CN116490649A - Sea-island composite polyester fiber - Google Patents
Sea-island composite polyester fiber Download PDFInfo
- Publication number
- CN116490649A CN116490649A CN202180077364.8A CN202180077364A CN116490649A CN 116490649 A CN116490649 A CN 116490649A CN 202180077364 A CN202180077364 A CN 202180077364A CN 116490649 A CN116490649 A CN 116490649A
- Authority
- CN
- China
- Prior art keywords
- island
- sea
- orientation
- polyester fiber
- composite polyester
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000835 fiber Substances 0.000 title claims abstract description 137
- 239000002131 composite material Substances 0.000 title claims abstract description 91
- 229920000728 polyester Polymers 0.000 title claims abstract description 83
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 claims description 50
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- 239000003513 alkali Substances 0.000 claims description 12
- 229920001515 polyalkylene glycol Polymers 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 229920001634 Copolyester Polymers 0.000 claims description 5
- 125000001273 sulfonato group Chemical group [O-]S(*)(=O)=O 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 239000002994 raw material Substances 0.000 abstract description 2
- 229920000642 polymer Polymers 0.000 description 74
- 229920000139 polyethylene terephthalate Polymers 0.000 description 39
- 239000005020 polyethylene terephthalate Substances 0.000 description 39
- 239000002759 woven fabric Substances 0.000 description 37
- 238000011156 evaluation Methods 0.000 description 33
- 239000004744 fabric Substances 0.000 description 31
- -1 aliphatic dicarboxylic acids Chemical class 0.000 description 26
- 238000000034 method Methods 0.000 description 25
- 230000000052 comparative effect Effects 0.000 description 20
- 239000002202 Polyethylene glycol Substances 0.000 description 13
- 229920001223 polyethylene glycol Polymers 0.000 description 13
- 238000001816 cooling Methods 0.000 description 12
- 229910052708 sodium Inorganic materials 0.000 description 12
- 239000011734 sodium Substances 0.000 description 12
- 238000009987 spinning Methods 0.000 description 12
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 12
- 238000004043 dyeing Methods 0.000 description 11
- 238000001069 Raman spectroscopy Methods 0.000 description 9
- 238000004090 dissolution Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 9
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
- 229920001410 Microfiber Polymers 0.000 description 7
- 239000002253 acid Substances 0.000 description 7
- 230000010287 polarization Effects 0.000 description 7
- ISPYQTSUDJAMAB-UHFFFAOYSA-N 2-chlorophenol Chemical compound OC1=CC=CC=C1Cl ISPYQTSUDJAMAB-UHFFFAOYSA-N 0.000 description 5
- 230000004927 fusion Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 235000011121 sodium hydroxide Nutrition 0.000 description 5
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 4
- WPSWDCBWMRJJED-UHFFFAOYSA-N 4-[2-(4-hydroxyphenyl)propan-2-yl]phenol;oxirane Chemical class C1CO1.C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 WPSWDCBWMRJJED-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- 239000003658 microfiber Substances 0.000 description 3
- 229920002799 BoPET Polymers 0.000 description 2
- 102100037681 Protein FEV Human genes 0.000 description 2
- 101710198166 Protein FEV Proteins 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000001361 adipic acid Substances 0.000 description 2
- 235000011037 adipic acid Nutrition 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 description 2
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 2
- 150000002009 diols Chemical class 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 239000006224 matting agent Substances 0.000 description 2
- 238000002074 melt spinning Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- WLJVNTCWHIRURA-UHFFFAOYSA-N pimelic acid Chemical compound OC(=O)CCCCCC(O)=O WLJVNTCWHIRURA-UHFFFAOYSA-N 0.000 description 2
- 229920002215 polytrimethylene terephthalate Polymers 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- TYFQFVWCELRYAO-UHFFFAOYSA-N suberic acid Chemical compound OC(=O)CCCCCCC(O)=O TYFQFVWCELRYAO-UHFFFAOYSA-N 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000009941 weaving Methods 0.000 description 2
- DNIAPMSPPWPWGF-VKHMYHEASA-N (+)-propylene glycol Chemical compound C[C@H](O)CO DNIAPMSPPWPWGF-VKHMYHEASA-N 0.000 description 1
- YPFDHNVEDLHUCE-UHFFFAOYSA-N 1,3-propanediol Substances OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 description 1
- 229940035437 1,3-propanediol Drugs 0.000 description 1
- RTBFRGCFXZNCOE-UHFFFAOYSA-N 1-methylsulfonylpiperidin-4-one Chemical compound CS(=O)(=O)N1CCC(=O)CC1 RTBFRGCFXZNCOE-UHFFFAOYSA-N 0.000 description 1
- QFGCFKJIPBRJGM-UHFFFAOYSA-N 12-[(2-methylpropan-2-yl)oxy]-12-oxododecanoic acid Chemical compound CC(C)(C)OC(=O)CCCCCCCCCCC(O)=O QFGCFKJIPBRJGM-UHFFFAOYSA-N 0.000 description 1
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 229930185605 Bisphenol Natural products 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 238000001237 Raman spectrum Methods 0.000 description 1
- ORLQHILJRHBSAY-UHFFFAOYSA-N [1-(hydroxymethyl)cyclohexyl]methanol Chemical compound OCC1(CO)CCCCC1 ORLQHILJRHBSAY-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- JFCQEDHGNNZCLN-UHFFFAOYSA-N anhydrous glutaric acid Natural products OC(=O)CCCC(O)=O JFCQEDHGNNZCLN-UHFFFAOYSA-N 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 1
- CDQSJQSWAWPGKG-UHFFFAOYSA-N butane-1,1-diol Chemical compound CCCC(O)O CDQSJQSWAWPGKG-UHFFFAOYSA-N 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- QYQADNCHXSEGJT-UHFFFAOYSA-N cyclohexane-1,1-dicarboxylate;hydron Chemical compound OC(=O)C1(C(O)=O)CCCCC1 QYQADNCHXSEGJT-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 150000001991 dicarboxylic acids Chemical class 0.000 description 1
- 239000000539 dimer Substances 0.000 description 1
- 239000000986 disperse dye Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 150000002334 glycols Chemical class 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000877 morphologic effect Effects 0.000 description 1
- RXOHFPCZGPKIRD-UHFFFAOYSA-N naphthalene-2,6-dicarboxylic acid Chemical compound C1=C(C(O)=O)C=CC2=CC(C(=O)O)=CC=C21 RXOHFPCZGPKIRD-UHFFFAOYSA-N 0.000 description 1
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920000747 poly(lactic acid) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000004626 polylactic acid Substances 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 229920000166 polytrimethylene carbonate Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- QOOLLUNRNXQIQF-UHFFFAOYSA-N sodium;5-sulfobenzene-1,3-dicarboxylic acid Chemical compound [Na].OC(=O)C1=CC(C(O)=O)=CC(S(O)(=O)=O)=C1 QOOLLUNRNXQIQF-UHFFFAOYSA-N 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Multicomponent Fibers (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
The invention provides a sea-island composite polyester fiber having at least 2 kinds of island parts with different orientations, which can obtain suede-like raw materials with excellent fuzzing uniformity and fuzzing thickness. The sea-island composite polyester fiber of the present invention comprises: the island structure has a sea portion and 2 or more different island portions, the island portion has an outer diameter of 1.0 to 7.0 [ mu ] m, a ratio of an orientation parameter of a maximum orientation component to an orientation parameter of a minimum orientation component (maximum orientation parameter/minimum orientation parameter) of the island portion is 1.03 to 1.15, and the orientation parameter of the maximum orientation component is 4.0 to 8.5.
