CN112981645A - Environment-friendly wool knot colored point fancy yarn and preparation method thereof - Google Patents
Environment-friendly wool knot colored point fancy yarn and preparation method thereof Download PDFInfo
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- 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
- D02G3/34—Yarns or threads having slubs, knops, spirals, loops, tufts, or other irregular or decorative effects, i.e. effect yarns
- D02G3/346—Yarns or threads having slubs, knops, spirals, loops, tufts, or other irregular or decorative effects, i.e. effect yarns with coloured effects, i.e. by differential dyeing process
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- 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
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- 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
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- 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
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- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/327—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated alcohols or esters thereof
- D06M15/333—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated alcohols or esters thereof of vinyl acetate; Polyvinylalcohol
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- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/04—Vegetal fibres
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- D06M2101/10—Animal fibres
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- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/45—Shrinking resistance, anti-felting properties
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- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
- D10B2201/01—Natural vegetable fibres
- D10B2201/02—Cotton
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- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/02—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides
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- 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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Abstract
The invention belongs to the technical field of fancy yarns, and particularly discloses an environment-friendly wool knot colored point fancy yarn and a preparation method thereof.
Description
Technical Field
The invention belongs to the technical field of fancy yarns, and particularly relates to an environment-friendly wool knot colored point fancy yarn and a preparation method thereof.
Technical Field
Nowadays, the textile technology is rapidly developed, various novel spinning yarns are endlessly developed, especially in recent years, in order to meet the continuous increase of fashionable and personalized requirements of people, fancy yarns become an important branch in the textile industry, and unique and high-end fancy yarn products on the market are different day by day and have wide application prospects. The fancy yarn is a general name of fancy yarn and fancy thread, and is produced by a special processing technology, has irregular or regular change characteristics on appearance form and structure and is different from the yarn of common single yarn and plied yarn, and the fancy yarn changes the appearance style of the fabric to a great extent, so that the fabric has enhanced three-dimensional effect and richer colors, is widely applied to the development of various garment fabrics and decorative products, and has unique style. The fancy yarn is not only widely used in knitting products, but also greatly developed in the application of the knitting products, and the development of high-end fancy yarn products is certainly a popular trend. However, most of the fancy yarns in the current market have single functions, only have simple and attractive functions, are stiff in hand feeling and poor in elastic effect, and cannot meet the requirements of people, so that the fancy yarns with soft and fluffy hand feeling, high elasticity and multiple functions are urgently needed to be developed.
Natural fibers have been used by human civilization for thousands of years. The natural curling and scale structure of wool enables wool fibers to be easily cohered, spinning is facilitated, and the wool fabric is high in wearing comfort and long in service life due to good moisture absorption and sweat releasing performance. It is worth mentioning that the toughness, temperature and humidity management and odor resistance of wool enable the traditional fiber to be bright in the innovative field, and the wool is widely applied to high-performance sports wear, health products, industrial textiles and the like. Therefore, the application of wool fibers to fancy yarns has great prospects.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the yarn is prepared by adopting short fiber twisting equipment, the yarn evenness is good, the knots are consistent in size, the yarn is soft and fluffy in hand feeling, good in elasticity and high in strength, and has excellent wear resistance, lasting anti-felting property and antistatic property.
To achieve the above object, the present invention has the following technical means.
The subject is an environment-friendly wool knot fancy yarn, which comprises:
core yarn: the cotton/regenerated polyester three-color dotted yarn with the yarn number of 30-50 Ne has the ratio of cotton fiber to regenerated polyester of 90: 10-95: 5 and the content of core yarn of 10-30 percent;
decorating the yarns: the fine and short wool is treated by the anti-felting finishing agent and then is made into wool roving by adopting a semi-worsted process, the yarn number is 2-5 Nm, and the content of the decorative yarn is 70-85%;
yarn fixing: 70D/24F regenerated nylon with the solid yarn content of 2-5 percent; wherein the content of the first and second substances,
the etherification degree of the cotton fibers is 0.28-0.4%, and carbon nanotubes are grafted;
the anti-felting finishing agent comprises: the silk fibroin/polyvinyl alcohol composite material comprises a core material consisting of silk fibroin and polyvinyl alcohol and a wall material consisting of cucurbit [6] urea and carboxymethyl chitosan, wherein the mass ratio of the core material to the wall material is 1: 1.4-1.8.
The invention uses cotton/regenerated terylene three-color dot yarn as core yarn, wool roving as decorative yarn, and regenerated nylon as solid yarn to prepare environment-friendly wool knot colored dot fancy yarn, the color dot yarn is combined with the wool roving, the finished fancy yarn has both color dots and three-dimensional knots, the color matching is more flexible, compared with the common fancy yarn, the fancy yarn provided by the invention is fiber type knot yarn, the hand feeling is softer and fluffy, the elasticity is good, the strength is high, the wear resistance is excellent, the lasting anti-felting property and the antistatic property are realized.
