WO2005083163A1 - ポリウレタン弾性繊維及びその製造方法 - Google Patents
ポリウレタン弾性繊維及びその製造方法 Download PDFInfo
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- WO2005083163A1 WO2005083163A1 PCT/JP2005/003334 JP2005003334W WO2005083163A1 WO 2005083163 A1 WO2005083163 A1 WO 2005083163A1 JP 2005003334 W JP2005003334 W JP 2005003334W WO 2005083163 A1 WO2005083163 A1 WO 2005083163A1
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- polyurethane elastic
- elastic fiber
- polyurethane
- fiber
- inorganic compound
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Classifications
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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
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- 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
- D01D5/04—Dry spinning methods
-
- 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
- D01F6/70—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyurethanes
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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
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/10—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyurethanes
-
- 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
- D10B2401/00—Physical properties
- D10B2401/06—Load-responsive characteristics
- D10B2401/061—Load-responsive characteristics elastic
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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
- Y10T428/2927—Rod, strand, filament or fiber including structurally defined particulate matter
-
- 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
- Y10T428/2933—Coated or with bond, impregnation or core
Definitions
- the present invention relates to a polyurethane elastic fiber having excellent processing stability and a method for producing the same.
- Polyurethane elastic fibers are stretchable fibers having excellent elasticity, and are knitted and woven with polyamide fibers, polyester fibers, cotton, and the like, and are used in foundations, socks, pantyhose clothing, swimwear, sportswear, leotards, and the like. Widely used not only in the clothing field, but also in non-clothing fields such as ommuts, bandages, supporters, masks, automotive interior materials, nets, tapes, etc.
- polyurethane elastic fibers When used in the field of clothing, they are usually warped or covered and cross-knitted, and then become a fabric product via a dyeing step and a heat setting step.
- warping or canning a polyurethane elastic fiber friction occurs with the Prop guide and friction occurs between the guide and the knitting needle during cross knitting.
- the frictional resistance of the polyurethane elastic fiber is always constant, a high-quality fabric with less thread breakage and less unevenness can be manufactured.
- thread breakage occurs due to fluctuations in frictional resistance, and unevenness such as streaks frequently occurs in the fabric, which hinders processing stability.
- a fiber treatment agent such as an oil agent is generally applied to polyurethane elastic fibers. If a large amount of oil is applied, the effect of improving the caroe stability is seen to some extent, but it is not sufficient. Rather, the large amount of the oil agent attached causes a problem of severe pollution of the equipment, and is not economical.
- 58-44767 discloses a method of reducing the tackiness of polyurethane elastic fibers by adding a powdered metallic soap to a polyurethane solution in the process of producing polyurethane elastic fibers.
- metallic soap is dispersed in the polyurethane solution, it clogs filters and nozzles, causing a large pressure increase during the process, causing a problem in process stability.
- the inventors of the present invention have conducted intensive studies in order to solve the above-mentioned problems, and as a result, they have specific inorganic compound particles, have specific convex portions on the surface, and have specific friction characteristics.
- the present inventors have found that polyurethane elastic fibers have excellent processing stability, and have accomplished the present invention.
- the present invention is as follows.
- Inorganic compound particles having an average particle size of 0.5-5 / ⁇ and a refractive index of 1.4-1.6 are contained on the fiber surface per 120 m in the fiber axis direction.
- the polyurethane elastic fiber according to any one of the items 1 to 5, which is not more than 1.
- Inorganic compound particles having an average particle diameter of 0.5-5 ⁇ m and a refractive index of 1.4-1.6 are finely dispersed in an amide-based polar solvent,
- the polyurethane elastic fiber of the present invention has at least one relatively large convex portion having a maximum width of 0.5 to 5 m on the fiber surface per 120 m in the fiber axis direction. If the maximum width of the projections is less than 0.5 ⁇ m, the katenje stability is insufficient, and if it exceeds 5 ⁇ m, the projections become defects and the physical properties of the fiber become poor. The number of protrusions is required to be at least one on the fiber surface per 120 m length in the fiber axis direction, and if it is less than this, excellent processing stability cannot be obtained.
