CN113322537B - Polyester low stretch yarn and preparation method thereof - Google Patents
Polyester low stretch yarn and preparation method thereof Download PDFInfo
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- CN113322537B CN113322537B CN202110556218.5A CN202110556218A CN113322537B CN 113322537 B CN113322537 B CN 113322537B CN 202110556218 A CN202110556218 A CN 202110556218A CN 113322537 B CN113322537 B CN 113322537B
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- 229920000728 polyester Polymers 0.000 title claims abstract description 130
- 238000002360 preparation method Methods 0.000 title claims abstract description 57
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000002243 precursor Substances 0.000 claims abstract description 37
- 238000010438 heat treatment Methods 0.000 claims abstract description 27
- 238000002156 mixing Methods 0.000 claims abstract description 25
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000003607 modifier Substances 0.000 claims abstract description 18
- XVOUMQNXTGKGMA-OWOJBTEDSA-N (E)-glutaconic acid Chemical compound OC(=O)C\C=C\C(O)=O XVOUMQNXTGKGMA-OWOJBTEDSA-N 0.000 claims abstract description 16
- SNKZJIOFVMKAOJ-UHFFFAOYSA-N 3-Aminopropanesulfonate Chemical compound NCCCS(O)(=O)=O SNKZJIOFVMKAOJ-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000003054 catalyst Substances 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 14
- 238000006068 polycondensation reaction Methods 0.000 claims abstract description 10
- WCVRQHFDJLLWFE-UHFFFAOYSA-N pentane-1,2-diol Chemical compound CCCC(O)CO WCVRQHFDJLLWFE-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000001723 curing Methods 0.000 claims abstract description 4
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 239000003381 stabilizer Substances 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 20
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 20
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 claims description 16
- 239000003795 chemical substances by application Substances 0.000 claims description 16
- XZZNDPSIHUTMOC-UHFFFAOYSA-N triphenyl phosphate Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)(=O)OC1=CC=CC=C1 XZZNDPSIHUTMOC-UHFFFAOYSA-N 0.000 claims description 14
- BGNXCDMCOKJUMV-UHFFFAOYSA-N Tert-Butylhydroquinone Chemical compound CC(C)(C)C1=CC(O)=CC=C1O BGNXCDMCOKJUMV-UHFFFAOYSA-N 0.000 claims description 13
- 229920004933 Terylene® Polymers 0.000 claims description 13
- 239000004250 tert-Butylhydroquinone Substances 0.000 claims description 13
- 235000019281 tert-butylhydroquinone Nutrition 0.000 claims description 13
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 claims description 12
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 10
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 10
- CCJAYIGMMRQRAO-UHFFFAOYSA-N 2-[4-[(2-hydroxyphenyl)methylideneamino]butyliminomethyl]phenol Chemical compound OC1=CC=CC=C1C=NCCCCN=CC1=CC=CC=C1O CCJAYIGMMRQRAO-UHFFFAOYSA-N 0.000 claims description 8
- 239000005711 Benzoic acid Substances 0.000 claims description 8
- 235000010233 benzoic acid Nutrition 0.000 claims description 8
- HVLLSGMXQDNUAL-UHFFFAOYSA-N triphenyl phosphite Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)OC1=CC=CC=C1 HVLLSGMXQDNUAL-UHFFFAOYSA-N 0.000 claims description 8
- PQUCIEFHOVEZAU-UHFFFAOYSA-N Diammonium sulfite Chemical compound [NH4+].[NH4+].[O-]S([O-])=O PQUCIEFHOVEZAU-UHFFFAOYSA-N 0.000 claims description 5
- 239000004166 Lanolin Substances 0.000 claims description 5
- 239000002202 Polyethylene glycol Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 238000002425 crystallisation Methods 0.000 claims description 5
- 230000008025 crystallization Effects 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 229940039717 lanolin Drugs 0.000 claims description 5
- 235000019388 lanolin Nutrition 0.000 claims description 5
- 229920001223 polyethylene glycol Polymers 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 4
- LWIHDJKSTIGBAC-UHFFFAOYSA-K tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 claims description 4
- WSXIMVDZMNWNRF-UHFFFAOYSA-N antimony;ethane-1,2-diol Chemical compound [Sb].OCCO WSXIMVDZMNWNRF-UHFFFAOYSA-N 0.000 claims description 3
- JVLRYPRBKSMEBF-UHFFFAOYSA-K diacetyloxystibanyl acetate Chemical compound [Sb+3].CC([O-])=O.CC([O-])=O.CC([O-])=O JVLRYPRBKSMEBF-UHFFFAOYSA-K 0.000 claims description 3
- 238000002074 melt spinning Methods 0.000 claims description 3
- 238000000048 melt cooling Methods 0.000 claims description 2
- UFTFJSFQGQCHQW-UHFFFAOYSA-N triformin Chemical compound O=COCC(OC=O)COC=O UFTFJSFQGQCHQW-UHFFFAOYSA-N 0.000 claims description 2
- 239000004744 fabric Substances 0.000 abstract description 40
- CNCOEDDPFOAUMB-UHFFFAOYSA-N N-Methylolacrylamide Chemical compound OCNC(=O)C=C CNCOEDDPFOAUMB-UHFFFAOYSA-N 0.000 abstract description 8
- 239000000835 fiber Substances 0.000 abstract description 7
- 238000010521 absorption reaction Methods 0.000 description 25
- 230000035699 permeability Effects 0.000 description 22
- 230000009286 beneficial effect Effects 0.000 description 11
- 238000012360 testing method Methods 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 9
- 238000009792 diffusion process Methods 0.000 description 8
- 229920004934 Dacron® Polymers 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- 239000004753 textile Substances 0.000 description 6
- 239000012209 synthetic fiber Substances 0.000 description 5
- 229920002994 synthetic fiber Polymers 0.000 description 5
