CN109371669B - Preparation method of antibacterial sanitary composite fiber - Google Patents
Preparation method of antibacterial sanitary composite fiber Download PDFInfo
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- CN109371669B CN109371669B CN201811255377.6A CN201811255377A CN109371669B CN 109371669 B CN109371669 B CN 109371669B CN 201811255377 A CN201811255377 A CN 201811255377A CN 109371669 B CN109371669 B CN 109371669B
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- 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
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/83—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with metals; with metal-generating compounds, e.g. metal carbonyls; Reduction of metal compounds on textiles
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- 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
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
- D02G3/04—Blended or other yarns or threads containing components made from different materials
- D02G3/045—Blended or other yarns or threads containing components made from different materials all components being made from artificial or synthetic material
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- 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
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
- D02G3/32—Elastic yarns or threads ; Production of plied or cored yarns, one of which is elastic
- D02G3/328—Elastic yarns or threads ; Production of plied or cored yarns, one of which is elastic containing elastane
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
- D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
- D02J1/224—Selection or control of the temperature during stretching
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B3/00—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating
- D06B3/04—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of yarns, threads or filaments
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- 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
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/07—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof
- D06M11/11—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof with halogen acids or salts thereof
- D06M11/13—Ammonium halides or halides of elements of Groups 1 or 11 of the Periodic System
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- 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
- D06M15/01—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
- D06M15/03—Polysaccharides or derivatives thereof
- D06M15/05—Cellulose or derivatives thereof
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- 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
- D06M16/00—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic
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- 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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- 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
- D06M2101/38—Polyurethanes
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- 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]
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- 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
Abstract
The invention relates to the technical field of textiles, in particular to a preparation method of an antibacterial sanitary composite fiber, which comprises the following steps: firstly, respectively manufacturing bamboo charcoal fiber and spandex fiber into pre-oriented traction yarns; secondly, twisting the pre-oriented traction yarns after balanced relaxation treatment; thirdly, winding after cooling, spinning into composite filaments, and then stretching and heat setting; soaking the obtained composite filament in boiling water, taking out and drying; soaking the obtained composite filament in an aqueous solution containing silver ions, and irradiating the aqueous solution with electron beams; sixthly, soaking the composite filament absorbing the nano silver in cellulose base xanthate solution, taking out and drying; seventhly, soaking the composite filament bonded with the nano silver in a hydrochloric acid solution, taking out, washing and drying to obtain the antibacterial sanitary composite fiber. The composite fiber of bamboo charcoal and spandex is used as a core layer, the core layer has elasticity and comfort, the nano silver is easier to adsorb, and the nano silver is further reinforced by the outer layer of cellulose.
Description
Technical Field
The invention relates to the technical field of spinning, in particular to a preparation method of an antibacterial sanitary composite fiber.
Background
With the increase of the demand of people on functional fibers, the development of the functional fibers becomes a hotspot in the scientific research field, in particular to antibacterial fibers.
The invention with the domestic publication number of CN102321935B at present discloses a soluble alginate/carboxymethyl carrageenan composite antibacterial fiber and a preparation method thereof, which is prepared by a wet spinning method from a solution obtained by mixing soluble alginate, carboxymethyl carrageenan and nano-silver dispersion liquid, and the preparation method has wide raw material sources and low cost; the process is simple and convenient, and is beneficial to popularization; the prepared soluble alginate/carboxymethyl carrageenan composite antibacterial fiber has excellent water absorption performance and mechanical performance, good biocompatibility, and higher bioactivity and antibacterial performance.
However, in the antibacterial fiber prepared by the method, the nano silver is dispersed on the surface layer of the fiber, and the nano silver is gradually lost along with the cleaning of the adhesive, so that the antibacterial effect is not long and not ideal, and on the other hand, the defects of insufficient elasticity and comfort of the fiber, complicated preparation method and the like exist.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the existing antibacterial fiber has the characteristics of short lasting antibacterial performance and difficulty in seeing the antibacterial fiber integrating elasticity and comfort.