- projection refers to a protruding portion protruding higher than the average surface of the fiber surface. If the maximum width is 0.5 to 5 m, the convex portion may be used. The shape does not matter. It is preferable that the maximum height of the projection from the fiber surface is 0.05 to 2 m.
- the polyurethane elastic fiber of the present invention contains inorganic compound particles having an average particle diameter of 0.5 to 5 ⁇ m and a refractive index of 1.4 to 1.6.
- the fiber has the above-mentioned morphological characteristics on the surface of the fiber and excellent physical properties can be obtained.
- the average particle size is less than 0.5 ⁇ m, it is not possible to form a sufficiently large convex portion on the fiber surface, so that it is not possible to obtain excellent katenji stability. Also, if it exceeds 5 / zm In addition, the filter easily becomes clogged in the filter in the polyurethane elastic fiber production process, and the physical properties of the polyurethane elastic fiber become poor due to a defect of the inorganic compound particles, and thread breakage easily occurs during processing.
- the inorganic compound particles having an average particle diameter of 0.5 to 5 ⁇ m and a refractive index of 1.4 to 1.6 are added to the polyurethane elastic fiber by 0.05%. More preferably, it is contained in an amount of 0.1 to 10% by weight, more preferably 0.1 to 4% by weight.
- the content of the inorganic compound particles is in the above range, excellent processing stability is obtained, and also excellent spinning stability during production of polyurethane elastic fiber is obtained, and the physical properties of the fiber are also excellent. It becomes.
- the inorganic compound particles have at least one convex portion having a maximum width of 0.5 to 5 m on the fiber surface per 120 m in the fiber axis direction of the obtained polyurethane elastic fiber. And if it can meet the requirements.
- the inorganic compound particles include, for example, alumina, magnesium hydroxide, magnesium carbonate, calcium carbonate, calcium silicate, magnesium silicate, kaolin, myriki, silica and the like.
- non-crystalline synthetic silica is preferable, and porous synthetic silica having a specific surface area of preferably 100 to 800 m 2 Zg is more preferable.
- the physical properties of synthetic silica can be controlled by the production method.
- a typical production method is to mix sodium silicate and sulfuric acid to form a silicate sol, polymerize the sol to form primary particles, and further control the size of aggregates by reaction conditions.
- porous silica obtained by forming a three-dimensional aggregate from primary particles by reaction conditions under the former wet method and performing gelling is preferable.
- Porous silica can change its physical properties such as internal specific surface area and pore size by changing the primary particle generation conditions.
- those having a specific surface area of 100 to 800 m 2 Zg are preferred, more preferably 200 to 800 m 2 Zg.
- silica is as rigid as titanium.Since porous silica is structurally brittle, the use of porous silica makes it possible to use the silica during production and production of polyurethane elastic fibers. Needle wear can be greatly reduced.
- Silica white carbon having a small or no internal specific surface area obtained by a dry method under reaction conditions for stopping the growth of agglomerates even in a wet method under the condition of silica or a wet method is 0%. Because it is a very fine particle of 1 m or less, it may have a specific surface area similar to that of porous silica. These silicas tend to agglomerate in a solution or yarn, so they have a large filter clogging property, and the agglomerates are so dense that the guides and needles are greatly worn.
- the surface of porous silica obtained industrially by the above-mentioned method is usually covered with hydroxyl groups, and may be made hydrophobic by masking the surface hydroxyl groups by a hydrophilic surface treatment.
- Hydrophobization methods include, for example, a method in which an organosilicon compound such as trimethylsilane chloride bis (octadecyl) silane dichloride is reacted with a silanol group on a silica surface in a diligent manner, or an alkyl orthosilicate in a solvent.