In some embodiments, the cotton fiber grafted carbon nanotube is prepared by the following method:
1) adding the carbon nano tube into a mixed solution of concentrated sulfuric acid/concentrated nitric acid, heating to 50-60 ℃, preserving heat for 2-3 hours, and then dialyzing and drying to obtain an acidified carbon nano tube;
2) soaking cotton fibers in sufficient alkaline solution for 10-30 min at room temperature to swell the cotton fibers, adding ethylene oxide, heating to 40-60 ℃ for carrying out a first etherification reaction for 30-60 min, heating to 80-90 ℃ for carrying out a second etherification reaction for 0.5-2 h, cooling to below 40 ℃ after the reaction is finished, adding glacial acetic acid and glyoxal, centrifuging, washing and drying after the neutralization is finished to obtain etherified cotton fibers;
3) mixing acidified carbon nanotubes and fatty glyceride, adding the mixture into deionized water with the weight being 30-40 times of that of the mixture, performing ultrasonic dispersion for 25-30 min to obtain a carbon nanotube dispersion solution, soaking etherified cotton fibers in the carbon nanotube dispersion solution, performing microwave treatment at 45-50 ℃ for 0.5-4 h, performing heat preservation treatment at 55-60 ℃ for 15-40 s after the treatment is finished, and then cleaning and drying the mixture by using deionized water to obtain the cotton fiber grafted carbon nanotubes.
Further, in the step 1), the mixing volume ratio of the concentrated sulfuric acid to the concentrated nitric acid in the concentrated sulfuric acid/concentrated nitric acid mixed solution is 3-4: 1.
Further, in the step 1), the drying temperature is 70-80 ℃.
Further, in the step 2), the alkaline solution is a potassium tert-butoxide/urea mixed solution, the mass fraction of the potassium tert-butoxide is 5-20%, and the mass fraction of the urea is 3-5%.
Further, in the step 2), the weight ratio of the ethylene oxide to the etherified cotton fibers is 0.12-0.18: 1.
Further, in the step 2), the addition amounts of the glacial acetic acid and the glyoxal are respectively 0.15-0.2 and 0.05-0.2 of the cotton fiber.
Further, in the steps 2) and 3), the drying temperature is 40-50 ℃.
Further, in the step 3), the adding weight ratio of the acidified carbon nanotubes, the fatty acid glyceride and the etherified cotton fibers is 2-2.5: 0.8-1: 10.
Further, in the step 3), the frequency of ultrasonic dispersion is 20-25 kHz, and the power density is 0.3-0.35W/cm2。
Further, in the step 3), the power of the microwave treatment is 300-500W.
According to the invention, the environment-friendly wool knot colored point fancy yarn is prepared by taking the three-color colored point yarn prepared from the cotton fiber subjected to grafting modification by the carbon nano tube and the regenerated terylene as the core yarn, and the carbon nano tube is uniformly adsorbed on the surface and in pores of the cotton fiber after the modification treatment of the cotton fiber, so that the cotton fiber becomes stiff and smooth and is not easy to deform, the hydrophilicity of the surface of the cotton fiber is reduced, the water shrinkage is reduced, and the tensile strength of the cotton fiber can be improved; the etherification degree of the cotton fiber is controlled, so that the cotton fiber has excellent spinnability, the product quality is improved, the final product has excellent tensile property and wear resistance, the wear resistance is more durable, and the pattern stability can be better maintained.
In some embodiments, the anti-felting finish comprises:
the core material comprises silk fibroin and polyvinyl alcohol, wherein the adding weight ratio of the silk fibroin to the polyvinyl alcohol is 2-3: 1;
the wall material comprises cucurbit [6] urea and carboxymethyl chitosan, and the adding weight ratio of the cucurbit [6] urea to the carboxymethyl chitosan is 1: 4-5.
In some embodiments, the above described anti-felting finish is prepared via the following process:
dissolving carboxymethyl chitosan in a glacial acetic acid solution until the final concentration is 3-6 wt%, then adding an emulsifier, silk fibroin and polyvinyl alcohol, uniformly stirring to obtain an emulsion, adjusting the pH to 4.5-5 with citric acid, stirring for 2-3 h at 45-50 ℃, then cooling to room temperature and standing for 1-2 h, adding cucurbit [6] urea, heating to 55-60 ℃, stirring for 1-2 h, cooling to room temperature, adjusting the pH to 9.5-10.0 with an ammonia water solution, and performing suction filtration and freeze drying to obtain the anti-felting finishing agent.
The anti-felting finishing agent provided by the invention can destroy cross-linking among the wool scale layers and form a film on the surface of the wool fiber, so that the scale layers are coated to reduce the directional friction effect of the fiber, the wool is endowed with excellent and durable anti-felting property, the surface damage to the wool fabric is small, the surface wettability of the wool can be improved, and the antistatic property of the wool can be improved; the addition of cucurbit [6] urea in the anti-felting finishing agent has a synergistic effect with chitosan, so that the anti-felting effect and the antistatic property can be further prolonged, and the abrasion resistance and the mechanical property of the fancy yarn are obviously enhanced.
