CN112111829B - Fiber preparation device, antibacterial banana core fiber yarn and preparation method thereof - Google Patents

Fiber preparation device, antibacterial banana core fiber yarn and preparation method thereof Download PDF

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Publication number
CN112111829B
CN112111829B CN202010868717.3A CN202010868717A CN112111829B CN 112111829 B CN112111829 B CN 112111829B CN 202010868717 A CN202010868717 A CN 202010868717A CN 112111829 B CN112111829 B CN 112111829B
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antibacterial
banana core
banana
core fiber
vertical rack
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CN112111829A (en
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张伟
谢单单
魏发云
王海楼
戴家木
李素英
张瑜
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Nantong University
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Nantong University
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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
    • D02G3/44—Yarns or threads characterised by the purpose for which they are designed
    • D02G3/449—Yarns or threads with antibacterial properties
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01B—MECHANICAL TREATMENT OF NATURAL FIBROUS OR FILAMENTARY MATERIAL TO OBTAIN FIBRES OF FILAMENTS, e.g. FOR SPINNING
    • D01B1/00—Mechanical separation of fibres from plant material, e.g. seeds, leaves, stalks
    • D01B1/10—Separating vegetable fibres from stalks or leaves
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01C—CHEMICAL OR BIOLOGICAL TREATMENT OF NATURAL FILAMENTARY OR FIBROUS MATERIAL TO OBTAIN FILAMENTS OR FIBRES FOR SPINNING; CARBONISING RAGS TO RECOVER ANIMAL FIBRES
    • D01C1/00—Treatment of vegetable material
    • D01C1/02—Treatment of vegetable material by chemical methods to obtain bast fibres
    • 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
    • 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
    • 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
    • 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
    • D06M2101/02—Natural fibres, other than mineral fibres
    • D06M2101/04—Vegetal fibres
    • 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
    • D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
    • D10B2201/01—Natural vegetable fibres
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2401/00—Physical properties
    • D10B2401/02—Moisture-responsive characteristics
    • D10B2401/022—Moisture-responsive characteristics hydrophylic
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2401/00—Physical properties
    • D10B2401/13—Physical properties anti-allergenic or anti-bacterial
    • 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
    • D10B2501/00—Wearing apparel
    • 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
    • D10B2503/00—Domestic or personal
    • D10B2503/06—Bed linen
    • 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
    • D10B2509/00—Medical; Hygiene

Abstract

The invention provides a fiber preparation device, an antibacterial banana core fiber yarn and a preparation method thereof, wherein the preparation method comprises the following steps: s10 preparing banana core fiber through a fiber preparation device and freeze-drying the banana core fiber to obtain a first fiber; s20, soaking the first fibers in alkali liquor for degumming to obtain second fibers; s30, placing the second fibers into an antibacterial finishing liquid for dipping treatment, and freeze-drying to obtain antibacterial banana core fibers; and S40, spinning the antibacterial banana core fiber to obtain the antibacterial banana core fiber yarn. According to the fiber preparation device, the antibacterial banana core fiber yarn and the preparation method thereof, the mechanically extracted banana core fiber is subjected to degumming and antibacterial pretreatment and then is subjected to spinning processing, so that the structure of the banana core fiber can be well maintained, the spinnability of the banana core fiber is improved, the excellent antibacterial performance of the banana core fiber is endowed, and the application field of the banana core fiber is widened.

Description

Fiber preparation device, antibacterial banana core fiber yarn and preparation method thereof
Technical Field
The invention relates to the technical field of preparation of banana fiber materials, in particular to a fiber preparation device, an antibacterial banana core fiber yarn and a preparation method thereof.
Background
The plantain has large planting area in China, wide distribution area and rich plantain core source, is not developed and utilized completely all the time, and has considerable waste amount in China and even all over the world. In fact, the banana core fiber obtained by separating from the banana core has very high practical value, such as good antibacterial and bacteriostatic effects on bacterial propagules and fungi, good hygroscopicity, cool and refreshing effects and the like. The banana core fiber is a renewable and recyclable natural plant fiber, comprehensively utilizes agricultural resources in China, is beneficial to ecological protection, simultaneously meets the requirements of people for advocating nature, pursuing comfort and health care, and has very wide market prospect.
