CN117344435B - High-elasticity antibacterial fabric and preparation method thereof - Google Patents
High-elasticity antibacterial fabric and preparation method thereof Download PDFInfo
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- CN117344435B CN117344435B CN202311352823.6A CN202311352823A CN117344435B CN 117344435 B CN117344435 B CN 117344435B CN 202311352823 A CN202311352823 A CN 202311352823A CN 117344435 B CN117344435 B CN 117344435B
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- 239000004744 fabric Substances 0.000 title claims abstract description 59
- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 45
- 238000002360 preparation method Methods 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title description 2
- 229920006306 polyurethane fiber Polymers 0.000 claims abstract description 49
- 238000002156 mixing Methods 0.000 claims abstract description 45
- 229920005749 polyurethane resin Polymers 0.000 claims abstract description 45
- 238000009987 spinning Methods 0.000 claims abstract description 40
- 239000000835 fiber Substances 0.000 claims abstract description 23
- 239000000203 mixture Substances 0.000 claims abstract description 21
- 229920000728 polyester Polymers 0.000 claims abstract description 20
- 238000009940 knitting Methods 0.000 claims abstract description 10
- 238000009941 weaving Methods 0.000 claims abstract description 4
- 238000006243 chemical reaction Methods 0.000 claims description 59
- 238000003756 stirring Methods 0.000 claims description 44
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 40
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 36
- 229920000734 polysilsesquioxane polymer Polymers 0.000 claims description 35
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 33
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 30
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 30
- 239000005058 Isophorone diisocyanate Substances 0.000 claims description 29
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 claims description 29
- 125000003396 thiol group Chemical group [H]S* 0.000 claims description 29
- 239000003054 catalyst Substances 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 18
- 229920001730 Moisture cure polyurethane Polymers 0.000 claims description 17
- 229920001451 polypropylene glycol Polymers 0.000 claims description 17
- 238000005303 weighing Methods 0.000 claims description 15
- 239000002904 solvent Substances 0.000 claims description 14
- 238000004140 cleaning Methods 0.000 claims description 13
- PTBDIHRZYDMNKB-UHFFFAOYSA-N 2,2-Bis(hydroxymethyl)propionic acid Chemical compound OCC(C)(CO)C(O)=O PTBDIHRZYDMNKB-UHFFFAOYSA-N 0.000 claims description 12
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 12
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 12
- 239000012975 dibutyltin dilaurate Substances 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 12
- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical compound [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 11
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 claims description 10
- UUEWCQRISZBELL-UHFFFAOYSA-N 3-trimethoxysilylpropane-1-thiol Chemical compound CO[Si](OC)(OC)CCCS UUEWCQRISZBELL-UHFFFAOYSA-N 0.000 claims description 10
- BFXIKLCIZHOAAZ-UHFFFAOYSA-N methyltrimethoxysilane Chemical compound CO[Si](C)(OC)OC BFXIKLCIZHOAAZ-UHFFFAOYSA-N 0.000 claims description 10
- 238000007493 shaping process Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 150000002009 diols Chemical class 0.000 claims description 9
- -1 polyoxypropylene Polymers 0.000 claims description 9
- 239000007921 spray Substances 0.000 claims description 8
- 238000005507 spraying Methods 0.000 claims description 8
- 238000004804 winding Methods 0.000 claims description 8
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 6
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 claims description 6
- 238000006386 neutralization reaction Methods 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 5
- 238000005286 illumination Methods 0.000 claims description 5
- 238000001291 vacuum drying Methods 0.000 claims description 4
- ZZLCFHIKESPLTH-UHFFFAOYSA-N 4-Methylbiphenyl Chemical group C1=CC(C)=CC=C1C1=CC=CC=C1 ZZLCFHIKESPLTH-UHFFFAOYSA-N 0.000 claims 1
- 230000003301 hydrolyzing effect Effects 0.000 claims 1
- 230000000052 comparative effect Effects 0.000 description 9
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- WXPWZZHELZEVPO-UHFFFAOYSA-N (4-methylphenyl)-phenylmethanone Chemical group C1=CC(C)=CC=C1C(=O)C1=CC=CC=C1 WXPWZZHELZEVPO-UHFFFAOYSA-N 0.000 description 4
- 230000007062 hydrolysis Effects 0.000 description 4
- 238000006460 hydrolysis reaction Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000004321 preservation Methods 0.000 description 4
- 238000005406 washing Methods 0.000 description 3
- 241000191967 Staphylococcus aureus Species 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 125000000101 thioether group Chemical group 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 241000588724 Escherichia coli Species 0.000 description 1
- 229910002808 Si–O–Si Inorganic materials 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000002781 deodorant agent Substances 0.000 description 1
- 230000001877 deodorizing effect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000000578 dry spinning Methods 0.000 description 1
- 210000004177 elastic tissue Anatomy 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 235000019645 odor Nutrition 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000035900 sweating Effects 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
- D03D15/283—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres
-
- 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
- D01F6/94—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 other polycondensation products
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/40—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads
- D03D15/47—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads multicomponent, e.g. blended yarns or threads
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
- D03D15/56—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads elastic
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/10—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyurethanes
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/06—Load-responsive characteristics
- D10B2401/061—Load-responsive characteristics elastic
-
- 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
- D10B2401/13—Physical properties anti-allergenic or anti-bacterial
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention relates to a high-elasticity antibacterial fabric and a preparation method thereof, wherein the high-elasticity antibacterial fabric comprises the following steps: (1) preparing a modified polyurethane resin spinning solution; (2) preparing a modified polyurethane fiber; (3) preparing a high-elasticity antibacterial fabric: and (3) blending the modified polyurethane fibers and the polyester fibers according to a proportion, then sending the blend into a circular knitting machine, forming a blank through weaving, and carrying out aftertreatment on the blank to obtain the high-elasticity antibacterial fabric. The high-elasticity antibacterial fabric is obtained by blending the modified polyurethane fiber and the polyester fiber, and the modified polyurethane fiber has higher elasticity and strength than the traditional polyurethane fiber, also has better antibacterial property and heat resistance, and also has high strength, high elasticity and good antibacterial property and heat resistance after being blended with the polyester fiber.