Further, in the process of preparing the anti-felting finishing agent, the emulsifier is Tween-80 or OP-80, and the addition amount of the emulsifier is 1-3% of the mass of the carboxymethyl chitosan.
Further, in the process of preparing the anti-felting finishing agent, the stirring speed is 2000-3000 r/min.
Further, in the process of preparing the anti-felting finishing agent, the heating rate is 1-3 ℃/min.
Further, in the process of preparing the anti-felting finishing agent, the mass fraction of the sodium hydroxide solution is 5-20%.
Further, in the process of preparing the anti-felting finishing agent, the stirring speed is 600-1000 r/min.
Further, in the process of preparing the anti-felting finishing agent, the freeze drying temperature is-80 to-60 ℃.
Subject two, subject one said wool knot colored point fancy yarn preparation method of environmental protection, comprising:
1) the method is characterized in that fine and short wool is used as a material, a semi-worsted processing technology is adopted to spin wool roving, and the process flow comprises the following steps: carding-drawing (three passes) -roving;
2) the environment-friendly wool knot colored point fancy yarn is processed on a three-roller twist machine, and the process parameters are as follows:
the rotating speed of the hollow ingot is 750-2500 r/min;
the rotating speed of the ring ingot is 500-1600 r/min;
the speed of the front roller is 140-200 r/min;
the speed of a core yarn roller is 50-70 r/min;
the speed of a rear roller is 18-24 r/min;
the inner twist is 680-700 twist/10 cm;
the outer twist is 310-350 twist/10 cm;
the drafting multiple is 25-30;
the knot output speed is 0.2-0.22 m/min;
3) putting the fancy yarns into a double-circulation yarn steaming box, steaming the fancy yarns at 75-80 ℃ for 30-50 min, naturally cooling the fancy yarns after the yarn steaming is finished, and then slowly rewinding to obtain the fancy yarns, wherein the rewinding speed is controlled to be below 300 m/min.
The invention takes wool roving made by semi-worsted as decorative yarn, takes cotton/regenerated terylene three-color dotted yarn as core yarn, and regenerated nylon as solid yarn, and is processed into environment-friendly wool knot color dotted fancy yarn by a three-roller fancy twister, which can fully embody the advantages of raw materials, the fiber is parallel and straight, the finished fancy yarn has high quality, the knots are full and elastic, and the hand feeling is softer; the colored point yarn is combined with the wool roving yarn, so that the fancy yarn has soft and fluffy hand feeling and has the characteristics of high mechanical property, good wear resistance and excellent corrosion resistance.
Further, in the step 1) of preparing the environment-friendly wool knot fancy yarn, the specific process parameters of carding are as follows:
the weight of the discharged strips is 18-23 g/5 m;
the strip discharging speed is 35-40 m/min;
the rotating speed of the cylinder is 300-350 r/min;
the rotating speed of the pricking roller is 640-700 r/min;
the doffer speed is 21-25 r/min;
the cover plate speed is 80-100 r/min.
Furthermore, the damage of the length of the short and fine wool after the carding process is within 2mm, and the wool grain is below 5 grains/g.
Further, in the step 1) of preparing the environment-friendly wool knot fancy yarn, the drawing process parameters are as follows:
together: the sliver yielding weight is 18-23 g/5m, the combined number is 6-8, and the back zone drafting multiple is 1.8-1.9;
secondly, combining: the sliver yielding weight is 14-20 g/5m, the combined number is 6-8, and the back zone drafting multiple is 1.2-1.3;
and thirdly: the sliver weight is 14-20 g/5m, the combined number is 6-8, and the back zone drafting multiple is 1.3-1.4;
strip discharging speed: 275-300 m/min, and the actual draft multiple is 5-7.
Furthermore, the evenness of the short and fine wool after the drawing process is lower than 4%.
Further, in the step 1) of preparing the environment-friendly wool knot fancy yarn, the specific process parameters of the roving are as follows:
the fixed amount of the rough yarn is 5-8 g/10 m;
the ingot speed is 700-800 r/min;
the drafting multiple of the rear zone is 1.2-1.4;
the central distance between the rollers is 58-62.5 mm/61-66.5 mm from the front area.
Furthermore, the evenness of the yarn of the short and fine wool after the roving process is lower than 8%, and the yarn count is 2-2.5 Nm.
Furthermore, the knot spacing of the environment-friendly wool knot colored fancy yarn is 5-10 cm, the knot spacing is randomly distributed, and the knot length is 0.6-0.8 cm.