The musa basjoo core fiber is extracted by means of microbial degradation, artificial silk drawing, chemical degumming and the like, the fermentation range of the musa basjoo core fiber is difficult to control during microbial fermentation, the structural form of the fiber is difficult to avoid being damaged, and the fiber is easy to break; although the fiber prepared by artificial spinning has a complete structure and is soft and comfortable, the extraction process is complicated, and the extraction efficiency is low; in the chemical degumming project, although the extraction efficiency of the fiber is improved, a large amount of chemical reagents are needed, so that the pollution is high, the energy consumption is high, the cost is high, and the basic physical properties of the extracted banana core fiber are difficult to ensure not to be damaged. Therefore, the banana core fiber and its textile products cannot be widely used.
Disclosure of Invention
In order to solve the problems, the invention provides a fiber preparation device, an antibacterial banana core fiber yarn and a preparation method thereof, wherein the banana core fiber extracted mechanically is subjected to degumming and antibacterial pretreatment and then is subjected to spinning processing, so that the structure of the banana core fiber can be well maintained, the spinnability of the banana core fiber is improved, meanwhile, the banana core fiber is endowed with excellent antibacterial performance, and the application field of the banana core fiber is widened.
In order to achieve the above purpose, the invention adopts a technical scheme that:
a fiber preparation device comprises a first vertical rack, a second vertical rack and a motor, wherein the first vertical rack, the second vertical rack and the motor are arranged on a transverse base, and the first vertical rack and the second vertical rack are parallel to each other; the transverse base is provided with a sliding device, the second vertical rack is arranged on the transverse base through the sliding device, the transverse base is provided with a net conveying curtain, and the net conveying curtain is positioned between the first vertical rack and the second vertical rack; the first vertical rack is provided with a feeding cylinder, a first triangular gripper, a first cutting mechanism and a fixed stretching plate, the first triangular gripper is arranged on one surface, far away from the second vertical rack, of the first vertical rack, and the first cutting mechanism is arranged on one surface, close to the second vertical rack, of the first vertical rack; the second vertical rack is provided with a discharging barrel, a second triangular gripper, a second cutting mechanism, a transmission mechanism and a movable stretching plate, the second triangular gripper is arranged on one surface, far away from the first vertical rack, of the second vertical rack, and the second cutting device is arranged on one surface, close to the first vertical rack, of the second vertical rack; and an output shaft of the motor is connected with the transmission mechanism through a coupler.
The invention also provides a preparation method of the antibacterial banana core fiber yarn based on the fiber preparation device, which comprises the following steps: s10 preparing banana core fiber through a fiber preparation device and freeze-drying the banana core fiber to obtain a first fiber; s20, placing the first fibers in alkali liquor for soaking and degumming, and then washing with water at the temperature of 40 +/-5 ℃ to obtain second fibers; s30, placing the second fibers into an antibacterial finishing liquid for dipping treatment, and freeze-drying to obtain antibacterial banana core fibers; and S40, carrying out spinning processing on the antibacterial banana core fiber through the procedures of cotton mixing, impurity removal, cotton carding, combing, drawing, roving and spinning to obtain the antibacterial banana core fiber yarn.
Further, the step S10 includes the following steps: s11, feeding fresh and mature banana cores into the feeding barrel, and enabling the banana cores to move forwards under the action of the transmission mechanism; s12, when the banana core extends out of the fixed stretching plate by a certain length, the first triangular gripper and the second triangular gripper fix the banana core and drive the banana core to rotate at a constant speed, and simultaneously drive the first cutting mechanism and the second cutting mechanism to work to enable the banana core phloem to form a notch; s13, after the banana core is stretched to a certain length by the movable stretching plate, the movable stretching plate stops working, and the first cutting mechanism and the second cutting mechanism cut the banana core fiber downwards; s14, gathering the banana core fiber cut by the cutting machine into the net conveying curtain, and intensively treating the waste material on one side of the movable stretching plate through a discharge hole; and S15 repeating S11-S14 to obtain more banana core fiber, and freeze-drying the obtained banana core fiber to obtain the first fiber for later use.
Further, the antibacterial finishing liquid is chitosan-silver ion antibacterial finishing liquid, citric acid is used as a solvent to dissolve chitosan and compound Ag+And (4) obtaining.
