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CN-122013408-A - High-hygroscopicity composite natural-color cloth and preparation method thereof

CN122013408ACN 122013408 ACN122013408 ACN 122013408ACN-122013408-A

Abstract

The invention relates to the technical field of natural color cloth, in particular to high-hygroscopicity composite natural color cloth and a preparation method thereof, wherein the high-hygroscopicity composite natural color cloth comprises 40-50 parts of functional fibers, 30-35 parts of high-count combed cotton and 15-25 parts of lyocell fibers. According to the invention, the network provides a large number of capillary channels and a huge specific surface area, water molecules can be rapidly captured and conducted through physical adsorption and capillary action, silk fibroin is rich in hydrophilic amino acid, gallic acid molecules introduced through horseradish peroxidase catalytic grafting are additionally provided with a large number of phenolic hydroxyl groups, the strong polar groups can form strong hydrogen bonds with the water molecules, high-efficiency water locking is realized, and finally, genipin establishes a stable covalent bond network between colloid suspension and modified silk solution, a continuous and durable transmission path is provided for adsorption and diffusion of water, and the efficient moisture absorption effect of the composite natural color cloth is ensured.

Inventors

  • HU RENJIE
  • SHI XINHUI
  • ZHANG CHENG

Assignees

  • 浙江立马云山纺织股份有限公司

Dates

Publication Date
20260512
Application Date
20260309

Claims (10)