Description
Technical Field
The present invention relates to a multi-island sea-island composite fiber made of polymers of 3 or more components.
Background
Fibers using thermoplastic polymers such as polyesters and polyamides are widely used not only for clothing but also for interior trim, vehicle interior, industrial applications, etc., because of their excellent mechanical properties and dimensional stability. At present, fibers have various applications, and various properties have been required, and techniques have been proposed for imparting a feeling effect such as a touch and bulkiness to the fibers according to the cross-sectional shape of the fibers. Among them, "fiber miniaturization" is a mainstream technique from the viewpoints of great effects on the characteristics of the fiber itself, the characteristics after fabric production, and the control of the cross-sectional morphology of the fiber.
In the case of spinning a polymer alone, the fiber is extremely fine, and even if the spinning conditions are highly controlled, the diameter of the obtained fiber is limited to about several μm, and therefore, in general, a "sea-island type composite spinning method" is often employed in which a composite fiber is obtained by a composite nozzle. In the composite spinning method, a plurality of island polymers composed of insoluble components are arranged in a sea polymer composed of soluble components in a fiber section to produce a fiber or a fiber product, and then the sea polymer is removed to produce a very fine fiber composed of the island polymer. Since this composite spinning method can uniformly and homogeneously form a high-precision yarn cross-sectional shape in the yarn moving direction, it is now widely used for extremely fine fibers produced in the manufacturing industry.
Fibers having a limited fineness are widely used as suede-like fabrics and wipes for clothing applications because they can exhibit soft touch and fine texture that are not obtainable by general fibers.
As a method for easily producing ultrafine fibers, it is known to use sea-island type composite fibers having island portions of low solubility in sea portions made of a low solubility polymer, or cut type composite fibers having the low solubility ultrafine fibers separated by the low solubility polymer (for example, refer to patent documents 1 and 2). In these techniques, after the composite fiber is once produced and wound, the composite fiber or the fabric product is immersed in a dissolving agent to remove the easily soluble polymer, thereby obtaining an extremely fine fiber having a low solubility.
In recent years, there has been proposed a sea-island type multicomponent composite fiber in which island portions are made of 2 or more polymers having a difference in shrinkage, which is an ultrafine fiber but has excellent fiber properties and good silk-making properties, and which has a bulkiness, softness, and soft touch when made into a fabric (for example, refer to patent document 3).
Prior art literature
Patent literature
Patent document 1: japanese patent laid-open No. 2005-163234
Patent document 2: japanese patent publication No. 48-28005
Patent document 3: japanese patent laid-open No. 2015-183343
Disclosure of Invention
Problems to be solved by the invention
However, when the conjugate fibers described in patent documents 1 and 2 are used, although the conjugate fibers have soft touch which is unique to ultrafine fibers, the bulkiness and the fiber opening property of the filaments are low, and when the suede-like woven fabric is produced, there are problems that the fuzzing uniformity and the fuzzing thickness are low. Further, the conjugate fiber described in patent document 3 is also low in bulk and fiber opening properties because the difference in shrinkage between the island components is small, and when a suede-like fabric is produced, a substance having satisfactory fuzzing uniformity and fuzzing thickness cannot be obtained.
The present invention solves the above problems and aims to provide a very fine fiber having high fiber opening properties and excellent bulk properties.
Means for solving the problems
As a result of intensive studies to solve the above problems, the present inventors have found that a suede-like material excellent in opening properties and bulk can be provided by sea-island composite fibers exhibiting poor shrinkage due to island portions having different orientations. Namely, the present invention adopts the following constitution.
< 1 > an island-in-sea composite polyester fiber having an island structure comprising a sea portion and 2 or more different island portions, wherein the island portion has an outer diameter of 1.0 to 7.0 μm, wherein the ratio of the orientation parameter of the largest orientation component to the orientation parameter of the smallest orientation component (largest orientation parameter/smallest orientation parameter) of the island portion is 1.03 to 1.15, and wherein the orientation parameter of the largest orientation component is 4.0 to 8.5.
< 2 > the island-in-sea composite polyester fiber according to the above < 1 >, wherein the island portion of the island-in-sea composite polyester fiber represented by the following formula (1) has a difference in filament length of 15 to 40% after alkali treatment and dry heat treatment under the following conditions.
Alkali treatment conditions: sodium hydroxide aqueous solution (concentration 1 g/L), 92 ℃, 30 minutes, no load dry heat treatment conditions: 190 ℃ for 1 min without load
Silk length difference (%) = (L2-L1)/l1x100· (1)
(in the formula (1), L1 is the length of the shortest island portion, and L2 is the length of the longest island portion.)
< 3 > the sea-island composite polyester fiber according to the above < 1 > or < 2 >, wherein the sea portion comprises a copolyester obtained by copolymerizing isophthalic acid having a metal sulfonate group or a derivative thereof with a polyalkylene glycol.
ADVANTAGEOUS EFFECTS OF INVENTION
The sea-island composite polyester fiber of the present invention is a multi-island sea-island composite fiber having 2 or more island portions having different orientations. The sea-island composite polyester fiber of the present invention is a very fine fiber excellent in fiber opening properties and bulk properties because island parts exhibit poor shrinkage by dissolution and removal treatment of sea polymers. Thus, the sea-island composite polyester fiber of the present invention can provide a suede-like raw material having excellent fuzzing uniformity and fuzzing thickness and good touch.
Drawings
Fig. 1 is a schematic diagram showing an island configuration of a cross section of a composite fiber according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail below.
In the present specification, the numerical ranges indicated by "to" are used in a meaning including the numerical values before and after the numerical values as a lower limit value and an upper limit value.
The sea-island composite polyester fiber of the present invention is a sea-island composite fiber having a sea-island structure including sea portions and island portions.
The polymer constituting the sea-island composite polyester fiber of the present invention contains at least 3 components, of which 1 component is a readily soluble polymer constituting the sea portion. The islands are made of at least 2 poorly soluble polymers differing in orientation parameters, having a difference in filament length after the sea-free (sea polymer removal) based on alkali treatment and dry heat treatment. Thus, the obtained fiber is extremely fine fiber excellent in fiber opening property and bulk.
It is preferable to use a polyester polymer in the island part constituting the sea-island composite polyester fiber of the present invention. Examples of the polyester-based polymer include a polyester obtained by copolymerizing an acid component and a glycol component, and polylactic acid.
Examples of the acid component include aliphatic dicarboxylic acids such as succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, sebacic acid, dodecanedioic acid, and aromatic dicarboxylic acids such as terephthalic acid, isophthalic acid, and 2, 6-naphthalene dicarboxylic acid. Examples of the diol component include alkylene diols having 2 to 10 carbon atoms such as ethylene glycol, 1, 3-propanediol, and 1, 4-butanediol.