- 239000000654 additive Substances 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 4
- 230000002195 synergetic effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000009940 knitting Methods 0.000 description 3
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- WOZVHXUHUFLZGK-UHFFFAOYSA-N dimethyl terephthalate Chemical compound COC(=O)C1=CC=C(C(=O)OC)C=C1 WOZVHXUHUFLZGK-UHFFFAOYSA-N 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000009941 weaving Methods 0.000 description 2
- 241001589086 Bellapiscis medius Species 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- BTVWZWFKMIUSGS-UHFFFAOYSA-N dimethylethyleneglycol Natural products CC(C)(O)CO BTVWZWFKMIUSGS-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 150000002148 esters Chemical group 0.000 description 1
- 238000013100 final test Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000006076 specific stabilizer Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- ISIJQEHRDSCQIU-UHFFFAOYSA-N tert-butyl 2,7-diazaspiro[4.5]decane-7-carboxylate Chemical group C1N(C(=O)OC(C)(C)C)CCCC11CNCC1 ISIJQEHRDSCQIU-UHFFFAOYSA-N 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
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/78—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products
- D01F6/84—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products from copolyesters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/16—Dicarboxylic acids and dihydroxy compounds
- C08G63/18—Dicarboxylic acids and dihydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
- C08G63/181—Acids containing aromatic rings
- C08G63/183—Terephthalic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/91—Polymers modified by chemical after-treatment
- C08G63/914—Polymers modified by chemical after-treatment derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/916—Dicarboxylic acids and dihydroxy compounds
-
- 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
- D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
- D01D10/02—Heat treatment
-
- 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
- D01D5/08—Melt spinning methods
-
- 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
- D01D5/12—Stretch-spinning methods
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
- D01F6/92—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
- D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
- D02G1/0206—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by false-twisting
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/224—Esters of carboxylic acids; Esters of carbonic acid
- D06M13/2243—Mono-, di-, or triglycerides
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/244—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus
- D06M13/282—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus with compounds containing phosphorus
- D06M13/292—Mono-, di- or triesters of phosphoric or phosphorous acids; Salts thereof
- D06M13/295—Mono-, di- or triesters of phosphoric or phosphorous acids; Salts thereof containing polyglycol moieties; containing neopentyl moieties
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/53—Polyethers
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/32—Polyesters
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
The application relates to the technical field of polyester fibers, and particularly discloses a polyester low stretch yarn and a preparation method thereof. The preparation method of the polyester low stretch yarn comprises the following steps: step 1) preparation of modified polyester chips: step 1-1) mixing terephthalic acid, ethylene glycol, 1, 2-pentanediol and a catalyst, heating to 260 ℃ and 280 ℃, and reacting for 3-5h to obtain a mixture; step 1-2) mixing N-methylol acrylamide, 3-aminopropane sulfonic acid and glutaconic acid, heating to 80-120 ℃, and preserving heat for 1-2 hours to obtain a modifier; step 1-3) mixing the mixture and a modifier, heating to 260-270 ℃, carrying out polycondensation reaction, discharging, curing and dicing to obtain modified polyester chips; step 2) preparing pre-oriented yarn precursor; step 3), preparing polyester low-stretch yarn precursor; and 4) carrying out post-treatment on the polyester low-stretch yarn precursor. The polyester low stretch yarn has more excellent performance, and the fabric made of the polyester low stretch yarn has more excellent hygroscopicity, so that the comfort of wearing a human body is improved.
Description
Technical Field
The application relates to the technical field of polyester fibers, in particular to a terylene low stretch yarn and a preparation method thereof.
Background
The polyester fiber is known as polyethylene terephthalate fiber, polyester fiber for short. The polyester fiber is a synthetic fiber made by spinning and post-treatment of synthetic high polymer prepared by esterification or ester exchange and polycondensation reaction of terephthalic acid or dimethyl terephthalate and ethylene glycol, and is an important textile material and widely applied to the textile industry.
The terylene low stretch yarn is also called terylene low stretch yarn, is a type of textured yarn of terylene chemical fiber, takes polyester slices as raw materials, adopts high-speed spun terylene pre-oriented yarn as raw yarn, and is processed by drafting and false twisting.
In view of the above-mentioned related technologies, the inventor believes that the moisture absorption of the clothes woven by the polyester low stretch yarn is poor, and discomfort is easily brought to people, and needs to be further improved.
