CN116043341A

CN116043341A - Triaxial electrostatic spinning spiral hollow antistatic elastic fiber and preparation method thereof

Info

Publication number: CN116043341A
Application number: CN202310176145.6A
Authority: CN
Inventors: 陈金鹏; 张晓瑜; 方德生; 刘宇清; 林琴
Original assignee: Suzhou Hongxu New Material Technology Co ltd
Current assignee: Wujiang Kemao Textile Co ltd
Priority date: 2023-02-28
Filing date: 2023-02-28
Publication date: 2023-05-02
Anticipated expiration: 2043-02-28
Also published as: CN116043341B

Abstract

The invention discloses a triaxial electrostatic spinning spiral hollow antistatic elastic fiber and a preparation method thereof, comprising the following steps: and (3) feeding the spiral hollow base material into a texturing machine, and carrying out triaxial electrostatic spinning when the spiral hollow base material reaches a false twisting disc, wherein the spiral hollow base material sequentially passes through a first false twisting disc and a second false twisting disc during spinning, a first spray head for electrostatic spinning is arranged at the first false twisting disc, and a second spray head and a third spray head are respectively arranged at two sides of the second false twisting disc, wherein the first spinning solution is a bonding layer spinning solution, and the second spinning solution and the third spinning solution are respectively a conducting layer spinning solution and a moisture absorption layer spinning solution. The invention creatively combines the texturing process with the electrostatic spinning, so that the spiral hollow base material, the bonding layer, the conductive layer and the moisture absorption layer are combined more tightly, and the elasticity, the fluffiness, the warmth retention property and the antistatic property are improved through the cooperation of the layers.

Description

Triaxial electrostatic spinning spiral hollow antistatic elastic fiber and preparation method thereof

Technical Field

The invention belongs to the technical field of spinning, and particularly relates to a triaxial electrostatic spinning spiral hollow antistatic elastic fiber and a preparation method thereof.

Background

With the improvement of living standard, people's pursuit of clothing has not only been limited to appearance, but is comfortable to wear. In autumn and winter, air is cool and dry, static electricity is frequent, so that clothes can be fluffed and pilled, the appearance and comfort of the clothes are affected, and meanwhile, the static electricity also can harm the health of a human body. Most of the existing antistatic modes are antistatic finishing or adding antistatic layers, but fabrics finished by adopting antistatic agents have antistatic performance, but the properties such as hand feeling, air permeability and fluffiness are reduced to a certain extent, so that the comfort of use is seriously affected, and the antistatic layers are arranged on the fabrics in a coating, bonding and other modes and are easy to fall off, so that the antistatic performance is directly affected.

The electrostatic spinning has become one of the main ways to prepare nanometer fiber material effectively because of its advantages of simple manufacturing device, low spinning cost, various spinnable materials, controllable process, etc. However, the traditional electrostatic spinning fiber has a single structure, low service performance and incapability of adapting to complex environments, and the electrostatic spinning fiber is usually a densely-stacked film material, has low bulk and porosity, and limits the application in the cold-proof and warm-keeping fields.

Disclosure of Invention

In order to solve the problems, the invention provides a preparation method of a spiral hollow antistatic elastic fiber adopting triaxial electrostatic spinning, the prepared antistatic elastic fiber conductive layer and the moisture absorption layer have excellent effects on static elimination, and meanwhile, the elastic process and the hollow structure are combined to provide good elasticity, strength, fluffiness, warmth retention property and comfort.

The first object of the invention is to provide a method for preparing a triaxial electrostatic spinning spiral hollow antistatic elastic fiber, which comprises the following steps:

s1, conveying a spiral hollow substrate into a texturing machine;

s2, when the spiral hollow base material reaches the false twisting disc, three-axis electrostatic spinning is carried out, and when spinning is carried out, the spiral hollow base material sequentially passes through a first false twisting disc and a second false twisting disc (the arrow in FIG. 1 indicates the movement direction of the fiber), a first nozzle of electrostatic spinning is arranged at the first false twisting disc, and a second nozzle and a third nozzle are respectively arranged at two sides of the second false twisting disc; wherein,,

the spinning solution in the first nozzle is a bonding layer spinning solution, and the spinning solutions in the second nozzle and the third nozzle are respectively a conductive layer spinning solution and a moisture absorption layer spinning solution.