By adopting the technical scheme, the environment-friendly wool knot colored point fancy yarn is prepared by taking cotton/regenerated terylene three-color point yarn as core yarn, wool roving as decorative yarn and regenerated nylon as solid yarn, so that the environment-friendly wool knot colored point fancy yarn has the following beneficial effects:
1) according to the invention, the environment-friendly wool knot colored point fancy yarn is processed by a three-roller fancy twisting machine, so that the advantages of raw materials can be fully embodied, the fibers are parallel and straight, the finished fancy yarn is high in quality, knots are full and elastic, and the hand feeling is softer; the colored point yarn is combined with the wool roving, so that the fancy yarn is soft and fluffy in hand feeling and has the characteristics of high mechanical property, good wear resistance and excellent corrosion resistance;
2) according to the invention, the anti-felting finishing agent is used for treating the short and fine wool, so that the cross-linking between wool scale layers can be destroyed, and a layer of film is formed on the surface of wool fiber, so that the scale layers are coated to reduce the directional friction effect of the fiber, the wool is endowed with excellent and durable anti-felting property, the surface damage to the wool fabric is small, the surface wettability of the wool is improved, and the antistatic property of the wool fabric is improved; the addition of cucurbit [6] urea in the anti-felting finishing agent has a synergistic effect with chitosan, so that the anti-felting effect and the antistatic property can be further prolonged, and the mechanical property and the wear resistance of the fancy yarn are obviously enhanced;
3) according to the invention, the environment-friendly wool knot colored point fancy yarn is prepared by taking the three-color colored point yarn prepared from the cotton fiber subjected to grafting modification by the carbon nano tube and the regenerated terylene as the core yarn, and the carbon nano tube is uniformly adsorbed on the surface and in pores of the cotton fiber after the modification treatment of the cotton fiber, so that the cotton fiber becomes stiff and smooth and is not easy to deform, the hydrophilicity of the surface of the cotton fiber is reduced, the water shrinkage is reduced, and the tensile strength of the cotton fiber can be improved; the etherification degree of the cotton fiber is controlled, so that the cotton fiber has excellent spinnability, the product quality is improved, the final product has excellent tensile property and wear resistance, the wear resistance is more durable, and the pattern stability can be better maintained.
Drawings
FIG. 1 is a FTIR plot of cotton fibers of example 1 of the present invention; wherein a represents the cotton fiber without modification treatment, and b represents the cotton fiber after modification treatment;
FIG. 2 shows mechanical properties of the environmentally friendly wool knot fancy yarn of the present invention; wherein B represents tensile strength, and C represents elongation at break;
FIG. 3 shows the wear resistance of the environmentally friendly wool knot fancy yarn of the present invention;
fig. 4 is an antistatic property (half life period of electrostatic voltage) of the eco-friendly wool knot fancy yarn of the present invention; b represents the initial electrostatic voltage half-life period, C represents the electrostatic voltage half-life period after 5 times of water washing;
FIG. 5 shows the antistatic property (charge surface density) of the environmentally friendly wool knot fancy yarn of the present invention; b represents the initial charge area density, and C represents the charge area density after 5-time washing with water.
Detailed Description
To make the features and effects of the present invention comprehensible to those skilled in the art, general description and definitions are made below with reference to terms and expressions mentioned in the specification and claims.
In the present invention, all percentages, parts, ratios, etc., are by weight unless otherwise indicated; additional instructions include, but are not limited to, "wt%" means weight percent, "mol%" means mole percent, "vol%" means volume percent.
In the present invention, the etherification degree of cotton fibers is measured by the following method: esterifying the modified cotton fiber with acetic acid to obtain an acetic acid modified cotton fiber, testing nuclear magnetic hydrogen spectrum, and calculating after peak separation.
The following describes the technical solution of the present invention in further detail with reference to the detailed description and the accompanying drawings.
Example 1: an environment-friendly wool knot fancy yarn:
the embodiment provides an environmental protection wool knot colored point fancy yarn, includes:
core yarn: the cotton/regenerated terylene three-color spot yarn with the yarn count of 30Ne has the mixing ratio of 95:5 of cotton and regenerated terylene and 20 percent of core yarn;
decorating the yarns: the wool roving with the yarn number of 5Nm and the content of the decorative yarn of 76 percent;
yarn fixing: 70D/24F regenerated nylon with 4 percent of solid yarn content.