The polyester is particularly preferably polyethylene terephthalate, polypropylene terephthalate or polybutylene terephthalate.
These polyesters may contain a part of the diol component and the acid component in a proportion of 20mol% or less, more preferably 10mol% or less, respectively, of other copolymerizable components capable of forming ester bonds. Examples of the copolymerizable compound include dicarboxylic acids such as isophthalic acid, succinic acid, cyclohexanedicarboxylic acid, adipic acid, dimer acid, sebacic acid, and isophthalic acid 5-sodium sulfonate, glycols such as ethylene glycol, diethylene glycol, butanediol, neopentyl glycol, cyclohexanedimethanol, polyethylene glycol, and polypropylene glycol.
The polyester polymer may contain additives such as a matting agent, a flame retardant, an antistatic agent, and a pigment.
In the island part of the sea-island composite polyester fiber of the present invention, at least 2 polymers having different orientation parameters are used. By mixing the composite fiber with island portions of a high-orientation (high-shrinkage) component and a low-orientation (low-shrinkage) component, the island portions are opened by the sea-free treatment, and a differential shrinkage mixed filament of microfibers can be obtained.
In the present invention, the orientation parameter is an index of the molecular orientation of the polymer, and a larger value indicates a higher molecular orientation. The orientation parameters of the islands were determined as follows: in the Raman spectrum obtained by laser Raman spectroscopy, the spectrum is obtained at 1615cm -1 The intensity of polarization direction orthogonal to fiber axis of the stretching raman band of carbon-carbon double bond (c=c) derived from polyester polymer confirmed in the vicinity was 1730cm -1 Band intensity ratio is calculated from band intensities of polarization orientations orthogonal to fiber axes of stretching raman bands derived from carbon-oxygen double bonds (c=o) of the polyester polymer confirmed in the vicinity, and the band intensity ratio is converted into orientation parameters shown by the following formula using analysis results of band intensity ratios of polarization orientations orthogonal to fiber axes of c=c stretching and c=o stretching of the uniaxially stretched film of the polyester polymer as calibration data.
Band intensity ratio = I 1615 vertical/I 1730 Vertical direction
Orientation parameter = -4.3143 x band intensity ratio +12.711 (approximate expression in linear correlation was obtained using the analysis result of uniaxially stretched film of polyester polymer as calibration data)
The term "high orientation" and "low orientation" refer to a state in which the island is relatively higher or lower than the other island among 2 or more island types.
As the polymer used in the low shrinkage portion, a homopolyester polymer is suitable. On the other hand, the polymer used in the high shrinkage portion is preferably a copolyester such as isophthalic acid.
In the sea-island composite polyester fiber of the present invention, the island portion has an outer diameter of 1.0 to 7.0. Mu.m. By setting the outer diameter of the island portion to 1.0 μm or more, diffuse reflection on the fiber surface can be suppressed, and light dyeing in the fabric can be suppressed. Further, the fabric has high bending rigidity, and is bulked and has excellent rebound feeling. On the other hand, by setting the outer diameter of the island portion to 6.1 μm or less, a fine skin feel and softness can be obtained. The upper limit of the outer diameter of the island is preferably 6.5 μm or less, more preferably 6.3 μm or less, 6.1 μm or less, 5.0 μm or less, and 4.5 μm or less, and the lower limit is preferably 1.5 μm or more, and still more preferably 2.0 μm or more.
The sea-island composite polyester fiber of the present invention has a ratio of the orientation parameter of the largest orientation component to the orientation parameter of the smallest orientation component (the largest orientation parameter/the smallest orientation parameter, hereinafter also referred to as "orientation parameter ratio") of 1.03 to 1.15, and the orientation parameter of the largest orientation component of 4.0 to 8.5. As described above, the orientation parameter indicates the orientation of the molecular chain of each island, and the difference in orientation between islands is large, and the difference in shrinkage between islands, which makes the progress of orientation of the high shrinkage portion different, is large. The difference in shrinkage between the islands increases, and thus voids appear after the sea-free, which can improve the fiber opening/bulk properties. In order to set the orientation parameter ratio to such a range, it is necessary to control the orientation between islands by spinning under specific conditions (intrinsic viscosity ratio of islands, composition of sea polymer, etc.) as described later. The orientation parameter ratio is more preferably 1.05 to 1.12. The orientation parameter of the maximum orientation component is preferably 4.0 to 8.0, more preferably 4.5 to 8.0, still more preferably 5.0 to 7.5, and particularly preferably 6.0 to 7.0.
From the viewpoints of uniform fiber opening and bulk, the arrangement of the islands of the sea-island composite polyester fiber of the present invention is preferably dispersed in the sea as shown in fig. 1. In fig. 1, 2 kinds of island portions (1 st island portion 1 and 2 nd island portion 2) are shown as an example.
The island-in-sea composite polyester fiber of the present invention preferably has a difference in filament length between 15 and 40% in island portions after the sea-free treatment by alkali treatment and dry heat treatment under the following conditions.
Alkali treatment conditions: sodium hydroxide aqueous solution (concentration 1 g/L), 92 ℃ for 30 minutes, dry heat treatment conditions without load: 190 ℃ for 1 min without load
If the difference in filament length between islands after the sea-free treatment is 15% or more, the filaments tend to be pulled out in the napping step of the fabric, and thus the nap becomes longer, the bulkiness is improved, and the napping thickness of the fabric becomes good. If the difference in filament length is 40% or less, the reduction in hand (rough feeling) due to shrinkage of the whole fabric can be suppressed, and a fabric of good quality can be obtained. The difference in filament length of the island after the sea-free treatment is more preferably 20 to 35%.
The difference in filament length between the islands in the fiber after alkali treatment and dry heat treatment was calculated by the following formula (1), where L1 is the length of the shortest island and L2 is the length of the longest island. When measuring the length of the yarn, a load of 0.1g/dtex was applied to the yarn for measurement.
Silk length difference (%) = (L2-L1)/l1x100· (1)
In view of the wide industrial practice of alkali dissolution using caustic soda as a dissolving agent, the sea portion constituting the sea-island composite polyester fiber of the present invention preferably contains polyester as a main component. It is further preferred that a copolyester of isophthalic acid or its derivative having a metal sulfonate group and polyalkylene glycol is suitable, and particularly preferred is a combination of sodium 5-sulfoisophthalic acid and polyethylene glycol.
The content of isophthalic acid having a metal sulfonate group is preferably 5.0 to 15.0mol%. If the isophthalic acid content is 5.0mol% or more, the dissolution of the sea portion during the sea-off treatment is improved, and fusion between filaments due to non-dissolution of sea components is suppressed. In addition, if the isophthalic acid content is 15mol% or less, softening of the polymer is suppressed, and the process passage at the time of weaving/knitting becomes good.
The number average molecular weight of the polyalkylene glycol is preferably 500 to 2000. When the number average molecular weight is 500 or more, the dissolution property of the sea portion at the time of the sea-free treatment is improved, and fusion between filaments due to non-dissolution of sea components is suppressed. Further, since the molecular mobility of the sea component is improved during melt spinning, the island orientation is easy to proceed, the island orientation parameter is a proper value, and the filament length difference is exhibited and the opening property and bulk are excellent, so that it is preferable. The polyalkylene glycol has a number average molecular weight of 2000 or less, and thus has excellent compatibility with polyester and excellent filament-forming property.