Description
Technical Field
The invention relates to the field of fabrics, in particular to a high-elasticity antibacterial fabric and a preparation method thereof.
Background
The fabric is the material used for making clothing. As one of the three elements of the garment, the fabric can not only explain the style and the characteristics of the garment, but also directly control the color and the modeling of the garment. The functional fabric is a fabric with certain special properties and purposes, such as waterproof, windproof, breathable, moisture permeable, thermal, oil-proof, soil-release, antibacterial, deodorant, ultraviolet-proof, antistatic, radiation-proof, flame-retardant, high-temperature resistant, acid-alkali resistant and other functions. The functional fabric in the market mainly comprises clothing fabric and is mainly used in outdoor sportswear and high-grade casual wear.
The elastic effect of the fabric mainly depends on the characteristics of the fibers of the fabric, and if the fibers are good in elasticity, the fabric is good in elasticity, otherwise, the fabric is poor in elastic effect. The most elastic fibers used in the market at present are polyurethane fibers, but the strength of the polyurethane fibers is slightly insufficient, the oxidation resistance and the heat resistance are poor, the washing process must be kept in a low temperature and soft mode, otherwise, the shrinkage or cracking phenomenon can occur; in addition, the antibacterial and deodorizing effects of polyurethane fibers are not very good, and unpleasant odors can be generated during sweating, even causing the spread of diseases, affecting the health of the human body.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a high-elasticity antibacterial fabric and a preparation method thereof.
The aim of the invention is realized by adopting the following technical scheme:
in a first aspect, the invention provides a preparation method of a high-elasticity antibacterial fabric, which comprises the following steps:
(1) Preparing a modified polyurethane resin spinning solution:
Weighing sulfhydryl polysilsesquioxane, mixing the sulfhydryl polysilsesquioxane into double-bond blocked polyurethane resin, stirring the mixture at room temperature until the mixture is uniformly dissolved, then adding a photoinitiator, stirring the mixture for reaction for 0.5 to 1 hour under UV illumination, and filtering and defoaming the mixture after the reaction is finished to obtain a modified polyurethane resin spinning solution;
(2) Preparing modified polyurethane fiber:
Quantitatively and uniformly conveying the modified polyurethane resin spinning solution into spinning equipment through a metering pump, spraying the spinning solution through a spray hole of a spinneret plate, and forming filaments after the solvent in the spinning solution is volatilized at high temperature through an air channel after preheating, and winding and finishing to form modified polyurethane fibers;
(3) Preparing a high-elasticity antibacterial fabric:
And (3) blending the modified polyurethane fibers and the polyester fibers according to a proportion, then sending the blend into a circular knitting machine, forming a blank through weaving, and carrying out aftertreatment on the blank to obtain the high-elasticity antibacterial fabric.
Preferably, the preparation process of the sulfhydrylation polysilsesquioxane (HS-POSS) comprises the following steps:
Weighing methyltrimethoxysilane and gamma-mercaptopropyl trimethoxysilane, mixing in ethanol solution, stirring at room temperature for hydrolysis for 2-4h, then dropwise adding hydrochloric acid with mass concentration of 37%, placing in a water bath kettle with the temperature of 50-70 ℃ for stirring for 24-48h, removing solvent under reduced pressure, purifying, and vacuum drying to obtain mercaptopolysilsesquioxane (HS-POSS);
Wherein the mass volume ratio of the methyltrimethoxysilane, the gamma-mercaptopropyl trimethoxysilane and the ethanol solution is (3.2-3.8) g: (4.7-5.3) g: (20-40) mL; the mass fraction of the ethanol solution is 20% -30%; the mass concentration of the hydrochloric acid is 37%, and the volume ratio of the hydrochloric acid to the ethanol solution is 0.05:10-30.
Preferably, the preparation process of the double bond terminated polyurethane resin comprises the following steps:
s1, weighing isophorone diisocyanate and polyoxypropylene glycol, mixing in a three-port reaction bottle, heating to 75-85 ℃, and fully stirring and mixing for 2-4 hours to obtain a first mixed reaction solution;
s2, cooling the first mixed reaction solution to 50+/-5 ℃, sequentially adding dimethylolpropionic acid and diethylene glycol, uniformly stirring, heating to 70-80 ℃, adding a catalyst for the first time, stirring for 3-5 hours at a constant temperature, adding acetone during the reaction period to adjust the viscosity of the system, and obtaining the isocyanate-terminated polyurethane prepolymer after the reaction is finished;
s3, adding a catalyst into the isocyanate-terminated polyurethane prepolymer for the second time, adding hydroxyethyl acrylate, continuously maintaining at 70-80 ℃ for stirring reaction for 2-4 hours, cooling to room temperature after the reaction is finished, and dropwise adding triethylamine for neutralization to obtain double-bond terminated polyurethane resin;
Preferably, in the step S1, the molecular weight of the polyoxypropylene glycol is 1000, and the molar ratio of isocyanate groups in isophorone diisocyanate to hydroxyl groups in the polyoxypropylene glycol is 1:1.1-1.3.