- Hydrophilic porous silica is economically excellent, and hydrophobic porous silica has high affinity for organic solvents and has excellent dispersibility in a polyurethane solution, so the production process of polyurethane elastic fiber is stable. The performance is improved.
- the adsorption amount (DBA value) of di-n-butylamine adsorbed on the hydroxyl group is used.
- the DBA value is 0 to 300 meq / kg is preferable because of its excellent dispersibility.
- the polyurethane elastic fiber of the present invention preferably has a dynamic friction coefficient with respect to the knitting needles of 0.2 to 0.6. If the coefficient of kinetic friction with the knitting needle is within this range, the guide during processing ⁇ Because friction with Prov etc. is appropriate, the running stability of the yarn is excellent, the fluctuation of the insertion tension of the polyurethane elastic fiber into the fabric is suppressed, and the quality of the fabric is improved.
- the polyurethane elastic fiber of the present invention has a small change in tension due to a change in dynamic friction with the knitting needle.
- the change in the tension (T) on the input side which was subjected to frictional resistance due to the knitting needle during running for 20 minutes, was 1. OcN or less, the knitting needle, pr Tension fluctuation is suppressed, and the quality of the fabric is improved.
- the polyurethane elastic fiber of the present invention has a coefficient of static friction against the polyurethane elastic fiber of 0.
- the coefficient of static friction with respect to polyurethane elastic fibers is a value obtained by measuring the coefficient of static friction using polyurethane elastic fibers to be measured.
- the change with time of the static friction coefficient against nylon yarn is preferably 0.1 or less.
- the release condition of 70 ° C for 16 hours is a condition for accelerated evaluation assuming time-dependent changes at room temperature.Under these conditions, polyurethane elastic fibers having a time-dependent change in the static friction coefficient of 0.1 or less can be used. As a result, it is possible to maintain excellent processing stability for a long period of time due to a small change in friction characteristics.
- a polyurethane elastic fiber having a kinetic friction coefficient with respect to a knitting needle and a static friction coefficient with respect to a polyurethane elastic fiber which satisfies the above-mentioned specific requirements, and further has a good removability for a long period of time. I prefer that.
- the substrate polymer of the polyurethane elastic fiber of the present invention is obtained by, for example, reacting a polymer polyol, diisocyanate, a chain extender having a polyfunctional active hydrogen atom, and a terminal stopper having a monofunctional active hydrogen atom. Can be obtained.
- polymer polyol examples include various types of substantially linear homo- or copolymer-based polyols such as polyesterdiol, polyetherdiol, polyesteramidediol, polyacryldiol, and polythiol. Ester diol, polythioether diol, polycarbonate diol, or a mixture thereof, or a copolymer thereof, and the like.
- polyalkylene ether glycols for example, polyoxyethylene glycol, polyoxypropylene glycol, polytetramethylene ether glycol, polyoxypentamethylene glycol, tetramethylene group and 2,2-dimethylpropylene group.
- Copolymerized polyether glycols copolymerized polyether glycols also comprising tetramethylene groups and 3-methyltetramethylene groups, or mixtures thereof.
- polytetramethylene ether glycol and copolymerized polyether glycol having a tetramethylene group and a 2,2-dimethylpropylene group are preferred from the viewpoint of exhibiting excellent elasticity.
- the number-average molecular weight is more preferable than 500-5000 force, ⁇ 1000-3000.
- diisocyanate examples include aliphatic, alicyclic, and aromatic diisocyanates.