The content of the polyalkylene glycol in the polyester polymer is preferably 5.0 to 15.0% by weight. When the content of the polyalkylene glycol is 5.0% by weight or more, the dissolution property of the sea portion at the time of sea-free is improved, and fusion between filaments due to non-dissolution of sea components is suppressed. Further, since the molecular mobility of the sea component is improved during melt spinning, the island orientation is easy to proceed, the island orientation parameter is a proper value, and the filament length difference is exhibited and the opening property and bulk are excellent, so that it is preferable. Even if the content of the polyalkylene glycol is more than 15.0 wt%, the effect of improving the sea elution property is limited.
In the case of blending polyester as the sea portion, the sea portion polymer preferably has an intrinsic viscosity (hereinafter, referred to as iv.) of 0.50 to 0.75. If IV is 0.50 or more, stress on sea parts is increased during spinning, and concentration of stress on island parts is suppressed, so that the orientation parameters of the island parts are set to appropriate values, and shrinkage of the yarn can be suppressed, thereby producing a fabric with good quality. On the other hand, if the IV of the sea polymer is 0.75 or less, concentration of stress on sea is suppressed at the time of spinning, and stress on island is increased, so that the orientation parameter of each island becomes an appropriate value, and the filament length difference is expressed to be a filament excellent in the opening property and bulk, which is preferable. More preferably, the sea polymer has an IV of 0.55 to 0.70.
The copolymerization components other than the above may be copolymerized at 10mol% or less for each of the sea polymer and the island polymer within a range not to impair the object of the present invention. Further, if necessary, inorganic fine particles such as titanium dioxide may be added as a matting agent, and silica fine particles or the like may be added as a lubricant.
The island portion of the sea-island composite polyester fiber of the present invention is not particularly limited in cross-sectional shape, and may be, for example, a circular cross-section, a flat cross-section, a lens-shaped cross-section, or other known irregular cross-sections.
The island number in the sea-island composite polyester fiber of the present invention is preferably 12 to 432 islands per monofilament. If the number of islands per filament is 12 or more, the islands can be arranged in the sea without gaps, and thus the morphological stability of the composite fiber is improved, which is preferable. Further, by setting the number of islands to be equal to or less than that of the individual filaments 432, the island fusion defect can be avoided. Further, when the sea portion is dissolved and removed, the difference in contact time between the island portion in the surface layer and the island portion in the inner layer of the composite fiber with the dissolving agent becomes small, and the fiber diameter variation of the fiber obtained from the island portion becomes small, whereby a high-strength microfiber can be obtained. A further preferred range of island numbers in the composite fiber is from 32 to 192 islands per monofilament.
In the sea-island composite polyester fiber of the present invention, the sea portion is preferably 10 to 30% by weight. By containing 10 wt% or more of the sea portion, fusion of island portions can be prevented, and the efficiency of the sea-free treatment is excellent, so that a high-strength and high-quality fabric can be obtained. Further, if the sea portion content is 30 wt% or less, the dissolution and removal time of the sea portion can be shortened, and the amount of polymer to be dissolved becomes small, so that the productivity of microfibers can be improved, which is preferable. The sea portion weight ratio in the sea-island composite polyester fiber is more preferably in the range of 15 to 25%.
An example of the method for producing the sea-island composite polyester fiber of the present invention will be specifically described below.
The method for producing an island-in-sea composite polyester fiber of the present invention can be produced by either a 2-step method in which the discharged polymer is once wound as an unstretched yarn and then stretched to a predetermined elongation at break by a normal stretching machine, or a 1-step method in which stretching is continued without being temporarily wound. However, if quality stability and production stability in the fiber length direction are considered, the production by the direct spin-draw method is most excellent.
The conventional composite spinning nozzle can be used as the nozzle used for producing the fiber, but the composite nozzle in which 3 kinds of members, i.e., a metering plate, a distribution plate, and a discharge plate, are laminated as described in japanese unexamined patent publication No. 2011-174215 is preferably used, so that an island composite fiber can be stably obtained.
In order to control the orientation parameters of the island portion within such a range, it is preferable to control the intrinsic viscosity ratio of the island portion polymer and the conditions of cooling and solidification in addition to the above-mentioned sea portion polymer selection.
The intrinsic viscosity ratio of the polyester sheet material in the island parts is preferably 1.2 to 1.6 as a value obtained by dividing the intrinsic viscosity of the high-viscosity component by the intrinsic viscosity of the low-viscosity component. If the intrinsic viscosity ratio is 1.2 or more, the difference in spinning stress received by the different islands makes the orientation parameter ratio proper, and the filament length difference is exhibited, so that a filament excellent in the opening property and bulk is obtained. On the other hand, if the intrinsic viscosity ratio is 1.6 or less, stress concentration on the high-viscosity component is suppressed at the time of spinning, and the orientation parameter becomes an appropriate value, so that the shrinkage of the yarn is suppressed from becoming large, and a fabric of good quality can be obtained.
In the production of the fiber, in order to control the cooling and solidification of the discharged polymer, the orientation parameter ratio of the different islands is set to an appropriate value, and the distance from the nozzle discharge surface to the cooling surface (cooling start distance) is preferably set to 250 to 450mm. The orientation of the island is easily affected by the difference in viscosity at the time of melting, and if the cooling start distance is 250mm or more, the melting time can be ensured, and the difference in orientation between the island polymers tends to occur, so that the orientation parameter ratio becomes an appropriate range. If the cooling start distance is long, the orientation parameter ratio becomes large, but if the cooling start distance is 450mm or less, U% indicating unevenness in the longitudinal direction becomes a good value.
By using the above-mentioned sea polymer polyalkylene glycol content, number average molecular weight, sea polymer intrinsic viscosity, island polymer intrinsic viscosity ratio, and cooling start distance, sea-island composite polyester fibers can be obtained which can have appropriate island orientation parameters, filament length difference expression due to difference in heat shrinkage, and which can improve the opening properties, bulkiness, and can obtain fuzzing uniformity and fuzzing thickness which cannot be achieved by conventional filaments at any rate when producing fabrics.
The sea-island composite polyester fiber of the present invention obtained in the above-described manner is preferably used for a fabric or a clothing, and the form of the fabric may be selected according to the purpose of woven fabric, knitted fabric, nonwoven fabric, or the like, and also includes clothing. The material having a high-quality feel such as suede is obtained by napping a fabric after it is produced, and the material can be suitably used for shirts, blouse, shorts, western-style clothes, shirts, shoes, bags, base cloth materials, and the like, depending on the purpose.
Examples
The present invention will be described in further detail with reference to examples.
A. Intrinsic Viscosity (IV)
The intrinsic viscosity of the polymer was calculated from the following formula (2).
The relative viscosity ηr in the formula (2) was determined by the following formula (3) using an ostwald viscometer at 25℃by dissolving 0.8g of a sample polymer in 10mL of O-chlorophenol (OCP) having a purity of 98% or more.
