combustion.
- the spinning solution is transferred to a spinning nozzle using a metering pump, which is spun under an applied voltage of 25 kV, a distance of 20 cm from the spinneret to the current collector, and a discharge amount of 0.05 cc / g per minute at 30 ° C, 60% relative humidity, and normal pressure. was carried out to obtain a nanofiber web.
- Figure 2 shows a scanning electron micrograph of the PVDF nanofiber web obtained according to the present embodiment, it can be seen that consists of uniform PVDF nanofibers having an average diameter of about 300nm.
- the basis weight of the nanofiber web was about 5 gsm, and the PVDF nanofiber membrane having a length of about 500 M and a thickness of 10 ⁇ m was formed by calendering at a pressure of 100 g / cm 2 using a roller heated to 150 ° C. After obtained, rolled with PVDF nanofiber membrane alone.
- the nanofiber membrane thus obtained was first sled to fit the second precision slitter width, and then a plurality of slitting rolls were prepared, and then the bonding surface was bonded to each other through the nanofibrous membrane ultrasonic bonding machine between the slitting rolls. Rewinding yielded a large diameter slitting roll having a length of at least 500M.
- Figure 3 (a) is a photo of rolling the PVDF nanofiber membrane obtained by calendering the PVDF nanofiber web of Figure 2
- Figure 3 (b) is a primary slitting of the roll-type nanofiber membrane using a primary slitter
- Figure 3 (c) is a conceptual diagram showing a process for obtaining a large diameter slitting roll by bonding the nanofiber membrane between the slitting roll and the slitting roll
- Figure 3 (d) shows a photo of the large diameter slitting roll.
- the large diameter slitting roll prepared in Example 1 was subjected to secondary slitting using a secondary precision slitter having a knife spacing of 1.5 mm and 12 knives (see FIG. 4 (a)), followed by flat bobbin and H Rolling on a bobbin (see Fig. 4 (b), Fig. 4 (d)) to obtain a PVDF nanofiber tape yarn composed of a nanofiber membrane.
- Figure 4 (c) shows a scanning electron micrograph of the nanofiber tape, it was confirmed that the precision slitting with a width of 1.5mm.
- the nanofiber tape yarn prepared in Example 2 was subjected to coincidence (S yeon) by T / M 500 using a two-poon twister to prepare a twisted yarn of nanofibers alone.
- 5 (a) and 5 (b) respectively show cone sample pictures of a two-point twisted twisted yarn manufactured using a two-point twisted twister and a scanning electron micrograph of the two-point twisted twisted yarn. As shown in the scanning electron micrograph of FIG. 5 (b), the false twist yarn composed of the nanofibers alone was confirmed.
- the PVDF nanofiber tape yarn prepared in Example 2 the twisted (S lead) and the left edge (Z lead) of the T / M 500 twisted nanofiber twisted yarn twisted to T / M 500 of the T / M 1000 Composite twisted yarn under the conditions to prepare a composite twisted yarn of the nanofibers alone.
- FIG. 6 (a) shows nanofibers obtained by complex twisting nanofiber twisted yarns twisted at the right edge (S edge) and left edge (Z edge) with T / M 500 under the condition of T / M 1000 using a composite twister.
- Sample picture of the composite twisted yarn Figure 6 (b) shows a scanning electron micrograph of the nanofiber composite twisted yarn (two-ply yarn). As shown in FIG. 6 (b), it was confirmed that the nanofiber tape yarns were composited twice.
- PVDF nanofiber tape yarn prepared in Example 2 was subjected to composite twisting under the conditions of nylon 20d monofilament yarn and T / M 1000 to prepare a composite twisted yarn of nanofibers and synthetic fibers.
- Figure 7 (a) is a schematic diagram of a composite false twisted yarn manufacturing process of natural and synthetic fibers (Synthetic fiber) and nanofiber (Nanofiber) tape yarn
- Figure 7 (b) is a PVDF nanofiber tape yarn and nylon 20d monofilament yarn T /
- the scanning electron micrograph of the composite twisted yarn obtained by carrying out composite twisting under the condition of M 1000 is shown. As shown in Figure 7 (b) it was confirmed that the composite flame between the nanofibers and synthetic fibers.