- Examples of the chain extender having a polyfunctional active hydrogen atom include hydrazine, polyhydrazine, ethylene glycolone, 1,2-propylene glycol, 1,3-propylene glycol, 1,3-butanediol, 1,4 Butanediol, 1,5-pentanediol, 1,6-hexanediol, 2,2 dimethyl-1,3 propanediol, diethylene glycol, dipropylene glycol, 1,4-cyclohexanedimethanol, phenylethanolamine Low molecular weight diols such as ethylenediamine, 1,2 propylenediamine, 1,3 propylenediamine, 2-methynoleic 1,5 pentanediamine, triethylenediamine, m-xylylenediamine, piperazine, o—, m— Or p-phenylenediamine, 1,3-diaminocyclohexane, 1,4-diamino
- Ethylenediamine alone which is more preferred than low-molecular diols, or at least one selected from the group consisting of 1,2-propylenediamine, 1,3-diaminocyclohexane, and 2-methyl-1,5-pentadiamine
- There 5 one 40 mole 0/0 Echirenjiamin mixture preferably contained, and as things. More preferably, ethylenediamine alone is used.
- Examples of the terminal terminator having a monofunctional active hydrogen atom include methanol, ethanol mono-ole, 2-propanol, 2-methinole 2-propanol, 1-butanol, 2-ethino 1-hexanol, Monoalcohols such as 3-methyl-1-butanol, monoalkylamines such as isopropylamine, n-butylamine, t-butylamine and 2-ethylhexylamine, getylamine, dimethylamine, di-n-butylamine, di-tert-butylamine, diisobutylamine, And dialkylamines such as di-2-ethylhexylamine and diisopropylamine. These can be used alone or as a mixture. Monofunctional amines such as monoalkylamines or dialkylamines are preferred over monoalcohols.
- a known technique of the polyurethane reaction can be used. For example, a polyalkylene ether daryl and diisocyanate are reacted under a diisocyanate excess condition to synthesize a urethane prepolymer having an isocyanate group at a terminal, and then the urethane prepolymer is converted into an active hydrogen-containing diamine such as a bifunctional amine. A chain extension reaction is performed on the ligated product to obtain a polyurethane polymer.
- a polyalkylene ether glycol having a number average molecular weight of 500 to 5000 is reacted with an excess equivalent of diisocyanate to synthesize a prepolymer having an isocyanate group at a terminal. Then, it is a polyurethane-rea polymer obtained by reacting a difunctional amine with a monofunctional amine in a prepolymer.
- an amide-based polar solvent such as dimethylformamide, dimethyl sulfoxide, dimethylacetamide, or the like is used.
- dimethylformamide dimethyl sulfoxide, dimethylacetamide, or the like is used.
- dimethylacetamide Preferably di Methylacetamide.
- inorganic compound particles to polyurethane elastic fibers
- it is common to add inorganic compound particles to a polyurethane solution in advance.
- it can be added during the urethane prepolymer reaction or the chain extension reaction.
- the inorganic compound particles are preferably added in a state of being uniformly dispersed in the polyurethane solution.
- coarse particles due to large secondary agglomeration are present in the polyurethane spinning solution, filter clogging and yarn breakage during spinning are likely to occur during production of polyurethane elastic fibers.
- a preferred method is to finely disperse the inorganic compound particles in an amide-based polar solvent and then add the resulting dispersion to a polyurethane polymer to obtain a polyurethane spinning stock solution.
- additives usually used for polyurethane fibers such as an ultraviolet absorber, an antioxidant, a light stabilizer, a gas-resistant colorant, Chlorine-resistant agents, coloring agents, matting agents, lubricants, fillers and the like may be added.
- the total amount of the inorganic additives should be 10 wt% or less in the polyurethane elastic fiber to prevent the spinning stability and physical properties of the inorganic compound particles from being reduced due to excessive addition of the inorganic compound particles. It is preferable to be.
- the polyurethane elastic fiber of the present invention is preferably produced by dry spinning an undiluted polyurethane spinning solution obtained by dissolving a polyurethane polymer in an amide-based polar solvent. Dry spinning can form the strongest physical crosslinks due to hydrogen bonding between hard segments, as compared to melt spinning or wet spinning.