Intrinsic Viscosity (IV) =0.0242 ηr+0.2634 · (2)
ηr＝η/η0＝(t×d)/(t0×d0)···(3)
[ in formula (3), η is the viscosity of the polymer solution, η0 is the viscosity of the OCP, t is the falling time (seconds) of the solution, d is the density (g/cm) 3 ) T0 is the falling time (seconds) of OCP, d0 is the density (g/cm) of OCP 3 )。]
B. Orientation parameters of islands
The fiber sample was measured by laser Raman spectroscopy at 1615cm -1 The intensity of polarization direction perpendicular to the fiber axis of the stretching raman band of carbon-carbon double bond (c=c) derived from polyethylene terephthalate (PET) confirmed nearby was 1730cm -1 Band intensity ratios of polarization orientations orthogonal to the fiber axis of raman bands derived from stretching of carbon-oxygen double bonds (c=o) of PET confirmed in the vicinity were calculated, and analysis results of band intensity ratios of polarization orientations orthogonal to the fiber axis of c=c stretching and c=o stretching of uniaxially stretched PET films were used as calibration data, and the band intensity ratios were converted into orientation parameters and outputted.
Band intensity ratio = I 1615 vertical/I 1730 Vertical direction
Orientation parameter = -4.3143 x band intensity ratio +12.711 (approximate expression in linear correlation was obtained using analysis results of uniaxially stretched PET film as calibration data)
The sample for orientation measurement was then cut into pieces by a microtome after embedding the resin (bisphenol epoxy resin, 24 hours curing). The slice thickness was set to 2.0. Mu.m. The sliced sample was cut slightly obliquely from the fiber axis so that the cut surface became an ellipse, and the thickness of the minor axis of the ellipse was selected and measured at a position where the thickness became a constant thickness. The measurement was performed in a microscopic mode, and the spot diameter of the laser light at the sample position was 1. Mu.m. The orientation was measured under polarized light. The band intensity ratio was calculated from the raman band intensities obtained separately, assuming that the polarization direction was perpendicular to the fiber axis. Further, the average value was calculated by measuring 4 times (n=4) for each island. The detailed conditions are shown below.
(laser Raman Spectroscopy)
A device; t-64000 (Joobin Yvon/(Horiko Seisaku Shuzo) manufactured by Horiko mountain of Horiko mountain)
Conditions; a measurement mode; microscopic Raman
An objective lens; x 100
A beam diameter; 1 μm
A light source; ar+ laser/514.5 nm
Laser power; 50mW
A diffraction grating; single 1800gr/mm
A slit; 100 μm
A detector; CCD/Jobin Yvon 1024X 256
C. Outer diameter of island
The cross section of the fiber sample was embedded with epoxy and cut with a Reichert-Nissei ultracut N (microtome) equipped with a diamond knife. Then, a cut surface was photographed using a microscope VHX-2000 made by kean, and 5 filaments were optionally extracted from the obtained photograph, and the long diameter was measured for each island of 4 filaments (n=4), and the arithmetic average of the island diameters of the total 20 filaments (n=20) was set as the average island diameter. When the island has a deformed cross section, the diameter of a circle contacting a portion protruding outward of the fiber cross-sectional shape is calculated as the island diameter.
D. Strength and elongation
The fiber sample was measured for tensile strength and elongation according to JIS L1013-2010, and a tensile strength-elongation curve was drawn. The test conditions were the same type of the tester, and the test was conducted at a constant speed of elongation, a clamp interval of 50cm, and a stretching speed of 50 cm/min. When the tensile strength at the time of cutting was smaller than the maximum strength, the maximum tensile strength and the elongation at that time were measured. The strength was obtained by the following equation.
Elongation = elongation at break (%)
Strength = tensile strength at cut (cN)/denier (dtex)
E. Denier of denier
The weight per unit length of the fiber sample was measured at 25℃under an atmosphere of 55% RH, and from this value, a weight of 10,000m was calculated. This was repeatedly measured 10 times, and the value obtained by rounding off the decimal point of the simple average value was set as the fineness.
F. Difference of filament length
The filament length difference was calculated by the following steps (a) to (c).
(a) 1 filament of sea-island composite polyester fiber with length of 15-20 cm is taken, the positions of 2 are knotted and marked at intervals of about 5cm, and two ends of the filament are connected and fixed with a proper metal frame with length of about 10 cm.
(b) The metal frame prepared in item (a) is immersed in a solution in which the sea portion from which the component is easily eluted is soluble, and the sea portion is removed. In the case where the easily soluble component is a copolyester comprising a polyalkylene glycol and isophthalic acid having a metal sulfonate group or a derivative thereof, an aqueous sodium hydroxide solution (concentration: 1 g/L) is used as an aqueous alkali solution. The aqueous alkali solution was heated to 92℃and the immersion time was set to 30 minutes. The metal frame was then removed and the filament sample was washed with raw water.
(c) After heat treatment for 1 minute by a 190 ℃ dryer, the filament sample was cut along the junction 2, and individual islands were broken down by tweezers, and each island was measured. The filament length difference is calculated by the following equation (1) with the length of the longest island being L2 and the length of the shortest island being L1. When the length of the yarn was measured, a load of 0.1g/dtex was applied thereto.
Silk length difference (%) = (L2-L1)/l1x100· (1)
G. Fabric evaluation (suede-like fabric)
(a) Fuzzing thickness
The nap thickness was measured according to JIS L1096-2010 and 8.4 (A method), and the average value was calculated by measuring the thickness of the suede-like woven fabric at any 5 points. The fuzzing thickness is qualified when the fuzzing thickness is more than 0.16 mm.
(b) Fuzzing uniformity
The suede-modified woven fabric was relatively evaluated by observing the surface of the fiber with a microscope VHX-2000 made by k/d, and the results of the evaluation of the fuzzing uniformity by an inspector (5 persons). As a result, the average value of the evaluation scores of the respective examiners was taken, and the decimal point was rounded off, and regarding the average value, 5 was S, 4 was a, 3 was B, and 1 to 2 were C. S, A was defined as acceptable fuzzing uniformity.
< evaluation criterion >
5, the method comprises the following steps: very excellent in
4, the following steps: slightly excellent
3, the method comprises the following steps: ordinary use
2, the method comprises the following steps: slightly worse
1, the method comprises the following steps: difference of difference
(c) Soft touch feeling
The suede-modified woven fabric was relatively evaluated as a result of soft touch evaluation by an inspector (5 persons) having a lot of experience in hand evaluation. As a result, the average value of the evaluation scores of the respective examiners was taken, and the decimal point was rounded off, and regarding the average value, 5 was S, 4 was a, 3 was B, and 1 to 2 were C. S, A was rated as soft touch.
< evaluation criterion >
5, the method comprises the following steps: very excellent in
4, the following steps: slightly excellent
3, the method comprises the following steps: ordinary use
2, the method comprises the following steps: slightly worse
1, the method comprises the following steps: difference of difference
(d) Dyeing property
The results of the dyeing properties (richness) evaluated by the inspector (5 persons) were evaluated relatively with respect to the suede-modified woven fabric dyed with the disperse dye. As a result, the average value of the evaluation scores of the respective examiners was taken, and the decimal point was rounded off, and regarding the average value, 5 was S, 4 was a, 3 was B, and 1 to 2 were C. S, A was set to be acceptable for dyeing.
