CN115787129B - Preparation method of antibacterial deodorizing polyurethane elastic fiber - Google Patents
Preparation method of antibacterial deodorizing polyurethane elastic fiber Download PDFInfo
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- CN115787129B CN115787129B CN202211613272.XA CN202211613272A CN115787129B CN 115787129 B CN115787129 B CN 115787129B CN 202211613272 A CN202211613272 A CN 202211613272A CN 115787129 B CN115787129 B CN 115787129B
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- zirconium phosphate
- polyethyleneimine
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- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 64
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 39
- 239000004814 polyurethane Substances 0.000 title claims abstract description 39
- 210000004177 elastic tissue Anatomy 0.000 title claims abstract description 36
- 230000001877 deodorizing effect Effects 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title claims abstract description 25
- 229920002873 Polyethylenimine Polymers 0.000 claims abstract description 37
- LEHFSLREWWMLPU-UHFFFAOYSA-B zirconium(4+);tetraphosphate Chemical compound [Zr+4].[Zr+4].[Zr+4].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LEHFSLREWWMLPU-UHFFFAOYSA-B 0.000 claims abstract description 35
- 239000002781 deodorant agent Substances 0.000 claims abstract description 31
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000011550 stock solution Substances 0.000 claims abstract description 26
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 24
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229920003226 polyurethane urea Polymers 0.000 claims abstract description 24
- 239000000835 fiber Substances 0.000 claims abstract description 22
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910000166 zirconium phosphate Inorganic materials 0.000 claims abstract description 13
- BJZYYSAMLOBSDY-QMMMGPOBSA-N (2s)-2-butoxybutan-1-ol Chemical compound CCCCO[C@@H](CC)CO BJZYYSAMLOBSDY-QMMMGPOBSA-N 0.000 claims abstract description 12
- 150000001412 amines Chemical class 0.000 claims abstract description 12
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229920000909 polytetrahydrofuran Polymers 0.000 claims abstract description 12
- 238000003756 stirring Methods 0.000 claims abstract description 12
- 229920000642 polymer Polymers 0.000 claims abstract description 10
- 238000000578 dry spinning Methods 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 239000011259 mixed solution Substances 0.000 claims abstract description 3
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 3
- 239000007787 solid Substances 0.000 claims description 7
- 239000002244 precipitate Substances 0.000 claims description 5
- 238000009987 spinning Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 125000003277 amino group Chemical group 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract description 3
- 239000011159 matrix material Substances 0.000 abstract description 2
- 229920002334 Spandex Polymers 0.000 description 14
- 239000004759 spandex Substances 0.000 description 14
- 238000005406 washing Methods 0.000 description 8
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000004753 textile Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 3
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 3
- 229920001730 Moisture cure polyurethane Polymers 0.000 description 3
- 239000003242 anti bacterial agent Substances 0.000 description 3
- 239000012792 core layer Substances 0.000 description 3
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical compound CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000012948 isocyanate Substances 0.000 description 3
- 150000002513 isocyanates Chemical group 0.000 description 3
- 239000002798 polar solvent Substances 0.000 description 3
- 229920006306 polyurethane fiber Polymers 0.000 description 3
- AOHJOMMDDJHIJH-UHFFFAOYSA-N propylenediamine Chemical compound CC(N)CN AOHJOMMDDJHIJH-UHFFFAOYSA-N 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 229920002413 Polyhexanide Polymers 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000004332 deodorization Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- BSAIUMLZVGUGKX-BQYQJAHWSA-N (E)-non-2-enal Chemical compound CCCCCC\C=C\C=O BSAIUMLZVGUGKX-BQYQJAHWSA-N 0.000 description 1
- VAZJLPXFVQHDFB-UHFFFAOYSA-N 1-(diaminomethylidene)-2-hexylguanidine Polymers CCCCCCN=C(N)N=C(N)N VAZJLPXFVQHDFB-UHFFFAOYSA-N 0.000 description 1
- XYHKNCXZYYTLRG-UHFFFAOYSA-N 1h-imidazole-2-carbaldehyde Chemical compound O=CC1=NC=CN1 XYHKNCXZYYTLRG-UHFFFAOYSA-N 0.000 description 1
- BSAIUMLZVGUGKX-UHFFFAOYSA-N 2-Nonenal Natural products CCCCCCC=CC=O BSAIUMLZVGUGKX-UHFFFAOYSA-N 0.000 description 1
- GWYFCOCPABKNJV-UHFFFAOYSA-M 3-Methylbutanoic acid Natural products CC(C)CC([O-])=O GWYFCOCPABKNJV-UHFFFAOYSA-M 0.000 description 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 229920006052 Chinlon® Polymers 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 229920004933 Terylene® Polymers 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- GWYFCOCPABKNJV-UHFFFAOYSA-N beta-methyl-butyric acid Natural products CC(C)CC(O)=O GWYFCOCPABKNJV-UHFFFAOYSA-N 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000005541 medical transmission Effects 0.000 description 1