Disclosure of Invention
In order to improve the moisture absorption of polyester low stretch yarn woven clothes, the application provides the polyester low stretch yarn and the preparation method thereof.
In a first aspect, the application provides a preparation method of a polyester low stretch yarn, which adopts the following technical scheme:
a preparation method of polyester low stretch yarns comprises the following steps:
step 1) preparing modified polyester chips:
step 1-1) mixing 10-15 parts by mass of terephthalic acid, 10-18 parts by mass of ethylene glycol, 5-10 parts by mass of 1, 2-pentanediol and 1-2.5 parts by mass of a catalyst, heating to 260-280 ℃, and reacting for 3-5 hours to obtain a mixture;
step 1-2) mixing 1-1.5 parts by mass of N-methylolacrylamide, 0.8-1.2 parts by mass of 3-aminopropanesulfonic acid and 0.8-1.5 parts by mass of glutaconic acid, heating to 80-120 ℃, and preserving heat for 1-2 hours to obtain a modifier;
step 1-3) mixing 15-25 parts by mass of the mixture and 6-12 parts by mass of the modifier, heating to 260-270 ℃, carrying out polycondensation reaction, discharging, curing and dicing to obtain modified polyester chips;
step 2) preparing pre-oriented yarn precursors:
heating the modified polyester chip to the temperature of 120-130 ℃, performing pre-crystallization for 2-3h, continuously heating to the temperature of 140-150 ℃, drying for 3-5h, performing melt spinning, and cooling to obtain pre-oriented yarn precursor;
step 3), preparing the terylene low stretch yarn precursor:
drafting the pre-oriented yarn precursor at 90-95 ℃, then drafting, at 65-70 ℃, cooling, false twisting and guiding out to obtain the terylene low-elasticity yarn precursor;
step 4), post-treatment of polyester low-stretch yarn precursors:
step 4-1) dissolving 1-5 parts by mass of antistatic treatment agent in 20-100 parts by mass of water, mixing, heating to 60-65 ℃, and preserving heat for 20-25min to obtain treatment liquid;
and 4-2) placing the polyester low-stretch yarn precursor in an environment with the temperature of 50-60 ℃ and the relative humidity of 60-70%, standing for 1-2h, spraying a treatment solution, placing in an environment with the temperature of 80-85 ℃ and the relative humidity of 45-50%, and standing for 0.5-1h to obtain the polyester low-stretch yarn.
By adopting the technical scheme, the N-hydroxymethyl acrylamide, the 3-aminopropane sulfonic acid and the glutaconic acid are compounded to form the modifier, and the modifier reacts with the terephthalic acid, the ethylene glycol and the 1, 2-pentanediol to obtain the modified polyester chip when the polyester chip is prepared, so that the polyester low-stretch yarn prepared from the modified polyester chip has more excellent performance, and the fabric prepared from the polyester low-stretch yarn has more excellent hygroscopicity, reduces stuffiness feeling when the fabric is worn, and is beneficial to improving the wearing comfort of a human body.
The antistatic treatment agent is used for post-treating the polyester low-stretch yarn precursor, so that the polyester low-stretch yarn precursor has more excellent performance, the polyester low-stretch yarn is endowed with the characteristics of smoothness and softness, the spinnability of the polyester low-stretch yarn is better, and the polyester low-stretch yarn is not easy to generate electrostatic influence after being woven.
Preferably, the catalyst comprises one or more of antimony trioxide, ethylene glycol antimony and antimony acetate.
By adopting the technical scheme, one or more of antimony trioxide, ethylene glycol antimony and antimony acetate are used as a catalyst, so that the crystallization speed of the prepared modified polyester chip is higher than that of other catalytic systems, the synthesis efficiency of the prepared modified polyester chip can be improved, the full reaction among raw materials is facilitated, the performance of the terylene low stretch yarn is favorably improved, the fabric prepared from the terylene low stretch yarn has more excellent hygroscopicity, and the stuffy condition is not easy to generate when the fabric is worn.
Preferably, in the step 1-1), 1-2.5 parts by mass of a stabilizer is also added.
By adopting the technical scheme, the stabilizer is added when the modified polyester chip is prepared, so that the stability of the modified polyester is further improved, the degradation in the polycondensation reaction process is inhibited, the full reaction of all raw materials is promoted, the performance of the polyester low stretch yarn is better improved, and the fabric prepared from the polyester low stretch yarn has more excellent moisture absorption.
Preferably, the stabilizer comprises one or more of ammonium sulfite, triphenyl phosphate, triphenyl phosphite and tert-butyl hydroquinone.
By adopting the technical scheme, one or more of ammonium sulfite, triphenyl phosphate, triphenyl phosphite and tert-butyl hydroquinone are used as the stabilizer to promote the synergistic cooperation among N-hydroxymethyl acrylamide, 3-aminopropane sulfonic acid and glutaconic acid, so that the modified polyester chip has better stability during preparation, the performance of the polyester low stretch yarn is improved, and the prepared fabric has more excellent hygroscopicity.
Preferably, the stabilizer is triphenyl phosphate, tert-butyl hydroquinone in a ratio of 2: (2-3) by mass ratio.
By adopting the technical scheme, the triphenyl phosphate and the tert-butyl hydroquinone have a synergistic effect, which is beneficial to promoting the mutual reaction of all raw materials, and simultaneously the stability of the reaction process is kept, so that the modifier can fully react with the mixture during the polycondensation reaction, the quality of the modified polyester chip is further improved, the performance of the polyester low stretch yarn is more excellent, the prepared fabric has more excellent hygroscopicity, and meanwhile, the triphenyl phosphate, the tert-butyl hydroquinone, the N-hydroxymethyl acrylamide, the 3-aminopropane sulfonic acid and the glutaconic acid have a synergistic promotion effect, so that the fabric prepared from the polyester low stretch yarn has a better moisture permeation effect, absorbed water vapor molecules are emitted out, and the discomfort of sultriness when the fabric is worn is further reduced.
Preferably, in the step 1-2), 0.5-0.8 part by mass of benzoic acid is also added.
By adopting the technical scheme, the benzoic acid is beneficial to promoting the synergistic cooperation of the N-hydroxymethyl acrylamide, the 3-aminopropane sulfonic acid and the glutaconic acid, and is beneficial to improving the performance of the polyester low-stretch yarns, so that the fabric prepared from the polyester low-stretch yarns has better moisture absorption and moisture permeability.
Preferably, the antistatic treatment agent comprises the following components in parts by mass:
5-10 parts of ethoxylated lanolin;
5-8 parts of fatty alcohol-polyoxyethylene ether;
1-5 parts of fatty alcohol-polyoxyethylene ether phosphate potassium salt;
10-15 parts of triglyceride;
10-20 parts of polyethylene glycol;
30-40 parts of water.
Through adopting above-mentioned technical scheme, adopt antistatic finishing agent to carry out the aftertreatment to the low stretch yarn precursor of dacron, form the protection film on the low stretch yarn precursor surface of dacron, help improving the spinnability of the low stretch yarn precursor of dacron in the synthetic fiber, make the synthetic fiber have good hygroscopicity, and still have good antistatic properties when low temperature, at the in-process of weaving the fabric, the low stretch yarn of dacron is when interweaving, direct contact is the protection film on the low stretch yarn surface of dacron, adjacent dacron is low stretch yarn and is linked to each other by the protection film, make the fabric of preparation have more excellent gas permeability, comfort when increasing the dress clothing.
In a second aspect, the present application provides a polyester low stretch yarn, which adopts the following technical scheme:
the polyester low stretch yarn is prepared by adopting the preparation method of the polyester low stretch yarn.
By adopting the technical scheme, N-hydroxymethyl acrylamide, 3-aminopropane sulfonic acid and glutaconic acid are mixed firstly to form the modifier, then the modifier is subjected to polycondensation reaction with terephthalic acid, ethylene glycol and 1, 2-pentanediol to obtain polyester chips, and meanwhile, the antistatic treatment agent is adopted to carry out aftertreatment on the polyester low stretch yarn precursor, so that the prepared polyester low stretch yarn has good hygroscopicity and good antistatic property at low temperature, the prepared fabric has more excellent air permeability, and the comfort when the fabric is worn is improved.
In summary, the present application has the following beneficial effects:
1. according to the preparation method, when the polyester chip is prepared, the modifier compounded by N-hydroxymethyl acrylamide, 3-aminopropane sulfonic acid and glutaconic acid reacts with terephthalic acid, ethylene glycol and 1, 2-pentanediol to obtain the modified polyester chip, the prepared polyester low-stretch yarn has more excellent performance, and a fabric prepared from the polyester low-stretch yarn has more excellent moisture absorption and is beneficial to improving the comfort of a human body wearing clothes.
2. The stabilizing agent is preferably added during preparation of the modified polyester chip, so that the stability of the modified polyester is further improved, the degradation in the polycondensation reaction process is inhibited, the full reaction of all raw materials is promoted, the performance of the polyester low stretch yarns is better improved, and the fabric prepared from the polyester low stretch yarns has more excellent moisture absorption.
3. The polyester low stretch yarn protofilament is preferably subjected to post-treatment by the antistatic treatment agent, so that a protective film is formed on the surface of the polyester low stretch yarn protofilament, spinnability of the polyester low stretch yarn is improved in synthetic fibers, the synthetic fibers have good hygroscopicity, good antistatic property is still provided at low temperature, and in the process of weaving fabrics, the prepared fabrics have more excellent air permeability, and the wearing comfort is improved.
Detailed Description
The present application will be described in further detail with reference to examples. The source of the raw materials for the examples and comparative examples of this application are detailed in table 1.
TABLE 1
Example 1
A preparation method of polyester low stretch yarns comprises the following steps:
step 1) preparing modified polyester chips:
step 1-1) adding 10kg of terephthalic acid, 10kg of ethylene glycol, 5kg of 1, 2-pentanediol and 1kg of catalyst into a first reaction kettle, stirring at the speed of 500r/min for 10min, heating to 260 ℃, and reacting for 5h to obtain a mixture;
step 1-2) adding 1kg of N-methylolacrylamide, 0.8kg of 3-aminopropanesulfonic acid and 0.8kg of glutaconic acid into a second reaction kettle, mixing, heating to 80 ℃, and keeping the temperature for 2 hours to obtain a modifier;
step 1-3) adding 15kg of the mixture and 6kg of the modifier into a polycondensation reaction kettle, mixing, heating to 260 ℃, carrying out polycondensation reaction under the pressure of 1400Pa, discharging, curing at 280 ℃ for 10min, and pelletizing to obtain modified polyester chips;
step 2) preparing pre-oriented yarn precursors:
heating the modified polyester chip to 120 ℃, performing pre-crystallization for 3 hours, continuously heating to 140 ℃, drying for 5 hours, performing melt spinning at 360 ℃, and cooling to room temperature to obtain pre-oriented yarn precursor;
step 3), preparing the terylene low stretch yarn protofilament:
the method comprises the following steps of (1) connecting pre-oriented yarn precursor into a yarn guide, feeding the pre-oriented yarn precursor into a first roller for drafting, feeding the pre-oriented yarn precursor into a first hot box after drafting, controlling the temperature of the first hot box to be 90 ℃, then feeding the pre-oriented yarn precursor into a second roller for drafting, feeding the pre-oriented yarn precursor into a second hot box after drafting, controlling the temperature of the second hot box to be 65 ℃, then cooling the pre-oriented yarn precursor to room temperature through a cooling plate, then performing false twisting through a false twister, and leading out the pre-oriented yarn precursor from a second roller to obtain the terylene low-elasticity yarn precursor;
step 4), post-treatment of polyester low-stretch yarn precursors:
step 4-1) dissolving 1kg of antistatic treatment agent in 20kg of water, mixing, heating to 60 ℃, and keeping the temperature for 25min to prepare treatment liquid;
and 4-2) placing the polyester low-stretch yarn precursor in an environment with the temperature of 50 ℃ and the relative humidity of 70%, standing for 2h, spraying a treatment solution, placing in an environment with the temperature of 80 ℃ and the relative humidity of 50%, and standing for 1h to obtain the polyester low-stretch yarn.
In this embodiment, the catalyst is alumina.
Example 2
Compared with example 1, the difference is only that:
in the step 1-1), the addition amount of terephthalic acid is 15kg, the addition amount of ethylene glycol is 18kg, the addition amount of 1, 2-pentanediol is 10kg, the addition amount of a catalyst is 2.5kg, heating is carried out to 280 ℃, and reaction is carried out for 3 hours;
in the step 1-2), the addition amount of N-hydroxymethyl acrylamide is 1.5kg, the addition amount of 3-aminopropane sulfonic acid is 1.2kg, the addition amount of glutaconic acid is 1.5kg, heating is carried out to 120 ℃, and heat preservation is carried out for 1 h;
in the step 1-3), the adding amount of the mixture is 25kg, the adding amount of the modifier is 12kg, and the mixture is heated to 270 ℃;
in the step 2), heating to 130 ℃, keeping the crystallization time at 2h, continuing heating to 150 ℃, and drying for 3 h;
in the step 3), the temperature of the first hot box is controlled to be 95 ℃, and the temperature of the second hot box is controlled to be 70 ℃;
in the step 4-1), the additive amount of the antistatic treatment agent is 5kg, the additive amount of water is 100kg, the mixture is heated to 65 ℃, and the temperature is kept for 20 min;
in the step 4-2), placing the polyester low-stretch yarn precursor in an environment with the temperature of 60 ℃ and the relative humidity of 70% for standing for 1h, spraying the treatment liquid, and placing in an environment with the temperature of 85 ℃ and the relative humidity of 45% for standing for 0.5 h.
Example 3
Compared with example 1, the only difference is that:
in the step 1-1), the addition amount of terephthalic acid is 12kg, the addition amount of ethylene glycol is 14kg, the addition amount of 1, 2-pentanediol is 7kg, the addition amount of a catalyst is 2kg, heating is carried out to 270 ℃, and reaction is carried out for 4 hours;
in the step 1-2), the adding amount of N-methylol acrylamide is 1.2kg, the adding amount of 3-aminopropane sulfonic acid is 1kg, the adding amount of glutaconic acid is 1.1kg, heating is carried out to 100 ℃, and heat preservation is carried out for 1.5 h;
in the step 1-3), the addition amount of the mixture is 25kg, and the addition amount of the modifier is 12 kg;
in the step 4-1), the additive amount of the antistatic treatment agent is 3kg, the additive amount of water is 60kg, the mixture is heated to 62 ℃, and the temperature is kept for 22 min.
Example 4
Compared with example 3, the difference is only that:
the catalyst is antimony trioxide.
Example 5
Compared with example 3, the difference is only that:
in the step 1-1), 1kg of stabilizer is also added.
In this example, the stabilizer is phosphorous acid.
Example 6
Compared with example 5, the only difference is that:
the amount of the stabilizer added was 2.5 kg.
Example 7
Compared with example 5, the difference is only that:
the stabilizer is formed by mixing 0.5kg of ammonium sulfite and 0.5kg of triphenyl phosphate.
Example 8
Compared with example 5, the difference is only that:
the stabilizer is formed by mixing 0.5kg of triphenyl phosphate and 0.5kg of tert-butyl hydroquinone.
Example 9
Compared with example 5, the difference is only that:
the stabilizer is formed by mixing 0.4kg of triphenyl phosphate and 0.6kg of tert-butyl hydroquinone.
Example 10
Compared with example 5, the difference is only that:
the stabilizer is formed by mixing 0.5kg of triphenyl phosphite and 0.5kg of tertiary butyl hydroquinone.
Example 11
Compared with example 3, the difference is only that:
in the step 1-2), 0.5kg of benzoic acid is also added.
Example 12
Compared with example 3, the difference is only that:
in the step 1-2), 0.8kg of benzoic acid is also added.
Example 13
Compared with example 3, the difference is only that:
in this example, the antistatic treatment agent was prepared by mixing 5kg of ethoxylated lanolin, 5kg of fatty alcohol-polyoxyethylene ether, 1kg of potassium fatty alcohol-polyoxyethylene ether phosphate, 10kg of triethylene glycol, 10kg of polyethylene glycol, and 30kg of water.
Example 14
Compared with example 3, the difference is only that:
the antistatic treatment agent is prepared by mixing 10kg of ethoxylated lanolin, 8kg of fatty alcohol-polyoxyethylene ether, 5kg of fatty alcohol-polyoxyethylene ether phosphate potassium salt, 15kg of triethylene glycol, 20kg of polyethylene glycol and 40kg of water.
Example 15
Compared with example 3, the only difference is that:
in the step 1-1), the catalyst is antimony trioxide.
In the step 1-1), 1kg of stabilizer is also added.
In this example, the stabilizer was formed by mixing 0.5kg of triphenyl phosphate and 0.5kg of tert-butyl hydroquinone;
in the step 1-2), 0.5kg of benzoic acid is also added;
in the step 4-1), the antistatic treatment agent is prepared by mixing 5kg of ethoxylated lanolin, 5kg of fatty alcohol-polyoxyethylene ether, 1kg of fatty alcohol-polyoxyethylene ether phosphate potassium salt, 10kg of triethylene glycol, 10kg of polyethylene glycol and 30kg of water.
Comparative example 1
Compared with example 3, the difference is only that:
equal amount of ethylene glycol is used to replace N-methylol acrylamide, 3-amino propane sulfonic acid and glutaconic acid.
Comparative example 2
Compared with example 3, the difference is only that:
equal amounts of ethylene glycol were used instead of glutaconic acid.
Comparative example 3
Compared with example 3, the difference is only that:
the same amount of ethylene glycol was used instead of N-methylolacrylamide.
Comparative example 4
Compared with example 3, the difference is only that:
equal amounts of ethylene glycol were used instead of 3-aminopropane sulfonic acid.
Preparation example 1
The polyester low-stretch yarn prepared in example 1 was spun, the yarn count was 40S, the yarn twist factor was 330, and the loop length of the yarn was 200MM/100 stitches, and the obtained yarn was knitted into a greige cloth using a weft-knitting circular weft knitting interlock knitting machine.
Preparation examples 2 to 19
Compared with preparation example 1, the difference is only that:
preparation example 2 the polyester drawn textured yarn prepared in example 2 was used;
preparation example 3 the polyester drawn textured yarn prepared in example 3 was used;
preparation example 4 the polyester drawn textured yarn prepared in example 4 was used;
preparation example 5 the polyester drawn textured yarn prepared in example 5 was used;
preparation example 6 used the polyester low stretch yarn prepared in example 6;
preparation example 7 used the polyester low stretch yarn prepared in example 7;
preparation example 8 the polyester low stretch yarn prepared in example 8 was used;
preparation example 9 used the polyester low stretch yarn prepared in example 9;
preparation example 10 the polyester drawn textured yarn prepared in example 10 was used;
preparation example 11 used the polyester low stretch yarn prepared in example 11;
preparation example 12 the polyester drawn textured yarn prepared in example 12 was used;
preparation example 13 used the polyester low stretch yarn prepared in example 13;
preparation example 14 used the polyester drawn textured yarn prepared in example 14;
preparation example 15 the polyester low stretch yarn prepared in example 15 was used;
preparation example 16 used the polyester drawn textured yarn prepared in comparative example 1;
preparation example 17 used the polyester low stretch yarn prepared in comparative example 2;
preparation example 18 used the polyester drawn textured yarn prepared in comparative example 3;
preparation example 19 used the polyester drawn textured yarn prepared in comparative example 4.
Experiment 1
Moisture absorption test
According to GB/T21655.1-2008, evaluation of moisture absorption quick drying of textiles part 1: the moisture absorption performance of the gray cloth prepared in preparation examples 1 to 19 was tested by the single combination test method, and the higher the water absorption (%) was, the shorter the drip diffusion time(s) was, the higher the wicking height (mm) was, the better the moisture absorption was.
Experiment 2
Moisture permeability test
According to GB/T12704.1-2009 part 1 of textile fabric moisture permeability test method: wet absorption method for testing moisture permeability of the gray cloth prepared in preparation examples 1-19, the test conditions in group a) are selected, the test time is 1h, the test is performed in parallel with group 5, the obtained moisture permeability is averaged to be used as the final test result, and the greater the moisture permeability (g/(m2 & 24h), the better the moisture permeability.
Experiment 3
Air permeability test
The gray cloth prepared in preparation examples 1-19 was subjected to air permeability testing according to GB/T5453-1997 textile fabric air permeability determination, which was performed 3 times in parallel, and the final result was averaged to obtain the air permeability (%), with higher air permeability and better air permeability.
Experiment 4
Antistatic test
According to GB/T12703.2-2009, evaluation of textile Electrostatic Properties part 2: charge surface density antistatic test was performed on the base fabrics prepared in preparation examples 1 to 19, and the smaller the charge surface density (μ C/square meter), the better the antistatic property.
The assay data for experiment 1 is detailed in table 2.
The detection data of experiments 2-4 are detailed in Table 3.
TABLE 2
TABLE 3
According to the data in table 2, the data in preparation examples 16 to 19 are respectively compared with the data in preparation example 3, and the modifier compounded by N-methylolacrylamide, 3-aminopropanesulfonic acid and glutaconic acid is added when the modified polyester chip is prepared, so that the water absorption rate and the wicking height of the prepared gray cloth are obviously increased, and the dripping diffusion time is obviously reduced, which indicates that the modifier compounded by N-methylolacrylamide, 3-aminopropanesulfonic acid and glutaconic acid is helpful for improving the performance of the polyester low stretch yarn when the modified polyester chip is prepared, so that the fabric prepared from the polyester low stretch yarn has better hygroscopicity, and has no obvious enhancement effect if any substance is lacked.
According to the data comparison between the preparation example 4 and the preparation example 3 in table 2, the catalyst added in the preparation of the modified polyester chip is antimony trioxide, the water absorption rate and the wicking height of the prepared gray cloth are increased, the dripping water diffusion time is reduced, the specific catalyst is adopted to improve the performance of the polyester low stretch yarn, and the moisture absorption of the fabric prepared from the polyester low stretch yarn is improved to a certain extent.
According to the data in table 2, the comparison between the preparation examples 5 and 6 and the data in the preparation example 3 shows that the stabilizer is added during the preparation of the modified polyester chip, the water absorption rate and the wicking height of the gray cloth are increased, the drip diffusion time is reduced, and the addition of the stabilizer in a specific proportion is helpful for improving the performance of the polyester low stretch yarn and improving the moisture absorption of the fabric prepared from the polyester low stretch yarn to a certain extent.
According to the data comparison of the preparation examples 7 and 3 in table 2, the adopted stabilizer is formed by mixing ammonium sulfite and triphenyl phosphate, the water absorption rate and wicking height of the prepared gray cloth are increased, the dripping water diffusion time is reduced, the adoption of the specific stabilizer is beneficial to improving the performance of the polyester low stretch yarn, and is beneficial to improving the moisture absorption of the fabric prepared from the polyester low stretch yarn to a certain extent.
According to the data in tables 2 and 3, the data in preparation examples 8 to 10 are compared with the data in preparation example 3, respectively, the adopted stabilizer is formed by mixing triphenyl phosphate and tert-butyl hydroquinone in a specific ratio, the water absorption rate, the wicking height and the moisture permeability of the prepared gray cloth are increased, the dripping water diffusion time is reduced, and the stabilizer formed by mixing triphenyl phosphate and tert-butyl hydroquinone in a specific ratio is beneficial to improving the performance of the polyester low stretch yarn and improving the moisture absorption and moisture permeability of the fabric prepared from the polyester low stretch yarn to a certain extent.
According to the data in table 2 and table 3, the comparison between the data in preparation examples 11 and 12 and the data in preparation example 3 respectively shows that benzoic acid is further added when preparing the modified polyester chip, the water absorption rate, the wicking height and the moisture permeability of the prepared gray cloth are increased, the water dropping diffusion time is reduced, and the benzoic acid is helpful for improving the performance of the polyester low stretch yarn and is helpful for improving the moisture absorption and moisture permeability of the fabric prepared from the polyester low stretch yarn to a certain extent.
According to the data in table 2 and table 3, comparing the data in preparation examples 13 and 14 with the data in preparation example 3, respectively, the polyester low-stretch yarn precursor is treated by using the specific antistatic treatment agent, so that the water absorption rate, wicking height and air permeability of the prepared gray cloth are increased, the water-dripping diffusion time and the charge surface density are reduced, and the specific antistatic treatment agent is beneficial to improving the performance of the polyester low-stretch yarn, is beneficial to improving the moisture absorption and air permeability of the fabric prepared from the polyester low-stretch yarn to a certain extent, and has certain antistatic property.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (8)
1. A preparation method of polyester low stretch yarn is characterized by comprising the following steps: the method comprises the following steps:
step 1) preparation of modified polyester chips:
step 1-1) mixing 10-15 parts by mass of terephthalic acid, 10-18 parts by mass of ethylene glycol, 5-10 parts by mass of 1, 2-pentanediol and 1-2.5 parts by mass of a catalyst, heating to 260-280 ℃, and reacting for 3-5 hours to obtain a mixture;
step 1-2) mixing 1-1.5 parts by mass of N-hydroxymethyl acrylamide, 0.8-1.2 parts by mass of 3-aminopropanesulfonic acid and 0.8-1.5 parts by mass of glutaconic acid, heating to 80-120 ℃, and preserving heat for 1-2 hours to obtain a modifier;
step 1-3) mixing 15-25 parts by mass of the mixture and 6-12 parts by mass of the modifier, heating to 260-270 ℃, carrying out polycondensation reaction, discharging, curing and dicing to obtain modified polyester chips;
step 2) preparing pre-oriented yarn precursors:
heating the modified polyester chips to the temperature of 120-130 ℃, performing pre-crystallization for 2-3h, continuously heating to the temperature of 140-150 ℃, drying for 3-5h, performing melt spinning, and cooling to obtain pre-oriented yarn precursors;
step 3), preparing the terylene low stretch yarn precursor:
drafting the pre-oriented yarn precursor at 90-95 ℃, then drafting, at 65-70 ℃, cooling, false twisting and guiding out to obtain the terylene low-elasticity yarn precursor;
step 4), post-treatment of polyester low-stretch yarn precursors:
step 4-1) dissolving 1-5 parts by mass of antistatic treatment agent in 20-100 parts by mass of water, mixing, heating to 60-65 ℃, and preserving heat for 20-25min to obtain treatment liquid;
and 4-2) placing the polyester low-stretch yarn precursor in an environment with the temperature of 50-60 ℃ and the relative humidity of 60-70%, standing for 1-2h, spraying a treatment solution, placing in an environment with the temperature of 80-85 ℃ and the relative humidity of 45-50%, and standing for 0.5-1h to obtain the polyester low-stretch yarn.
2. The method for preparing the polyester drawn textured yarn as claimed in claim 1, wherein the method comprises the following steps: the catalyst comprises one or more of antimony trioxide, ethylene glycol antimony and antimony acetate.
3. The method for preparing the polyester drawn textured yarn as claimed in claim 1, wherein the method comprises the following steps: in the step 1-1), 1-2.5 parts by mass of a stabilizer is also added.
4. The method for preparing the polyester drawn textured yarn as claimed in claim 3, wherein the method comprises the following steps: the stabilizer comprises one or more of ammonium sulfite, triphenyl phosphate, triphenyl phosphite and tert-butyl hydroquinone.
5. The method for preparing the polyester drawn textured yarn as claimed in claim 4, wherein the method comprises the following steps: the stabilizer is prepared from triphenyl phosphate and tert-butyl hydroquinone according to the weight ratio of 2: (2-3) by mass ratio.
6. The method for preparing the polyester drawn textured yarn according to any one of claims 1 to 2, wherein the method comprises the following steps: in the step 1-2), 0.5-0.8 part by mass of benzoic acid is also added.
7. The method for preparing the polyester drawn textured yarn according to any one of claims 1 to 2, wherein the method comprises the following steps: the antistatic treatment agent comprises the following components in parts by mass:
5-10 parts of ethoxylated lanolin;
5-8 parts of fatty alcohol-polyoxyethylene ether;
1-5 parts of fatty alcohol-polyoxyethylene ether phosphate potassium salt;
10-15 parts of triglyceride;
10-20 parts of polyethylene glycol;
30-40 parts of water.
8. The polyester low stretch yarn is characterized in that: the polyester drawn textured yarn is prepared by the method for preparing the polyester drawn textured yarn as claimed in any one of claims 1 to 7.
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| CN105229077A (en) * | 2013-05-21 | 2016-01-06 | 信越聚合物株式会社 | Electroconductive polymer dispersion liquid and conductive coating |
| CN110158186A (en) * | 2019-05-20 | 2019-08-23 | 安徽东锦资源再生科技有限公司 | The processing method that a kind of 3D flies knitted fabric terylene thermo-fuse |
| CN110952167A (en) * | 2019-12-07 | 2020-04-03 | 杭州东南纺织有限公司 | Method for manufacturing different-shrinkage polyester low-stretch yarns |
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| CN105229077A (en) * | 2013-05-21 | 2016-01-06 | 信越聚合物株式会社 | Electroconductive polymer dispersion liquid and conductive coating |
| CN110158186A (en) * | 2019-05-20 | 2019-08-23 | 安徽东锦资源再生科技有限公司 | The processing method that a kind of 3D flies knitted fabric terylene thermo-fuse |
| CN110952167A (en) * | 2019-12-07 | 2020-04-03 | 杭州东南纺织有限公司 | Method for manufacturing different-shrinkage polyester low-stretch yarns |
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