In order to solve the technical problems, the invention adopts the technical scheme that: a method for preparing an antibacterial hygienic composite fiber, comprising the steps of:
firstly, respectively manufacturing bamboo charcoal fiber and spandex fiber into pre-oriented traction yarns;
secondly, performing balanced relaxation treatment on the obtained pre-oriented traction wire for 20-30 hours at the temperature of 22-26 ℃ and the humidity of 60-70%, and twisting the pre-oriented traction wire to obtain two twisted traction wires;
thirdly, winding the two twisted traction yarns after cooling, spinning the two twisted traction yarns into composite yarns at the spinning speed of 1000 m/min, and then stretching and heat setting;
soaking the composite filament obtained in the step III in boiling water for 20-30 minutes, and taking out and drying;
fifthly, soaking the composite filament obtained in the step (iv) in an aqueous solution containing silver ions, and irradiating the aqueous solution with electron beams to separate out silver nano particles near the surface of the composite filament and attach the silver nano particles to the surface of the fiber to obtain the composite filament adsorbing nano silver;
sixthly, soaking the composite filament adsorbing the nano-silver in cellulose-based xanthate solution for 5-60min, taking out and drying after soaking, and obtaining the composite filament bonding the nano-silver;
seventhly, soaking the composite filament bonded with the nano silver in a hydrochloric acid solution for 5-30min, taking out after soaking, washing and drying to obtain the antibacterial sanitary composite fiber.
Wherein the stretching temperature in the third step is 50-65 ℃, the stretching ratio of the stretched composite yarn is 30-40%, and the heat setting temperature is 180-200 ℃.
Wherein the crimp diameter of the composite filament after the heat setting treatment is 100-200 μm, and the crimp diameter of the composite filament after the immersion in boiling water is 150-250 μm.
Wherein the stress generated when the composite yarn obtained in the step (iv) is extended by 50% is less than 0.025cN/dtex, and the elastic recovery rate is 60-70%.
The twisting treatment comprises the following specific steps:
A. twisting: the first strand of bamboo charcoal fiber is twisted in the forward direction, the first strand of spandex fiber is twisted in the reverse direction, and the forward twist is 100-; the reverse twist during reverse winding is 70-120/10 cm;
B. and (3) cabling: twisting a first strand of bamboo charcoal fiber twisted in the forward direction, a second strand of bamboo charcoal fiber not twisted, a first strand of spandex fiber twisted in the reverse direction and a second strand of spandex fiber not twisted, wherein the twist degree in the forward direction is 80-120/10 cm during twisting; the reverse twist in the reverse winding is 50-90/10 cm.
Wherein, the middle bath ratio of the fifth step, the sixth step and the seventh step is 1: 5-20, 1: 5-15 and 1: 10-20 respectively.
Wherein, the concentration of the aqueous solution containing silver ions in the fifth step is 25-200 ppm.
Wherein, the cellulose xanthate in the step (sixthly) is cellulose sodium xanthate.
Wherein the viscosity of the cellulose-based sodium xanthate is 1000-50000 CPas.
Wherein, the concentration of the hydrochloric acid in the step (c) is 5-30 g/L.
The invention has the beneficial effects that: the bamboo charcoal fiber is characterized in that composite fibers of bamboo charcoal and spandex are used as an inner core, micropores of the bamboo charcoal are naturally more refined and honeycombed, the nano silver is easier to adsorb due to the unique fiber structure, and meanwhile, the bamboo charcoal fiber also has the characteristics of deodorization, bacteriostasis and the like; in the preparation process, the pre-oriented traction yarn is prepared, balanced relaxation treatment is carried out on the pre-oriented traction yarn, and the composite yarn prepared by soaking in boiling water and twisting after heat setting has elasticity but is not tight and comfortable to wear; the cellulose on the outer layer of the inner core further reinforces the nano silver, and the phenomenon of easy falling caused by different properties of the nano silver and the adhesive does not exist, so that the antibacterial agent is washed for many times, the antibacterial effect cannot be weakened, the antibacterial effect is ensured, and the antibacterial agent is more environment-friendly.