Further, the step S30 includes: s31, fully dissolving chitosan in 0.7-1% of citric acid to prepare a chitosan solution with the mass fraction of 0.25-0.85%; adding Ag + into the chitosan solution and rapidly stirring to obtain chitosan-silver ion antibacterial finishing liquid; s32, the second fibers are immersed into the chitosan-silver ion antibacterial finishing liquid for completely immersing for 1-3 times, 5-30min each time, and the antibacterial banana core fibers are obtained after freeze drying is carried out on the finished banana core fibers.
Further, in the step S20, the alkali liquor is 10% -15% of sodium bicarbonate, the first fibers are placed in the alkali liquor for soaking at the temperature of 80-100 ℃ for 2-5 hours, and the mass ratio of the banana core fibers to the alkali liquor is 1: 20-1: 60.
Further, the temperature of the freeze drying is-80 ℃ to-60 ℃, and the time of the freeze drying is 24-48 h.
Furthermore, the stretching distance range of the movable stretching plate is 0-500 mm, and the stretching speed is 50-100 mm/min.
Further, the relative humidity of the environment where the cotton carding process is located is 40% -60%; when the cotton slivers formed by cotton carding are subjected to a drawing process, the number of the cotton slivers is 4-8; in the roving process, the dry weight of the roving is 2-9 g/10m, the drafting multiple is 3-10 times, the metric twist coefficient of the roving is 25-50, and the spindle speed is 500-900 r/min; the dry weight of the spun yarn in the spinning process is 1.02-6.28 g/100m, the drafting is 10-50 times, the spindle speed is 7000-10000 r/min, and the twist is 250-1100 twists/m; in the spooling process, the winding speed is 600-1000 m/min.
The invention also provides antibacterial banana core fiber yarn which is prepared by using any one of the preparation methods of the antibacterial banana core fiber yarn.
Compared with the prior art, the technical scheme of the invention has the following advantages:
(1) according to the fiber preparation device, the antibacterial banana core fiber yarn and the preparation method thereof, the mechanical extraction device for the banana core fiber is designed according to the principle of manually extracting the fiber, and compared with the current situation of manual extraction in the prior art, the mechanization of the fiber extraction process is realized, so that the extraction efficiency of the banana core fiber is improved, the preparation steps of the banana core fiber are simplified, the labor cost is reduced, the prepared banana core fiber is ensured to be complete in structure and less in damage, the prepared banana core fiber is soft in texture, and the spinnability is high.
(2) According to the fiber preparation device, the antibacterial banana core fiber yarn and the preparation method thereof, the mechanically extracted banana core fiber is subjected to degumming and antibacterial pretreatment and then is subjected to spinning processing, colloidal substances on the banana core fiber can be effectively removed, the damage of the banana core fiber is reduced, the structure of the banana core fiber can be well maintained, the spinnability of the banana core fiber is improved, meanwhile, the banana core fiber is endowed with excellent antibacterial performance, the application field of the banana core fiber is widened, and compared with the existing chemical degumming, the antibacterial banana core fiber yarn does not need to use a large amount of chemical reagents, and is small in pollution, small in energy consumption and high in preparation cost.
(4) According to the fiber preparation device, the antibacterial banana core fiber yarn and the preparation method thereof, the banana core euphoria yarn obtained by the preparation method has good hygroscopicity, comfortableness and antibacterial property, and the banana core fiber is used as a natural green material, has better biocompatibility and wide source, so that the yarn is wide in application range, can be used for producing high-grade clothes, T-shirts, scarves, bedding products, medical hygienic products and the like, and has great economic benefits and social benefits.
Drawings
The technical solution and the advantages of the present invention will be apparent from the following detailed description of the embodiments of the present invention with reference to the accompanying drawings.
FIG. 1 is a view showing a structure of a fiber producing apparatus according to an embodiment of the present invention;
FIG. 2 is a side view of a first triangular gripper and a first cutting mechanism in accordance with one embodiment of the present invention;
fig. 3 is a flow chart of a method for preparing the antibacterial banana core fiber yarn according to an embodiment of the present invention.