Preferably, in the step S2, the mass ratio of dimethylolpropionic acid, diethylene glycol and the first mixed reaction solution is 1:1:3-5.
Preferably, in the steps of S2 and S3, the catalyst includes stannous octoate and dibutyl tin dilaurate, and the mass ratio of stannous octoate to dibutyl tin dilaurate is 1:1-2; the first catalyst amount in the step S2 is 0.6-0.8% of the mass of isophorone diisocyanate in the step S1, and the second catalyst amount in the step S3 is 0.2-0.4% of the mass of isophorone diisocyanate in the step S1.
Preferably, in the step of S3, the addition amount of the hydroxyethyl acrylate is 6 to 10 percent of the mass of the isocyanate-terminated polyurethane prepolymer.
Preferably, in the step of S3, the mass ratio of the addition amount of the triethylamine to the isophorone diisocyanate in S1 is 1-1.5:15-20.
Preferably, in the step (1), the mass ratio of the mercapto polysilsesquioxane to the double bond blocked polyurethane resin is 1:5-10.
Preferably, in the step (1), the photoinitiator is 4-methylbenzophenone, and the addition amount of the photoinitiator is 2% -6% of the mass of the mercapto polysilsesquioxane; the UV light intensity is 150-200mw/cm 2.
Preferably, in step (2), the length of the modified polyurethane fiber is 25 to 30mm and the cross-sectional diameter is 12 to 18. Mu.m.
Preferably, in the step (3), the length of the polyester fiber is 20-25mm and the cross-sectional diameter is 12-18 μm; blending the modified polyurethane fiber and the polyester fiber according to the weight ratio of 1:2-4; the fineness of the yarn obtained by blending is 40-50D.
Preferably, in the step (3), the yarns obtained by blending are used as warp yarns and weft yarns in the weaving process of one-up and one-down warp and weft knitting, wherein the warp yarn density is 198-206/10 cm, and the weft yarn density is 186-194/10 cm.
Preferably, in step (3), the post-treatment comprises washing, softening finishing, drying and shaping, wherein the washing is sodium hydroxide; wherein, the cleaning is to use 1g/L sodium hydroxide solution to clean once, and then clean with clear water for three times; the softening finishing is carried out by placing the fabric in 1g/L DHT21 softener for 10min; the temperature for drying and shaping is 125-145 ℃.
In a second aspect, the invention provides a high-elasticity antibacterial fabric, which is prepared by the preparation method.
The beneficial effects of the invention are as follows:
1. The high-elasticity antibacterial fabric is obtained by blending the modified polyurethane fiber and the polyester fiber, and the modified polyurethane fiber has higher elasticity and strength than the traditional polyurethane fiber, also has better antibacterial property and heat resistance, and also has high strength, high elasticity and good antibacterial property and heat resistance after being blended with the polyester fiber.
2. The modified polyurethane fiber prepared by the invention takes double-bond-terminated polyurethane resin as a base material, uses sulfhydrylated polysilsesquioxane (HS-POSS) to carry out graft modification, finally obtains a polyurethane compound grafted with POSS groups and thioether groups (R-S-R) through the CLICK CHEMISTRY reaction of sulfhydryl groups and double bonds, and forms fiber filaments through dry spinning, namely, through volatilization of a solvent, thereby obtaining the modified polyurethane fiber.
3. The sulfhydrylation polysilsesquioxane (HS-POSS) is used as a modifier, and has a high stability structure of Si-O-Si in the modification process of polyurethane resin, and has stronger mechanical strength, and thioether groups (R-S-R) formed by double bonds and sulfhydryl groups have better heat resistance and strength, and also have better antibacterial property.
Detailed Description
The technical scheme of the invention is described below through specific examples. It is to be understood that the mention of one or more method steps of the present invention does not exclude the presence of other method steps before and after the combination step or that other method steps may be interposed between these explicitly mentioned steps; it should also be understood that these examples are illustrative of the present invention and are not intended to limit the scope of the present invention. Moreover, unless otherwise indicated, the numbering of the method steps is merely a convenient tool for identifying the method steps and is not intended to limit the order of arrangement of the method steps or to limit the scope of the invention in which the invention may be practiced, as such changes or modifications in their relative relationships may be regarded as within the scope of the invention without substantial modification to the technical matter.
In order to better understand the above technical solution, exemplary embodiments of the present invention are described in more detail below. While exemplary embodiments of the invention are shown, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The invention is further described with reference to the following examples.
Example 1
The preparation method of the high-elasticity antibacterial fabric comprises the following steps of:
(1) Preparing a modified polyurethane resin spinning solution:
Weighing sulfhydryl polysilsesquioxane, mixing the sulfhydryl polysilsesquioxane into double-bond blocked polyurethane resin, stirring the mixture at room temperature until the sulfhydryl polysilsesquioxane is uniformly dissolved, then adding a photoinitiator 4-methylbenzophenone, stirring the mixture for reaction for 0.5h under UV illumination, and obtaining a modified polyurethane resin spinning solution after filtration and defoaming treatment are carried out after the reaction is finished; the mass ratio of the mercapto polysilsesquioxane to the double bond blocked polyurethane resin is 1:8, the addition amount of the photoinitiator is 3% of the mass of the sulfhydryl polysilsesquioxane; the UV light intensity was 180mw/cm 2.