Detailed Description
In order to explain the technical content, the objects and the effects of the present invention in detail, the following description will be given with reference to the embodiments.
The most key concept of the invention is as follows: the composite fiber of bamboo charcoal and spandex is used as a core layer, the core layer has elasticity and comfort, the nano silver is easier to adsorb, and the nano silver is further reinforced by the outer layer of cellulose.
The invention provides a preparation method of an antibacterial sanitary composite fiber, which comprises the following steps:
firstly, respectively manufacturing bamboo charcoal fiber and spandex fiber into pre-oriented traction yarns;
secondly, performing balanced relaxation treatment on the obtained pre-oriented traction wire for 20-30 hours at the temperature of 22-26 ℃ and the humidity of 60-70%, and twisting the pre-oriented traction wire to obtain two twisted traction wires;
thirdly, winding the two twisted traction yarns after cooling, spinning the two twisted traction yarns into composite yarns at the spinning speed of 1000 m/min, and then stretching and heat setting;
soaking the composite filament obtained in the step III in boiling water for 20-30 minutes, and taking out and drying;
fifthly, soaking the composite filament obtained in the step (iv) in an aqueous solution containing silver ions, and irradiating the aqueous solution with electron beams to separate out silver nano particles near the surface of the composite filament and attach the silver nano particles to the surface of the fiber to obtain the composite filament adsorbing nano silver;
sixthly, soaking the composite filament adsorbing the nano-silver in cellulose-based xanthate solution for 5-60min, taking out and drying after soaking, and obtaining the composite filament bonding the nano-silver;
seventhly, soaking the composite filament bonded with the nano silver in a hydrochloric acid solution for 5-30min, taking out after soaking, washing and drying to obtain the antibacterial sanitary composite fiber.
From the above description, the beneficial effects of the present invention are: the bamboo charcoal fiber is characterized in that composite fibers of bamboo charcoal and spandex are used as an inner core, micropores of the bamboo charcoal are naturally more refined and honeycombed, the nano silver is easier to adsorb due to the unique fiber structure, and meanwhile, the bamboo charcoal fiber also has the characteristics of deodorization, bacteriostasis and the like; in the preparation process, the pre-oriented traction yarn is prepared, balanced relaxation treatment is carried out on the pre-oriented traction yarn, and the composite yarn prepared by soaking in boiling water and twisting after heat setting has elasticity but is not tight and comfortable to wear; the cellulose on the outer layer of the inner core further reinforces the nano silver, and the phenomenon of easy falling caused by different properties of the nano silver and the adhesive does not exist, so that the antibacterial agent is washed for many times, the antibacterial effect cannot be weakened, the antibacterial effect is ensured, and the antibacterial agent is more environment-friendly.
Furthermore, the drawing temperature in the third step is 50-65 ℃, the drawing multiplying power of the drawn composite yarn is 30-40%, and the heat setting temperature is 180-200 ℃.
Furthermore, the crimp diameter of the composite filament after the heat setting treatment is 100-200 μm, and the crimp diameter of the composite filament after the immersion in boiling water is 150-250 μm.
Further, the composite yarn obtained in the step (iv) has a stress of 0.025cN/dtex or less when the composite yarn is extended by 50%, and an elastic recovery of 60 to 70%.
Further, the twisting treatment comprises the following specific steps:
A. twisting: the first strand of bamboo charcoal fiber is twisted in the forward direction, the first strand of spandex fiber is twisted in the reverse direction, and the forward twist is 100-; the reverse twist during reverse winding is 70-120/10 cm;
B. and (3) cabling: twisting a first strand of bamboo charcoal fiber twisted in the forward direction, a second strand of bamboo charcoal fiber not twisted, a first strand of spandex fiber twisted in the reverse direction and a second strand of spandex fiber not twisted, wherein the twist degree in the forward direction is 80-120/10 cm during twisting; the reverse twist in the reverse winding is 50-90/10 cm.