Reference numbers in the figures:
the device comprises a transverse base 1, a net conveying curtain 11, a first vertical rack 2, a feeding barrel 21, a first triangular gripper 22, a first cutting mechanism 23, a fixed stretching plate 24, a second vertical rack 3, a discharging barrel 31, a second triangular gripper 32, a second cutting mechanism 33, a movable stretching plate 34, a motor 4, a sliding device 5, a newly-grown banana core fiber 6 and a transmission mechanism 7.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment provides a fiber preparation device, as shown in fig. 1-2, comprising a first vertical frame 2, a second vertical frame 3 and a motor 4 which are arranged on a transverse base 1, wherein the first vertical frame 2 and the second vertical frame 3 are parallel to each other; set up slider 5 on the horizontal base 1, the vertical frame of second 3 passes through slider 5 sets up on the horizontal base 1, the vertical frame of second 3 passes through slider 5 is in slide on the horizontal base 1, the realization will banana core fibre is tensile, slider 5 is preferred to include spout and cylinder, and the cylinder drives under control system's control slider 5 slides. The horizontal base 1 is provided with a net conveying curtain 11, and the net conveying curtain 11 is positioned between the first vertical rack 2 and the second vertical rack 3. The output shaft of motor 4 pass through the shaft coupling with drive mechanism 7 is connected, drive mechanism 7 is used for driving the banana core is tensile motion.
The first vertical rack 2 is provided with a feeding cylinder 21, a first triangular gripper 22, a first cutting mechanism 23 and a fixed stretching plate 24, the first triangular gripper 22 is arranged on one surface, far away from the second vertical rack 3, of the first vertical rack 2, and the first cutting mechanism 23 is arranged on one surface, near the second vertical rack 3, of the first vertical rack 2;
the second vertical rack 3 is provided with a discharge barrel 31, a second triangular gripper 32, a second cutting mechanism 33, a transmission mechanism 7 and a movable stretching plate 34, the second triangular gripper 32 is arranged on one surface, far away from the first vertical rack 2, of the second vertical rack 3, and the second cutting device is arranged on one surface, close to the first vertical rack 2, of the second vertical rack 3;
the invention also provides a preparation method of the antibacterial banana core fiber yarn based on the fiber preparation device, which comprises the following steps as shown in figure 3: s10 banana core fiber is prepared by a fiber preparation device and freeze-dried to obtain a first fiber. S20, the first fiber is placed in alkali liquor for degumming, and then washed by water at 40 +/-5 ℃ to obtain a second fiber. S30, the second fiber is placed in the antibacterial finishing liquid for dipping treatment, and freeze drying is carried out to obtain the antibacterial banana core fiber. And S40, carrying out spinning processing on the antibacterial banana core fiber through the procedures of cotton mixing, impurity removal, cotton carding, combing, drawing, roving and spinning to obtain the antibacterial banana core fiber yarn.
The step S10 includes the following steps: s11 fresh and ripe banana core is fed into the feeding barrel 21, and the banana core moves forwards under the action of the transmission mechanism 7. S12 when the banana core stretches out fixed tensile board 24 beyond certain length, by first triangle tongs 22 and second triangle tongs 32 will the banana core is fixed and drives the banana core is at the uniform velocity rotated, drives simultaneously first cutting mechanism 23 and the notch appears in the work messenger banana core phloem of second cutting mechanism 33. S13 the tensile board 34 of activity is stretched the banana core to certain length back the tensile board 34 stop work of activity, first cutting mechanism 23 and second cutting mechanism 33 is down to surely get banana core fibre. The stretching distance range of the movable stretching plate 34 is 0-500 mm, preferably 100mm, 200mm, 300mm, 400mm or 500mm, and the stretching speed is 50-100 mm/min, preferably 50mm/min, 60mm/min, 70mm/min, 80mm/min, 90mm/min or 100 mm/min. S14, collecting the banana core fiber cut by the cutting machine to the net conveying curtain 11, and intensively treating the waste on one side of the movable stretching plate 34 by a discharge hole; and S15 repeating S11-S14 to obtain more banana core fiber, and freeze-drying the obtained banana core fiber to obtain the first fiber for later use. The freeze drying temperature is-80 ℃ to-60 ℃, preferably-80 ℃, 75 ℃, 70 ℃, 65 ℃ or-60 ℃, and preferably the freeze drying time is 24-48 h, preferably 24h, 36h or 48 h.