- 238000002074 melt spinning Methods 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 229910001463 metal phosphate Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000002304 perfume Substances 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012113 quantitative test Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- 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
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- Artificial Filaments (AREA)
Abstract
The invention relates to a preparation method of antibacterial and deodorant polyurethane elastic fiber, which is prepared from antibacterial and deodorant modified polyurethane elastic fiber and comprises the following steps: 1) Preparing an antibacterial deodorant: mixing nano zirconium phosphate, polyethyleneimine and ethanol, and uniformly stirring to obtain polyethyleneimine modified zirconium phosphate; 2) Preparing a polyurethane urea stock solution: the modified polytetrahydrofuran ether glycol PTMG is prepared by carrying out polymerization reaction on a mixed solution of polytetrahydrofuran ether glycol PTMG, 4' -diphenylmethane diisocyanate MDI and small molecular amine; 3) Preparing antibacterial deodorizing polyurethane elastic fiber: adding the polyethyleneimine modified zirconium phosphate into polyurethane urea stock solution, stirring and curing, and producing the antibacterial deodorizing fiber through dry spinning. The invention has excellent deodorizing performance and antibacterial performance, and overcomes the defect that the existing polyurethane elastic fiber has single performance; meanwhile, the antibacterial deodorant is firmly combined with the polyurethane polymer matrix, and has the advantages of water resistance and durability.
Description
Technical Field
The invention belongs to the technical field of textile processing, and particularly relates to a preparation method of antibacterial and deodorant polyurethane elastic fiber.
Background
The polyurethane elastic fiber is a multi-block copolymer with alternating soft and hard segments, is often interwoven with terylene, chinlon, cotton, viscose fiber and the like, and is applied to the field of clothing fabrics such as underwear, socks, swimwear, panty hose, sportswear, tights and the like.
In daily life, people inevitably contact with various microorganisms such as bacteria and mold, and metabolism and reproduction of the microorganisms easily cause odor generation and disease transmission. The polyurethane fiber is used as an important component of the textile, and the main polyurethane component of the polyurethane fiber has no antibacterial and deodorizing functions; meanwhile, as the proportion of the spandex fiber in the fabric is continuously increased, the antibacterial and deodorant effects of the spandex fiber are good and bad, and the antibacterial and deodorant effects of the spandex fiber on the whole fabric are increasingly important.
Related patents have been reported for the antibacterial and deodorant properties of polyurethane elastic fibers. Patent CN201210078915.5 discloses an antibacterial spandex fiber and a preparation method thereof, wherein the antibacterial agent consists of nano silver and polyurethane, but the nano silver easily discolors the fiber. Patent CN201880005926.6 discloses a deodorizing spandex and a preparation method thereof, mainly by adding 1.0wt% to 10wt% of at least one of zirconium-containing metal phosphate, or metal oxide, or composite metal oxide to the fiber, but when the addition amount is less than 1.0wt%, the deodorizing performance does not reach the standard, and at the same time the technology does not show antibacterial performance. Patent CN202010349782.5 discloses that the antibacterial spandex prepared by adopting polyhexamethylene biguanide intercalated alpha-zirconium phosphate as an antibacterial agent has antibacterial performance meeting the standard requirements, but does not involve the influence of deodorization performance, and the antibacterial agent has the defect of easy loss caused by water washing from fibers. Patent CN202111217533. X discloses a deodorizing spandex and a preparation method thereof, which can rapidly adsorb ammonia gas by introducing phenyl-ammonium carboxylate groups on the molecular chain of the spandex, solves the problem of deodorizing the spandex, but has complicated preparation process and is not beneficial to industrial production. Patent CN201310127211.7 reports a health care spandex consisting of a skin layer and a core layer, wherein the core layer contains bamboo charcoal powder, polyhexamethylene biguanide hydrochloride, perfume, fiber-forming polymer. The spinneret plate assembly is adopted, the core layer melt spinning body and the sheath layer spinning stock solution are respectively extruded from the hollow needle and the extrusion hole of the spinneret plate assembly, so that the health-care spandex with the functions of resisting bacteria and eliminating peculiar smell is prepared, but the fiber is not white, and the production process is complicated, so that the application in the downstream field is limited.