(dyeing conditions)
A dye; dinanixNavy S-2G200%0.3% o.w.f.
A dyeing auxiliary; tetrosin PEC 5.0% o.w.f.
SunSalt 1.0％o.w.f.
A bath ratio; 1:100
Dyeing; after 15 minutes of treatment at 50 ℃, the temperature was raised at a rate of 1.6 ℃/min and the treatment was carried out at 98 ℃ for 20 minutes.
< evaluation criterion >
5, the method comprises the following steps: deep overall dyeing and excellent performance
4, the following steps: slightly excellent
3, the method comprises the following steps: ordinary use
2, the method comprises the following steps: slightly worse
1, the method comprises the following steps: the whole is light dyeing, poor
[ example 1 ]
(production of sea-island composite polyester fiber)
As the island a polymer for island a formation, a copolymer polyethylene terephthalate (PET 1) in which isophthalic acid and bisphenol a ethylene oxide adducts were copolymerized by 7.1mol% and 4.4mol% of iv=0.67 with respect to the total acid components was prepared, and as the island B polymer for island B formation, a polyethylene terephthalate (PET 2) in which iv=0.51 was prepared so that the intrinsic viscosity ratio was 1.31. As the readily soluble sea polymer, an alkali readily soluble polyethylene terephthalate (readily soluble PET 1) containing iv=0.69 of a component copolymerized so that 5-sodium isophthalate is 8.0mol% and polyethylene glycol having a number average molecular weight of 1000 is 9.0 wt% was prepared.
Island a polymer, island B polymer and sea polymer were melted at 265 ℃, 280 ℃ and 280 ℃ using an extruder, respectively, and then measured by a pump so that the spinning temperature was 275 ℃, and the melt was flowed into a nozzle while maintaining the temperature. The weight composite ratio of island a, island B and sea was set to 40/40/20, and the number of islands in the sea was 48 (island a=24 island, island b=24 island), and the number of islands in the sea was 24. The polymers merge inside the nozzle, and the sea polymer includes island polymers (island a polymer and island B polymer), and a composite structure is formed in which island a (1 st island shown by symbol 1) and island B (2 nd island shown by symbol 2) are disposed so as to be dispersed as shown in fig. 1, and the sea polymer is discharged from the nozzle. After cooling and solidifying the yarn discharged from the nozzle by an air cooling device so that the cooling start distance becomes 330mm, an oil solution was applied, the yarn was pulled at a speed of 1200 m/min by a roller heated to 90 ℃, stretched at a magnification of 3.3 times, heat-set by a roller heated at 150 ℃, and wound at a speed of 3950 m/min by a winder, whereby a sea-island composite polyester fiber of 70dtex-12f (filement) was obtained. The results of evaluating the obtained sea-island composite polyester fiber are shown in table 1.
(production of suede-like woven fabrics)
Then, the sea-island composite polyester fiber was subjected to additional twisting at 800T/m in the S direction using a double twisting machine, and then subjected to steaming and fixed twisting at 75 ℃ for 30 minutes for warping of the fabric. The weft yarn used a 56dtex-24f polytrimethylene terephthalate (PTT)/PET bimetallic wire.
Using these warp and weft yarns, weaving was performed in 5-piece satin weave using an air jet loom at a greige cloth density (warp yarn: 222/inch, weft yarn: 97/inch). Next, the obtained woven fabric was subjected to continuous scouring in an open width at 98 ℃, then subjected to a liquid-flow relaxation treatment at 130 ℃ and subjected to intermediate setting at 180 ℃. Then, the resultant was immersed in an aqueous sodium hydroxide solution (1 g/L) to carry out a sea-free treatment. After the obtained fabric was subjected to a napping process by a clothing napping machine, the fabric was subjected to a finish setting at 160℃to obtain a suede-like fabric. The results of the evaluation of the obtained suede-like woven fabric are shown in table 1.
[ example 2 ]
A sea-island composite polyester fiber of 70dtex and 12f was obtained in the same manner as in example 1 except that the number of islands per filament was changed to 108 islands (island a=54 islands, island b=54 islands) and the nozzle was changed, whereby a suede-like woven fabric was obtained. The evaluation results are shown in table 1.
[ example 3 ]
A sea-island composite polyester fiber of 70dtex and 12f was obtained in the same manner as in example 1 except that the number of islands per filament was changed to 22 islands (island a=11 islands, island b=11 islands) and the nozzle was changed, and a suede-like woven fabric was obtained. The evaluation results are shown in table 1.
[ example 4 ]
A sea-island composite polyester fiber of 70dtex and 12f was obtained in the same manner as in example 1 except that the number of islands per filament was changed to 432 islands (island a=216 islands, island b=216 islands) and the nozzle was changed, to obtain a suede-like woven fabric. The evaluation results are shown in table 1.
[ example 5 ]
A sea-island composite polyester fiber of 70dtex and 12f was obtained in the same manner as in example 1 except that the number of islands per filament was changed to 12 islands (island a=6 islands, island b=6 islands), and a suede-like woven fabric was obtained. The evaluation results are shown in table 1.
[ example 6 ]
A suede-like woven fabric was obtained by obtaining sea-island composite polyester fibers of 70dtex and 12f in the same manner as in example 1, except that polyethylene terephthalate (PET 3) having iv=0.56 was prepared as the island B polymer for forming the island B, and the intrinsic viscosity ratio was set to 1.20. The evaluation results are shown in table 1.
Example 7
A suede-like woven fabric was obtained in the same manner as in example 1, except that a copolymer polyethylene terephthalate (PET 4) having an iv=0.82 in which isophthalic acid and bisphenol a ethylene oxide adducts were copolymerized in an amount of 7.1mol% and 4.4mol% with respect to the total acid components was prepared as an island a polymer for forming the island a, and the intrinsic viscosity ratio was 1.60. The evaluation results are shown in table 1.
Example 8
An island-in-sea composite polyester fiber of 70dtex and 12f was obtained in the same manner as in example 1, except that an alkali-soluble polyethylene terephthalate (soluble PET 2) having iv=0.50, which was a component obtained by copolymerizing 8.0mol% of 5-sodium isophthalic acid sulfonate and 9.0 wt% of polyethylene glycol having a number average molecular weight of 1000, was prepared as a readily soluble sea polymer, and a suede-like woven fabric was obtained. The evaluation results are shown in table 2.
[ example 9 ]
An island-in-sea composite polyester fiber of 70dtex and 12f was obtained in the same manner as in example 1, except that an alkali-soluble polyethylene terephthalate (soluble PET 3) having iv=0.75, which was a component obtained by copolymerizing 8.0mol% of 5-sodium isophthalic acid sulfonate and 9.0 wt% of polyethylene glycol having a number average molecular weight of 1000, was prepared as a readily soluble sea polymer, and a suede-like woven fabric was obtained. The evaluation results are shown in table 2.