In the step S20, the alkali solution is 10% to 15% by mass of sodium bicarbonate, the mass concentration of the sodium bicarbonate is preferably 10%, 11%, 12%, 13%, 14% or 15%, the first fiber is placed in the alkali solution to be soaked at 80 to 100 ℃ for 2 to 5 hours, preferably at 80 ℃, 85 ℃,90 ℃, 95 ℃ or 100 ℃, preferably for 2 hours, 3 hours, 4 hours or 5 hours, and the mass ratio of the banana core fiber to the alkali solution is 1:20 to 1:60, preferably 1:20, 1:30, 1:40, 1:50 or 1: 60.
The antibacterial finishing liquid is chitosan-silver ion antibacterial finishing liquid, citric acid is used as a solvent to dissolve chitosan and compound Ag+And (4) obtaining. The step S30 includes: s31, fully dissolving chitosan in 0.7-1% of citric acid to prepare a chitosan solution with the mass fraction of 0.25-0.85%; adding Ag into chitosan solution+And stirring rapidly to obtain chitosan-silver ion antibacterial finishing liquid; s32, the second fiber is immersed into the chitosan-silver ion antibacterial finishing liquid for completely immersing for 1-3 times, 5-30min, preferably 5min, 10min, 15min, 20min, 25min or 30min each time, and the antibacterial banana core fiber is obtained after freeze drying is carried out on the finished banana core fiber. The temperature of the freeze drying is-80 ℃ to-60 ℃, and the preferable freeze drying time is 24-48 h.
The relative humidity of the environment where the cotton carding process is located in the step S40 is 40% -60%; when the cotton slivers formed by cotton carding are subjected to a drawing process, the number of the cotton slivers is 4-8; in the roving process, the dry weight of the roving is 2-9 g/10m, the drafting multiple is 3-10 times, the metric twist coefficient of the roving is 25-50, and the spindle speed is 500-900 r/min; the dry weight of the spun yarn in the spinning process is 1.02-6.28 g/100m, the drafting is 10-50 times, and the spindle speed is
7000-10000 r/min, and 250-1100 twists per meter; in the spooling process, the winding speed is 600-1000 m/min.
The invention also provides the antibacterial banana core fiber yarn prepared by using the antibacterial banana core fiber yarn and the preparation method thereof.
Example 1
S11, feeding fresh and mature banana cores into the feeding barrel 21, and enabling the banana cores to move forwards under the action of the transmission mechanism 7;
s12, when the banana core extends 10mm beyond the fixed stretching plate 24, the first triangular gripper 22 and the second triangular gripper 32 fix the banana core and drive the banana core to rotate at a constant speed, and simultaneously drive the first cutting mechanism 23 and the second cutting mechanism 33 to work so that the banana core phloem is cut;
s13 the tensile board 34 of activity is with the banana core tensile to 30mm after the tensile board 34 stop work of activity, first cutting mechanism 23 and the banana core fibre is down cut to second cutting mechanism 33, the tensile distance scope of the tensile board 34 of activity is 50mm, and stretching speed is 50 mm/min.
S14, collecting the banana core fiber cut by the cutting machine to the net conveying curtain, and intensively treating the waste on one side of the movable stretching plate 34 by a discharge hole; and
s15 repeating S11-S14 to obtain more banana core fiber, and freeze-drying the obtained banana core fiber to obtain the first fiber for standby. The freeze drying temperature is-80 deg.C, and the freeze drying time is 24 h.
S20, placing the first fibers into sodium bicarbonate with the mass fraction of 10% to be soaked for degumming, wherein the soaking temperature is 80 ℃, and the soaking time is 5 hours; the mass ratio of the musa basjoo core fiber to the alkali liquor is 1: 20. Then washing with water at 40 +/-5 ℃ to obtain second fibers;
s31, fully dissolving chitosan in 0.7% citric acid to prepare a chitosan solution with the mass fraction of 0.25%; adding Ag into chitosan solution+And stirring rapidly to obtain chitosan-silver ion antibacterial finishing liquid;
s32, the second fibers are immersed into the chitosan-silver ion antibacterial finishing liquid and are completely immersed for 5min, and the antibacterial banana core fibers are obtained after freeze drying of the finished banana core fibers. The freeze drying temperature is-80 deg.C, and the freeze drying time is 24 h.
S40, spinning the antibacterial banana core fiber through cotton carding, combing, drawing, roving and spinning procedures to obtain the antibacterial banana core fiber pure spinning yarn. The relative humidity of the environment in which the cotton carding process is carried out is 40%; when cotton slivers formed by cotton carding are subjected to a drawing process, the number of the cotton slivers is 4; in the roving process, the dry weight of roving is 2g/10m, the drafting multiple is 3 times, the metric twist coefficient of the roving is 25, the spindle speed is 500 r/min; the dry weight of the spun yarn in the spinning process is 1.02g/100m, the drafting is 10 times, the spindle speed is 7000r/min, and the twist is 250 twists/m; in the spooling process, the winding speed is 600 m/min.
Example 2
S11, feeding fresh and mature banana cores into the feeding barrel 21, and enabling the banana cores to move forwards under the action of the transmission mechanism 7;
s12, when the banana core extends 30mm beyond the fixed stretching plate 24, the first triangular gripper 22 and the second triangular gripper 32 fix the banana core and drive the banana core to rotate at a constant speed, and simultaneously drive the first cutting mechanism 23 and the second cutting mechanism 33 to work so that the banana core phloem is cut;
s13 the activity is stretched the board 34 and is stretched the banana core to 50mm after the activity is stretched the board 34 stop work, first cutting mechanism 23 and the banana core fibre is down cut to second cutting mechanism 33, the tensile distance scope of activity is 100mm, and stretching speed is 75 mm/min.
S14, collecting the banana core fiber cut by the cutting machine to the net conveying curtain, and intensively treating the waste on one side of the movable stretching plate 34 by a discharge hole; and
s15 repeating S11-S14 to obtain more banana core fiber, and freeze-drying the obtained banana core fiber to obtain the first fiber for standby. The freeze drying temperature is-70 deg.C, and the freeze drying time is 36 h.
S20, placing the first fibers into sodium bicarbonate with the mass fraction of 12% to be soaked for degumming, wherein the soaking temperature is 90 ℃, and the soaking time is 4 hours; the mass ratio of the musa basjoo core fiber to the alkali liquor is 1: 40. Then washing with water at 40 +/-5 ℃ to obtain second fibers;
s31, fully dissolving chitosan in 0.9% citric acid to prepare a chitosan solution with the mass fraction of 0.45%; adding Ag into chitosan solution+And stirring rapidly to obtain chitosan-silver ion antibacterial finishing liquid;
s32, the second fibers are immersed into the chitosan-silver ion antibacterial finishing liquid and are completely immersed for 15min, and the antibacterial banana core fibers are obtained after freeze drying of the finished banana core fibers. The freeze drying temperature is-70 deg.C, and the freeze drying time is 36 h.
S40, spinning the antibacterial banana core fiber through cotton carding, combing, drawing, roving and spinning procedures to obtain the antibacterial banana core fiber pure spinning yarn. The relative humidity of the environment in which the cotton carding process is carried out is 60 percent; when cotton slivers formed by cotton carding are subjected to a drawing process, the number of the cotton slivers is 6; in the roving process, the dry weight of roving is 5g/10m, the drafting multiple is 7 times, the metric twist coefficient of the roving is 35, and the spindle speed is 650 r/min; the dry weight of spun yarn in the spinning process is 3.35g/100m, the drafting is 20 times, the spindle speed is 8500r/min, and the twist is 650 twists/m; in the spooling process, the winding speed is 800 m/min.
Example 3
S11, feeding fresh and mature banana cores into the feeding barrel 21, and enabling the banana cores to move forwards under the action of the transmission mechanism 7;
s12, when the banana core extends 50mm beyond the fixed stretching plate 24, the first triangular gripper 22 and the second triangular gripper 32 fix the banana core and drive the banana core to rotate at a constant speed, and simultaneously drive the first cutting mechanism 23 and the second cutting mechanism 33 to work so that the banana core phloem is cut;
s13 the activity is stretched the board 34 and is stretched the banana core to 80mm after the activity is stretched the board 34 stop work, first cutting mechanism 23 and the banana core fibre is down cut to second cutting mechanism 33, the tensile distance scope of activity is 200mm, and stretching speed is 100 mm/min.