(2) Preparing modified polyurethane fiber:
Quantitatively and uniformly conveying the modified polyurethane resin spinning solution into spinning equipment through a metering pump, spraying the spinning solution through a spray hole of a spinneret plate, and forming filaments after the solvent in the spinning solution is volatilized at high temperature through an air channel after preheating, and winding and finishing to form modified polyurethane fibers; the length of the modified polyurethane fiber is 25-30mm, and the section diameter is 12-18 mu m.
(3) Preparing a high-elasticity antibacterial fabric:
Blending the modified polyurethane fiber and the polyester fiber according to a proportion, then feeding the blend into a circular knitting machine, forming a blank through one-up and one-down warp and weft knitting, taking the yarn obtained by blending as warp yarn and weft yarn, wherein the warp yarn density is 202 pieces/10 cm, the weft yarn density is 190 pieces/10 cm, and carrying out post-treatment on the blank to obtain the high-elasticity antibacterial fabric; the post-treatment comprises cleaning, softening finishing, drying and shaping, wherein the cleaning is sodium hydroxide; wherein, the cleaning is to use 1g/L sodium hydroxide solution to clean once, and then clean with clear water for three times; the softening finishing is carried out by placing the fabric in 1g/L DHT21 softener for 10min; the temperature for drying and shaping is 135 ℃; the length of the polyester fiber is 20-25mm, and the diameter of the section is 12-18 mu m; blending the modified polyurethane fiber and the polyester fiber according to the weight ratio of 1:2-4; the fineness of the yarn obtained by blending was 45D.
In the step (1), the preparation process of the sulfhydrylation polysilsesquioxane (HS-POSS) comprises the following steps:
Weighing methyltrimethoxysilane and gamma-mercaptopropyl trimethoxysilane, mixing in ethanol solution, stirring at room temperature for hydrolysis for 3 hours, then dropwise adding hydrochloric acid with the mass concentration of 37%, placing in a water bath kettle at 60 ℃ for stirring for 36 hours, removing solvent under reduced pressure, purifying, and vacuum drying to obtain mercapto polysilsesquioxane (HS-POSS); wherein, the mass volume ratio of the methyltrimethoxysilane, the gamma-mercaptopropyl trimethoxysilane and the ethanol solution is 3.5g:5g:30mL; the mass fraction of the ethanol solution is 25%; the mass concentration of the hydrochloric acid is 37%, and the volume ratio of the hydrochloric acid to the ethanol solution is 0.05:20.
In the step (1), the preparation process of the double-bond blocked polyurethane resin comprises the following steps:
s1, weighing isophorone diisocyanate and polyoxypropylene glycol, mixing in a three-port reaction bottle, heating to 80 ℃, and fully stirring and mixing for 3 hours to obtain a first mixed reaction solution; the molecular weight of the polyoxypropylene diol was 1000 and the molar ratio of isocyanate groups in isophorone diisocyanate to hydroxyl groups in the polyoxypropylene diol was 1:1.2.
S2, cooling the first mixed reaction solution to 50+/-5 ℃, sequentially adding dimethylolpropionic acid and diethylene glycol, uniformly stirring, heating to 75 ℃, adding a catalyst (the mass ratio of stannous octoate to dibutyltin dilaurate is 1:1.5) for the first time, wherein the catalyst amount is 0.7% of the mass of isophorone diisocyanate in S1, carrying out heat preservation and stirring for 4 hours, adding acetone to regulate the viscosity of a system during the reaction, and obtaining the isocyanate-terminated polyurethane prepolymer after the reaction is finished; the mass ratio of the dimethylolpropionic acid to the diethylene glycol to the first mixed reaction solution is 1:1:4.
S3, adding a catalyst (the mass ratio of stannous octoate to dibutyltin dilaurate is 1:1.5) into the isocyanate-terminated polyurethane prepolymer for the second time, wherein the catalyst amount is 0.3% of the mass of isophorone diisocyanate in S1, adding hydroxyethyl acrylate, continuously maintaining the temperature at 75 ℃ for stirring reaction for 3 hours, cooling to room temperature after the reaction is finished, and dropwise adding triethylamine for neutralization to obtain double-bond terminated polyurethane resin; the addition amount of the hydroxyethyl acrylate is 8% of the mass of the isocyanate-terminated polyurethane prepolymer; the mass ratio of the triethylamine to isophorone diisocyanate in S1 is 1.2:18.
Example 2
The preparation method of the high-elasticity antibacterial fabric comprises the following steps of:
(1) Preparing a modified polyurethane resin spinning solution:
Weighing sulfhydryl polysilsesquioxane, mixing the sulfhydryl polysilsesquioxane into double-bond blocked polyurethane resin, stirring the mixture at room temperature until the sulfhydryl polysilsesquioxane is uniformly dissolved, then adding a photoinitiator 4-methylbenzophenone, stirring the mixture for reaction for 0.5h under UV illumination, and obtaining a modified polyurethane resin spinning solution after filtration and defoaming treatment are carried out after the reaction is finished; the mass ratio of the mercapto polysilsesquioxane to the double bond blocked polyurethane resin is 1:5, the addition amount of the photoinitiator is 2% of the mass of the sulfhydryl polysilsesquioxane; the UV light intensity was 150mw/cm 2.