  1. 1. The high-hygroscopicity composite natural-color cloth is characterized by comprising, by weight, 40-50 parts of functional fibers, 30-35 parts of high-count combed cotton and 15-25 parts of lyocell fibers; The functional fiber is prepared by mixing colloid suspension and modified silk solution according to the mass ratio of 20-30:70-80, adding genipin accounting for 1% -1.5% of the total mass of the colloid suspension and the modified silk solution for crosslinking reaction, and performing wet spinning.
  2. 2. The high-hygroscopicity composite natural-color cloth according to claim 1, wherein the functional fiber is prepared by mixing a colloid suspension with a modified silk solution, adding genipin, stirring at 30-40 ℃ for 30-60min at 200-400rpm to obtain a primary spinning solution, placing the primary spinning solution in a vacuum deaerator, standing for 20-40min at-0.095 to-0.1 MPa, filtering by a 250 mesh screen to obtain a spinning solution, injecting the spinning solution into a spinning cylinder, conveying at 3-6mL/min, extruding through a spinneret plate with a pore diameter of 50-100 μm, entering into a coagulating bath containing 10-20wt% sodium sulfate aqueous solution, staying for 10-16s, controlling the temperature at 20-30 ℃ to obtain primary fibers, performing two-stage heat-drawing treatment on the primary fibers by a heat-drawing device, controlling the primary heat-drawing ratio at 20-25%, controlling the bath temperature at 50-55 ℃ and the secondary drawing ratio at 10-15%, raising the bath temperature to 70-75 ℃, subsequently placing the primary drawing solution at 50-70 ℃ to 50-70 ℃ and drying at a water-95 ℃ in a saturated functional oven, and finally placing the primary fiber in a saturated steam oven for 15 ℃ to obtain the functional fiber.
  3. 3. The preparation method of the high-hygroscopicity composite natural color cloth according to claim 1, wherein the preparation method of the colloidal suspension comprises the steps of cleaning, drying and crushing the sea squirt capsules, sieving the sea squirt capsules with a 60-100-mesh sieve to obtain sea squirt capsule coarse powder, mixing the sea squirt capsule coarse powder with 3-5wt% of sodium hydroxide according to a ratio of 1:10-20, stirring the mixture in a constant-temperature water bath at 80 ℃ for 2-3h at 100-300rpm, placing the mixture in a centrifuge for centrifugal treatment, collecting solids, repeatedly carrying out treatment and filtration for 2-4 times by adopting 3-5wt% of sodium hydroxide, washing the solids to be neutral by adopting deionized water, placing the mixture in an oven for drying at 60-80 ℃ to obtain a first intermediate, mixing the first intermediate with a mixed solvent according to a ratio of 1:10-30, heating the mixture in an oil bath to be 110 ℃ for 4-6h under the protection of nitrogen, mixing the reaction solution with ice water according to a ratio of 1:30, stirring the mixture with 800-1000rpm for 10-30min, centrifuging the mixture, collecting regenerated cellulose, repeatedly carrying out treatment by adopting 3-5wt% of sodium hydroxide, washing the solids, placing the mixture in a ball mill for washing the mixture in a range of the aqueous solution until the aqueous solution is equal to 400-400 rpm, ball milling the aqueous solution is obtained by ball milling the suspension, and washing the aqueous solution is obtained by the precipitation solution is obtained by washing the precipitation solution, and the precipitation solution is washed by ball milling the method, and the method is carried out until the precipitation solution is nearly comprises the suspension is washed by the steps of the aqueous solution is washed by the method, and the method is washed by washing and comprises the steps of the method.
  4. 4. The high-hygroscopicity composite grey cloth according to claim 3, wherein the mixed solvent is prepared by mixing choline chloride and oxalic acid according to a molar ratio of 1:1.2.
  5. 5. The high-hygroscopicity composite bunting according to claim 2, wherein in the preparation of the colloidal suspension, the dialysis step is to put the supernatant into a dialysis bag with a molecular weight cut-off of 10-12kDa and dialyze for 48-72h in flowing deionized water, and the mass ratio of the regenerated ascidian cellulose to the sodium hydroxide solution of 2-4wt% is 1:50-200.
  6. 6. The preparation method of the high-hygroscopicity composite natural color cloth according to claim 1, wherein the silk solution is prepared by adjusting the mass concentration of protein to 1-5% by using phosphate buffer solution with pH of 6.5-7 to obtain diluted silk solution, then adding gallic acid and horseradish peroxidase to mix to obtain a second intermediate, placing the second intermediate in a constant-temperature water bath shaker at 25-35 ℃, setting the rotating speed to 100-150rpm, keeping the whole process away from light, dropwise adding 0.03% hydrogen peroxide solution, wherein the molar ratio of the 0.03% hydrogen peroxide solution to the gallic acid is 0.8-1.2:1, after the addition is completed within 2-4 hours, cooling in an ice water bath to obtain a third intermediate, placing the third intermediate in a dialysis bag, placing in a cold storage at 4 ℃ to dialyze for 2-3 days in 50 times of deionized water, and simultaneously keeping the magnetic stirring state for 10-20rpm for 3-4 times each day to obtain the modified silk solution.
  7. 7. The method for preparing the silk solution comprises the steps of selecting waste silk, shearing the waste silk, placing the cut silk into a sodium carbonate aqueous solution with the concentration of 0.5wt%, boiling the cut silk for 30-40min at the temperature of 100 ℃, filtering and collecting solids, washing the cut silk by adopting deionized water with the concentration of 60-70 ℃ until effluent is neutral, placing the cut silk into a blow box, drying the cut silk at the temperature of 60-70 ℃ to obtain silk fibers, mixing the silk fibers and a lithium bromide aqueous solution with the concentration of 9.3mol/L in a reaction bottle according to the mass ratio of 1:8-12, placing the silk fibers into a water bath pot with the concentration of 60-65 ℃ and stirring the silk solution at the temperature of 200-300rpm, taking out the silk solution to cool the silk solution to room temperature, dialyzing the silk solution in deionized water with the concentration of more than 50 times the volume for 2-3 days, changing the deionized water 3-4 times each day, keeping the magnetic stirring state at the speed of 10-20rpm, immersing the dialysis bag into a polyvinylpyrrolidone solution with the concentration of 20-30wt% at the temperature of 4 ℃, standing the dialysis bag, weighing the silk fibers until the silk solution with the concentration of 8% is regularly observed, and obtaining silk solution after the silk solution reaches the concentration of 8% after the time.
  8. 8. The high-hygroscopicity composite grey cloth according to claim 7, wherein the mass ratio of the diluted silk solution to the gallic acid to the horseradish peroxidase is 100:2.8:0.3, the molecular weight cut-off of a dialysis bag is 10-12kDa in the preparation process of the silk solution, and the molecular weight of the polyvinylpyrrolidone solution is more than or equal to 20kDa.
  9. 9. The high-hygroscopicity composite grey cloth according to claim 8, wherein the molecular weight cut-off of the dialysis bag is 12-14kDa during the preparation of the modified silk solution.
  10. 10. The method for preparing the high-hygroscopicity composite grey cloth according to claims 1 to 9, which is characterized by comprising the following steps: Firstly, cutting functional fibers into short fibers with the diameter of 36-38mm by a cutter, preprocessing the short fibers and spinning oiling agents according to the mass ratio of 100:0.5-1, respectively opening the preprocessed functional fibers, high count combed cotton and lyocell fibers to remove impurities, then putting the functional fibers into a cotton mixer for fully mixing, and carding the functional fibers into raw strips by a carding machine; Drawing the raw sliver into a cooked sliver through 3-4 times, spinning into a spun yarn with the linear density of 14.5-18.5tex through the working procedures of roving and spun yarn in sequence, controlling the yarn twist coefficient to be 280-320, and removing defects of the spun yarn through a bobbin winder to prepare bobbin yarn; step three, preparing a warp beam with uniform tension from cone yarns by adopting a batch warping process, treating the warp beam by using composite sizing agent slurry yarns, controlling the sizing rate to be 8-12% and the moisture regain to be 6-8%, wherein the composite sizing agent is prepared by compounding starch, polyvinyl alcohol and polyacrylic acid sizing agent according to the mass ratio of 5.5:3.0:1.5; Taking a sizing warp beam as warp yarn and a cone yarn as weft yarn, adopting an air jet loom to perform plain weaving, setting the warp and weft density to be 290-310 warp yarns/10 cm, setting the weft density to be 230-250 weft yarns/10 cm, and obtaining grey cloth with uniform structure at the weaving speed of 400-500 r/min; Step five, desizing the grey cloth, alkali scouring to remove impurities, washing the grey cloth with hot water to be neutral, treating the desizing with 3-5g/L hydrogen peroxide at 50-60 ℃ for 20-30 minutes, controlling the alkali scouring temperature at 55-60 ℃, then carrying out tentering setting with 80-85 ℃ hot air for 10-15min, and controlling the gate width preshrinking rate at 3-5%, thus completing the preparation of the composite grey cloth.