S14, collecting the banana core fiber cut by the cutting machine to the net conveying curtain, and intensively treating the waste on one side of the movable stretching plate 34 by a discharge hole; and
s15 repeating S11-S14 to obtain more banana core fiber, and freeze-drying the obtained banana core fiber to obtain the first fiber for standby. The freeze drying temperature is-60 deg.C, and the freeze drying time is 48 h.
S20, placing the first fibers in sodium bicarbonate with the mass fraction of 15% to be soaked for degumming, wherein the soaking temperature is 100 ℃, and the soaking time is 2 hours; the mass ratio of the musa basjoo core fiber to the alkali liquor is 1: 60. Then washing with water at 40 +/-5 ℃ to obtain second fibers;
s31, fully dissolving chitosan in 1% citric acid to prepare a chitosan solution with the mass fraction of 0.85%; adding Ag into chitosan solution+And stirring rapidly to obtain chitosan-silver ion antibacterial finishing liquid;
s32, the second fibers are immersed into the chitosan-silver ion antibacterial finishing liquid and are completely immersed for 30min, and the antibacterial banana core fibers are obtained after freeze drying of the finished banana core fibers. The freeze drying temperature is-60 deg.C, and the freeze drying time is 48 h.
S40, spinning the antibacterial banana core fiber through cotton carding, combing, drawing, roving and spinning procedures to obtain the antibacterial banana core fiber pure spinning yarn. The relative humidity of the environment in which the cotton carding process is carried out is 60 percent; when cotton slivers formed by cotton carding are subjected to a drawing process, the number of the cotton slivers is 8; in the roving process, the dry weight of roving is 9g/10m, the drafting multiple is 10 times, the metric twist coefficient of the roving is 50, and the spindle speed is 900 r/min; the dry weight of spun yarn in the spinning process is 6.28g/100m, the drafting is 50 times, the spindle speed is 10000r/min, and the twist is 1100 twist/m; in the spooling process, the winding speed is 1000 m/min.
The performance of the musa basjoo core fiber yarn obtained by the method is shown in the following table 1-2, the obtained musa basjoo core fiber is excellent in material performance, and the antibacterial rate of staphylococcus aureus, escherichia coli and candida albicans is over 99%.
TABLE 1 physical Properties of the banana core fiber yarn obtained by the apparatus for producing the fiber of the present invention
Figure GDA0003103108970000091
Figure GDA0003103108970000101
TABLE 2 antibacterial test data results of banana core fiber yarn prepared by the present invention
Bacterial strain Antibacterial ratio (%)
Staphylococcus aureus 99.97
Escherichia coli 99.98
Candida albicans 99.96
The above description is only an exemplary embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes that are transformed by the content of the present specification and the attached drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. A fiber preparation device is characterized by comprising a first vertical rack, a second vertical rack and a motor which are arranged on a transverse base, wherein the first vertical rack and the second vertical rack are parallel to each other; the transverse base is provided with a sliding device, the second vertical rack is arranged on the transverse base through the sliding device, the transverse base is provided with a net conveying curtain, and the net conveying curtain is positioned between the first vertical rack and the second vertical rack;
the first vertical rack is provided with a feeding cylinder, a first triangular gripper, a first cutting mechanism and a fixed stretching plate, the first triangular gripper is arranged on one surface, far away from the second vertical rack, of the first vertical rack, and the first cutting mechanism is arranged on one surface, close to the second vertical rack, of the first vertical rack;
the second vertical rack is provided with a discharging barrel, a second triangular gripper, a second cutting mechanism, a transmission mechanism and a movable stretching plate, the second triangular gripper is arranged on one surface, far away from the first vertical rack, of the second vertical rack, and the second cutting mechanism is arranged on one surface, close to the first vertical rack, of the second vertical rack;
and an output shaft of the motor is connected with the transmission mechanism through a coupler.