[ example 10 ]
An island-in-sea composite polyester fiber of 70dtex and 12f was obtained in the same manner as in example 1, except that an alkali-soluble polyethylene terephthalate (soluble PET 4) having iv=0.69, which was a component obtained by copolymerizing 8.0mol% of 5-sodium isophthalic acid sulfonate and 9.0 wt% of polyethylene glycol having a number average molecular weight of 500, was prepared as a readily soluble sea polymer, and a suede-like woven fabric was obtained. The evaluation results are shown in table 2.
[ example 11 ]
An island-in-sea composite polyester fiber of 70dtex and 12f was obtained in the same manner as in example 1, except that an alkali-soluble polyethylene terephthalate (soluble PET 5) having iv=0.69, which was a component obtained by copolymerizing 8.0mol% of 5-sodium isophthalic acid sulfonate and 9.0 wt% of polyethylene glycol having a number average molecular weight of 2000, was prepared as a readily soluble sea polymer, and a suede-like woven fabric was obtained. The evaluation results are shown in table 2.
[ example 12 ]
An island-in-sea composite polyester fiber of 70dtex and 12f was obtained in the same manner as in example 1, except that an alkali-soluble polyethylene terephthalate (soluble PET 6) having iv=0.69, which was a component obtained by copolymerizing 8.0mol% of 5-sodium isophthalic acid sulfonate and 5.0 wt% of polyethylene glycol having a number average molecular weight of 1000, was prepared as a readily soluble sea polymer, and a suede-like woven fabric was obtained. The evaluation results are shown in table 2.
[ example 13 ]
An island-in-sea composite polyester fiber of 70dtex and 12f was obtained in the same manner as in example 1, except that an alkali-soluble polyethylene terephthalate (soluble PET 7) having iv=0.69, which was a component obtained by copolymerizing 8.0mol% of 5-sodium isophthalic acid sulfonate and 15.0 wt% of polyethylene glycol having a number average molecular weight of 1000, was prepared as a readily soluble sea polymer, and a suede-like woven fabric was obtained. The evaluation results are shown in table 2.
Comparative example 1
A sea-island composite polyester fiber of 70dtex and 12f was obtained in the same manner as in example 1 except that the nozzles were changed so that the number of islands per filament became 720 islands (island a=360 islands, island b=360 islands), and a suede-like woven fabric was obtained. The evaluation results are shown in table 3.
The sea-island composite polyester fiber of comparative example 1 had a small outer diameter of 0.8 μm after the sea removal, and thus had a pale dyeing of the entire suede-like woven fabric, and had poor dyeing properties.
Comparative example 2
A sea-island composite polyester fiber of 70dtex and 12f was obtained in the same manner as in example 1 except that the number of islands per filament was changed to 8 islands (island a=4 islands, island b=4 islands), and a suede-like woven fabric was obtained. The evaluation results are shown in table 3.
The sea-island composite polyester fiber of comparative example 2 has a hard touch and poor soft touch because the outer diameter of the fiber after the sea removal is as large as 7.5. Mu.m.
[ comparative example 3 ]
An island-B polymer for forming island B was prepared, and a suede-like woven fabric was obtained in the same manner as in example 1 except that polyethylene terephthalate (PET 5) having iv=0.60 was prepared so that the intrinsic viscosity ratio was 1.12, and sea-island composite polyester fibers having 70dtex and 12f were obtained. The evaluation results are shown in table 3.
The sea-island composite polyester fiber of comparative example 3 has a low ratio of the orientation parameter of the largest orientation component to the orientation parameter of the smallest orientation component (orientation parameter ratio), and thus has a small difference in filament length, and thus has poor nap thickness and nap uniformity of the suede-modified fabric.
[ comparative example 4 ]
A suede-like woven fabric was obtained in the same manner as in example 1, except that a copolymer polyethylene terephthalate (PET 6) having an iv=0.90 in which isophthalic acid and bisphenol a ethylene oxide adducts were copolymerized in an amount of 7.1mol% and 4.4mol% with respect to the total acid components was prepared as an island a polymer for forming the island a so that the intrinsic viscosity ratio was 1.76. The evaluation results are shown in table 3.
The sea-island composite polyester fiber of comparative example 4 has a high ratio of the orientation parameter of the maximum orientation component and the orientation parameter, and the shrinkage of the yarn is excessive, so that the suede-like woven fabric has a hard feel and a poor soft touch.
[ comparative example 5 ]
An island-in-sea composite polyester fiber of 70dtex and 12f was obtained in the same manner as in example 1, except that an alkali-soluble polyethylene terephthalate (soluble PET 8) having iv=0.40, which was a component obtained by copolymerizing 8.0mol% of 5-sodium isophthalic acid sulfonate and 9.0 wt% of polyethylene glycol having a number average molecular weight of 1000, was prepared as a readily soluble sea polymer, and a suede-like woven fabric was obtained. The evaluation results are shown in table 3.
The sea-island composite polyester fiber of comparative example 5 has a high ratio of the orientation parameter of the maximum orientation component and the orientation parameter, and the shrinkage of the yarn is excessive, so that the suede-like woven fabric has a hard feel and a poor soft touch.
[ comparative example 6 ]
An island-in-sea composite polyester fiber of 70dtex and 12f was obtained in the same manner as in example 1, except that an alkali-soluble polyethylene terephthalate (soluble PET 9) having iv=0.80, which was a component obtained by copolymerizing 8.0mol% of 5-sodium isophthalic acid sulfonate and 9.0 wt% of polyethylene glycol having a number average molecular weight of 1000, was prepared as a readily soluble sea polymer, and a suede-like woven fabric was obtained. The evaluation results are shown in table 3.
The sea-island composite polyester fiber of comparative example 6 has a low orientation parameter of the largest orientation component and a small difference in filament length, and thus has a poor nap thickness and nap uniformity in the suede-modified fabric.
Comparative example 7
An island-in-sea composite polyester fiber of 70dtex and 12f was obtained in the same manner as in example 1, except that an alkali-soluble polyethylene terephthalate (soluble PET 10) having iv=0.69, which was a component obtained by copolymerizing 8.0mol% of 5-sodium isophthalic acid sulfonate and 9.0 wt% of polyethylene glycol having a number average molecular weight of 4000, was prepared as a readily soluble sea polymer, and a suede-like woven fabric was obtained. The evaluation results are shown in table 3.
The sea-island composite polyester fiber of comparative example 7 has a low orientation parameter of the maximum orientation component and a small difference in filament length, and thus has a poor nap thickness and nap uniformity of the suede-modified fabric. In addition, the strength of the yarn is low and the durability of the suede-like woven fabric is poor.
Comparative example 8
An island-in-sea composite polyester fiber of 70dtex and 12f was obtained in the same manner as in example 1, except that an alkali-soluble polyethylene terephthalate (soluble PET 11) having iv=0.69, which was a component obtained by copolymerizing 8.0mol% of 5-sodium isophthalic acid sulfonate and 3.0 wt% of polyethylene glycol having a number average molecular weight of 1000, was prepared as a readily soluble sea polymer, and a suede-like woven fabric was obtained. The evaluation results are shown in table 3.
The sea-island composite polyester fiber of comparative example 8 has a low orientation parameter of the largest orientation component and a small difference in filament length, and thus has a poor nap thickness and nap uniformity of the suede-modified fabric.