Furthermore, the middle bath ratio of the fifth step, the sixth step and the seventh step is respectively 1: 5-20, 1: 5-15 and 1: 10-20.
Furthermore, the concentration of the aqueous solution containing silver ions in the fifth step is 25-200 ppm.
Further, the cellulose-based xanthate in the step (sixthly) is cellulose-based sodium xanthate.
Further, the viscosity of the cellulose-based sodium xanthate is 1000-50000 CPas.
Further, the concentration of the hydrochloric acid in the step (c) is 5-30 g/L.
The first embodiment is as follows:
a method for preparing an antibacterial hygienic composite fiber, comprising the steps of:
firstly, respectively manufacturing bamboo charcoal fiber and spandex fiber into pre-oriented traction yarns;
secondly, after the obtained pre-oriented traction wire is subjected to balanced relaxation treatment for 30 hours under the conditions that the temperature is 22 ℃ and the humidity is 60%, twisting treatment is carried out on the pre-oriented traction wire, and the method comprises the following specific steps: twisting a first strand of bamboo charcoal fiber in a forward direction, and twisting a first strand of spandex fiber in a reverse direction, wherein the forward twist is 100/10 cm; the reverse twist during reverse winding is 70/10 cm; a first strand of bamboo charcoal fiber twisted in the forward direction, a second strand of bamboo charcoal fiber not twisted, a first strand of spandex fiber twisted in the reverse direction and a second strand of spandex fiber not twisted are twisted together, and the twist number in the forward direction is 80/10 cm during twisting; the reverse twist during reverse winding is 50/10 cm; two twisted traction wires are obtained;
thirdly, winding the two twisted traction yarns after cooling, spinning the two twisted traction yarns into composite yarns at the spinning speed of 1000 m/min, and then stretching and heat setting; the drawing temperature is 55 ℃, and the drawing ratio of the drawn composite yarn is 40%; the heat setting temperature is 185 ℃, and the crimp diameter of the composite filament after heat setting treatment is 100 mu m;
soaking the composite filament obtained in the step (III) in boiling water for 20 minutes, taking out and drying, wherein the crimp diameter of the composite filament after the soaking in boiling water is 150 mu m; the stress generated by the composite filament when the composite filament is extended by 50% is below 0.025cN/dtex, and the elastic recovery rate is 65%;
fifthly, mixing the composite yarn obtained in the step IV with a bath ratio of 1: 10 soaking in an aqueous solution with silver ion concentration of 50ppm, and irradiating the aqueous solution with an electron beam to separate out silver nano particles near the surface of the composite filament and attach the silver nano particles to the surface of the fiber to obtain the composite filament adsorbing nano silver;
sixthly, the composite filament adsorbing the nano silver is mixed according to the bath ratio of 1: 5 soaking the fiber in a cellulose base xanthate solution with the viscosity of 1000CPas for 30min, then spin-drying the fiber in a spin dryer, taking out the fiber after spin-drying and drying the fiber to obtain the composite filament bonded with the nano-silver;
seventhly, the composite wire bonded with the nano silver is processed by the following steps of: 10 soaking in 5g/L hydrochloric acid solution for 15min, taking out, washing with hot water and cold water, spin-drying at high speed in a spin dryer, drying with hot air after spin-drying, and shaping to obtain the antibacterial sanitary composite fiber.