- FIG. 8 shows a scanning electron micrograph of PVDF nanofiber tape yarn and composite twisted yarn in which the number 60 cotton was composite twisted.
- Fig. 9A is a schematic diagram of hot drawing
- Fig. 9B is a process photograph showing the hot drawing step.
- the PVDF nanofiber tape yarn of Example 2 (slitting yarn) and the PVDF nanofiber tape yarn of Example 2 were subjected to coincidence (S lead) of T / M 500 by using a bubbler yarn.
- Tensile strength was tested according to the test specification of KSK0412 described in Table 1 on the composite twisted yarn (composite twisted yarn) of the nanofibers alone obtained by the composite twisting under the conditions of T / M 1000 using the results shown in the following table. 2 is described.
- the present invention can be applied to the production of nanofiber-based composite twisted yarn obtained by twisting nanofiber single yarn or nanofiber sole twisted yarn obtained by twisting nanofiber tape yarn and composite fiber with natural or synthetic fibers.
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Abstract
Description
연사종류 | 시험기 종류 | 클램프 사이의 거리 | 인장속도 | 시료수 | 시험규격 | 번수(D) |
슬리팅사 | 정속 인장식 | 25㎝ | 30±2(㎝/min) | 5개 | KSK0412 | 211.32 |
투포원연사 | 208.26 | |||||
복합연사 | 468 |
연사종류 | 최대하중(N) | 최대하중시의 신장(mm) | 최대하중의 강도 (gf/den) | 파단(표준)시의 강도(gf/den) | 파단(표준)시의 인장변형(%) | 최대하중시의 인장변형(%) |
슬리팅사 | 1.12 | 257.43994 | 0.54215 | -0.02684 | 108.91198 | 102.97598 |
투포원사 | 1.05 | 177.43597 | 0.51641 | -0.02206 | 75.59679 | 70.97439 |
복하연사 | 2.36 | 331.33062 | 0.51421 | -0.0082 | 140.74104 | 132.53225 |
Claims (15)
- 섬유 성형성 고분자 물질을 용매에 용해하여 방사용액을 제조하는 단계;상기 방사용액을 전기방사하여 평균직경 1㎛ 미만으로 구성되는 고분자 나노섬유 웹을 얻는 단계;상기 나노섬유 웹을 라미네이팅하여 고분자 나노섬유 멤브레인을 얻는 단계;상기 고분자 나노섬유 멤브레인을 1차 슬리팅하여 복수의 슬리팅롤로 만드는 단계;상기의 복수의 슬리팅롤 사이에 나노섬유 멤브레인을 접합하여 대구경 슬리팅롤을 형성하는 단계;상기 대구경 슬리팅롤을 2차 슬리팅하여 나노섬유 테이프사를 얻는 단계; 및상기 나노섬유 테이프사 또는 나노섬유 테이프사를 가연하여 얻어진 가연사를 천연섬유사 또는 합성섬유사와 복합가연하여 복합 가연사를 얻는 단계;를 포함하는 것을 특징으로 하는 나노섬유 기반 복합 가연사의 제조방법.
- 제1항에 있어서,상기 1차 슬리팅된 나노섬유 멤브레인의 폭은 2차 슬리팅이 이루어지는 정밀 슬리터의 폭에 대응하여 설정되는 것을 특징으로 하는 나노섬유 기반 복합 가연사의 제조방법.
- 제1항에 있어서,상기 복수의 슬리팅롤 사이에 접합되는 나노섬유 멤브레인의 접합부는 0.5 내지 1㎜ 범위로 설정되는 것을 특징으로 하는 나노섬유 기반 복합 가연사의 제조방법.