Description

High-hygroscopicity composite natural-color cloth and preparation method thereof Technical Field The invention relates to the technical field of natural color cloth, in particular to high-hygroscopicity composite natural color cloth and a preparation method thereof. Background The quality of the grey cloth directly determines the effect of subsequent dyeing and finishing and the quality of a final finished product, and the high-quality grey cloth requires flat and smooth cloth cover, fewer nep impurities, uniform warp and weft arrangement, consistent tension and good internal strength. In the prior art, the traditional cotton fiber has limited moisture absorption capacity and rate, and under the conditions of perspiration or high humidity of a human body, the insufficient moisture absorption can directly lead to the fact that moisture can not be quickly and largely absorbed by the fabric, so that the problems of obvious wet feeling and easy generation of smoldering feeling are caused, and the dry comfort of wearing is seriously affected. Based on the above, the invention provides the composite natural color cloth with high hygroscopicity and the preparation method thereof. Disclosure of Invention The invention aims to provide a high-hygroscopicity composite natural-color cloth and a preparation method thereof, the composite natural color cloth prepared by the invention not only has better moisture absorption performance, but also has excellent antibacterial performance. The invention provides a high-hygroscopicity composite natural color cloth which comprises, by weight, 40-50 parts of functional fibers, 30-35 parts of high-count combed cotton and 15-25 parts of lyocell fibers; The functional fiber is prepared by mixing colloid suspension and modified silk solution according to the mass ratio of 20-30:70-80, adding genipin accounting for 1% -1.5% of the total mass of the colloid suspension and the modified silk solution for crosslinking reaction, and performing wet spinning. Preferably, the preparation method of the functional fiber comprises the steps of mixing colloid suspension and modified silk solution, adding genipin, stirring at 30-40 ℃ for 30-60min at 200-400rpm to obtain primary spinning solution, placing the primary spinning solution in a vacuum deaerator, standing for 20-40min at-0.095-0.1 MPa, filtering through a 250 mesh screen to obtain spinning solution, injecting the spinning solution into a spinning cylinder, conveying at 3-6mL/min, extruding through a spinneret plate with the aperture of 50-100 mu m, entering into a coagulating bath containing 10-20wt% sodium sulfate aqueous solution, standing for 10-16s, controlling the temperature to be 20-30 ℃ to obtain primary fiber, carrying out two-stage hot drawing treatment on the primary fiber through a hot drawing device, controlling the primary drawing rate to be 20-25%, controlling the bath temperature to be 50-55 ℃ during drawing, elevating the bath temperature to be 70-75 ℃ during drawing, subsequently drying the primary fiber in a drying oven with the bath temperature to be lower than 10% during the initial drying in a drying oven with the bath temperature being 50-70 ℃ and finally placing the primary fiber in a steam box at the temperature being lower than 10 ℃ during the setting oven for 5-95 ℃ and carrying out the saturated treatment. Preferably, the preparation method of the colloidal suspension comprises the steps of cleaning, drying and crushing the sea squirt capsules, sieving the sea squirt capsules with a 60-100-mesh sieve to obtain sea squirt capsule coarse powder, mixing the sea squirt capsule coarse powder with 3-5wt% of sodium hydroxide according to a ratio of 1:10-20, stirring the mixture in a constant-temperature water bath at a temperature of 80 ℃ for 2-3 hours at a speed of 100-300rpm, centrifuging the mixture in a centrifuge, collecting solids, repeatedly treating and filtering the solids with 3-5wt% of sodium hydroxide for 2-4 times, washing the solids with deionized water to be neutral, drying the solids in an oven at a temperature of 60-80 ℃ to obtain a first intermediate, mixing the first intermediate with a mixed solvent according to a ratio of 1:10-30, heating the first intermediate with an oil bath to a temperature of 110 ℃, stirring the mixture for 4-6 hours under nitrogen protection, mixing the reaction liquid with ice water according to a ratio of 1:30, stirring the mixture with 800-1000rpm for 10-30 minutes, centrifuging the mixture, collecting regenerated cellulose sediment, repeatedly washing the regenerated cellulose with ethanol and water until the regenerated cellulose is in a ratio of 800-1000rpm, washing the regenerated cellulose with deionized water is close to a ratio of 120-400 rpm, ball milling the slurry is obtained after the water is washed to obtain a suspension, ball milling suspension is washed with the slurry at a ratio of 120-400 to obtain a ratio of the sea squirt suspension, and the slurry is