Example two:
a method for preparing an antibacterial hygienic composite fiber, comprising the steps of:
firstly, respectively manufacturing bamboo charcoal fiber and spandex fiber into pre-oriented traction yarns;
secondly, after the obtained pre-oriented traction wire is subjected to balanced relaxation treatment for 25 hours under the conditions that the temperature is 25 ℃ and the humidity is 66%, twisting treatment is carried out on the pre-oriented traction wire, and the method comprises the following specific steps: twisting a first strand of bamboo charcoal fiber in a forward direction, and twisting a first strand of spandex fiber in a reverse direction, wherein the forward twist is 120/10 cm; the reverse twist during reverse winding is 80/10 cm; a first strand of bamboo charcoal fiber twisted in the forward direction, a second strand of bamboo charcoal fiber not twisted, a first strand of spandex fiber twisted in the reverse direction and a second strand of spandex fiber not twisted are twisted together, and the forward twist is 100/10 cm during twisting; the reverse twist during reverse winding is 75/10 cm; two twisted traction wires are obtained;
thirdly, winding the two twisted traction yarns after cooling, spinning the two twisted traction yarns into composite yarns at the spinning speed of 1000 m/min, and then stretching and heat setting; the drawing temperature is 55 ℃, and the drawing ratio of the drawn composite yarn is 30%; the temperature of heat setting is 190 ℃, and the crimp diameter of the composite filament after heat setting treatment is 105 mu m;
soaking the composite filament obtained in the step III in boiling water for 25 minutes, taking out and drying, wherein the crimp diameter of the composite filament after being soaked in boiling water is 235 microns; the stress generated by the composite filament when the composite filament is extended by 50 percent is less than 0.025cN/dtex, and the elastic recovery rate is 70 percent;
fifthly, mixing the composite yarn obtained in the step IV with a bath ratio of 1: 20, soaking in an aqueous solution with silver ion concentration of 50ppm, and irradiating the aqueous solution with an electron beam to separate out silver nano particles near the surface of the composite filament and attach the silver nano particles to the surface of the fiber to obtain the composite filament adsorbing nano silver;
sixthly, the composite filament adsorbing the nano silver is mixed according to the bath ratio of 1: 15 soaking in a cellulose base xanthate solution with the viscosity of 5000CPas for 50min, then spin-drying in a spin dryer, taking out after spin-drying, and drying to obtain the composite filament bonded with the nano-silver;
seventhly, the composite wire bonded with the nano silver is processed by the following steps of: 10 soaking in hydrochloric acid solution with the concentration of 30g/L for 10min, taking out, washing with hot water and cold water, then spin-drying at high speed in a spin dryer, drying with hot air after spin-drying, and shaping to obtain the antibacterial sanitary composite fiber.
The antibacterial performance of the product obtained in the above example is evaluated after washing for 60 times according to the antibacterial detection method of FZ/T73023 antibacterial knitwear, and the antibacterial rate is shown in the following table 1, wherein the test method refers to the following formula: wherein X is the antibacterial rate (%), a is the average colony number before the test sample experiment, and b is the average colony number after the test sample experiment.
TABLE 1 bacteriostatic ratio (%)
The above products were made into clothes, and the obtained clothes were subjected to sensory evaluation, the evaluation results being shown in table 2.
The four evaluation criteria of elasticity, springback feeling, fluffy feeling, and soft feeling are classified into 6 grades, for example, the higher the soft feeling grade is, the softer the soft feeling is, and the rest are the same.
TABLE 2 sensory evaluation of the resulting fabrics
| Elasticity (grade) | Resilience sense (grade) | Fluffy degree (grade) | Softness (grade) | |
| Example one | 5 | 4 | 4 | 5 |
| Example two | 5 | 4～5 | 4 | 5 |
In conclusion, the preparation method of the antibacterial sanitary composite fiber provided by the invention takes the composite fiber of bamboo charcoal and spandex as an inner core, micropores of the bamboo charcoal are naturally more refined and honeycombed, the nano-silver is easier to adsorb due to the unique fiber structure, and meanwhile, the bamboo charcoal fiber also has the characteristics of deodorization, bacteriostasis and the like; in the preparation process, the pre-oriented traction yarn is prepared, balanced relaxation treatment is carried out on the pre-oriented traction yarn, and the composite yarn prepared by soaking in boiling water and twisting after heat setting has elasticity but is not tight and comfortable to wear; the cellulose on the outer layer of the inner core further reinforces the nano silver, and the phenomenon of easy falling caused by different properties of the nano silver and the adhesive does not exist, so that the antibacterial agent is washed for many times, the antibacterial effect cannot be weakened, the antibacterial effect is ensured, and the antibacterial agent is more environment-friendly.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent modifications made by the present invention in the specification or directly or indirectly applied to the related technical field are included in the scope of the present invention.