- 제3항에 있어서,상기 복수의 슬리팅롤 사이에 접합되는 나노섬유 멤브레인의 접합은 열접합, 초음파 접합, 가압 및 롤링 중 어느 하나의 방법으로 수행되는 것을 특징으로 하는 나노섬유 기반 복합 가연사의 제조방법.
- 제1항에 있어서,상기 대구경 슬리팅롤은 500M 이상의 길이로 이루어진 것을 특징으로 하는 나노섬유 기반 복합 가연사의 제조방법.
- 제1항에 있어서,상기 나노섬유 테이프사는 평량 0.5 내지 100gsm, 폭이 0.1 내지 5㎜ 범위로 설정되는 것을 특징으로 하는 나노섬유 기반 복합 가연사의 제조방법.
- 제1항에 있어서,상기 가연사는 나노섬유 테이프사 단독의 우연사 내지는 좌연사, 상기 우연사와 좌연사를 복합연사하여 얻어진 2합사 중 어느 하나인 것을 특징으로 하는 나노섬유 기반 복합 가연사의 제조방법.
- 제1항에 있어서,상기 가연사는 T/M(twisting/meter) 500 이하의 감연사에서 T/M 2500 이상의 극강 연사인 것을 특징으로 하는 나노섬유 기반 복합 가연사의 제조방법.
- 제1항에 있어서,상기 가연사 및 복합 가연사의 꼬임이 풀리는 것을 방지하도록 가연사 및 복합 가연사를 열연신 또는 열고정하는 단계를 더 포함하는 것을 특징으로 하는 나노섬유 기반 복합 가연사의 제조방법.
- 제9항에 있어서,상기 열연신 또는 열고정 단계는 상기 고분자의 유리전이온도(Tg)와 용융온도(Tm) 사이의 온도범위에서 실시하는 것을 특징으로 하는 나노섬유 기반 복합 가연사의 제조방법.
- 제9항에 있어서,상기 가연사 및 복합 가연사의 열연신은 업디스크와 다운디스크의 속도를 달리하여 이루어지는 것을 특징으로 하는 나노섬유 기반 복합 가연사의 제조방법.
- 적어도 하나의 접합부를 포함하는 나노섬유 테이프사 또는 상기 나노섬유 테이프사를 가연한 가연사; 및상기 나노섬유 테이프사 또는 가연사와 복합가연되는 천연섬유사 또는 합성섬유사;를 포함하며,상기 나노섬유 테이프사는 섬유 성형성 고분자 물질로 이루어지며, 평균직경 1㎛ 미만의 고분자 나노섬유가 집적되어 미세 기공을 갖는 나노섬유 웹으로 이루어진 것을 특징으로 하는 나노섬유 기반 복합 가연사.
- 제12항에 있어서,상기 나노섬유 테이프사는 나노섬유 웹을 라미네이팅하여 얻어진 고분자 나노섬유 멤브레인을 슬리팅한 것을 특징으로 하는 나노섬유 기반 복합 가연사.
- 제12항에 있어서,상기 접합부는 0.5 내지 1㎜ 범위로 접합되고,상기 나노섬유 테이프사는 평량 0.5 내지 100gsm, 폭이 0.1 내지 5㎜ 범위로 설정되는 것을 특징으로 하는 나노섬유 기반 복합 가연사.
- 제12항에 있어서,상기 가연사는 나노섬유 테이프사 단독의 우연사 내지는 좌연사, 상기 우연사와 좌연사를 복합연사하여 얻어진 2합사 중 어느 하나인 것을 특징으로 하는 나노섬유 기반 복합 가연사.
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- 2015-07-29 JP JP2018525325A patent/JP6661767B2/ja active Active
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CN107849753B (zh) | 2021-08-20 |
JP6661767B2 (ja) | 2020-03-11 |
KR20170014063A (ko) | 2017-02-08 |
US20180216258A1 (en) | 2018-08-02 |
JP2018523028A (ja) | 2018-08-16 |
KR101758204B1 (ko) | 2017-07-17 |
US10648105B2 (en) | 2020-05-12 |
CN107849753A (zh) | 2018-03-27 |
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