- the polyurethane spinning dope preferably has a polymer concentration of 30 to 40 wt% and a viscosity of a spinning dope of 100 to 800 Pa's at 30 ° C. Within this range, the spinning solution preparation process and the spinning process are performed smoothly, and industrial production is easy. For example, if the viscosity of the spinning dope is too high, transport to the spinning step is difficult, and the spinning dope tends to gel during transport. If the viscosity of the spinning stock solution is too low, many yarn breaks occur during spinning, and the yield tends to decrease. If the concentration of the spinning dope is too low, the energy cost of scattering the solvent will be large, and if it is too high, the viscosity of the spinning dope will be too high, and the A shipping problem occurs.
- the oil agent to be imparted to the polyurethane elastic fiber obtained by spinning includes polydimethylsiloxane, polyester-modified silicone, polyether-modified silicone, amino-modified silicone, mineral oil, silicone resin, talc, colloidal alumina and the like.
- Mineral fine particles, higher fatty acid metal salt powders such as magnesium stearate and calcium stearate, and waxes that are solid at room temperature such as higher aliphatic carboxylic acids, higher aliphatic alcohols, paraffin, and polyethylene can be used. These may be used alone or in any combination as needed.
- any method may be used, such as adding the oil agent to the polyurethane fiber after spinning, or spinning the oil agent beforehand by incorporating the oil agent into the stock spinning solution.
- the oil agent is not particularly limited as long as it is a stage after the fiber is formed, but is preferably immediately before being wound by a winder. It is difficult to apply oil after winding the fiber because it is difficult to unwind the fiber because of the winding package strength.
- the method of applying the oil agent is a method in which the yarn immediately after spinning is brought into contact with an oil film formed on the surface of a metal cylinder rotating in an oil bath, and a method in which a fixed amount of the oil agent is discharged from the tip of a nozzle with a guide and the yarn
- a known method such as a method of attaching can be used.
- the polyurethane elastic fiber of the present invention includes natural fibers such as cotton, silk and wool, polyamide fibers such as nylon 6 and nylon 66, polyester fibers such as polyethylene terephthalate, polytrimethylene terephthalate and polytetramethylene terephthalate; Cross knitting with cationic dyeable polyester fiber, copper ammonia regenerated rayon, viscose rayon, acetate rayon, etc., or using these fibers to make a processed yarn by coating, entanglement, twisting, etc., and then cross knitting Thereby, a high-quality cloth without spots can be obtained.
- natural fibers such as cotton, silk and wool
- polyamide fibers such as nylon 6 and nylon 66
- polyester fibers such as polyethylene terephthalate, polytrimethylene terephthalate and polytetramethylene terephthalate
- Cross knitting with cationic dyeable polyester fiber copper ammonia regenerated rayon, viscose rayon, acetate rayon, etc., or using these fibers to make
- Polyurethane elastic fiber of the present invention is suitable for warp knitted fabrics in which the quality of the original yarn is greatly affected, since the production of the yarn using the polyurethane elastic fiber is particularly large because the yarn is supplied with bare yarn. Power nets, satin nets, Russell lace, two-way tricot However, by using the polyurethane elastic fiber of the present invention, it is possible to obtain a high-quality fabric having few longitudinal streaks.
- Fabrics using the polyurethane elastic fiber of the present invention include various stretch foundations such as swimwear, girdle, brassiere, intimate products, underwear, tights, pantyhose, waistband, body suits, snacks, stretch sportswear, It can be used for applications such as Stretchia Uta, medical wear and stretch lining.
- the polyurethane elastic fiber of the present invention is excellent in processing stability, and can produce a high-quality cloth with few yarn breaks during spinning and processing and with little unevenness. In addition, it is not necessary to increase the amount of the fiber treatment agent as in the prior art! Therefore, the equipment is less polluted and economical.
- FIG. 1 is a diagram schematically showing a method for measuring a coefficient of kinetic friction of a polyurethane elastic fiber against a knitting needle and a fluctuation in running yarn tension.