Further, the spiral hollow base material is provided with at least two holes penetrating axially, namely the structure of the base material is at least double-spiral hollow.

Further, the spiral hollow base material is made of terylene.

Further, the spiral hollow base material is prepared by punching holes along the axial direction of the base material, and rotating the two ends in opposite directions in the hot stretching process.

Further, the tie layer dope is selected from a polyvinyl alcohol dope or a cyanoacrylate dope.

Further, the conductive layer spinning solution is selected from chitosan/carbon nanotube mixed spinning solution or multi-wall carbon nanotube (MWCNTs) spinning solution.

Further, the hygroscopic layer spinning solution is selected from polyvinylpyrrolidone spinning solution or hydroxypropyl cellulose (HPC) spinning solution.

Further, the second nozzle and the third nozzle are symmetrically arranged on two sides of the second false twisting disc.

Further, the rotating speeds of the first false twist disc and the second false twist disc are 180-190r/min.

The second object of the invention is to provide the triaxial electrospun spiral hollow antistatic elastic fiber obtained by the preparation method.

The invention has the beneficial effects that:

in order to have the performances of static resistance and high elasticity, the invention creatively combines the texturing equipment with the electrostatic spinning equipment, and the electrostatic spinning is performed at the false twisting disc. With the rotation of the false twisting disc, the yarns are continuously twisted, and each layer is in closer connection and is not easy to fall off by continuously rotating and interlacing. More importantly, compared with the traditional electrostatic spinning technology, the elastic fiber prepared by the invention has better stretchability and elasticity, better fluffiness during recovery and strong heat retention.

Drawings

FIG. 1 is a front view of the main apparatus of the antistatic elastic fiber prepared according to the present invention;

FIG. 2 is a bottom view of the main device of the antistatic elastic fiber prepared according to the present invention;

FIG. 3 is a schematic drawing of the spinning structure of the present invention;

fig. 4 is a schematic structural diagram of conventional direct electrospinning.

Reference numerals illustrate:

1. false twist tray; 11. a first false twist tray; 12. a second false twist tray; 2. a first spray head for electrostatic spinning; 3. a second spray head for electrostatic spinning; 4. a third spray head for electrostatic spinning; 5. a first spinning solution; 6. a second spinning solution; 7. a third spinning solution; 8. antistatic elastic fibers; 81. a composite layer prepared by electrostatic spinning of the first spinning solution, the second spinning solution and the third spinning solution; 82. a substrate.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the invention and practice it.

The scheme of the invention is as follows:

in one embodiment of the invention, double-spiral hollow polyester fiber is used as a base material, the surface of the double-spiral hollow polyester fiber is modified by adopting a triaxial electrostatic spinning technology, the first spinning solution is polyvinyl alcohol (PVA) solution, the second spinning solution is chitosan/carbon nano tube solution, the third spinning solution is polyvinylpyrrolidone (PVP) solution, the double-spiral hollow polyester fiber is placed into a texturing machine, an electrostatic spinning device is arranged at a false twisting disc of the texturing machine, the surface of the double-spiral hollow polyester fiber is modified by using the electrostatic spinning machine (the spinning solution of a core layer is PVA solution, the middle layer is chitosan/carbon nano tube solution, and the sheath layer is PVP solution), the double-spiral hollow polyester fiber is produced by using the texturing machine and the electrostatic spinning device, the double-spiral hollow polyester fiber is provided with a texturing machine silk frame, and silk is led to a first hot box, a false twisting disc, a second hot box and other devices and wound on a collecting roller.