Comparative example 9
An island-in-sea composite polyester fiber of 70dtex and 12f was obtained in the same manner as in example 1 except that an alkali-soluble polyethylene terephthalate (soluble PET 12) having iv=0.55 and containing a component obtained by copolymerizing 5.0mol% of isophthalic acid 5-sodium sulfonate was prepared as the readily soluble sea polymer, and a suede-like woven fabric was obtained. The evaluation results are shown in table 3.
The sea-island composite polyester fiber of comparative example 9 has a low ratio of the orientation parameter of the maximum orientation component to the orientation parameter and a small difference in filament length, and thus has poor fuzzing thickness and fuzzing uniformity of the suede-like woven fabric. In addition, the strength of the yarn is low and the durability of the suede-like woven fabric is poor.
[ comparative example 10 ]
A suede-like woven fabric was obtained by obtaining sea-island composite polyester fibers of 70dtex and 12f in the same manner as in example 1 except that the cooling start distance of the yarn discharged from the nozzle was set to 200 mm. The evaluation results are shown in table 3.
The sea-island composite polyester fiber of comparative example 10 has a low orientation parameter of the largest orientation component and a small difference in filament length, and thus has a poor nap thickness and nap uniformity of the suede-modified fabric.
Although the present invention has been described in detail using specific schemes, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention. The present application is based on japanese patent application (japanese patent application 2020-193153) filed on 11/20/2020, which is incorporated by reference in its entirety.
Description of symbols
1: island 1 (island A)
2: the 2 nd island (island B).
Claims (3)
1. An island-in-sea composite polyester fiber having an island structure comprising a sea portion and 2 or more different island portions, wherein the island portion has an outer diameter of 1.0 to 7.0 [ mu ] m, wherein the ratio of the orientation parameter of the largest orientation component to the orientation parameter of the smallest orientation component, that is, the largest orientation parameter/smallest orientation parameter, of the island portion is 1.03 to 1.15, and wherein the orientation parameter of the largest orientation component is 4.0 to 8.5.
2. The sea-island composite polyester fiber according to claim 1, wherein the island portion of the sea-island composite polyester fiber which has been subjected to alkali treatment and dry heat treatment under the following conditions has a filament length difference of 15 to 40% as shown in the following formula (1),
alkali treatment conditions: 1g/L sodium hydroxide aqueous solution, 92 ℃ for 30 minutes, no load
Dry heat treatment conditions: 190 ℃ for 1 min without load
Silk length difference (%) = (L2-L1)/l1×100 … … (1)
In the formula (1), L1 is the length of the shortest island, and L2 is the length of the longest island.
3. The sea-island composite polyester fiber according to claim 1 or 2, wherein the sea portion comprises a copolyester obtained by copolymerizing isophthalic acid having a metal sulfonate group or a derivative thereof with a polyalkylene glycol.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020193153 | 2020-11-20 | ||
| JP2020-193153 | 2020-11-20 | ||
| PCT/JP2021/041432 WO2022107671A1 (en) | 2020-11-20 | 2021-11-10 | Sea-island composite polyester fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116490649A true CN116490649A (en) | 2023-07-25 |
Family
ID=81708836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202180077364.8A Pending CN116490649A (en) | 2020-11-20 | 2021-11-10 | Sea-island composite polyester fiber |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPWO2022107671A1 (en) |
| CN (1) | CN116490649A (en) |
| TW (1) | TW202235711A (en) |
| WO (1) | WO2022107671A1 (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS551354A (en) * | 1978-06-21 | 1980-01-08 | Toray Ind Inc | Three component conjugate fiber |
| JPH0830287B2 (en) * | 1987-07-01 | 1996-03-27 | 東レ株式会社 | Polyester 3-component composite yarn |
| JPH0770827A (en) * | 1993-06-16 | 1995-03-14 | Toray Ind Inc | Polyester three component conjugate fiber |
| JPH09279418A (en) * | 1996-04-16 | 1997-10-28 | Toray Ind Inc | Three-component conjugated fiber |
| JP3470514B2 (en) * | 1996-09-12 | 2003-11-25 | 東レ株式会社 | Method for producing high density bulky fabric |
| JP3858515B2 (en) * | 1999-05-10 | 2006-12-13 | 東レ株式会社 | Method for producing polyester mixed yarn |
| JP2011157647A (en) * | 2010-01-29 | 2011-08-18 | Teijin Fibers Ltd | Wiping cloth |
| JP2015183343A (en) * | 2014-03-26 | 2015-10-22 | 東レ株式会社 | sea-island type multi-component composite fiber |
-
2021
- 2021-11-10 CN CN202180077364.8A patent/CN116490649A/en active Pending
- 2021-11-10 JP JP2021568802A patent/JPWO2022107671A1/ja active Pending
- 2021-11-10 WO PCT/JP2021/041432 patent/WO2022107671A1/en active Application Filing
- 2021-11-18 TW TW110142903A patent/TW202235711A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| TW202235711A (en) | 2022-09-16 |
| JPWO2022107671A1 (en) | 2022-05-27 |
| WO2022107671A1 (en) | 2022-05-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4051287A (en) | Raised woven or knitted fabric and process for producing the same | |
| CN110268109B (en) | Heat-bondable core-sheath composite fiber and warp-knitted fabric | |
| US6761970B2 (en) | Poly(lactic acid) fiber | |
| JP2003238775A (en) | Resin composition and molding | |
| EP1500730B1 (en) | Polyester conjugate filament thick-fine yarn fabric and method for production thereof | |
| JP2007308821A (en) | Woven fabric for polishing fabric, method for producing the same, and magnetic disk-polishing fabric | |
| JP5819620B2 (en) | Polyester microfiber | |
| JP5350696B2 (en) | Fabrics and textile products | |
| JP2011157646A (en) | Polyester microfiber | |
| JP2004315984A (en) | Webbing for seat belt and method for producing the same | |
| JP5096049B2 (en) | Woven fabric for abrasive cloth, method for producing the same, and abrasive cloth | |
| CN116490649A (en) | Sea-island composite polyester fiber | |
| JP4922668B2 (en) | Permeability woven and knitted fabric, production method thereof and textile | |
| JP2011157647A (en) | Wiping cloth | |
| JP5260196B2 (en) | Fabrics and textile products | |
| KR20220003409A (en) | Recycled fiber, Composite for vehicle and method for preparing the same | |
| JP7176413B2 (en) | High tenacity fine polyester multifilament | |
| JP2000226734A (en) | Conjugate fiber, combined filament yarn and woven or knitted fabric | |
| JP5260376B2 (en) | Fabrics and textile products | |
| JP3863051B2 (en) | Polyester spotted yarn | |
| JP2009155791A (en) | Process for production of fabric, fabric and textile good | |
| JP2012207361A (en) | Ultra fine fiber and wiping cloth containing ultra fine fiber | |
| JP2022113213A (en) | Polyester-based composite combined filament finished yarn | |
| JP3925275B2 (en) | Polylactic acid crimped yarn excellent in heat resistance and method for producing the same | |
| JP4729832B2 (en) | Polylactic acid crimped yarn with excellent high-temperature mechanical properties |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |