KR20240010170A - Composite Fibers With Excellent Compression Recovery - Google Patents
Composite Fibers With Excellent Compression Recovery Download PDFInfo
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- KR20240010170A KR20240010170A KR1020220087375A KR20220087375A KR20240010170A KR 20240010170 A KR20240010170 A KR 20240010170A KR 1020220087375 A KR1020220087375 A KR 1020220087375A KR 20220087375 A KR20220087375 A KR 20220087375A KR 20240010170 A KR20240010170 A KR 20240010170A
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- Prior art keywords
- component
- diol
- fiber
- compression recovery
- polyester resin
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- 239000000835 fiber Substances 0.000 title claims abstract description 69
- 239000002131 composite material Substances 0.000 title claims abstract description 35
- 230000006835 compression Effects 0.000 title claims abstract description 34
- 238000007906 compression Methods 0.000 title claims abstract description 34
- 238000011084 recovery Methods 0.000 title claims abstract description 29
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 54
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 claims abstract description 44
- KKEYFWRCBNTPAC-UHFFFAOYSA-N terephthalic acid group Chemical group C(C1=CC=C(C(=O)O)C=C1)(=O)O KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 claims abstract description 42
- WOZVHXUHUFLZGK-UHFFFAOYSA-N dimethyl terephthalate Chemical compound COC(=O)C1=CC=C(C(=O)OC)C=C1 WOZVHXUHUFLZGK-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000002202 Polyethylene glycol Substances 0.000 claims abstract description 33
- 229920001223 polyethylene glycol Polymers 0.000 claims abstract description 33
- 150000002009 diols Chemical class 0.000 claims abstract description 22
- QWGRWMMWNDWRQN-UHFFFAOYSA-N 2-methylpropane-1,3-diol Chemical compound OCC(C)CO QWGRWMMWNDWRQN-UHFFFAOYSA-N 0.000 claims abstract description 20
- ZFTFAPZRGNKQPU-UHFFFAOYSA-N dicarbonic acid Chemical compound OC(=O)OC(O)=O ZFTFAPZRGNKQPU-UHFFFAOYSA-N 0.000 claims abstract description 19
- VNGOYPQMJFJDLV-UHFFFAOYSA-N dimethyl benzene-1,3-dicarboxylate Chemical compound COC(=O)C1=CC=CC(C(=O)OC)=C1 VNGOYPQMJFJDLV-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000002844 melting Methods 0.000 claims abstract description 14
- 229920001225 polyester resin Polymers 0.000 claims abstract description 14
- 239000004645 polyester resin Substances 0.000 claims abstract description 13
- 230000008018 melting Effects 0.000 claims abstract description 12
- 238000012643 polycondensation polymerization Methods 0.000 claims abstract description 9
- 239000007795 chemical reaction product Substances 0.000 claims description 2
- 239000000376 reactant Substances 0.000 abstract description 3
- 238000009987 spinning Methods 0.000 description 18
- 239000004745 nonwoven fabric Substances 0.000 description 16
- 229920000642 polymer Polymers 0.000 description 11
- 229920000728 polyester Polymers 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 9
- 239000000178 monomer Substances 0.000 description 9
- 229920005989 resin Polymers 0.000 description 9
- 239000011347 resin Substances 0.000 description 9
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 239000004814 polyurethane Substances 0.000 description 8
- 229920002635 polyurethane Polymers 0.000 description 8
- 229920002334 Spandex Polymers 0.000 description 7
- 238000005886 esterification reaction Methods 0.000 description 7
- 239000004759 spandex Substances 0.000 description 7
- 239000011230 binding agent Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- VXUYXOFXAQZZMF-UHFFFAOYSA-N titanium(IV) isopropoxide Chemical compound CC(C)O[Ti](OC(C)C)(OC(C)C)OC(C)C VXUYXOFXAQZZMF-UHFFFAOYSA-N 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- QPKOBORKPHRBPS-UHFFFAOYSA-N bis(2-hydroxyethyl) terephthalate Chemical compound OCCOC(=O)C1=CC=C(C(=O)OCCO)C=C1 QPKOBORKPHRBPS-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000009477 glass transition Effects 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 239000002685 polymerization catalyst Substances 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N urethane group Chemical group NC(=O)OCC JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
- ZOIORXHNWRGPMV-UHFFFAOYSA-N acetic acid;zinc Chemical compound [Zn].CC(O)=O.CC(O)=O ZOIORXHNWRGPMV-UHFFFAOYSA-N 0.000 description 1
- 239000004840 adhesive resin Substances 0.000 description 1
- 229920006223 adhesive resin Polymers 0.000 description 1
- 229920006125 amorphous polymer Polymers 0.000 description 1
- -1 butoxy titanate Chemical compound 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 150000001923 cyclic compounds Chemical class 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- JVLRYPRBKSMEBF-UHFFFAOYSA-K diacetyloxystibanyl acetate Chemical compound [Sb+3].CC([O-])=O.CC([O-])=O.CC([O-])=O JVLRYPRBKSMEBF-UHFFFAOYSA-K 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 210000004177 elastic tissue Anatomy 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- UEGPKNKPLBYCNK-UHFFFAOYSA-L magnesium acetate Chemical compound [Mg+2].CC([O-])=O.CC([O-])=O UEGPKNKPLBYCNK-UHFFFAOYSA-L 0.000 description 1
- 239000011654 magnesium acetate Substances 0.000 description 1
- 229940069446 magnesium acetate Drugs 0.000 description 1
- 235000011285 magnesium acetate Nutrition 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 238000007539 photo-oxidation reaction Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000011342 resin composition Substances 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 125000005374 siloxide group Chemical group 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 238000005809 transesterification reaction Methods 0.000 description 1
- 239000004246 zinc acetate Substances 0.000 description 1
- 235000013904 zinc acetate Nutrition 0.000 description 1
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
- 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
-
- 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
- D01D5/22—Formation of filaments, threads, or the like with a crimped or curled structure; with a special structure to simulate wool
-
- 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
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
- D01D5/32—Side-by-side structure; Spinnerette packs therefor
-
- 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
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
- D01D5/34—Core-skin structure; Spinnerette packs therefor
-
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Multicomponent Fibers (AREA)
Abstract
본 발명은 압축회복력이 우수한 복합섬유에 있어서, 상기 복합섬유는 제1성분으로 폴리에스테르계 수지 및 제2성분으로 상기 폴리에스테르계 수지보다 융점이 20℃ 이상 낮은 폴리에스테르계 수지로 형성되되, 상기 제2성분의 폴리에스테르계 수지는 디올(Diol)과 디카르본산(Dicarbonic acid) 또는 유도체, 1,4-부탄디올(1,4-BD), 폴리에틸렌글리콜(PEG)로 구성되며, 상기 디올(Diol)은 에틸렌글리콜(EG) 및 2-메틸-1,3-프로판다이올(MPD)로 구성되고,상기 디카르본산(Dicarbonic acid) 또는 유도체는 테레프탈릭에시드(TPA), 디메틸테레프탈레이트(DMT) 및 디메틸이소프탈레이트(DMI)로 구성되며, 상기 디카르본산(Dicarbonic acid) 또는 유도체와 디올(Diol)과 에스테르화 반응시키고 그 반응물을 1,4-부탄디올(1,4-BD), 폴리에틸렌글리콜(PEG)과 축중합시켜 완성된 것에 특징이 있는 압축회복력이 우수한 복합섬유에 관한 것이다.The present invention relates to a composite fiber having excellent compression recovery, wherein the composite fiber is formed of a polyester resin as a first component and a polyester resin whose melting point is at least 20°C lower than the polyester resin as the second component. The second component polyester resin is composed of diol, dicarbonic acid or derivatives, 1,4-butanediol (1,4-BD), and polyethylene glycol (PEG), and the diol (Diol ) is composed of ethylene glycol (EG) and 2-methyl-1,3-propanediol (MPD), and the dicarbonic acid or derivative is terephthalic acid (TPA) and dimethyl terephthalate (DMT) and dimethyl isophthalate (DMI), which is esterified with the dicarbonic acid or derivative and diol, and the reactant is 1,4-butanediol (1,4-BD) and polyethylene glycol ( This relates to a composite fiber with excellent compression recovery, which is characterized by being completed by condensation polymerization with PEG).
Description
본 발명은 압축회복력이 우수한 복합섬유 및 섬유집합체에 관한 것으로, 기존의 복합섬유와 다르게 탄성의 특성을 나타내는 모노머(Monomer)가 제2성분의 폴리머 조성에 추가된 압축회복력이 우수한 복합섬유 및 섬유집합체에 관한 것이다. The present invention relates to composite fibers and fiber aggregates with excellent compression recovery, and to composite fibers and fiber aggregates with excellent compression recovery in which a monomer, which exhibits elastic properties unlike existing composite fibers, is added to the polymer composition of the second component. It's about.
직물밀도 10∼45g/㎡의 저밀도 부직포는 종이기저귀, 위생냅킨 등의 표면재료로 사용된다. 부직포의 용도가 다양화됨에 따라, 부직포에 요구되는 특성 또한 엄격하게 되고, 압축회복율이 우수한 부직포에 대한 요구가 있어 왔다.Low-density nonwoven fabric with a fabric density of 10 to 45 g/m2 is used as a surface material for paper diapers, sanitary napkins, etc. As the uses of nonwoven fabrics have become more diverse, the properties required for nonwoven fabrics have also become more stringent, and there has been a demand for nonwoven fabrics with excellent compression recovery rates.
이러한 요구에 부응하기 위하여 미세하고 열접착성이 있으며, 저융점 성분이 충분한 열접착강도를 제공할 뿐만 아니라 특히, 압축회복율이 우수한 복합섬유가 필요하게 된다.In order to meet these demands, composite fibers that are fine, heat-sealable, and have low melting point components that not only provide sufficient heat-seal strength but also have particularly excellent compression recovery rates are needed.
탄성 열접착 부직포는 위생재 및 자동차용 등 다양한 부직포용도로 많이 사용되며, 압축회복 탄성을 갖는 저융점 열접착의 시스부로 구성된 복합섬유를 이용하여 제조될 수 있다. Elastic heat-bonded nonwoven fabric is widely used in various non-woven fabric applications such as sanitary materials and automobiles, and can be manufactured using composite fibers composed of a low-melting point heat-bonded sheath portion with compression recovery elasticity.
일반 탄성섬유로 폴리우레탄 계열의 스판덱스가 알려져 있다. 스판덱스는 강도, 신도 및 탄성회복률이 다른 소재 대비 뛰어나다. 그러나 스판덱스는 내열성, 내염소성, 내광성 등이 떨어지는 단점이 있다. 이러한 단점을 보완하기 위해 개발된 폴리에스테르계 탄성사의 경우 내열성, 내염소성, 내광성 등은 스판덱스 보다 뛰어난 장점이 있으나, 스판덱스 대비 강신도 및 탄성회복력은 떨어진다.Polyurethane-based spandex is known as a general elastic fiber. Spandex has superior strength, elongation, and elastic recovery rate compared to other materials. However, spandex has disadvantages such as poor heat resistance, chlorine resistance, and light resistance. Polyester-based elastic yarn, developed to compensate for these shortcomings, has advantages over spandex in heat resistance, chlorine resistance, and light resistance, but is inferior to spandex in tensile strength and elastic recovery.
스판덱스의 경우 폴리우레탄 계열로, 폴리우레탄은 도 1과 같이 우레탄 관능기로 이루어진 하드 세그먼트와 소프트 세그먼트로 이루어진 형태로, 소프트 세그먼트의 유연한 구조로 인하여 높은 신도의 발현이 가능하다.In the case of spandex, it is a polyurethane series, and polyurethane is composed of a hard segment and a soft segment made of urethane functional groups as shown in Figure 1, and can exhibit high elongation due to the flexible structure of the soft segment.
반면 하드 세그먼트의 우레탄 관능기의 수소원자와 산소원자 사이의 수소결합에 의해 이웃한 폴리우레탄 분자사이에 강력한 분자간 결합력으로 인하여 신축 후 다시 원상태로 복원되는 탄성회복력이 발현된다.On the other hand, the hydrogen bond between the hydrogen and oxygen atoms of the urethane functional group of the hard segment creates a strong intermolecular bond between neighboring polyurethane molecules, resulting in elastic recovery that restores the polyurethane to its original state after stretching.
폴리에스테르계 탄성수지의 경우 이러한 폴리우레탄의 구조를 모사하여, 하드 세그먼트는 폴리에스테르 관능기로 대체하고 소프트 세그먼트는 유사한 탄성의 특성을 나타내는 모노머(Monomer)를 높은 신도의 발현이 가능하였으나, 폴리에스테르 관능기 사이의 수소결합은 폴리우레탄 대비하여 낮거나 거의 없는 수준이라 폴리에스테르계 탄성사의 탄성회복률은 스판덱스 대비 낮은 수준이다.In the case of polyester-based elastic resin, it was possible to achieve high elongation by imitating the structure of polyurethane, replacing the hard segments with polyester functional groups and replacing the soft segments with monomers showing similar elastic properties. However, the polyester functional group The hydrogen bond between polyurethane is low or almost non-existent compared to polyurethane, so the elastic recovery rate of polyester elastic yarn is lower than that of spandex.
이러한 폴리에스테르계 탄성수지의 낮은 탄성회복률을 개선하기 위하여, 분자간 결합력을 증가시키기 위해 분자간 가교가 가능한 3관능이상의 모노머를 사용하는 방안도 제시되었으나, 이 경우 단순 가교는 신도의 저감과 함께 방사 공정성의 저하를 초래한다.In order to improve the low elastic recovery rate of polyester-based elastic resins, a method of using trifunctional or higher monomers capable of cross-linking between molecules to increase the intermolecular bonding force has been proposed. However, in this case, simple cross-linking reduces elongation and reduces spinning process. causes deterioration.
따라서 탄성회복율 및 저융점 접착율이 향상된 부직포용 열접착 탄성복합섬유의 개발이 필요하다. Therefore, there is a need to develop thermally bonded elastic composite fibers for nonwovens with improved elastic recovery rate and low melting point adhesion rate.
상기와 같은 종래기술의 문제점을 해결하기 위해 발명된 것으로 본 발명의 목적으로 탄성회복율을 향상시키기 위해 제2성분의 분자간 결합력을 증가시키는 탄성모노머를 첨가하여 압축회복력이 우수한 복합섬유 및 섬유집합체를 제공하는 것에 있다.It was invented to solve the problems of the prior art as described above. The purpose of the present invention is to provide composite fibers and fiber aggregates with excellent compression recovery by adding an elastic monomer that increases the intermolecular bonding force of the second component to improve the elastic recovery rate. It's in doing.
상기와 같은 문제를 해결하기 위하여 본 발명은 압축회복력이 우수한 복합섬유에 있어서, 상기 복합섬유는 제1성분으로 폴리에스테르계 수지 및 제2성분으로 상기 폴리에스테르계 수지보다 융점이 20℃ 이상 낮은 폴리에스테르계 수지로 형성되되, 상기 제2성분의 폴리에스테르계 수지는 디올(Diol)과 디카르본산(Dicarbonic acid) 또는 유도체, 1,4-부탄디올(1,4-BD), 폴리에틸렌글리콜(PEG)로 구성되며, 상기 디올(Diol)은 에틸렌글리콜(EG) 및 2-메틸-1,3-프로판다이올(MPD)로 구성되고,상기 디카르본산(Dicarbonic acid) 또는 유도체는 테레프탈릭에시드(TPA), 디메틸테레프탈레이트(DMT) 및 디메틸이소프탈레이트(DMI)로 구성되며, 상기 디카르본산(Dicarbonic acid) 또는 유도체와 디올(Diol)과 에스테르화 반응시키고 그 반응물을 1,4-부탄디올(1,4-BD), 폴리에틸렌글리콜(PEG)과 축중합시켜 완성된 것에 특징이 있는 압축회복력이 우수한 복합섬유를 제공한다. In order to solve the above problem, the present invention provides a composite fiber with excellent compression recovery, wherein the composite fiber includes a polyester resin as a first component and a polyester resin with a melting point of 20°C or more lower than that of the polyester resin as the second component. It is formed of an ester-based resin, and the polyester-based resin of the second component is diol, dicarbonic acid or derivatives, 1,4-butanediol (1,4-BD), and polyethylene glycol (PEG). The diol is composed of ethylene glycol (EG) and 2-methyl-1,3-propanediol (MPD), and the dicarbonic acid or derivative is terephthalic acid (TPA). ), dimethyl terephthalate (DMT), and dimethyl isophthalate (DMI), and the dicarbonic acid or derivative is esterified with diol and the reactant is 1,4-butanediol (1, 4-BD), which provides composite fibers with excellent compression recovery properties that are completed by condensation polymerization with polyethylene glycol (PEG).
또한 본 발명은 상기 상기 디카르본산(Dicarbonic acid) 또는 유도체의 구성성분의 함량으로 테레프탈릭에시드(TPA) 50~90몰%, 디메틸테레프탈레이트(DMT) 5~30몰% 및 디메틸이소프탈레이트(DMI) 10~20몰%인 것에 특징이 있는 압축회복력이 우수한 복합섬유를 제공한다. In addition, the present invention relates to the content of the components of the dicarbonic acid or derivative, including 50 to 90 mol% of terephthalic acid (TPA), 5 to 30 mol% of dimethyl terephthalate (DMT), and dimethyl isophthalate (DMI). ) Provides composite fibers with excellent compression recovery, characterized by 10 to 20 mol%.
또한 본 발명의 상기 복합섬유는 사이드 바이 사이드(side by side) 또는 시스-코어 (sheath-core)인 것으로, 상기 제1성분 및 제2성분이 편심형태의 사이드 바이 사이드 또는 제1성분이 코어부, 제2성분이 시스부인 것에 특징이 있는 압축회복력이 우수한 복합섬유를 제공한다. In addition, the composite fiber of the present invention is side by side or sheath-core, and the first and second components are eccentric side by side or the first component is a core portion. Provides a composite fiber with excellent compression recovery, characterized by the fact that the second component is a sheath part.
본 발명은 복합섬유 및 섬유집합체로써 분자간 결합력을 증가시키는 탄성모노머를 첨가하여 압축회복력이 우수한 특징이 있다. The present invention is a composite fiber and fiber aggregate that is characterized by excellent compression recovery by adding an elastic monomer that increases intermolecular bonding force.
이하 본 발명의 바람직한 실시예를 상세히 설명하기로 한다. 우선, 본 발명을 설명함에 있어, 관련된 공지기능 혹은 구성에 대한 구체적인 설명은 본 발명의 요지를 모호하지 않게 하기 위하여 생략한다.Hereinafter, preferred embodiments of the present invention will be described in detail. First, in describing the present invention, detailed descriptions of related known functions or configurations are omitted in order to not obscure the gist of the present invention.
본 명세서에서 사용되는 정도의 용어 '약', '실질적으로' 등은 언급된 의미에 고유한 제조 및 물질 허용오차가 제시될 때 그 수치에서 또는 그 수치에 근접한 의미로 사용되고, 본 발명의 이해를 돕기 위해 정확하거나 절대적인 수치가 언급된 개시 내용을 비양심적인 침해자가 부당하게 이용하는 것을 방지하기 위해 사용된다.As used herein, the terms 'about', 'substantially', etc. are used to mean at or close to the numerical value when manufacturing and material tolerances inherent in the stated meaning are presented, and are used to enhance the understanding of the present invention. Precise or absolute figures are used to assist in preventing unscrupulous infringers from taking unfair advantage of stated disclosures.
본 발명은 압축회복력이 우수한 복합섬유에 관한 것이다. 특히 복합섬유의 제2성분에 기술적 특징이 있는 것으로 저융점 폴리에스테르수지에 압축회복율 물성을 향상시키기 위해 1,4-부탄디올(1,4-BD), 폴리에틸렌글리콜(PEG)의 모노머(monomer)가 포함된 것에 기술적 특징이 있다. The present invention relates to composite fibers with excellent compression recovery. In particular, the second component of the composite fiber has technical characteristics, and monomers of 1,4-butanediol (1,4-BD) and polyethylene glycol (PEG) are added to the low-melting point polyester resin to improve the compression recovery properties. Included are technical features.
본 발명 제1성분은 폴리에스테르계 수지는 일반적인 폴리에스테르 수지로 바람직하게는 테레프탈릭에시드(TPA) 및 에틸렌글리콜(EG)가 1:1의 몰비를 갖는다.The first component of the present invention is a general polyester resin, and preferably has terephthalic acid (TPA) and ethylene glycol (EG) in a molar ratio of 1:1.
본 발명 제2성분은 디카르본산(Dicarbonic acid) 또는 유도체와 디올(Diol)과 에스테르화 반응시키고 그 반응물을 1,4-부탄디올(1,4-BD), 폴리에틸렌글리콜(PEG)과 축중합시켜 완성된다. The second component of the present invention is obtained by esterifying dicarbonic acid or a derivative with diol and condensation polymerization of the reactant with 1,4-butanediol (1,4-BD) and polyethylene glycol (PEG). It is completed.
이 경우 2가지 방법으로 제조할 수 있으며 디카르본산(Dicarbonic acid) 또는 유도체와 디올과의 반응에 의한 에스테르교환법(DMT법) 또는 직접 에스테르화법(TPA법)에 의한 비스-히드록시에틸테레프탈레이트(BHET) 및 BHET의 저분자량의 축합물을 합성하고 디올을 제거하면서 용융, 축합중합시킴으로써 분자쇄의 길이를 증가시키는 방법이 있다. In this case, it can be produced in two ways: bis-hydroxyethyl terephthalate (DMT method) by reaction between dicarbonic acid or a derivative and diol, or direct esterification method (TPA method). There is a method of increasing the length of the molecular chain by synthesizing BHET) and a low molecular weight condensate of BHET and melting and condensing polymerization while removing the diol.
본 발명은 디카르본산(Dicarbonic acid) 또는 유도체와 디올과의 반응에 의한 에스테르교환법(DMT법)을 따르며, The present invention follows the transesterification method (DMT method) by reacting dicarbonic acid or a derivative with a diol,
상기 디카르본산(Dicarbonic acid) 또는 유도체는 테레프탈릭에시드(TPA), 디메틸테레프탈레이트(DMT) 및 디메틸이소프탈레이트(DMI)로 구성되며, The dicarbonic acid or derivative consists of terephthalic acid (TPA), dimethyl terephthalate (DMT), and dimethyl isophthalate (DMI),
디올은 에틸렌글리콜(EG) 및 2-메틸-1,3-프로판다이올(MPD)로 구성된다. The diol consists of ethylene glycol (EG) and 2-methyl-1,3-propanediol (MPD).
상기 디올(Diol) 중 에틸렌글리콜(EG)은 분자량 500~1,000이다. Among the diols, ethylene glycol (EG) has a molecular weight of 500 to 1,000.
상기 디카르본산(Dicarbonic acid) 또는 유도체의 구성성분의 함량으로 테레프탈릭에시드(TPA) 50~90몰%, 디메틸테레프탈레이트(DMT) 5~30몰% 및 디메틸이소프탈레이트(DMI) 10~20몰%이며,The content of the components of the dicarbonic acid or derivative is 50 to 90 mol% of terephthalic acid (TPA), 5 to 30 mol% of dimethyl terephthalate (DMT), and 10 to 20 mole of dimethyl isophthalate (DMI). %,
상기 디올의 구성성분 및 1,4-부탄디올(1,4-BD), 폴리에틸렌글리콜(PEG)의 함량으로 에틸렌글리콜(EG) 20~50몰%, 1,4-부탄디올(1,4-BD) 10~30몰%, 폴리에틸렌글리콜(PEG) 1~20몰% 및 2-메틸-1,3-프로판다이올(MPD) 20~50몰%이다. The components of the diol and the content of 1,4-butanediol (1,4-BD) and polyethylene glycol (PEG) include 20 to 50 mol% of ethylene glycol (EG) and 1,4-butanediol (1,4-BD). 10 to 30 mol%, polyethylene glycol (PEG) 1 to 20 mol%, and 2-methyl-1,3-propanediol (MPD) 20 to 50 mol%.
본 발명에 따르면 2-메틸-1,3-프로판다이올(MPD)을 이용하여 수지를 제조하는 경우 부반응 생성물인 고리형 화합물의 생성에 관여하지 않아, 이소프탈산을 사용하는 경우 보다 방사공정시 팩 교환주기를 늘릴 수 있어 생산성 향상을 도모할 수 있다.According to the present invention, when producing a resin using 2-methyl-1,3-propanediol (MPD), it is not involved in the generation of cyclic compounds, which are side reaction products, and thus packs during the spinning process compared to when using isophthalic acid. The exchange cycle can be increased, thereby improving productivity.
또한, 2-메틸-1,3-프로판다이올(MPD)의 두번째 탄소의 메틸기는 고분자 주쇄가 회전을 하는데 용이하게 하고 고분자의 말단 부분인 것처럼 작용하여 주쇄 사이의 자유공간을 넓힌다. 이는 이소프탈산의 메타-구조가 고분자 주쇄에 꺾임 구조를 형성하여 결정성 고분자가 되는 것을 방해하고 비정형 분자구조를 갖도록 하는 것과 동일한 효과를 나타낸다. 따라서 고분자의 용융온도를 저하시키고 결정성을 파괴하는 데 있어 매우 효과적으로 기능한다.In addition, the methyl group on the second carbon of 2-methyl-1,3-propanediol (MPD) facilitates rotation of the polymer main chain and acts as the terminal part of the polymer to expand the free space between main chains. This has the same effect as the meta-structure of isophthalic acid forming a bent structure in the polymer main chain, preventing it from becoming a crystalline polymer and having an amorphous molecular structure. Therefore, it functions very effectively in lowering the melting temperature of polymers and destroying crystallinity.
한편, 투입량 대비 용융온도를 많이 떨어뜨릴수록, 유리전이온도를 적게 떨어뜨릴수록 효과적인 공중합 성분이라 할 수 있는데, 2-메틸-1,3-프로판다이올(MPD)의 경우 용융온도를 떨어뜨리는 효과는 크지만 유리전이온도를 크게 떨어뜨리지 않아 고함량을 투입하여 비정형 고분자가 된 상태에서도 65℃ 이상의 유리전이온도를 나타낸다. On the other hand, the more the melting temperature is lowered compared to the input amount, the less the glass transition temperature is lowered, the more effective the copolymerization ingredient is. In the case of 2-methyl-1,3-propanediol (MPD), it has the effect of lowering the melting temperature. Although it is large, it does not significantly lower the glass transition temperature, showing a glass transition temperature of over 65°C even when a high content is added to form an amorphous polymer.
따라서, 낮은 공정 온도에서도 섬유간 열접착을 가능하게 할뿐 아니라, 부직포 제조 후 100~130℃의 고온에서도 형태안정성이 우수하다. 또한, 열적 특성이 이소프탈산과 매우 유사한데 상대적으로 고가인 이소프탈산을 대체하여 사용시 생산원가를 낮출 수 있다.Therefore, not only does it enable thermal bonding between fibers even at low processing temperatures, but it also has excellent shape stability even at high temperatures of 100 to 130°C after manufacturing the nonwoven fabric. In addition, its thermal properties are very similar to isophthalic acid, and production costs can be reduced when used as a replacement for relatively expensive isophthalic acid.
본 발명인 압축회복력이 우수한 폴리에스테르계의 제2성분의 제조 방법에 대해 우선 에스테르화 반응를 설명하면, 하드 세그먼트를 형성하도록 디올 성분과 디카르본산(Dicarbonic acid) 유도체와 에스테르화 반응시킨다. First, the esterification reaction will be described in relation to the present invention's method for producing a polyester-based second component with excellent compression recovery. An esterification reaction is performed between a diol component and a dicarbonic acid derivative to form a hard segment.
반응용량은 디카르본산(Dicarbonic acid) 유도체 및 디올(Diol)의 몰 분율은 1 대 1.0~1.8 비율로 투입하며 과잉 투입된 디올(Diol)성분은 축중합반응 중 감압공정을 통해 대부분 회수되며 디카르본산(Dicarbonic acid) 유도체 및 디올(Diol)은 제2성분수지조성물 중 30~99중량% 값을 갖는다.For the reaction capacity, the mole fraction of dicarbonic acid derivatives and diol is added at a ratio of 1 to 1.0 to 1.8, and most of the excess diol component is recovered through a decompression process during the condensation polymerization reaction and converted into dicarboxylic acid. Dicarbonic acid derivatives and diol have a value of 30 to 99% by weight in the second component resin composition.
상기 에스테르화 반응에서 사용되는 촉매는 초산아연, 초산소듐, 초산마그네슘, 테트라노 말부톡시티타네이트, 테트라이소프로필티타네이트, 티탄옥사이드/실리옥사이드마이크로코폴리머, 및 나노티타네이트로 이루어지는 군으로부터 선택되는 하나 이상이고, 폴리에스테르계 탄성수지 100 중량부에 대하여 15000 ppm 범위로 사용되며 촉매의 투입량이 부족할 경우 에스테르화 반응속도가 느려지며, 과할 경우 제2성분 수지의 열안정성이 나빠진다.The catalyst used in the esterification reaction is selected from the group consisting of zinc acetate, sodium acetate, magnesium acetate, tetrano malbutoxy titanate, tetraisopropyl titanate, titanium oxide/siloxide microcopolymer, and nano titanate. It is used in the range of 15,000 ppm per 100 parts by weight of polyester-based elastic resin. If the amount of catalyst added is insufficient, the esterification reaction rate slows down, and if it is excessive, the thermal stability of the second component resin deteriorates.
에스테르화 반응을 진행한 뒤 이어서 1,4-부탄디올(1,4-BD) 및 폴리에틸렌글리콜(PEG)과 축중합을 진행한다. After the esterification reaction, condensation polymerization with 1,4-butanediol (1,4-BD) and polyethylene glycol (PEG) is performed.
상기 에스테르화 반응에 의해 얻어진 올리고머 용액과 1,4-부탄디올(1,4-BD)및 폴리에틸렌글리콜(PEG)을 축중합 촉매, 열안정제, 광산화 안정제와 함께 진공감압이 가능한 내압, 내열 반응기에 투입한 후 760~1000 Torr의 압력 및 200~270의 온도에서 과량의 디올(Doil)을 증류한 후, 최종 진공도 1mmHg 이하의 고진공하에서 축중합을 완료하여 본 발명인 제2성분 수지를 얻는다.The oligomer solution obtained by the above esterification reaction, 1,4-butanediol (1,4-BD), and polyethylene glycol (PEG), along with a condensation polymerization catalyst, heat stabilizer, and photooxidation stabilizer, are placed in a pressure-resistant and heat-resistant reactor capable of vacuum decompression. After distilling the excess diol (Doil) at a pressure of 760 to 1000 Torr and a temperature of 200 to 270 Torr, condensation polymerization is completed under high vacuum with a final vacuum degree of 1 mmHg or less to obtain the second component resin of the present invention.
또한 높은 탄성회복률을 유지하기 위해서는 소프트 세그먼트의 함량은 전체 폴리머 중량 대비 40 ~ 70 wt%를 유지하여야 하며 폴리에틸렌글리콜(PEG)의 분자량은 1,000 미만이면 탄성적 성질이 낮아지는 경향이 있으며, 3,000을 초과하는 경우 소프트 세그먼트의 길이가 너무 길어 중합반응 시간이 지연되는 경향이 있다.In addition, in order to maintain a high elastic recovery rate, the content of soft segments must be maintained at 40 to 70 wt% relative to the total polymer weight. If the molecular weight of polyethylene glycol (PEG) is less than 1,000, elastic properties tend to be low, and if it exceeds 3,000. In this case, the length of the soft segment is too long, so the polymerization reaction time tends to be delayed.
폴레에스터계 탄성 소재에 있어 소프트 세그먼트의 함량은 탄성특성을 나타내는 중요한 수지로 소프트 세그먼트의 함량이 낮으면 탄성반발력은 높아지나 신도가 낮아지며, 소프트 세그먼트의 함량이 높아지면 탄성반발력은 낮아지나 신도가 높아진다. 최적의 탄성반발력과 신도를 위하여 소프트 세그먼트의 함량은 적정량 유지하여야 하며, 소프트 세그먼트의 적정 함량은 40 ~ 70wt% 이다.In polyester-based elastic materials, the soft segment content is an important resin that indicates elastic properties. If the soft segment content is low, the elastic repulsion increases but the elongation decreases. If the soft segment content increases, the elastic repulsion decreases but the elongation increases. . For optimal elastic rebound and elongation, the content of soft segments must be maintained at an appropriate amount, and the appropriate content of soft segments is 40 to 70 wt%.
또한 상기 축중합 단계에서 사용되는 중합촉매는 삼산화안티몬, 안티몬아세테이트, 테트라노말부톡시티타네이트, 테트라이소프로필티타네이트, 티탄옥사이드/실리카옥사이드마이크로코폴리머, 및 나노티타네이트로 이루어지는 군으로부터 선택되는 하나 이상이고, 폴리에스터계 탄성접착수지 100 중량부에 대하여 15000 ppm 범위로 사용할 수 있다. In addition, the polymerization catalyst used in the condensation polymerization step is one selected from the group consisting of antimony trioxide, antimony acetate, tetranormal butoxy titanate, tetraisopropyl titanate, titanium oxide/silica oxide microcopolymer, and nano titanate. This is the above, and can be used in the range of 15,000 ppm per 100 parts by weight of polyester-based elastic adhesive resin.
본 발명은 제1성분 및 제2성분 수지를 사이드 바이 사이드(side by side) 또는 시스-코어 (sheath-core)인 것으로 적용시킬 수 있다. The present invention can be applied with the first and second component resins side by side or sheath-core.
사이드 바이 사이드는 상기 제1성분 및 제2성분이 편심형태로 구성될 수 있으며, 시스-코어 형태는 제1성분이 코어부, 제2성분이 시스부인 것으로 할 수 있다. In the side-by-side configuration, the first and second components may be configured in an eccentric shape, and in the sheath-core configuration, the first component may be the core portion and the second component may be the sheath portion.
또한 상기 복합섬유를 활용하여 섬유집합체로 구성할 수 있다. Additionally, the composite fibers can be used to form a fiber aggregate.
이상에서 설명한 바와 같은 본 설명의 특징 및 기타의 장점은 후술되는 실시예로부터 보다 명백하게 될 것이며, 하기 실시예는 예시적인 목적으로 기재될 뿐 본 발명의 보호범위를 한정하거나 제한하는 것으로 해석될 수 없다.The features and other advantages of the present description as described above will become more apparent from the examples described below, and the examples below are only described for illustrative purposes and should not be construed as limiting or restricting the scope of protection of the present invention. .
실시예 1Example 1
[고탄성 복합섬유] 디메틸테레프탈레이트(DMT)가 20mole%, 디메틸이소프탈레이트(DMI) 5mole%, 테레프탈릭에시드(TPA) 75mole%, 1,4-부탄디올(1,4-BD) 20mole%, 폴리에틸렌글리콜(PEG) 5mole%, 에틸렌글리콜(EG) 35mole%, 2-메틸-1,3-프로판다이올(MPD) 40mole% 로 중합된 고탄성 저융점 고분자를 복합방사하여 섬유를 제조하였다. [High elasticity composite fiber] Dimethyl terephthalate (DMT) 20 mole%, dimethyl isophthalate (DMI) 5 mole%, terephthalic acid (TPA) 75 mole%, 1,4-butanediol (1,4-BD) 20 mole%, polyethylene glycol Fibers were manufactured by composite spinning a highly elastic, low melting point polymer polymerized with 5 mole% (PEG), 35 mole% ethylene glycol (EG), and 40 mole% 2-methyl-1,3-propanediol (MPD).
방사온도 285℃에서 방사속도를 1,000m/min로 방사후 연신비 3.8로 연신후 크림퍼(crimper)를 통해 권축을 부여하여 단섬유 섬도 4De이고, 섬유장 51mm인 섬유를 제조하였다. 이 섬유를 바인더 섬유로써 30 중량%가 되도록 이용하되, 원형 단면 섬유와 혼합하여 열접착(Thermal bonding)으로 부직포를 제조하였다.After spinning at a spinning temperature of 285°C and a spinning speed of 1,000 m/min, the fiber was drawn at a draw ratio of 3.8 and then crimped using a crimper to produce a fiber with a single fiber fineness of 4De and a fiber length of 51mm. This fiber was used as a binder fiber in an amount of 30% by weight, and mixed with circular cross-section fiber to produce a nonwoven fabric by thermal bonding.
비교예 1Comparative Example 1
[기존 저융점 복합섬유] 테레프탈릭에시드(TPA) 100mole%, 에틸렌글리콜(EG) 70mole%, 2-메틸-1,3-프로판다이올(MPD) 30mole%, 중합된 저융점 고분자를 복합방사하여 섬유를 제조하였다. 방사온도 285℃에서 방사속도를 1,000m/min로 방사후 연신비 3.8로 연신후 크림퍼(crimper)를 통해 권축을 부여하여 단섬유 섬도 4De이고, 섬유장 51mm인 섬유를 제조하였다. 이 섬유를 바인더 섬유로써 30 중량%가 되도록 이용하되, 원형 단면 섬유와 혼합하여 열접착(Thermal bonding)으로 부직포를 제조하였다.[Existing low melting point composite fiber] 100 mole% terephthalic acid (TPA), 70 mole% ethylene glycol (EG), 30 mole% 2-methyl-1,3-propanediol (MPD), and composite spinning of polymerized low melting point polymer. Fiber was manufactured. After spinning at a spinning temperature of 285°C and a spinning speed of 1,000 m/min, the fiber was drawn at a draw ratio of 3.8 and then crimped using a crimper to produce a fiber with a single fiber fineness of 4De and a fiber length of 51mm. This fiber was used as a binder fiber in an amount of 30% by weight, and mixed with circular cross-section fiber to produce a nonwoven fabric by thermal bonding.
비교예 2Comparative Example 2
[고탄성 복합섬유] 실시예1의 조건에서 BD를 투입하지 않고 중합된 고탄성 저융점 고분자를 복합방사하여 섬유를 제조하였다. 방사온도 285℃에서 방사속도를 1,000m/min로 방사후 연신비 3.8로 연신후 크림퍼(crimper)를 통해 권축을 부여하여 단섬유 섬도 4De이고, 섬유장 51mm인 섬유를 제조하였다. 이 섬유를 바인더 섬유로써 30 중량%가 되도록 이용하되, 원형 단면 섬유와 혼합하여 열접착(Thermal bonding)으로 부직포를 제조하였다.[High-elasticity composite fiber] Fiber was manufactured by composite spinning a high-elasticity, low-melting-point polymer polymerized under the conditions of Example 1 without adding BD. After spinning at a spinning temperature of 285°C and a spinning speed of 1,000 m/min, the fiber was drawn at a draw ratio of 3.8 and then crimped using a crimper to produce a fiber with a single fiber fineness of 4De and a fiber length of 51mm. This fiber was used as a binder fiber in an amount of 30% by weight, and mixed with circular cross-section fiber to produce a nonwoven fabric by thermal bonding.
비교예 3Comparative Example 3
[고탄성 복합섬유] 실시예1의 조건에서 PEG를 투입하지 않고 중합된 고탄성 저융점 고분자를 복합방사하여 섬유를 제조하였다. 방사온도 285℃에서 방사속도를 1,000m/min로 방사후 연신비 3.8로 연신후 크림퍼(crimper)를 통해 권축을 부여하여 단섬유 섬도 4De이고, 섬유장 51mm인 섬유를 제조하였다. 이 섬유를 바인더 섬유로써 30 중량%가 되도록 이용하되, 원형 단면 섬유와 혼합하여 열접착(Thermal bonding)으로 부직포를 제조하였다.[High-elasticity composite fiber] Fiber was manufactured by composite spinning a high-elasticity, low-melting-point polymer polymerized under the conditions of Example 1 without adding PEG. After spinning at a spinning temperature of 285°C and a spinning speed of 1,000 m/min, the fiber was drawn at a draw ratio of 3.8 and then crimped using a crimper to produce a fiber with a single fiber fineness of 4De and a fiber length of 51mm. This fiber was used as a binder fiber in an amount of 30% by weight, and mixed with circular cross-section fiber to produce a nonwoven fabric by thermal bonding.
가. 영구 압축 변형률go. compression set
KS M 6518에 준하는 장비를 이용하여, 제조된 부직포를 22시간 동안 초기 부직포 두께의 75%까지 압축하고, 압축제거 후 1시간 후의 두께로써 하기 식에 의하여 영구 압축 변형률을 측정하였다. Using equipment that complies with KS M 6518, the manufactured nonwoven fabric was compressed to 75% of the initial nonwoven fabric thickness for 22 hours, and the permanent compression set was measured using the thickness 1 hour after compression removal using the formula below.
* 영구 압축 변형률(%) = (초기 부직포 두께 압축 후 부직포 두께) / (초기 부직포 두께) * 100* Compression set rate (%) = (Initial non-woven thickness Non-woven fabric thickness after compression) / (Initial non-woven thickness) * 100
나. 반복 압축 변형률 me. Cyclic compression strain
자체 평가 방법에 의하여 부직포를 85kgf의 압력으로 30분동안 120회 반복 압축하고, 1시간 후의 두께로써 하기 식에 의하여 반복 압축 변형을 측정하였다. According to the self-evaluation method, the nonwoven fabric was repeatedly compressed 120 times for 30 minutes at a pressure of 85 kgf, and the repeated compression strain was measured using the thickness after 1 hour according to the formula below.
* 반복 압축 변형률(%) = (초기 부직포 두께 압축 후 부직포 두께) / (초기 부직포 두께) * 100* Repeated compression strain (%) = (Initial non-woven thickness Non-woven thickness after compression) / (Initial non-woven thickness) * 100
변형률(%)permanent compression
Strain rate (%)
변형률(%)Repeated compression
Strain rate (%)
실시예1은 비교예1 대비 고탄성 특성의 1,4-부탄디올(1,4-BD), 폴리에틸렌글리콜(PEG)의 단량체가 첨가된 것으로 영구압축 및 반복압축 변형률이 우수한다. Example 1 was prepared by adding monomers of 1,4-butanediol (1,4-BD) and polyethylene glycol (PEG) with high elastic properties compared to Comparative Example 1, and had excellent permanent compression and repeated compression strain.
비교예2는 고탄성 특성의 1,4-부탄디올(1,4-BD)의 단량체가 없을 경우이고, 비교예3은 고탄성 특성의 폴리에틸렌글리콜(PEG)의 단량체만 없을 때에 따른 실시예 1과의 물성에서 차이점이 있다. Comparative Example 2 is the case in which there is no monomer of 1,4-butanediol (1,4-BD) with high elasticity characteristics, and Comparative Example 3 is the physical properties of Example 1 in the absence of only the monomer of polyethylene glycol (PEG) with high elasticity characteristics. There is a difference.
이상에서 설명한 본 발명은 전술한 실시예 및 첨부된 도면에 의해 한정되는 것이 아니고, 본 발명의 기술적 사상을 벗어나지 않는 범위 내에서 여러 가지 치환, 변형 및 변경이 가능함은 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자에게 있어서 명백할 것이다. The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible without departing from the technical spirit of the present invention, as is commonly known in the technical field to which the present invention pertains. It will be clear to those who have the knowledge of.
Claims (3)
상기 복합섬유는 제1성분으로 폴리에스테르계 수지 및 제2성분으로 상기 폴리에스테르계 수지보다 융점이 20℃ 이상 낮은 폴리에스테르계 수지로 형성되되,
상기 제2성분의 폴리에스테르계 수지는 디올(Diol)과 디카르본산(Dicarbonic acid) 또는 유도체, 1,4-부탄디올(1,4-BD), 폴리에틸렌글리콜(PEG)로 구성되며,
상기 디올(Diol)은 에틸렌글리콜(EG) 및 2-메틸-1,3-프로판다이올(MPD)로 구성되고,
상기 디카르본산(Dicarbonic acid) 또는 유도체는 테레프탈릭에시드(TPA), 디메틸테레프탈레이트(DMT) 및 디메틸이소프탈레이트(DMI)로 구성되며,
상기 디카르본산(Dicarbonic acid) 또는 유도체와 디올(Diol)과 에스테르화 반응시키고 그 반응물을 1,4-부탄디올(1,4-BD), 폴리에틸렌글리콜(PEG)과 축중합시켜 완성된 것에 특징이 있는 압축회복력이 우수한 복합섬유.
In composite fibers with excellent compression recovery,
The composite fiber is formed of a polyester resin as a first component and a polyester resin whose melting point is 20°C or more lower than that of the polyester resin as the second component,
The polyester resin of the second component consists of diol, dicarbonic acid or derivatives, 1,4 -butanediol (1,4-BD), and polyethylene glycol (PEG),
The diol consists of ethylene glycol (EG) and 2-methyl-1,3-propanediol (MPD),
The dicarbonic acid or derivative consists of terephthalic acid (TPA), dimethyl terephthalate (DMT), and dimethyl isophthalate (DMI),
It is characterized in that it is completed by esterifying the dicarbonic acid or derivative with diol and condensation polymerization of the reaction product with 1,4-butanediol (1,4-BD) and polyethylene glycol (PEG). A composite fiber with excellent compression recovery.
상기 상기 디카르본산(Dicarbonic acid) 또는 유도체의 구성성분의 함량으로
테레프탈릭에시드(TPA) 50~90몰%, 디메틸테레프탈레이트(DMT) 5~30몰% 및 디메틸이소프탈레이트(DMI) 10~20몰%인 것에 특징이 있는 압축회복력이 우수한 복합섬유.
According to paragraph 1,
The content of the components of the dicarbonic acid or derivative
A composite fiber with excellent compression recovery, characterized by 50 to 90 mol% of terephthalic acid (TPA), 5 to 30 mol% of dimethyl terephthalate (DMT), and 10 to 20 mol% of dimethyl isophthalate (DMI).
상기 복합섬유는 사이드 바이 사이드(side by side) 또는 시스-코어 (sheath-core)인 것으로,
상기 제1성분 및 제2성분이 편심형태의 사이드 바이 사이드 또는
제1성분이 코어부, 제2성분이 시스부인 것에 특징이 있는 압축회복력이 우수한 복합섬유.According to paragraph 1,
The composite fiber is side by side or sheath-core,
The first component and the second component are eccentric side-by-side or
A composite fiber with excellent compression recovery, characterized in that the first component is the core portion and the second component is the sheath portion.
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