The environment-friendly wool knot colored point fancy yarn is prepared by the following steps:
1) preparing cotton/regenerated polyester three-color colored point yarns:
adding 5g of carbon nano tube into a mixed solution of concentrated sulfuric acid and concentrated nitric acid with the mass fraction of 10% (the mixed volume ratio of the concentrated sulfuric acid to the concentrated nitric acid is 1:0.4), heating to 60 ℃, preserving heat for 3 hours, then dialyzing, and drying at 70 ℃ to obtain an acidified carbon nano tube; soaking 10g of cotton fiber in 20 percent sodium hydroxide/potassium tert-butoxide mixed solution at room temperature for 30min at a volume ratio of 1:0.3 to swell the cotton fiber, adding 1.6g of ethylene oxide, heating to 70 ℃ for etherification reaction for 40min, cooling to below 40 ℃, adding 1.5g of glacial acetic acid and 1g of glyoxal for neutralization reaction, and addingCentrifuging, washing and drying at 60 ℃ to obtain etherified cotton fibers; mixing 3g of acidified carbon nano tube and 1g of fatty glyceride, adding the mixture into 140g of deionized water, and performing ultrasonic dispersion (the frequency is 20kHz, and the power density is 0.3W/cm)2)30min to prepare carbon nano tube dispersion liquid, soaking 10g of etherified cotton fibers in the carbon nano tube dispersion liquid for 16h, drying at 60 ℃ after the end to obtain modified cotton fibers (the etherification degree is 0.32%), and then blending the modified cotton fibers with regenerated terylene to form 30Ne three-color colored point yarns;
2) preparing wool roving, wherein the process flow comprises the following steps: the method comprises the following steps of felt proofing treatment, carding, drawing (three paths), roving and the like, and specifically comprises the following steps:
2.1) dissolving 5g of carboxymethyl chitosan in 100g of glacial acetic acid solution, adding 0.1g of OP-80, 1.2g of silk fibroin and 2.5g of polyvinyl alcohol, and uniformly stirring at 3000r/min to obtain emulsion; adjusting pH to 5 with citric acid, heating to 50 deg.C, stirring for 3 hr, cooling to room temperature, and standing for 2 hr; adding 1g of cucurbit [6] uril, heating to 60 ℃, stirring for 2h at 800r/min, cooling to room temperature, adjusting the pH to 10.0 by using a sodium hydroxide solution with the mass fraction of 20%, and performing suction filtration and freeze drying at-60 ℃ to obtain an anti-felting finishing agent; soaking short and fine wool into the anti-felting finishing agent, soaking twice, rolling twice (the rolling residual rate is 80%, the soaking time is 1h), pre-baking for 5min at 80 ℃, and baking for 2min at 130 ℃ for later use;
2.2) a carding procedure, the specific technological parameters are as follows: the weight of the discharged strips is 21.5g/5m, the speed of the discharged strips is 37.8m/min, the rotating speed of a cylinder is 330r/min, the rotating speed of a rolling machine is 670r/min, the doffer speed is 23.5r/min, and the cover plate speed is 87 r/min;
2.3) drawing working procedures, wherein the specific technological parameters are as follows:
together: the weight of the drawn sliver is 21.3g/5m, the number of the drawn sliver is 8, and the drafting multiple of the back zone is 1.85;
secondly, combining: the weight of the drawn sliver is 18.5g/5m, the number of the drawn sliver is 8, and the back zone draft multiple is 1.25;
and thirdly: the weight of the drawn sliver is 14g/5m, the number of the drawn sliver is 8, and the drafting multiple of the back zone is 1.30;
strip discharging speed: 285m/min, the actual draft multiple is 7;
2.4) roving process, wherein the specific technological parameters are as follows:
the weight of the discharged sliver is 7.14g/10m, the ingot speed is 750r/min, the draft multiple of the back zone is 1.2, and the distance between the centers of the rollers is 60.5mm per the front zone and 64.5mm per the back zone;
3) processing the wool knots into the environment-friendly colored fancy yarns on a three-roller twist machine;
the rotating speed of the hollow spindle is 900r/min, the rotating speed of the ring spindle is 740r/min, the speed of the front roller is 160r/min, the speed of the core yarn roller is 60r/min, the speed of the rear roller is 18r/min, the internal twist of the yarn is 680 twist/10 cm, the external twist is 350 twist/10 cm, the drafting multiple is 28, and the output speed of the knot is 0.2 m/min;
4) putting the fancy yarn into a double-circulation yarn steaming box, steaming the fancy yarn for 30min at the temperature of 80 ℃, naturally cooling the fancy yarn after the yarn steaming is finished, and then rewinding at a low speed to obtain a finished product, wherein the rewinding speed is controlled at 200 m/min.
Example 2: another environment-friendly wool knot fancy yarn:
the present embodiment provides another environment-friendly wool knot colored point fancy yarn, which has substantially the same components and preparation method as those of embodiment 1, except that in the process of preparing the cotton/regenerated polyester three-color point yarn, the addition amount of ethylene oxide is 0.5g, and the etherification degree of cotton fibers is 0.15.
Example 3: another environment-friendly wool knot fancy yarn:
the present embodiment provides another environment-friendly wool knot colored point fancy yarn, which has substantially the same components and preparation method as those of embodiment 1, except that in the process of preparing the cotton/regenerated polyester three-color point yarn, the addition amount of ethylene oxide is 1g, and the etherification degree of cotton fibers is 0.28%.
Example 4: another environment-friendly wool knot fancy yarn:
the present embodiment provides another environment-friendly wool knot colored point fancy yarn, which has substantially the same components and preparation method as those of embodiment 1, except that in the process of preparing the cotton/regenerated polyester three-color point yarn, the addition amount of ethylene oxide is 2g, and the etherification degree of cotton fibers is 0.4%.
Example 5: another environment-friendly wool knot fancy yarn:
the present embodiment provides another environment-friendly wool knot colored point fancy yarn, which has substantially the same components and preparation method as those of embodiment 1, except that in the process of preparing the cotton/regenerated polyester three-color point yarn, the addition amount of ethylene oxide is 3g, and the etherification degree of cotton fibers is 0.48%.