(2) Preparing modified polyurethane fiber:
Quantitatively and uniformly conveying the modified polyurethane resin spinning solution into spinning equipment through a metering pump, spraying the spinning solution through a spray hole of a spinneret plate, and forming filaments after the solvent in the spinning solution is volatilized at high temperature through an air channel after preheating, and winding and finishing to form modified polyurethane fibers; the length of the modified polyurethane fiber is 25-30mm, and the section diameter is 12-18 mu m.
(3) Preparing a high-elasticity antibacterial fabric:
blending the modified polyurethane fiber and the polyester fiber according to a proportion, then feeding the blend into a circular knitting machine, forming a blank through one-up and one-down warp and weft knitting, taking the yarn obtained by blending as warp yarn and weft yarn, wherein the warp yarn density is 198 pieces/10 cm, the weft yarn density is 186 pieces/10 cm, and carrying out post-treatment on the blank to obtain the high-elasticity antibacterial fabric; the post-treatment comprises cleaning, softening finishing, drying and shaping, wherein the cleaning is sodium hydroxide; wherein, the cleaning is to use 1g/L sodium hydroxide solution to clean once, and then clean with clear water for three times; the softening finishing is carried out by placing the fabric in 1g/L DHT21 softener for 10min; the temperature for drying and shaping is 125 ℃; the length of the polyester fiber is 20-25mm, and the diameter of the section is 12-18 mu m; blending the modified polyurethane fiber and the polyester fiber according to the weight ratio of 1:2; the fineness of the yarn obtained by blending was 40D.
In the step (1), the preparation process of the sulfhydrylation polysilsesquioxane (HS-POSS) comprises the following steps:
Weighing methyltrimethoxysilane and gamma-mercaptopropyl trimethoxysilane, mixing in ethanol solution, stirring at room temperature for hydrolysis for 2 hours, then dropwise adding hydrochloric acid with the mass concentration of 37%, placing in a water bath kettle at 50 ℃ for stirring for 24 hours, removing solvent under reduced pressure, purifying, and vacuum drying to obtain mercapto polysilsesquioxane (HS-POSS); wherein, the mass volume ratio of the methyltrimethoxysilane, the gamma-mercaptopropyl trimethoxysilane and the ethanol solution is 3.2g:4.7g:20mL; the mass fraction of the ethanol solution is 20%; the mass concentration of the hydrochloric acid is 37%, and the volume ratio of the hydrochloric acid to the ethanol solution is 0.05:10.
In the step (1), the preparation process of the double-bond blocked polyurethane resin comprises the following steps:
S1, weighing isophorone diisocyanate and polyoxypropylene glycol, mixing in a three-port reaction bottle, heating to 75 ℃, and fully stirring and mixing for 2 hours to obtain a first mixed reaction solution; the molecular weight of the polyoxypropylene diol was 1000 and the molar ratio of isocyanate groups in isophorone diisocyanate to hydroxyl groups in the polyoxypropylene diol was 1:1.1.
S2, cooling the first mixed reaction solution to 50+/-5 ℃, sequentially adding dimethylolpropionic acid and diethylene glycol, uniformly stirring, heating to 70 ℃, adding a catalyst (the mass ratio of stannous octoate to dibutyltin dilaurate is 1:1) for the first time, wherein the catalyst amount is 0.6% of the mass of isophorone diisocyanate in S1, carrying out heat preservation and stirring for 3 hours, adding acetone to adjust the viscosity of a system during the reaction, and obtaining the isocyanate-terminated polyurethane prepolymer after the reaction is finished; the mass ratio of the dimethylolpropionic acid to the diethylene glycol to the first mixed reaction solution is 1:1:3.
S3, adding a catalyst (the mass ratio of stannous octoate to dibutyltin dilaurate is 1:1) into the isocyanate-terminated polyurethane prepolymer for the second time, wherein the catalyst amount is 0.2% of the mass of isophorone diisocyanate in S1, adding hydroxyethyl acrylate, continuously maintaining the temperature at 70 ℃ for stirring reaction for 2 hours, cooling to room temperature after the reaction is finished, and dropwise adding triethylamine for neutralization to obtain double-bond terminated polyurethane resin; the addition amount of the hydroxyethyl acrylate is 6% of the mass of the isocyanate-terminated polyurethane prepolymer; the mass ratio of the addition of triethylamine to isophorone diisocyanate in S1 is 1:15.
Example 3
The preparation method of the high-elasticity antibacterial fabric comprises the following steps of:
(1) Preparing a modified polyurethane resin spinning solution:
weighing sulfhydryl polysilsesquioxane, mixing the sulfhydryl polysilsesquioxane into double-bond blocked polyurethane resin, stirring the mixture at room temperature until the sulfhydryl polysilsesquioxane is uniformly dissolved, then adding a photoinitiator 4-methylbenzophenone, stirring the mixture under UV illumination for reaction for 1h, and filtering and defoaming the mixture after the reaction is finished to obtain a modified polyurethane resin spinning solution; the mass ratio of the mercapto polysilsesquioxane to the double bond blocked polyurethane resin is 1:10, the addition amount of the photoinitiator is 6% of the mass of the sulfhydryl polysilsesquioxane; the UV light intensity was 200mw/cm 2.
(2) Preparing modified polyurethane fiber:
Quantitatively and uniformly conveying the modified polyurethane resin spinning solution into spinning equipment through a metering pump, spraying the spinning solution through a spray hole of a spinneret plate, and forming filaments after the solvent in the spinning solution is volatilized at high temperature through an air channel after preheating, and winding and finishing to form modified polyurethane fibers; the length of the modified polyurethane fiber is 25-30mm, and the section diameter is 12-18 mu m.