Disclosure of Invention
Technical problems: aiming at the defects of the prior art, the invention provides a preparation method of antibacterial and deodorant polyurethane elastic fiber, and in particular aims to simultaneously realize the antibacterial property and the deodorant property of spandex fiber by a simple technical means. Compared with the prior art, the antibacterial deodorant has the advantages of small addition amount, firm combination with fiber by chemical bonds, water washing resistance, difficult loss and the like.
The technical scheme is as follows: the invention realizes the antibacterial property and the deodorizing property of the polyurethane elastic fiber simultaneously by a simple and easy technical means; meanwhile, the antibacterial deodorant is uniformly dispersed in the fiber, can be firmly chemically bonded with the fiber, and realizes excellent washability.
The fiber is prepared by taking polyethyleneimine modified zirconium phosphate as an antibacterial deodorant, blending the antibacterial deodorant with polyurethane urea stock solution and spinning. Compared with the common polyurethane elastic fiber, the polyurethane elastic fiber has excellent antibacterial property and deodorizing property, and meanwhile, the antibacterial deodorizing agent can be combined with polymers through chemical bonds, and has excellent water washing resistance.
In order to achieve the aim, the preparation method of the antibacterial deodorizing polyurethane elastic fiber adopts the following technical scheme,
Step 1, preparing an antibacterial deodorant: mixing nano zirconium phosphate, polyethyleneimine and ethanol, and uniformly stirring to obtain polyethyleneimine modified zirconium phosphate;
step 2, preparing a polyurethane urea stock solution: the modified polytetrahydrofuran ether glycol PTMG is prepared by carrying out polymerization reaction on a mixed solution of polytetrahydrofuran ether glycol PTMG, 4' -diphenylmethane diisocyanate MDI and small molecular amine;
step 3, preparing the antibacterial deodorizing polyurethane elastic fiber: adding the polyethyleneimine modified zirconium phosphate into polyurethane urea stock solution, stirring and curing to obtain spinning stock solution, and performing dry spinning to obtain the antibacterial deodorizing fiber.
Wherein,
The polyethyleneimine modified zirconium phosphate in the step 1 is obtained by dispersing nano zirconium phosphate in ethanol by ultrasonic, adding polyethyleneimine, reacting for 2-4 hours at 60-80 ℃, and separating precipitate, wherein the mass percentage of the nano zirconium phosphate is 5-25%, the mass percentage of the polyethyleneimine is 1-5%, and the balance is ethanol.
The molecular weight of the polyethyleneimine is 300-1800.
In the polyurethane urea stock solution in the step 2, the polytetrahydrofuran ether glycol PTMG accounts for 75-83% by mass of the solid polymer composition, the 4,4' -diphenylmethane diisocyanate MDI accounts for 15-21% by mass, and the small molecular amine accounts for 2-4% by mass.
In the antibacterial deodorizing fiber in the step 3, the weight percentage of the polyethyleneimine modified zirconium phosphate is 0.2-1 percent, and the weight percentage of the polyurethane urea solid polymer is 99-99.8 percent.
The curing time in the step 3 is 40-50 h.
The polyurethane elastic fiber has 20 to 55meq/kg of terminal amine.
The beneficial effects are that: the invention provides an antibacterial deodorizing polyurethane elastic fiber and a preparation method thereof. The polyethyleneimine modified zirconium phosphate is adopted, so that the problem of dispersion of inorganic nano particles in stock solution is solved, and the method has the advantages of small addition amount and low cost; the antibacterial deodorant polyethylenimine modified zirconium phosphate is combined with the polyurethane fiber matrix in a chemical bond mode, so that the water washing process is not easy to run off; meanwhile, the polyethyleneimine and zirconium phosphate play a synergistic effect, and the deodorizing and antibacterial properties of the fiber can be obviously improved.
Detailed Description
In order to make the technical solution and advantages of the present invention more apparent, the technical solution of the present invention will be clearly and completely described in conjunction with the following examples, which should not be construed as limiting the present invention in any sense.
Example 1:
(1) Preparation of antibacterial deodorant
Dispersing 5 parts of nano zirconium phosphate in 94 parts of ethanol by ultrasonic, slowly adding 1 part of polyethyleneimine while stirring, heating to 60 ℃ under the condition of strong stirring, continuously reacting for 2 hours, standing, separating precipitate, washing with ethanol, and drying to obtain the polyethyleneimine modified zirconium phosphate antibacterial deodorant.
(2) Preparation of polyurethane urea stock solution
Polytetrahydrofuran ether glycol PTMG (molecular weight 1810) 238.64Kg and 4,4' -diphenylmethane diisocyanate MDI 55.09Kg were reacted at 80℃for 2 hours to give an isocyanate group-terminated polyurethane prepolymer, and 438.11Kg of N, N-dimethylacetamide solvent was added to dissolve the prepolymer in a polar solvent. Then, a mixed amine solution composed of 4.685Kg of ethylenediamine, 0.642Kg of propylenediamine, 0.938Kg of diethylamine and 119.041Kg of N, N-dimethylacetamide solvent was added to carry out a chain extension reaction and a chain termination reaction to prepare a polyurethaneurea stock solution.
(3) Preparation of antibacterial deodorizing polyurethane elastic fiber
Adding the antibacterial deodorant polyethylenimine modified zirconium phosphate of the (1) into the polyurethane urea stock solution of the (2), wherein the polyethylenimine modified zirconium phosphate is 0.2% and the polyurethane urea solid polymer is 99.8%, curing the stock solution for 40 hours, and then adopting a dry spinning technology to produce 44 dtex/3-hole antibacterial deodorant polyurethane elastic fiber, wherein the amine end group of the polyurethane elastic fiber is 20meq/kg.
Example 2:
(1) Preparation of antibacterial deodorant
Dispersing 10 parts of nano zirconium phosphate in 87 parts of ethanol by ultrasonic, slowly adding 3 parts of polyethyleneimine while stirring, heating to 70 ℃ under the condition of strong stirring, continuing to react for 3 hours, standing to separate precipitate, washing with ethanol, and drying to obtain the polyethyleneimine modified zirconium phosphate antibacterial deodorant.
(2) Preparation of polyurethane urea stock solution
Polytetrahydrofuran ether glycol PTMG (molecular weight 1810) 238.64Kg and 4,4' -diphenylmethane diisocyanate MDI 55.09Kg were reacted at 80℃for 2 hours to give an isocyanate group-terminated polyurethane prepolymer, and 438.11Kg of N, N-dimethylacetamide solvent was added to dissolve the prepolymer in a polar solvent. Then, a mixed amine solution composed of 4.685Kg of ethylenediamine, 0.642Kg of propylenediamine, 0.938Kg of diethylamine and 119.041Kg of N, N-dimethylacetamide solvent was added to carry out a chain extension reaction and a chain termination reaction to prepare a polyurethaneurea stock solution.
(3) Preparation of antibacterial deodorizing polyurethane elastic fiber
Adding the antibacterial deodorant polyethylenimine modified zirconium phosphate of the (1) into the polyurethane urea stock solution of the (2), wherein the polyethylenimine modified zirconium phosphate is 0.5% and the polyurethane urea solid polymer is 99.5%, curing the stock solution for 45 hours, and then producing the 44 dtex/3-hole antibacterial deodorant polyurethane elastic fiber by adopting a dry spinning technology, wherein the amine end group of the polyurethane elastic fiber is 40meq/kg.
Example 3:
(1) Preparation of antibacterial deodorant
Dispersing 25 parts of nano zirconium phosphate in 70 parts of ethanol by ultrasonic, slowly adding 5 parts of polyethyleneimine while stirring, heating to 80 ℃ under the condition of strong stirring, continuing to react for 4 hours, standing to separate precipitate, washing with ethanol, and drying to obtain the polyethyleneimine modified zirconium phosphate antibacterial deodorant.
(2) Preparation of polyurethane urea stock solution
Polytetrahydrofuran ether glycol PTMG (molecular weight 1810) 238.64Kg and 4,4' -diphenylmethane diisocyanate MDI 55.09Kg were reacted at 80℃for 2 hours to give an isocyanate group-terminated polyurethane prepolymer, and 438.11Kg of N, N-dimethylacetamide solvent was added to dissolve the prepolymer in a polar solvent. Then, a mixed amine solution composed of 4.685Kg of ethylenediamine, 0.642Kg of propylenediamine, 0.938Kg of diethylamine and 119.041Kg of N, N-dimethylacetamide solvent was added to carry out a chain extension reaction and a chain termination reaction to prepare a polyurethaneurea stock solution.
(3) Preparation of antibacterial deodorizing polyurethane elastic fiber
Adding the antibacterial deodorant polyethylenimine modified zirconium phosphate of the (1) into the polyurethane urea stock solution of the (2), wherein the polyethylenimine modified zirconium phosphate is 1% and the polyurethane urea solid polymer is 99%, curing the stock solution for 50 hours, and then producing the 44 dtex/3-hole antibacterial deodorant polyurethane elastic fiber by adopting a dry spinning technology, wherein the amine end group of the polyurethane elastic fiber is 55meq/kg.
Comparative example 1:
(1) Preparation of polyurethane urea stock solution
The preparation method is the same as in example 1.
(2) Preparation of polyurethane elastic fiber
The preparation method is the same as in example 1, except that the polyurethane elastic fiber prepared does not contain the antibacterial deodorant polyethylenimine modified zirconium phosphate.
The antibacterial deodorizing properties of the spandex fiber mentioned in the following examples and comparative examples were examined in the following manner.
(1) Antibacterial property
The polyurethane elastic fiber is subjected to antibacterial performance test after 50 times (AAA grade) water washing. Quantitative tests were carried out according to the standard FZ/T73023-2006 "antibacterial knitwear", using the shaking method.
(2) Deodorizing ability
Determination of textile deodorizing Properties according to Standard GB/T33610.2-2017, section 2: detecting ammonia and acetic acid reduction rate of polyurethane elastic fiber in detection tube method; determination of textile deodorizing Properties according to GB/T33610.3-2019 section 3: gas chromatography was used to determine the reduction rate of isovaleric acid and 2-nonenal. The antibacterial and deodorant test results are shown below:
TABLE 1 antibacterial Properties of polyurethane elastic fiber
TABLE 2 deodorization performance of polyurethane elastic fiber
As can be seen from the above table, the spandex fiber produced by the present technique has excellent antibacterial and deodorizing properties.
Claims (2)
1. The preparation method of the antibacterial deodorizing polyurethane elastic fiber is characterized by comprising the following steps:
step 1, preparing an antibacterial deodorant: mixing nano zirconium phosphate, polyethyleneimine and ethanol, and uniformly stirring to obtain polyethyleneimine modified zirconium phosphate;
step 2, preparing a polyurethane urea stock solution: the modified polytetrahydrofuran ether glycol PTMG is prepared by carrying out polymerization reaction on a mixed solution of polytetrahydrofuran ether glycol PTMG, 4' -diphenylmethane diisocyanate MDI and small molecular amine;
Step 3, preparing the antibacterial deodorizing polyurethane elastic fiber: adding polyethyleneimine modified zirconium phosphate into polyurethane urea stock solution, stirring and curing to obtain spinning stock solution, and performing dry spinning to obtain antibacterial deodorizing fiber;
The polyethyleneimine modified zirconium phosphate in the step 1 is prepared by dispersing nano zirconium phosphate in ethanol by ultrasonic, adding polyethyleneimine, reacting for 2-4 hours at 60-80 ℃, and separating precipitate to obtain polyethyleneimine zirconium phosphate, wherein the nano zirconium phosphate accounts for 5-25% by mass, the polyethyleneimine accounts for 1-5% by mass, and the balance is ethanol; the molecular weight of the polyethyleneimine is 300-1800;
In the polyurethane urea stock solution in the step 2, the polytetrahydrofuran ether glycol PTMG accounts for 75-83% by mass percent of the solid polymer, the 4,4' -diphenylmethane diisocyanate MDI accounts for 15-21% by mass percent, and the micromolecular amine accounts for 2-4% by mass percent; polytetrahydrofuran ether glycol PTMG molecular weight is 1810;
In the antibacterial deodorizing fiber in the step 3, the weight percentage of the polyethyleneimine modified zirconium phosphate is 0.2-1%, and the weight percentage of the polyurethane urea solid polymer is 99-99.8%; the curing time is 40-50 h.
2. The method for producing an antibacterial deodorizing polyurethane elastic fiber according to claim 1, characterized in that said polyurethane elastic fiber has 20 to 55meq/kg of terminal amine.
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| JP2006028453A (en) * | 2004-07-21 | 2006-02-02 | Nisshinbo Ind Inc | Polyurethane elastomer and elastic fiber |
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