Example 6: another environment-friendly wool knot fancy yarn:
this example provides another environmentally friendly wool knot fancy yarn, which has substantially the same composition and preparation method as example 1, except that in this example, the cotton fiber is not modified.
Example 7: another environment-friendly wool knot fancy yarn:
the present example provides another environment-friendly wool knot fancy yarn, which has substantially the same components and preparation method as those of example 1, except that in the process of preparing wool grit, silk fibroin and polyvinyl alcohol are used as the anti-felting finishing agent in the present example.
Example 8: another environment-friendly wool knot fancy yarn:
this example provides another environment-friendly wool knot fancy yarn, which has substantially the same components and preparation method as example 1, except that in this example, in the process of preparing wool grit, cucurbit [6] urea is not added in the anti-felting finishing agent.
Example 9: another environment-friendly wool knot fancy yarn:
this example provides another environment-friendly wool knot fancy yarn, which has substantially the same components and preparation method as example 1, except that chitosan is not added to the anti-felting finishing agent in the process of preparing wool grit in this example.
Example 10: another environment-friendly wool knot fancy yarn:
this example provides another eco-friendly wool knot fancy yarn, which has substantially the same composition and preparation method as example 1, except that the fine and short wool is not anti-felting treated in this example.
In order to verify the technical effect of the invention, the invention also provides the following experimental examples.
Experimental example 1: the quality indexes of the environment-friendly wool knot colored point fancy yarn are as follows:
the environment-friendly wool knot fancy yarn provided in examples 1 to 10 was used as an experimental subject, and the mass variation coefficient, the mass deviation, the single strength variation coefficient, and the evenness variation coefficient were tested with reference to FZ/T20017-2010 standard, and the test results are shown in table 1.
TABLE 1 quality index of environment-friendly wool knot colored fancy yarn
| Examples | Coefficient of mass variation/%) | Mass deviation/%) | Coefficient of variation alone/%) | Evenness of yarn/%) |
| 1 | 2.0 | 0.6 | 5.2 | 7.6 |
| 2 | 2.1 | 0.8 | 8.1 | 8.0 |
| 3 | 2.0 | 0.6 | 6.2 | 7.8 |
| 4 | 1.9 | -0.7 | 4.8 | 7.8 |
| 5 | 2.0 | 0.7 | 6.0 | 7.6 |
| 6 | 2.1 | 0.8 | 10.4 | 7.9 |
| 7 | 3.2 | -1.8 | 9.8 | 11.5 |
| 8 | 2.8 | 1.5 | 8.5 | 10.7 |
| 9 | 2.4 | 1.0 | 7.1 | 9.3 |
| 10 | 3.4 | 2.1 | 12.8 | 13.4 |
As shown in table 1, the environmental-friendly wool knot fancy yarn prepared by the method of the invention has the mass variation coefficient not higher than 3.45%, the maximum mass deviation of 2.1%, the single strength variation coefficient not higher than 12.8%, and the yarn evenness not higher than 13.4%, and all meet the industrial standard; from examples 7 to 10, it can be seen that the anti-felting treatment of the wool has a great influence on the quality variation coefficient, the quality deviation, the single strength variation coefficient and the evenness of the finished fancy yarn, and from examples 1 to 6, the cotton fiber is modified to contribute to improving the evenness degree of the finished fancy yarn, and the single strength variation coefficient is reduced.
Example 2: the tensile property of the environment-friendly wool knot colored point fancy yarn is as follows:
the environmental-friendly wool knot fancy yarn provided by the embodiments 1 to 10 is used as an experimental object, the tensile property of the environmental-friendly wool knot fancy yarn is tested by referring to the national standard GB/T3916 to 2013, and the test result is shown in FIG. 2.
As shown in the figure, the environment-friendly wool knot fancy yarn prepared by the method has high tensile strength and elongation at break, the fancy yarn prepared in the preferred embodiment 1 has the tensile strength of 22.6cN/tex, the elongation at break of 18.9 percent and excellent mechanical properties; it can also be seen that the core yarn in the fancy yarn plays a supporting role to ensure the strength of the yarn, so that the modification treatment of the cotton fiber (examples 1 to 6) has a large influence on the strength of the yarn, and compared with the unmodified cotton fiber (example 6), the tensile strength and the elongation of the modified cotton fiber are improved; the anti-felting treatment of the wool also has obvious influence on the mechanical property of the yarn, a layer of film is formed on the surface of the wool after the anti-felting treatment, the strength and the elongation of the yarn can be improved, and the cucurbit [6] urea and the carboxymethyl chitosan have a synergistic effect, so that the tensile strength and the elongation at break of the yarn can be improved.
Example 3: the wear-resisting property of the environment-friendly wool knot colored point fancy yarn is as follows:
the environment-friendly wool knot fancy yarn provided by the embodiment 1-10 is used as an experimental object, a Y731 type holding reasoner is adopted to test the wear resistance, the static tension of the yarn is 100cN, the self-pressure of the grinding piece is 240g, and the no-load reciprocating speed of the grinding piece is 140 times/min at room temperature. The test results are shown in fig. 3.
As shown in the figure, the environment-friendly wool knot fancy yarn prepared by the method has excellent wear resistance, is not easy to fluff and ball, and preferably has the wear resistance times of 2820 times and excellent wear resistance, and compared with wool which is not subjected to anti-felting treatment (example 10), the fancy yarn prepared by the wool which is subjected to the anti-felting treatment has more excellent wear resistance, so that the anti-felting finishing agent can form a layer of film on the surface of the wool to protect the wool, the wear resistance of the wool is improved, the wear resistance of the finished fancy yarn is improved, and the cucurbit [6] urea and the chitosan have synergistic effect, so that the wear resistance of the yarn can be obviously improved.
Example 4: the anti-felting performance of the environment-friendly wool knot colored point fancy yarn is as follows:
the environment-friendly wool knot fancy yarn provided in the embodiments 1 to 10 is used as an experimental object, the yarn is woven into a fabric according to a conventional process, the felt shrinkage of the fabric after being washed for 0 time, 10 times, 20 times and 30 times is tested by referring to the ISO6330 and IWSTMNO.31 standards, and the test results are shown in Table 2.
TABLE 2 anti-felting property of environment-friendly wool knot colored fancy yarn
As shown in table 2, the eco-friendly wool knot colored fancy yarn prepared by the method of the present invention has low felting rate, strong felting resistance and durable felting resistance, and after the fancy yarn provided in the preferred embodiment 1 is washed with water for 30 times, the felting rate is 9.42%, and good felting property can still be maintained; compared with wool without anti-felting treatment (example 10), the wool subjected to anti-felting treatment has lower felting rate and more excellent anti-felting performance, which shows that the anti-felting finishing agent is successfully coated on the surface of the wool, the directional friction effect of fibers is reduced, and the wool is endowed with excellent and durable anti-felting performance, and the data of examples 8 and 9 show that the chitosan and cucurbit [6] urea have a synergistic effect and are more beneficial to improving the anti-felting performance and the durable performance.
Experimental example 5: antistatic property of the environment-friendly wool knot colored point fancy yarn:
the environment-friendly wool knot colored point fancy yarn provided by the embodiments 1 to 10 is used as an experimental object, and according to GB/T12703.1-2008 part 1 of evaluation of textile electrostatic performance: electrostatic voltage half-life "and GB/T12703.2-2009 evaluation of textile Electrostatic Performance part 2: detecting charge surface density, testing initial electrostatic voltage half-life period, charge surface density, and initial half-life period and charge surface density after washing for 5 times, and drying to obtain detection results shown in FIGS. 4 and 5;
as shown in figures 4 and 5, the environment-friendly wool knot fancy yarn prepared by the method has excellent antistatic performance, the half life is shortest to be 0.74s, and the charge density is lowest to be 0.4C/m2After 5 times of washing, the half-life period and the charge density are not obviously changed, and the antistatic property is durable, so that the antistatic property is greatly improved after the wool is subjected to anti-felting treatment, probably because the anti-felting finishing agent is successfully coated on the surface of the wool, and the hydrophilic substance contained in the anti-felting finishing agent improves the hydrophilicity and the antistatic property of the wool.
Conventional operations in the operation steps of the present invention are well known to those skilled in the art and will not be described herein. The embodiments described above are intended to illustrate the technical solutions of the present invention in detail, and it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modification, supplement or similar substitution made within the scope of the principles of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An environment-friendly wool knot fancy yarn, which is characterized by comprising:
core yarn: the cotton/regenerated polyester three-color dotted yarn with the yarn number of 30-50 Ne has the ratio of cotton fiber to regenerated polyester of 90: 10-95: 5 and the content of core yarn of 10-30 percent;
decorating the yarns: the fine and short wool is treated by the anti-felting finishing agent and then is made into wool roving by adopting a semi-worsted process, the yarn number is 2-5 Nm, and the content of the decorative yarn is 70-85%;
yarn fixing: 70D/24F regenerated nylon with the solid yarn content of 2-5 percent; wherein the content of the first and second substances,
the etherification degree of the cotton fibers is 0.28-0.4%, and carbon nanotubes are grafted;
the anti-felting finishing agent comprises: the silk fibroin/polyvinyl alcohol composite material comprises a core material consisting of silk fibroin and polyvinyl alcohol and a wall material consisting of cucurbit [6] urea and carboxymethyl chitosan, wherein the mass ratio of the core material to the wall material is 1: 1.4-1.8.
2. The environmentally friendly wool knot fancy yarn of claim 1, wherein the cotton fiber grafted carbon nanotubes are prepared by the following method:
1) adding the carbon nano tube into a mixed solution of concentrated sulfuric acid/concentrated nitric acid, heating to 50-60 ℃, preserving heat for 2-3 hours, and then dialyzing and drying to obtain an acidified carbon nano tube;
2) soaking cotton fibers in sufficient alkaline solution for 10-30 min at room temperature to swell the cotton fibers, adding ethylene oxide, heating to 40-60 ℃ for carrying out a first etherification reaction for 30-60 min, heating to 80-90 ℃ for carrying out a second etherification reaction for 0.5-2 h, cooling to below 40 ℃ after the reaction is finished, adding glacial acetic acid and glyoxal, centrifuging, washing and drying after the neutralization is finished to obtain etherified cotton fibers;
3) mixing acidified carbon nanotubes and fatty glyceride, adding the mixture into deionized water with the weight being 30-40 times of that of the mixture, performing ultrasonic dispersion for 25-30 min to obtain a carbon nanotube dispersion solution, soaking etherified cotton fibers in the carbon nanotube dispersion solution, performing microwave treatment at 45-50 ℃ for 0.5-4 h, performing heat preservation treatment at 55-60 ℃ for 15-40 s after the treatment is finished, and then cleaning and drying the mixture by using deionized water to obtain the cotton fiber grafted carbon nanotubes.
3. The environment-friendly wool knot fancy yarn as claimed in claim 2, wherein the weight ratio of the added ethylene oxide to the added etherified cotton fiber is 0.12-0.18: 1.
4. The eco-friendly wool knot fancy yarn of any one of claims 1 to 3, wherein the anti-felting finish comprises:
the ratio of the fibroin to the polyvinyl alcohol in the core material is 2-3: 1;
the ratio of cucurbit [6] uril to carboxymethyl chitosan in the wall material is 1: 4-5.
5. The eco-friendly wool knot fancy yarn of claim 4, wherein the anti-felting finish is prepared by:
dissolving carboxymethyl chitosan in a glacial acetic acid solution until the final concentration is 3-6 wt%, then adding an emulsifier, silk fibroin and polyvinyl alcohol, uniformly stirring to obtain an emulsion, adjusting the pH to 4.5-5 with citric acid, stirring for 2-3 h at 45-50 ℃, then cooling to room temperature and standing for 1-2 h, adding cucurbit [6] urea, heating to 55-60 ℃, stirring for 1-2 h, cooling to room temperature, adjusting the pH to 9.5-10.0 with an ammonia water solution, and performing suction filtration and freeze drying to obtain the anti-felting finishing agent.
6. The method for preparing an environmentally friendly wool knot fancy yarn as claimed in any one of claims 1 to 5, comprising:
1) the method is characterized in that fine and short wool is used as a material, a semi-worsted processing technology is adopted to spin wool roving, and the process flow comprises the following steps: carding-drawing (three passes) -roving;
2) the environment-friendly wool knot colored point fancy yarn is processed on a three-roller twist machine, and the process parameters are as follows:
the rotating speed of the hollow ingot is 750-2500 r/min;
the rotating speed of the ring ingot is 500-1600 r/min;
the speed of the front roller is 140-200 r/min;
the speed of a core yarn roller is 50-70 r/min;
the speed of a rear roller is 18-24 r/min;
the inner twist is 680-700 twist/10 cm;
the outer twist is 310-350 twist/10 cm;
the drafting multiple is 25-30;
the knot output speed is 0.2-0.22 m/min;
3) putting the fancy yarns into a double-circulation yarn steaming box, steaming the fancy yarns at 75-80 ℃ for 30-50 min, naturally cooling the fancy yarns after the yarn steaming is finished, and then slowly rewinding to obtain the fancy yarns, wherein the rewinding speed is controlled to be below 300 m/min.
7. The method according to claim 6, characterized in that the specific process parameters of carding are: the weight of the discharged strips is 18-23 g/5m, the speed of the discharged strips is 35-40 m/min, the rotating speed of a cylinder is 300-350 r/min, the rotating speed of a rolling machine is 640-700 r/min, the speed of a doffer is 21-25 r/min, and the speed of a cover plate is 80-100 r/min.
8. The method according to claim 6 or 7, wherein the specific process parameters of drawing are:
together: the sliver yielding weight is 18-23 g/5m, the combined number is 6-8, and the back zone drafting multiple is 1.8-1.9;
secondly, combining: the sliver yielding weight is 14-20 g/5m, the combined number is 6-8, and the back zone drafting multiple is 1.2-1.3;
and thirdly: the sliver weight is 14-20 g/5m, the combined number is 6-8, and the back zone drafting multiple is 1.3-1.4;
strip discharging speed: 275-300 m/min, and the actual draft multiple is 5-7.
9. The method according to any of claims 6 to 8, wherein the specific process parameters of the roving are:
the fixed amount of the rough yarn is 5-8 g/10 m;
the ingot speed is 700-800 r/min;
the drafting multiple of the rear zone is 1.2-1.4;
the central distance between the rollers is 58-62.5 mm/61-66.5 mm from the front area.
10. The method of claim 9, wherein the roving has a count of 2 to 2.5Nm and a yarn evenness of less than 8%.
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