(3) Preparing a high-elasticity antibacterial fabric:
Blending the modified polyurethane fiber and the polyester fiber according to a proportion, then feeding the blend into a circular knitting machine, forming a blank through one-up and one-down warp and weft knitting, taking the yarn obtained by blending as warp yarn and weft yarn, wherein the warp yarn density is 206 pieces/10 cm, the weft yarn density is 194 pieces/10 cm, and carrying out post-treatment on the blank to obtain the high-elasticity antibacterial fabric; the post-treatment comprises cleaning, softening finishing, drying and shaping, wherein the cleaning is sodium hydroxide; wherein, the cleaning is to use 1g/L sodium hydroxide solution to clean once, and then clean with clear water for three times; the softening finishing is carried out by placing the fabric in 1g/L DHT21 softener for 10min; the temperature for drying and shaping is 145 ℃; the length of the polyester fiber is 20-25mm, and the diameter of the section is 12-18 mu m; blending the modified polyurethane fiber and the polyester fiber according to the weight ratio of 1:4; the fineness of the yarn obtained by blending was 50D.
In the step (1), the preparation process of the sulfhydrylation polysilsesquioxane (HS-POSS) comprises the following steps:
Weighing methyltrimethoxysilane and gamma-mercaptopropyl trimethoxysilane, mixing in ethanol solution, stirring at room temperature for hydrolysis for 4 hours, then dropwise adding hydrochloric acid with the mass concentration of 37%, placing in a water bath kettle with the temperature of 70 ℃ for stirring for 48 hours, removing the solvent under reduced pressure, purifying, and drying in vacuum to obtain mercaptopolysilsesquioxane (HS-POSS); wherein, the mass volume ratio of the methyltrimethoxysilane, the gamma-mercaptopropyl trimethoxysilane and the ethanol solution is 3.8g:5.3g:40mL; the mass fraction of the ethanol solution is 30%; the mass concentration of the hydrochloric acid is 37%, and the volume ratio of the hydrochloric acid to the ethanol solution is 0.05:30.
In the step (1), the preparation process of the double-bond blocked polyurethane resin comprises the following steps:
S1, weighing isophorone diisocyanate and polyoxypropylene glycol, mixing in a three-port reaction bottle, heating to 85 ℃, and fully stirring and mixing for 4 hours to obtain a first mixed reaction solution; the molecular weight of the polyoxypropylene diol was 1000 and the molar ratio of isocyanate groups in isophorone diisocyanate to hydroxyl groups in the polyoxypropylene diol was 1:1.3.
S2, cooling the first mixed reaction solution to 50+/-5 ℃, sequentially adding dimethylolpropionic acid and diethylene glycol, uniformly stirring, heating to 80 ℃, adding a catalyst (the mass ratio of stannous octoate to dibutyltin dilaurate is 1:2) for the first time, wherein the catalyst amount is 0.8% of the mass of isophorone diisocyanate in S1, carrying out heat preservation and stirring for 5 hours, adding acetone to adjust the viscosity of a system during the reaction, and obtaining the isocyanate-terminated polyurethane prepolymer after the reaction is finished; the mass ratio of the dimethylolpropionic acid to the diethylene glycol to the first mixed reaction solution is 1:1:5.
S3, adding a catalyst (the mass ratio of stannous octoate to dibutyltin dilaurate is 1:2) into the isocyanate-terminated polyurethane prepolymer for the second time, wherein the catalyst amount is 0.4% of the mass of isophorone diisocyanate in S1, adding hydroxyethyl acrylate, continuously maintaining the temperature at 80 ℃ for stirring reaction for 4 hours, cooling to room temperature after the reaction is finished, and dropwise adding triethylamine for neutralization to obtain double-bond terminated polyurethane resin; the addition amount of the hydroxyethyl acrylate is 10% of the mass of the isocyanate-terminated polyurethane prepolymer; the mass ratio of the addition of triethylamine to isophorone diisocyanate in S1 is 1.5:20.
Comparative example 1
A fabric was prepared in the same manner as in example 1 except that the modified polyurethane fiber used was replaced with a polyurethane fiber, and the polyurethane fiber was prepared by a method comprising:
s1, weighing isophorone diisocyanate and polyoxypropylene glycol, mixing in a three-port reaction bottle, heating to 80 ℃, and fully stirring and mixing for 3 hours to obtain a first mixed reaction solution; the molecular weight of the polyoxypropylene diol was 1000 and the molar ratio of isocyanate groups in isophorone diisocyanate to hydroxyl groups in the polyoxypropylene diol was 1:1.2.
S2, cooling the first mixed reaction solution to 50+/-5 ℃, sequentially adding dimethylolpropionic acid and diethylene glycol, uniformly stirring, heating to 75 ℃, adding a catalyst (the mass ratio of stannous octoate to dibutyltin dilaurate is 1:1.5) for the first time, wherein the catalyst amount is 0.7% of the mass of isophorone diisocyanate in S1, carrying out heat preservation and stirring for 4 hours, adding acetone to regulate the viscosity of a system during the reaction, and obtaining the isocyanate-terminated polyurethane prepolymer after the reaction is finished; the mass ratio of the dimethylolpropionic acid to the diethylene glycol to the first mixed reaction solution is 1:1:4.
S3, adding a catalyst (the mass ratio of stannous octoate to dibutyltin dilaurate is 1:1.5) into the isocyanate-terminated polyurethane prepolymer for the second time, wherein the catalyst amount is 0.3% of the mass of isophorone diisocyanate in S1, continuously maintaining 75 ℃ for stirring reaction for 3 hours, cooling to room temperature after the reaction is finished, and dropwise adding triethylamine for neutralization to obtain polyurethane resin; the mass ratio of the triethylamine to isophorone diisocyanate in S1 is 1.2:18.
S4, quantitatively and uniformly conveying polyurethane resin into spinning equipment through a metering pump, spraying spinning solution through a spray hole of a spinneret plate, and forming filaments after solvent in the spinning solution is volatilized at high temperature through a preheated air channel to form polyurethane fibers through winding and finishing; the length of the polyurethane fiber is 25-30mm, and the section diameter is 12-18 μm.
Comparative example 2
A fabric was prepared in the same manner as in example 1, except that the modified polyurethane fiber was prepared in a manner different from example 1, comprising:
s1, preparing double-bond blocked polyurethane resin by the same method as in the example 1;
S2, quantitatively and uniformly conveying double-bond blocked polyurethane resin into spinning equipment through a metering pump, spraying spinning solution through a spray hole of a spinneret plate, volatilizing a solvent in the spinning solution at a high temperature through a preheated air channel to form filaments, and winding and finishing to form polyurethane fibers; the length of the polyurethane fiber is 25-30mm, and the section diameter is 12-18 μm.
Comparative example 3
A fabric was prepared in the same manner as in example 1, except that the modified polyurethane fiber was prepared in a manner different from example 1, comprising:
s1, preparing a polyurethane resin by using the same method as in comparative example 1, and preparing a sulfhydryl polysilsesquioxane by using the same method as in example 1;
S2, quantitatively and uniformly conveying the mixed mercapto polysilsesquioxane and polyurethane resin into spinning equipment through a metering pump, wherein the mass ratio of the mercapto polysilsesquioxane to the polyurethane resin is 1:8, spraying the spinning solution through a spray hole of a spinneret plate, volatilizing a solvent in the spinning solution at a high temperature through a preheated air channel to form filaments, and winding and finishing to form polyurethane fibers; the length of the polyurethane fiber is 25-30mm, and the section diameter is 12-18 μm.
Experimental example
The fabrics prepared in example 1 and comparative examples 1-3 were subjected to performance test comparison, the breaking strength test reference standard GB/T3923.1-1997, the elastic elongation test reference ASTM D3107-75, the heat shrinkage test reference standard ASTM D123, and the antibacterial rate test reference standard GB/T20944.3-2007, and the results are shown in Table 1:
Table 1 comparison of fabric Performance test results
| Example 1 | Comparative example 1 | Comparative example 2 | Comparative example 3 | |
| MD breaking strength (N) | 514 | 423 | 430 | 436 |
| MD elastic elongation (%) | 63 | 58 | 56 | 59 |
| CD breaking strength (N) | 532 | 431 | 447 | 451 |
| CD elastic elongation (%) | 68 | 60 | 59 | 61 |
| Heat shrinkage at 100 ℃ (%) | 2.1 | 5.6 | 4.2 | 5.1 |
| Coliform bacteria inhibition rate (%) | 93.2 | 77.1 | 79.8 | 85.3 |
| Staphylococcus aureus antibacterial rate (%) | 95.7 | 72.6 | 81.4 | 86.5 |
From Table 1, it can be seen that the fabric prepared in example 1 of the present invention has stronger strength and elasticity than those of comparative examples 1 to 3, and can maintain a lower shrinkage at a high temperature of 100 ℃, and the antibacterial rate against Escherichia coli and Staphylococcus aureus can reach more than 90%.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms should not be understood as necessarily being directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (10)
1. The preparation method of the high-elasticity antibacterial fabric is characterized by comprising the following steps of:
(1) Preparing a modified polyurethane resin spinning solution:
Weighing sulfhydryl polysilsesquioxane, mixing the sulfhydryl polysilsesquioxane into double-bond blocked polyurethane resin, stirring the mixture at room temperature until the mixture is uniformly dissolved, then adding a photoinitiator, stirring the mixture for reaction for 0.5 to 1 hour under UV illumination, and filtering and defoaming the mixture after the reaction is finished to obtain a modified polyurethane resin spinning solution;
(2) Preparing modified polyurethane fiber:
Quantitatively and uniformly conveying the modified polyurethane resin spinning solution into spinning equipment through a metering pump, spraying the spinning solution through a spray hole of a spinneret plate, and forming filaments after the solvent in the spinning solution is volatilized at high temperature through an air channel after preheating, and winding and finishing to form modified polyurethane fibers;
(3) Preparing a high-elasticity antibacterial fabric:
And (3) blending the modified polyurethane fibers and the polyester fibers according to a proportion, then sending the blend into a circular knitting machine, forming a blank through weaving, and carrying out aftertreatment on the blank to obtain the high-elasticity antibacterial fabric.
2. The method for preparing the high-elasticity antibacterial fabric according to claim 1, wherein the preparation process of the sulfhydrylation polysilsesquioxane comprises the following steps:
Mixing methyltrimethoxysilane and gamma-mercaptopropyl trimethoxysilane in ethanol solution, stirring and hydrolyzing for 2-4h at room temperature, then dropwise adding hydrochloric acid with mass concentration of 37%, placing in a water bath kettle with the temperature of 50-70 ℃ and stirring for 24-48h, removing solvent under reduced pressure, purifying, and vacuum drying to obtain the mercaptopolysilsesquioxane.
3. The preparation method of the high-elasticity antibacterial fabric as claimed in claim 2, wherein the mass volume ratio of the methyltrimethoxysilane, the gamma-mercaptopropyl trimethoxysilane and the ethanol solution is (3.2-3.8) g: (4.7-5.3) g: (20-40) mL; the mass fraction of the ethanol solution is 20% -30%; the mass concentration of the hydrochloric acid is 37%, and the volume ratio of the hydrochloric acid to the ethanol solution is 0.05:10-30.
4. The method for preparing the high-elasticity antibacterial fabric according to claim 1, wherein the preparation process of the double-bond blocked polyurethane resin comprises the following steps:
S1, weighing isophorone diisocyanate and polyoxypropylene glycol, mixing in a three-port reaction bottle, heating to 75-85 ℃, and fully stirring and mixing for 2-4 hours to obtain a first mixed reaction solution; the molar ratio of isocyanate groups in isophorone diisocyanate to hydroxyl groups in polyoxypropylene diol is 1:1.1-1.3;
S2, cooling the first mixed reaction solution to 50+/-5 ℃, sequentially adding dimethylolpropionic acid and diethylene glycol, uniformly stirring, heating to 70-80 ℃, adding a catalyst for the first time, stirring for 3-5 hours at a constant temperature, adding acetone during the reaction period to adjust the viscosity of the system, and obtaining the isocyanate-terminated polyurethane prepolymer after the reaction is finished; the mass ratio of the dimethylolpropionic acid to the diethylene glycol to the first mixed reaction solution is 1:1:3-5;
S3, adding a catalyst into the isocyanate-terminated polyurethane prepolymer for the second time, adding hydroxyethyl acrylate, continuously maintaining at 70-80 ℃ for stirring reaction for 2-4 hours, cooling to room temperature after the reaction is finished, and dropwise adding triethylamine for neutralization to obtain double-bond terminated polyurethane resin; the adding amount of the hydroxyethyl acrylate is 6-10% of the mass of the isocyanate-terminated polyurethane prepolymer.
5. The method for preparing the high-elasticity antibacterial fabric according to claim 4, wherein in the steps of S2 and S3, the catalyst comprises stannous octoate and dibutyl tin dilaurate, and the mass ratio of stannous octoate to dibutyl tin dilaurate is 1:1-2; the first catalyst amount in the step S2 is 0.6-0.8% of the mass of isophorone diisocyanate in the step S1, and the second catalyst amount in the step S3 is 0.2-0.4% of the mass of isophorone diisocyanate in the step S1.
6. The preparation method of the high-elasticity antibacterial fabric according to claim 1, wherein in the step (1), the mass ratio of the mercapto polysilsesquioxane to the double-bond blocked polyurethane resin is 1:5-10; the photoinitiator is 4-methyl diphenyl ketone, and the addition amount of the photoinitiator is 2-6% of the mass of the sulfhydrylation polysilsesquioxane; the UV light intensity is 150-200mw/cm 2.
7. The method for preparing the high-elasticity antibacterial fabric according to claim 1, wherein in the step (2), the length of the modified polyurethane fiber is 25-30mm, and the section diameter is 12-18 μm; in the step (3), the length of the polyester fiber is 20-25mm, and the section diameter is 12-18 mu m; blending the modified polyurethane fiber and the polyester fiber according to the weight ratio of 1:2-4; the fineness of the yarn obtained by blending is 40-50D.
8. The method for preparing the high-elasticity antibacterial fabric according to claim 1, wherein in the step (3), the fabric is woven into one-up-down warp and weft, yarns obtained by blending are used as warp yarns and weft yarns, the warp yarn density is 198-206/10 cm, and the weft yarn density is 186-194/10 cm.
9. The method for preparing the high-elasticity antibacterial fabric according to claim 1, wherein in the step (3), the post-treatment comprises cleaning, softening finishing, drying and shaping, wherein the cleaning is sodium hydroxide; wherein, the cleaning is to use 1g/L sodium hydroxide solution to clean once, and then clean with clear water for three times; the softening finishing is carried out by placing the fabric in 1g/L DHT21 softener for 10min; the temperature for drying and shaping is 125-145 ℃.
10. A high-elasticity antibacterial fabric is characterized in that the fabric is prepared by the preparation method of claim 1.
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| CN112442779A (en) * | 2020-11-12 | 2021-03-05 | 汪爱国 | Stretch-proof and fracture-resistant blended fabric and preparation method thereof |
| CN113290960A (en) * | 2021-03-25 | 2021-08-24 | 厦门鸿绮实业有限公司 | Breathable sports fabric |
| CN114773052A (en) * | 2022-05-06 | 2022-07-22 | 株洲火炬安泰新材料有限公司 | Preparation method of high-density ITO target material |
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| JP2004332163A (en) * | 2003-05-08 | 2004-11-25 | Nicca Chemical Co Ltd | Deodorant antibacterial agent for fiber, and deodorant antibacterial fiber product |
| CN109731557A (en) * | 2019-01-18 | 2019-05-10 | 贵州大学 | Containing mercapto-modified micro-nano multistage organosilicon material and preparation method thereof |
| CN112442779A (en) * | 2020-11-12 | 2021-03-05 | 汪爱国 | Stretch-proof and fracture-resistant blended fabric and preparation method thereof |
| CN113290960A (en) * | 2021-03-25 | 2021-08-24 | 厦门鸿绮实业有限公司 | Breathable sports fabric |
| CN114773052A (en) * | 2022-05-06 | 2022-07-22 | 株洲火炬安泰新材料有限公司 | Preparation method of high-density ITO target material |
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