The preparation method comprises the following steps:

(1) Preparing the double-helix terylene hollow fiber. Preparing a prefabricated member with two holes of 6-9 mm in the axial direction by using PET particles through hot pressing and punching, and then rotating and stretching the prefabricated member through a wire drawing tower with the top of 180-220 ℃, the middle of 240-260 ℃ and the bottom of 130-150 ℃;

(2) Blending DMSO and PVA (with molecular weight of 125000) to prepare 14-20wt% (w/v) PVA spinning solution;

(3) Preparing chitosan/carbon nano tube spinning solution, and mixing the chitosan spinning solution with the carbon nano tube spinning solution in an amount of 2-4wt%;

(4) Preparing PVP spinning solution, adding PVP (molecular weight is 56000) into absolute ethyl alcohol, oscillating and stirring to obtain PVP spinning solution. And finally, transferring the prepared PVA spinning solution, chitosan/carbon nanotube spinning solution and PVP spinning solution into an electrostatic spinning injector to carry out electrostatic spinning on the false twist disc.

Wherein:

the inner diameter of the first spray head of the electrostatic spinning machine is 0.3mm, and the outer diameter is 0.4mm; the inner diameter of the second spray head is 0.6mm, and the outer diameter is 0.7mm; the third nozzle has an inner diameter of 0.8mm and an outer diameter of 0.9mm, the first nozzle is positioned beside the first false twisting disk, and the second nozzle and the third nozzle are respectively positioned on the left side and the right side of the second false twisting disk and are positioned right above the first nozzle.

The texturing machine speed is 680-720m/h, and the false twist disc rotating speed is 180-190r/min. The distance from the electrostatic spinning nozzle to the false twisting disc is 6-8cm, and the advancing speed is 0.003-0.004 mm/s. The distance from the spray head of electrostatic spinning to the false twisting disc is 6-8cm, and as the distance from the spray head to the false twisting disc is increased, the time for stretching and thinning the jet in the spinning process is prolonged, and the jet can be deposited on the false twisting disc only for a long time, so that the fiber diameter is reduced. The fiber diameter is a key factor influencing the thermal insulation performance of the material, the finer the fiber diameter is, the more the number of fibers in a unit space is, the smaller the diameter of formed holes is, the more static air can be contained, and the thermal insulation performance of the material is improved. In addition, the speed of the false twist disc is synchronous with the speed of the electrostatic spinning propelling pump, so that the over-molding of the fiber is facilitated, and the performance can be optimized.

In the chitosan/carbon nano tube spinning solution, the volume ratio of the chitosan solution to the carbon nano tube solution is 2-3: 4 to 5.

The third shaft flow rate of the electrostatic spinning is 0.6-0.9mL/h, the second shaft flow rate is 0.2-0.4mL/h, and the first shaft flow rate is 0.1-0.3mL/h.

The parameters of the elasticizer are as follows: the stretching multiple is 1.805-1.105, the ratio of the surface speed of the friction disc to the speed of the strand leaving the false twister is 1.78-1.81, and the twisting tension T1/untwisting tension T2 is 0.78-0.80.

In one embodiment of the invention, the preform gauge is 25×25×150mm ³ The hot press device is a vulcanizing furnace, the temperature is 242 ℃, the pressure is 10MPa, and the hot press time is 30min.

In the process of hot stretching of the prefabricated part, preheating is firstly carried out for 30min in an upper temperature area, then an automatic prefabricated part feeding device and an automatic fiber winding program are started, the upper end of the prefabricated part is connected with a guiding rotary rod, the rotating speed is 5-7 r/s, the lower end of the prefabricated part is connected with a lower wire drawing guiding rod, the feeding speed of the prefabricated part is 3mm/min, and the stretching speed is 85cm/min.

The chitosan/carbon nano tube spinning solution is prepared by mixing 2-4wt% chitosan solution prepared by blending trifluoroacetic acid, dichloromethane and chitosan and carbon nano tubes prepared by blending 0.125-0.875 g sodium dodecyl benzene sulfonate and 0.35-1.2 g carbon nano tubes.

The following explains the arrangement of the present invention by taking the above as an example:

(1) The spiral hollow polyester fiber is used as a base material, and the spiral hollow polyester fiber structure contains a large amount of static air, so that the light elasticity, the good moisture permeability and the comfortable warm-keeping effect can be brought to the fabric.

(2) In the electrostatic spinning layer, polyvinyl alcohol (PVA) is used as a first spinning solution, and the PVA coated on the surface has a bonding effect, so that the outer layer of the fiber is better bonded and coated with the base material and the inner layer; the chitosan/carbon nano tube solution is used as a second spinning solution, the Carbon Nano Tubes (CNTs) have excellent conductivity which is 10000 times of copper, and are often used as a conductive auxiliary agent, the chitosan macromolecules contain hydrophilic amino and hydroxyl, and positive charges carried by the chitosan molecules can move in the solution to conduct charges, so that static charge dissipation is promoted, static voltage is reduced, and a good antistatic effect is achieved; the polyvinyl pyrrolidone (PVP) solution is a third spinning solution, and is a nonionic water-soluble high molecular compound, has excellent solubility, can be dissolved in water and various organic solvents, has good hygroscopicity, and the adsorbed moisture can improve the conductivity of the fiber surface, so that the electrostatic leakage capacity is enhanced, the attenuation rate of electrostatic charge is greatly accelerated, and the electrostatic charge accumulation is effectively limited. The conductive layer and the moisture absorption layer have a remarkable effect of removing static electricity.

(3) And setting electrostatic spinning at the false twist tray. First, a first spray head of electrostatic spinning sprays PVA solution on the outer side of a false twist disc, PVA is rotated along with the false twist disc and transferred and wrapped on a central polyester yarn to form a PVA bonding layer. The hollow polyester yarn with the PVA bonding layer moves downwards to reach a second false twisting disc, and meanwhile, a second three spray heads of electrostatic spinning spray oppositely on the left and right of the second false twisting disc respectively and rotate along with the false twisting disc, so that the chitosan/carbon nano tube solution and PVP are wrapped on the PVA bonding layer.

(4) The spinning mode of the invention is obviously different from the traditional electrostatic spinning directly on the substrate. The direct electrostatic spinning can only spray on one surface, the hollow fiber moves from top to bottom without the rotation action of a false twisting disc, the sprayed silk can only spray on two sides of the hollow fiber, and the yarn is not twisted. The silk is sprayed onto the false twist tray through electrostatic spinning, and then as the false twist tray rotates, almost all surfaces of the hollow polyester fiber pass through the twist tray are stuck with PVA and are more favorable for the adhesion of PVP and chitosan/carbon nano tubes. The brought effect advantages are as follows: (1) by continuously rotating the interlacing, the wrapping surface is more, the wrapping is more compact and is less prone to falling off, and (2) the stretchability elasticity is better and the recovery fluffiness is better. The spinning structure of the invention is shown in figure 3, and the structure of direct electrostatic spinning is shown in figure 4.

Example 1

Firstly, preparing the double-helix hollow polyester fiber. The PET pellets (RE 5220 NC 010) were first placed in a vacuum oven and vacuum dried at 65℃for 24 hours to remove moisture from the feedstock and prevent excessive air bubbles from developing in subsequent experiments. Then the dried PET particles are put into a rectangular section with the internal specification of 25 to 150mm ³ In the mold, heating is carried out in a 242 ℃ vulcanizing furnace, the PET particles are tightly extruded and solidified at the pressure of 10MPa during the heating, the mold is taken out after 30min, cooling and demolding are carried out, and the solid PET prefabricated member is obtained. Two holes of 8mm are drilled along an oblique diagonal of the cross section of the preform by a drilling machine. The upper end of the prefabricated part is connected with a rotary rod through a copper wire, the rotary rod is arranged on the top of the wire drawing tower, the prefabricated part is just positioned in the wire drawing tower, the lower end of the prefabricated part is connected with a lower stretching guide rod through the copper wire, and the temperature of the wire drawing tower is set to be 200 ℃ at the top, 246 ℃ at the middle and 137 ℃ at the bottom. After 30min of pre-heat softening, the preform was pulled down and the rotating motor was turned on, the rotational speed was set at 7r/s. Preheating the prefabricated member through an upper temperature zone, necking the prefabricated member in a middle temperature zone, and annealing and cooling the prefabricated member in a lower temperature zone to finally prepare the PET fiber with the double-helix hollow structure. And fixing the fiber on a collecting roller, and starting an automatic feeding and automatic winding program of the prefabricated member. The feeding speed was set at 3mm/min and the drawing speed was set at 85cm/min, and the hot drawn fiber was passed through a drawing roller placed under a drawing tower and finally wound on a collecting roller.

Then preparing electrostatic spinning solution. The PVA spinning solution is prepared by blending DMSO and PVA and heating the mixture in a water bath at 90-95 ℃ for 15min to prepare a PVA solution with the concentration of 14 wt%. The chitosan/carbon nano tube spinning solution is prepared from chitosan spinning solution and carbon nano tube spinning solution according to a ratio of 2:4, wherein the chitosan/carbon nano tube spinning solution is prepared by mixing 2wt% chitosan solution prepared by blending trifluoroacetic acid, dichloromethane and chitosan and carbon nano tubes prepared by blending 0.125g sodium dodecyl benzene sulfonate and 0.35g carbon nano tubes. The PVP solution was prepared by adding 10g PVP to 30g absolute ethanol, shaking for 15 minutes, and stirring with a magnetic stirrer for 2 hours.

Finally, the production is carried out by a texturing machine and an electrostatic spinning device. The double-spiral hollow polyester is provided with a texturing machine silk frame, silk is led to pass through a first hot box, a false twisting disc, a second hot box and other devices, the silk is wound on a collecting roller, texturing process parameters are set, the temperature of the first hot box is 180 ℃, the temperature of the second hot box is 160 ℃, the texturing machine speed is 700m/h, and the rotation speed of the false twisting disc is 200r/min. A PVA electrostatic spinning machine is arranged at the first group of false twisting discs, and a pair of electrostatic spinning machines are arranged at the second group of false twisting discs, and are respectively provided with chitosan/carbon nano tube spinning solution and PVP spinning solution. The inner diameter of the first spray head of the electrostatic spinning machine is 0.2mm, and the outer diameter is 0.3mm; the inner diameter of the second spray head is 0.6mm, and the outer diameter is 0.7mm; the third nozzle had an inner diameter of 0.8mm and an outer diameter of 0.9mm. The spinning voltage is 15kV, the spray head is arranged at a position 6cm away from the false twisting disc, and the propelling speed is 0.003mm/s.

Example 2

Example 2 the procedure was essentially the same as example 1. Except that three 6mm holes were drilled along one diagonal of the preform cross section with a drill press. The upper end of the prefabricated part is connected with a rotary rod through a copper wire, the rotary rod is arranged on the top of the wire drawing tower, the prefabricated part is just positioned in the wire drawing tower, the lower end of the prefabricated part is connected with a lower stretching guide rod through the copper wire, and the temperature of the wire drawing tower is set to be 220 ℃ at the top, 240 ℃ at the middle and 130 ℃ at the bottom. After 30min of pre-heat softening, the preform was pulled down and the rotating motor was turned on, the rotational speed was set at 5r/s.

Example 3

Example 3 the procedure was essentially the same as example 1. The difference is that the concentration of the prepared electrostatic spinning solution is different and the distance and the advancing speed of the false twisting disc are different. The PVA spinning solution is prepared by blending DMSO and PVA and heating the mixture in a water bath at 90-95 ℃ for 18min to prepare a PVA solution with the concentration of 18 wt%. The chitosan/carbon nano tube spinning solution is prepared from chitosan spinning solution and carbon nano tube spinning solution according to a ratio of 3:5, wherein the chitosan/carbon nano tube spinning solution is prepared by mixing 3wt% chitosan solution prepared by blending trifluoroacetic acid, dichloromethane and chitosan and carbon nano tubes prepared by blending 0.526g sodium dodecyl benzene sulfonate and 0.8g carbon nano tubes. The PVP solution was prepared by adding 15g PVP to 30g absolute ethanol, shaking for 15 minutes, and stirring with a magnetic stirrer for 2 hours. The spray head is arranged at a position 8cm away from the false twisting disc, and the advancing speed is 0.004mm/s.

Example 4

Example 4 the procedure was essentially the same as example 3. The difference is that the electrostatic spinning solution is selected differently. The adhesive layer spinning solution of the first spinning solution is cyanoacrylate solution, 1% of Dextran surfactant is added into an acidic medium, then butyl cyanoacrylate monomer is dripped into the mixed solution, and the reaction is carried out for 3 hours under the action of magnetic stirring. Then adjusting the mixture to be neutral by using 0.1mol/L NaOH to obtain cyanoacrylate solution; selecting a multi-walled carbon nanotube (MWCNTs) spinning solution as a conducting layer spinning solution of the second spinning solution, and blending the multi-walled carbon nanotubes (MWCNTs) in an N, N-dimethylacetamide (DMAc) solution to obtain an MWCNTs spinning solution; the moisture absorption layer spinning solution of the third spinning solution is hydroxypropyl cellulose (HPC) solution, naOH solvent with mass fraction of 8% is put into glycol/water cooling circulation liquid for cooling, HPC is slowly added into NaOH solvent when the temperature reaches 5 ℃, and dissolved for 0.5h at the stirring speed of 500rpm, and the completely dissolved solution is defoamed in a centrifuge at the speed of 3600rpm for 15min to obtain hydroxypropyl methyl cellulose solution with concentration of 3%.

Test case

(1) Examples 1-4 were subjected to antistatic testing: the prepared spiral hollow antistatic elastic fiber is woven into the same fabric, and the test is carried out in GB/T12703.2 section 2 of textile static test method, namely the charge surface density. And (3) throwing the sample rubbed by the friction device into a Faraday cylinder to measure the charge surface density of the sample. Charge areal density: the amount of charge per unit area of the sample is expressed in pC/m.

According to GB/T12703.1-2008 (1 st part of evaluation of static properties of textiles), static voltage half life is measured, the size of a sample is 30mm multiplied by 30mm, the distance between a needle electrode and the surface of the sample is 20mm, the distance between an induction electrode and the surface of the sample is 15mm, the test temperature is (20+/-2), the relative humidity is (35+/-5), and the rotating speed of a test bed is at least 1000r/min.

TABLE 1 antistatic Performance test results

	Example 1	Example 2	Example 3	Example 4
					Charge areal density (pC/m)	3.4	3.1	3.8	2.8
Half life of electrostatic voltage(s)	2.8	2.5	3.1	1.9

(2) Examples 1-4 were subjected to a warmth retention test: when heat is transferred on the material, the ratio of the temperature difference between the two sides of the material and the power of the heat source is the thermal resistance, the thermal resistance and the Crohn value both represent the obstruction of the heat passing through the material, and the heat transfer coefficient represents the heat transfer. The test is mainly to test the thermal resistance of materials, and the Crohn's value, the heat transfer coefficient and the heat preservation rate are obtained through formula conversion. The fabric prepared was tested for its Crohn's value, thermal resistance, heat transfer coefficient and heat retention using a YG606E textile thermal resistance tester, and a 35cm by 35cm sample was prepared. The temperature of air is 26 ℃ and the relative humidity is 65%, the sample is put into a textile thermal resistance tester, preheated for about 1h, the surface temperature Tm of the test board reaches 35 ℃, and then reaches a stable state after 30min, and the test is carried out. The thermal insulation performance test results of the fabric are shown in table 2:

table 2 results of thermal insulation test

Analysis of results: example 1 was superior to example 2 in warmth retention because one diagonal of the cross section of the preform in example 1 was drilled with two holes and the rotation speed of the rotary electric machine was also faster, so that the hollow of the prepared hollow spiral polyester fiber was larger and the fiber had a larger twist, and thus warmth retention was better. Example 3 is superior to example 1 in warmth because example 3 has a smaller receiving distance than example 1 because the jet is drawn and attenuated for a longer period of time during spinning as the receiving distance increases, the jet takes longer to deposit on the receiving means, and thus the fiber diameter decreases. The fiber diameter is a key factor influencing the thermal insulation performance of the material, the finer the fiber diameter is, the more the number of fibers in a unit space is, the smaller the diameter of formed holes is, the more static air can be contained, and the thermal insulation performance of the material is improved.

(3) Examples 1-5 were subjected to mechanical property testing: the specific experimental process is that a single fiber strength machine, an electronic single yarn strength machine or a yarn strength and elongation instrument is used for testing mechanical properties such as tensile fracture and the like of the prepared spiral hollow antistatic elastic fiber, at the moment, the pre-draft multiple of the prepared spiral hollow antistatic elastic fiber is set to be 3.6, the twist is 485T/m, the yarn linear density is 72dtex and is a fixed value, and the breaking strength and the breaking elongation of the hollow antistatic elastic fiber are measured as follows. ,

TABLE 3 mechanical test results

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present invention will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present invention.

Claims

1. The preparation method of the triaxial electrostatic spinning spiral hollow antistatic elastic fiber is characterized by comprising the following steps of:

s1, conveying a spiral hollow substrate into a texturing machine;

s2, performing triaxial electrostatic spinning when the spiral hollow base material reaches the false twisting disc, wherein the spiral hollow base material sequentially passes through a first false twisting disc and a second false twisting disc during spinning, a first nozzle for electrostatic spinning is arranged at the first false twisting disc, and a second nozzle and a third nozzle are respectively arranged at two sides of the second false twisting disc; wherein,,

2. The method of manufacturing according to claim 1, characterized in that: the spiral hollow substrate has at least two holes extending axially therethrough.

3. The method of manufacturing according to claim 1, characterized in that: the spiral hollow base material is made of terylene.

4. The method of manufacturing according to claim 1, characterized in that: the preparation method of the spiral hollow base material comprises the steps of punching along the axial direction of the base material and rotating the two ends in opposite directions in the hot stretching process.

5. The method of manufacturing according to claim 1, characterized in that: the adhesive layer spinning solution is selected from polyvinyl alcohol spinning solution or cyanoacrylate spinning solution.

6. The method of manufacturing according to claim 1, characterized in that: the conducting layer spinning solution is selected from chitosan/carbon nano tube mixed spinning solution or multi-wall carbon nano tube spinning solution.

7. The method of manufacturing according to claim 1, characterized in that: the spinning solution of the moisture absorption layer is selected from polyvinylpyrrolidone spinning solution or hydroxypropyl cellulose spinning solution.

8. The method of manufacturing according to claim 1, characterized in that: the second nozzle and the third nozzle are symmetrically arranged on two sides of the second false twisting disc.

9. The method of manufacturing according to claim 1, characterized in that: the rotating speeds of the first false twist disc and the second false twist disc are 180-190r/min.

10. A triaxial electrospun spiral hollow antistatic elastic fiber obtained by the preparation method according to any one of claims 1 to 9.