- FIG. 2 is a diagram schematically showing a method for measuring a static friction coefficient ( ⁇ ss) for polyurethane elastic fibers and a static friction coefficient (sn) for nylon yarn.
- FIG. 3 is an electron micrograph of the surface of the polyurethane elastic fiber of Example 1.
- the present invention will be further described with reference to Examples, but the present invention is not limited thereto.
- the measuring method, the evaluation method, etc. are as follows.
- the measurement sample is decompressed at 160 ° C for 2 hours to perform pretreatment for degassing of the sample, and the measurement is performed by the BET method.
- Solvents having different refractive indices were adjusted, and a certain amount of inorganic compound particles were added to each solvent. Measure the liquid permeability. Therefore, the refractive index of the solvent having the maximum transmittance is defined as the refractive index of the inorganic compound particles.
- the specific force of the yarn tension before and after the knitting needle of the yarn running through the knitting needle also determines the dynamic friction coefficient d). That is, when the yarn is traveled at a feeding speed of 100 mZ from the package and a winding speed of 200 mZ, the knitting needle (N) is moved along the yarn traveling route with a friction angle of 152 ° (see FIG. 1). Measure the thread tension (T) on the input side and the thread tension (T) on the output side when inserting at 0.84 ⁇ (rad)). Dynamic friction
- the number d) is calculated from the following equation (1).
- the yarn tension on the output side fluctuates due to unevenness in the friction characteristics of the yarn with respect to the knitting needle.
- the difference ( ⁇ ) between the maximum value and the minimum value of the yarn tension is obtained.
- Static friction coefficient for polyurethane elastic fiber The static friction coefficient (ss) with respect to the polyurethane elastic fiber was measured using a Joy Balance balance meter (manufactured by Koa Shokai Co., Ltd.) under the following conditions. The coefficient of static friction between two polyurethane elastic fibers obtained by the same method is measured.
- a load of 10 g (W) is applied to the polyurethane elastic fiber (S) to form a friction body.
- a polyurethane elastic fiber (S) was attached to the lower part of the panel (B).
- the static friction coefficient sn) for the nylon yarn is measured in the same manner as the measurement of the static friction coefficient for the polyurethane elastic fiber, except that the nylon yarn is used as the friction body.
- an untreated nylon yarn (Leona 10 Z7B, manufactured by Asahi Kasei Fibers Corp.) is stretched over (S), and a load of 20 g (W) is applied to the friction body.
- a 2g load (W) is applied to one end via a pulley with polyurethane elastic fiber) attached to the bottom of the panel (B).
- the polyurethane elastic fiber (S) is run at a speed of 30 cmZ. At this time, the panel (B)
- the change with time was measured by measuring the static friction coefficient of the polyurethane elastic fiber one week after the production and the static friction coefficient of the polyurethane elastic fiber after leaving it for 16 hours in an atmosphere of 70 ° C. Find the coefficient difference ( ⁇ sn).
- test yarn was run under tension at a feeding speed of 43 mZ and a winding speed of 150 mZ, and a stainless steel knitting needle fixed to the yarn on its running path (Koike Machinery Co., Ltd.) Made: 18Ga200-DX type) Hook and run for 12 hours.
- M The traces of the running traces are seen, but do not affect the strength of the knitting needles.
- B The knitting needle is broken during the measurement, or the running trace is cut to such an extent that the strength of the knitting needle is greatly reduced.
- DBA g-butylamine
- ⁇ ⁇ ⁇ ⁇ refractive index is 1.46, specific surface area of 500 meters 2 Zg, the porous silica LWT% of DBA value 800meqZkg Jimechiruaseta
- the mixture was dispersed with a homomixer to prepare a 15 wt% dispersion, mixed with a polyurethane solution to form a uniform solution, and then defoamed at room temperature under reduced pressure to obtain a spinning stock solution.