Claims (9)
1. A method for preparing antibacterial sanitary composite fiber is characterized by comprising the following steps:
firstly, respectively manufacturing bamboo charcoal fiber and spandex fiber into pre-oriented traction yarns;
secondly, performing balanced relaxation treatment on the obtained pre-oriented traction wire for 20-30 hours at the temperature of 22-26 ℃ and the humidity of 60-70%, and twisting the pre-oriented traction wire to obtain two twisted traction wires;
the twisting treatment comprises the following specific steps:
A. twisting: the first strand of bamboo charcoal fiber is twisted in the forward direction, the first strand of spandex fiber is twisted in the reverse direction, and the forward twist is 100-; the reverse twist during reverse winding is 70-120/10 cm;
B. and (3) cabling: twisting a first strand of bamboo charcoal fiber twisted in the forward direction, a second strand of bamboo charcoal fiber not twisted, a first strand of spandex fiber twisted in the reverse direction and a second strand of spandex fiber not twisted, wherein the twist degree in the forward direction is 80-120/10 cm during twisting; the reverse twist during reverse winding is 50-90/10 cm;
thirdly, winding the two twisted traction yarns after cooling, spinning the two twisted traction yarns into composite yarns at the spinning speed of 1000 m/min, and then stretching and heat setting;
soaking the composite filament obtained in the step III in boiling water for 20-30 minutes, and taking out and drying;
fifthly, soaking the composite filament obtained in the step (iv) in an aqueous solution containing silver ions, and irradiating the aqueous solution with electron beams to separate out silver nano particles near the surface of the composite filament and attach the silver nano particles to the surface of the fiber to obtain the composite filament adsorbing nano silver;
sixthly, soaking the composite filament adsorbing the nano-silver in cellulose-based xanthate solution for 5-60min, taking out and drying after soaking, and obtaining the composite filament bonding the nano-silver;
seventhly, soaking the composite filament bonded with the nano silver in a hydrochloric acid solution for 5-30min, taking out after soaking, washing and drying to obtain the antibacterial sanitary composite fiber.
2. The method for preparing the antibacterial sanitary composite fiber according to claim 1, wherein the drawing temperature in the third step is 50 to 65 ℃, the drawing ratio of the drawn composite filament is 30 to 40%, and the heat setting temperature is 180 to 200 ℃.
3. The method for preparing the antibacterial hygienic composite fiber according to claim 1, wherein the crimp diameter of the composite filament after the heat setting treatment is 100 to 200 μm, and the crimp diameter of the composite filament after the boiling water immersion is 150 to 250 μm.
4. The method for preparing the antibacterial sanitary composite fiber according to claim 1, wherein the composite filament obtained in the step (iv) has a stress of 0.025cN/dtex or less when it is elongated by 50% and an elastic recovery of 60 to 70%.
5. The method for preparing antibacterial sanitary composite fiber according to claim 1, wherein the middle bath ratios of the steps (c), (c) and (c) are 1: 5-20, 1: 5-15 and 1: 10-20, respectively.
6. The method for preparing antibacterial hygienic composite fiber according to claim 1, wherein the silver ion concentration of the aqueous solution containing silver ions in the fifth step is 25 to 200 ppm.
7. The method for preparing antibacterial sanitary composite fiber according to claim 1, wherein the cellulose-based xanthate in the step (sixth) is cellulose-based sodium xanthate.
8. The method for preparing antibacterial hygienic composite fiber as claimed in claim 7, wherein the viscosity of the cellulose-based sodium xanthate is 1000-50000 CPas.
9. The method for preparing antibacterial sanitary composite fibers according to claim 1, wherein the concentration of hydrochloric acid in the step (c) is 5-30 g/L.
Priority Applications (1)
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| CN104432902A (en) * | 2014-12-09 | 2015-03-25 | 常熟市董浜镇徐市晨晨针织服装厂 | Antibacterial quick-drying knitted fabric |
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