2. A method for preparing an antibacterial banana core fiber yarn based on the fiber preparation device of claim 1, comprising the steps of:
s10, preparing the banana core fiber through a fiber preparation device and freeze-drying the banana core fiber to obtain a first fiber;
s20, placing the first fibers in alkali liquor for soaking and degumming, and then washing with water at the temperature of 40 +/-5 ℃ to obtain second fibers;
s30, placing the second fibers into an antibacterial finishing liquid for dipping treatment, and freeze-drying to obtain antibacterial banana core fibers; and
s40, carrying out spinning processing on the antibacterial banana core fiber through the procedures of cotton mixing, impurity removal, cotton carding, combing, drawing, roving and spinning to obtain the antibacterial banana core fiber yarn.
3. The method for preparing antibacterial banana core fiber yarn according to claim 2, wherein the step S10 includes the steps of:
s11, feeding fresh and mature banana cores into the feeding barrel, and enabling the banana cores to move forwards under the action of the transmission mechanism;
s12, when the banana core extends out of the fixed stretching plate by a certain length, the first triangular gripper and the second triangular gripper fix the banana core and drive the banana core to rotate at a constant speed, and simultaneously drive the first cutting mechanism and the second cutting mechanism to work to enable the phloem of the banana core to form a notch;
s13, after the banana core is stretched to a certain length by the movable stretching plate, the movable stretching plate stops working, and the first cutting mechanism and the second cutting mechanism downwards cut the banana core fiber;
s14, gathering the cut banana core fibers in the net conveying curtain, and intensively treating waste materials on one side of the movable stretching plate through a discharge hole; and
s15, repeating S11-S14 to obtain more banana core fibers, and freeze-drying the obtained banana core fibers to obtain first fibers for later use.
4. The antibacterial banana core fiber yarn and the preparation method thereof according to claim 2, wherein the antibacterial finishing liquid is chitosan-silver ion antibacterial finishing liquid, and is obtained by dissolving chitosan by using citric acid as a solvent and compounding Ag +.
5. The method for preparing antibacterial banana core fiber yarn according to claim 3, wherein the step S30 includes:
s31, fully dissolving chitosan in 0.7-1% of citric acid to prepare a chitosan solution with the mass fraction of 0.25-0.85%; adding Ag + into the chitosan solution and rapidly stirring to obtain chitosan-silver ion antibacterial finishing liquid;
s32, immersing the second fibers in the chitosan-silver ion antibacterial finishing liquid for completely immersing for 1-3 times, 5-30min each time, and freeze-drying the finished banana core fibers to obtain the antibacterial banana core fibers.
6. The preparation method of the antibacterial banana core fiber yarn according to claim 2, wherein the alkali liquor in the step S20 is 10% -15% by mass of sodium bicarbonate, the first fiber is placed in the alkali liquor for soaking at a temperature of 80-100 ℃ for 2-5 hours, and the mass ratio of the banana core fiber to the alkali liquor is 1: 20-1: 60.
7. The preparation method of the antibacterial banana core fiber yarn according to claim 2, wherein the freeze drying temperature is-80 ℃ to-60 ℃, and the freeze drying time is 24-48 h.
8. The method for preparing antibacterial banana core fiber yarn according to claim 3, wherein the stretching distance of the movable stretching plate is 0-500 mm, and the stretching speed is 50-100 mm/min.
9. The preparation method of the antibacterial banana core fiber yarn according to claim 2, wherein the relative humidity of the environment in which the cotton carding process is carried out is 40% -60%; when the cotton slivers formed by cotton carding are subjected to a drawing process, the number of the cotton slivers is 4-8; in the roving process, the dry weight of the roving is 2-9 g/10m, the drafting multiple is 3-10 times, the metric twist coefficient of the roving is 25-50, and the spindle speed is 500-900 r/min; the dry weight of the spun yarn in the spinning process is 1.02-6.28 g/100m, the drafting is 10-50 times, the spindle speed is 7000-10000 r/min, and the twist is 250-1100 twists/m; in the spooling process, the winding speed is 600-1000 m/min.
10. An antibacterial banana core fiber yarn characterized by being produced by the method for producing an antibacterial banana core fiber yarn according to any one of claims 2 to 9.
CN202010868717.3A 2020-08-26 2020-08-26 Fiber preparation device, antibacterial banana core fiber yarn and preparation method thereof Active CN112111829B (en)

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