- This spinning stock solution was dry-spun at a spinning speed of 800mZ and a hot air temperature of 310 ° C, and before the obtained polyurethane elastic fiber was wound around the knockage, the finishing agent was added to the polyurethane elastic fiber at 6wt%. The resultant was applied and wound around a paper tube to obtain a winding package of polyurethane elastic fiber of 44 decitex / 4 filament.
- the finishing agent used was an oil agent composed of 57% by weight of polydimethylsiloxane, 30% by weight of mineral oil, 1.5% by weight of amino-modified silicone and 1.5% by weight of magnesium stearate.
- FIG. 3 shows a scanning electron micrograph of the polyurethane elastic fiber obtained in Example 1.
- a polyurethane elastic fiber was obtained in the same manner as in Example 1, except that the amount of the porous silica was changed to 0.2 wt%.
- a polyurethane elastic fiber was obtained in the same manner as in Example 1, except that the amount of the porous silica added was changed to 4. Owt%.
- Example 1 Attachment in Example 1, in place of the porous silica, average particle size 3. 9 / ⁇ ⁇ , refractive index 1.4 6, a specific surface area of 500 meters 2 Zg, the porous silica LWT% of DBA value 800meqZkg A polyurethane elastic fiber was obtained in the same manner as in Example 1 except that kneading was performed.
- Example 1 instead of the porous silica, the average particle size was 3 .: m, and the refractive index was 1.4.
- a polyurethane elastic fiber was obtained in the same manner as in Example 1 except that lwt% of porous silica having a specific surface area of 300 m 2 Zg and a DBA value of 500 meq Zkg was added.
- Example 1 instead of the porous silica, the average particle diameter was 2. ⁇ , and the refractive index was 1.4.
- a polyurethane elastic fiber was obtained in the same manner as in Example 1, except that 0.2 wt% of porous silica having a specific surface area of 230 m 2 Zg and a DBA value of 50 meq Zkg was added.
- Example 7 In Example 1, instead of porous silica, porous silica lwt% having an average particle size of 2. ⁇ , a refractive index of 1.47, a specific surface area of 420 m 2 / g, and a DBA value of 175 meq / kg was used. A polyurethane elastic fiber was obtained in the same manner as in Example 1 except that the mixture was added.
- Example 1 instead of polytetramethylene ether glycol having a number average molecular weight of 2000, a copolymerized polyether glycol (2,2) comprising a tetramethylene group having a number average molecular weight of 2000 and a 2,2-dimethylpropylene group as a high molecular weight polyol was used.
- a polyurethane elastic fiber was obtained in the same manner as in Example 1 except that a polyurethane polymer was obtained using 400 wt parts of a 2-dimethylpropylene group copolymerization ratio of 10 mol%).
- Polyurethane was prepared in the same manner as in Example 1 except that ⁇ % of synthetic magnesium silicate having an average particle size of 2.3 / ⁇ and a refractive index of 1.55 was added instead of the porous silica. An elastic fiber was obtained.
- Polyurethane elastic fiber was prepared in the same manner as in Example 1 except that porous silica was added instead of porous silica, and a my force having an average particle diameter of 4.5 / ⁇ and a refractive index of 1.49 was added by ⁇ %. Was obtained.
- a polyurethane elastic fiber was obtained in the same manner as in Example 1, except that the amount of the porous silica was changed to 12% by weight.
- Example 1 except that porous silica was used instead of wet silica, which had an average particle size of 2.8 / ⁇ , a refractive index of 1.46, and a specific surface area of 150 m 2 Zg, instead of porous silica.
- porous silica was used instead of wet silica, which had an average particle size of 2.8 / ⁇ , a refractive index of 1.46, and a specific surface area of 150 m 2 Zg, instead of porous silica.
- polyurethane elastic fibers were obtained.
- Example 1 in place of porous silica, dry silica lw having an average particle size of 1.9 m (16 nm as measured by an electron microscope), a refractive index of 1.46, and a specific surface area of 170 m 2 Zg was used. Except for adding t%, a polyurethane elastic fiber was obtained in the same manner as in Example 1. [0093] [Comparative Example 1]
- a polyurethane elastic fiber was obtained in the same manner as in Example 1 except that porous silica was not added.
- Example 1 lwt% of porous silica having an average particle size of 6.2 / ⁇ , a refractive index of 1.46, a specific surface area of 300 m 2 Zg, and a DBA value of 500 meq Zkg was added in place of the porous silica.
- the mixture was dried to obtain a spinning dope in the same manner as in Example 1.
- the obtained spinning dope was subjected to dry spinning in the same manner as in Example 1. However, since thread breakage occurred frequently and the pressure loss of the filter became large, polyurethane elastic fibers could not be obtained.
- Table 1 shows the compositions in the above Examples and Comparative Examples, and Table 2 shows the physical properties of the obtained polyurethane-based fibers.
- the polyurethane elastic fiber of the present invention is excellent in processing stability, it is possible to produce a high-quality cloth with less thread breakage, less unevenness, and the like.
- Fabrics using the polyurethane elastic fiber of the present invention include various stretch foundations such as swimwear, girdle, brassiere, intimate products, underwear, tights, and panties king. It is suitable for applications such as waistbands, body suits, snacks, stretch sportswear, and stretches.
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Abstract
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Priority Applications (5)
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EP05719651A EP1722015B1 (en) | 2004-03-02 | 2005-02-28 | Polyurethane elastic fiber and method for production thereof |
US10/591,671 US7485364B2 (en) | 2004-03-02 | 2005-02-28 | Polyurethane elastic fiber and process for producing same |
JP2006510507A JP4585512B2 (ja) | 2004-03-02 | 2005-02-28 | ポリウレタン弾性繊維及びその製造方法 |
DE602005020589T DE602005020589D1 (de) | 2004-03-02 | 2005-02-28 | Polyurethanelastofaser und verfahren zu deren herstellung |
AT05719651T ATE464409T1 (de) | 2004-03-02 | 2005-02-28 | Polyurethanelastofaser und verfahren zu deren herstellung |
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JP2004057415 | 2004-03-02 | ||
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PCT/JP2005/003334 WO2005083163A1 (ja) | 2004-03-02 | 2005-02-28 | ポリウレタン弾性繊維及びその製造方法 |
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US (1) | US7485364B2 (ja) |
EP (1) | EP1722015B1 (ja) |
JP (1) | JP4585512B2 (ja) |
KR (1) | KR100831183B1 (ja) |
CN (1) | CN100447318C (ja) |
AT (1) | ATE464409T1 (ja) |
DE (1) | DE602005020589D1 (ja) |
ES (1) | ES2341871T3 (ja) |
TW (1) | TWI294002B (ja) |
WO (1) | WO2005083163A1 (ja) |
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JP2018535331A (ja) * | 2015-10-08 | 2018-11-29 | ユニバーシティ オブ リーズ | 複合体繊維 |
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KR100831183B1 (ko) | 2008-05-21 |
US20070196650A1 (en) | 2007-08-23 |
US7485364B2 (en) | 2009-02-03 |
TWI294002B (en) | 2008-03-01 |
CN100447318C (zh) | 2008-12-31 |
EP1722015B1 (en) | 2010-04-14 |
KR20060116241A (ko) | 2006-11-14 |
JPWO2005083163A1 (ja) | 2007-11-22 |
JP4585512B2 (ja) | 2010-11-24 |
DE602005020589D1 (de) | 2010-05-27 |
ATE464409T1 (de) | 2010-04-15 |
EP1722015A4 (en) | 2007-12-12 |
ES2341871T3 (es) | 2010-06-29 |
CN1926268A (zh) | 2007-03-07 |
TW200602524A (en) | 2006-01-16 |
EP1722015A1 (en) | 2006-11-15 |
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