A method for preparing a hollow fiber based on ultraviolet coupling wet spinning

Abstract

The application discloses a hollow fiber preparation method based on ultraviolet coupling wet spinning, and relates to the technical field of fiber preparation.The spinning dope is injected into a coagulation bath, and a polymeric gel yarn is formed through in-situ polymerization under ultraviolet irradiation; after water bath, drawing and setting, the hollow fiber is obtained through pre-carbonization and carbonization treatment.The application realizes continuous forming of the hollow fiber through coupling of ultraviolet-initiated polymerization and wet spinning, effectively simplifies the process flow, and reduces energy consumption.The prepared hollow fiber has an axially continuous and through cavity structure, has excellent structural uniformity and performance stability, and can be widely applied to the fields of membrane separation, energy storage and environmental governance.

Description

Technical Field

[0001] This invention relates to the field of fiber preparation technology, and in particular to a method for preparing hollow fibers based on ultraviolet-coupled wet spinning. Background Technology

[0002] Hollow fibers are a type of tubular functional fiber with a continuous axial cavity. Due to their high porosity, large specific surface area, low density, and excellent mass transfer and separation performance, they are widely used in membrane separation, energy storage, biomedicine, catalyst supports, and environmental remediation. Their internal cavity can significantly reduce material density and improve mass transfer efficiency, while the synergistic effect of their inner and outer surfaces can greatly improve the utilization rate of active sites and the overall performance of the material, making them an important development direction for high-performance functional fibers.

[0003] Currently, while traditional hollow fibers have achieved large-scale application, significant shortcomings remain in terms of material performance and manufacturing processes. From a material system perspective, polymer-based hollow fibers suffer from poor heat resistance, low mechanical strength, and insufficient environmental stability, making them unsuitable for harsh conditions such as high temperatures, strong corrosion, and high loads. While ceramic-based hollow fibers exhibit excellent temperature and corrosion resistance, their manufacturing process is complex, raw material costs are high, and the materials are brittle and easily damaged, limiting their engineering applications. From a manufacturing process perspective, current mainstream methods include solution spinning, melt spinning, thermally induced phase separation, electrospinning, phase separation, and high-temperature sintering, all of which generally suffer from cumbersome steps, long cycles, high energy consumption, and difficulties in continuous production. Furthermore, traditional processes lack sufficient control over the hollow structure, making it difficult to precisely control wall thickness uniformity, cavity morphology, and pore size distribution. This results in fibers prone to eccentric cavities, uneven wall thickness, and structural defects, leading to large fluctuations in product performance and failing to meet the stringent requirements of high-end applications for structural uniformity, performance stability, and reliability. In addition, some processes also have problems such as low raw material utilization and large pollutant emissions, which further restrict the green and large-scale production and industrialization of hollow fiber materials.

[0004] Existing technologies struggle to simultaneously meet the demands for high performance, low cost, continuous production, and precise control, becoming a key bottleneck restricting the high-end and industrial development of hollow fiber materials. Therefore, developing a simple, efficient, controllable, continuous, and precisely structure-controlled hollow fiber preparation technology to overcome existing limitations is urgently necessary and of significant practical value for promoting the widespread application and industrial upgrading of hollow fibers in high-end fields. Summary of the Invention

[0005] The purpose of this invention is to provide a method for preparing hollow fibers based on ultraviolet-coupled wet spinning, so as to solve the problems existing in the prior art.

[0006] To achieve the above objectives, the present invention provides the following solution: This invention provides a method for preparing hollow fibers based on ultraviolet-coupled wet spinning, comprising the following steps: (1) Preparation of spinning solution: Acrylamide, sodium alginate, glucose, initiator and crosslinking agent are mixed in water to obtain spinning solution; (2) Preparation of spinning coagulation bath: Acrylamide, glucose and calcium chloride are mixed in water to obtain a spinning coagulation bath; (3) Ultraviolet light polymerization: The spinning solution is injected into the spinning coagulation bath through a spinning device, and in-situ photopolymerization is carried out under ultraviolet light irradiation to form polymerized gel filaments; (4) Water bath treatment: The polymerized gel filaments are subjected to water bath treatment to obtain water bath gel filaments; (5) Stretching and shaping: The water bath gel filaments obtained in step (4) are stretched and shaped to obtain shaped gel filaments; (6) Pre-carbonization and carbonization treatment: The shaped gel filaments are subjected to pre-carbonization and carbonization treatment in sequence to obtain hollow fibers.

[0007] Furthermore, the initiator is ammonium persulfate, and the crosslinking agent is N,N'-methylenebisacrylamide.

[0008] Further, in step (1), the mass ratio of glucose to acrylamide is 10:1 to 10:8; the mass ratio of acrylamide to initiator is 40:1 to 40:5; the mass ratio of acrylamide to crosslinking agent is 40:1 to 40:5; and the amount of sodium alginate added is 0.1% to 5% of the mass of the spinning solution.

[0009] Further, in step (2), the mass ratio of glucose to acrylamide is 10:1 to 10:6; the amount of calcium chloride added is 5-10% of the mass of the spinning coagulation bath.

[0010] Furthermore, in the spinning solution, the mass ratio of water, glucose, and acrylamide is 100:10:(1~6); in the spinning coagulation bath, the mass ratio of water, glucose, and acrylamide is 100:10:(1~6).

[0011] Furthermore, in step (3), the power of the ultraviolet irradiation is 10-100W, the irradiation time is 1-600 s, and the spinning speed is 800-1500μL / min.

[0012] Furthermore, the water bath treatment is carried out at a temperature of 20-40°C for a duration of 20-60 seconds.

[0013] Furthermore, in step (5), the stretching ratio of the stretching molding is 0-200%, and is not 0%.

[0014] Furthermore, the pre-carbonization temperature is 200-300℃ and the time is 0.1-3h; the carbonization temperature is 900℃ and the time is 0.1-3h.

[0015] The present invention also provides hollow fibers prepared by the above-described method for preparing hollow fibers based on ultraviolet coupling wet spinning.

[0016] To address the problems of complex processes, cumbersome steps, difficulty in simplified continuous production, and insufficient precision in structural control (fiber wall thickness, diameter) in existing hollow fiber preparation technologies, this invention provides a hollow fiber preparation technology based on ultraviolet-coupled wet spinning. This technology organically combines ultraviolet irradiation with wet spinning, and achieves simplified continuous preparation of hollow fibers by designing a spontaneous formation mechanism for the hollow structure. This invention can effectively simplify the preparation process, reduce energy consumption and production costs, and simultaneously achieve precise control over the wall thickness and morphology of hollow fibers, producing structurally stable and high-performance hollow fibers, which is conducive to promoting the large-scale and industrialized development of hollow fiber materials in various application fields.

[0017] During the water bath treatment stage, high concentrations of components such as glucose and acrylamide inside the fiber diffuse into the water bath solution, causing a radial gradient difference in the concentration of precursors inside the fiber. This results in a component distribution where the outer wall components exhibit strong synergy, while the internal synergy is weaker. During carbonization, the varying degrees of this radial synergy promote the in-situ formation of a stable, interconnected hollow structure in the material.

[0018] This invention utilizes UV-coupled wet spinning to prepare hollow fibers. It integrates spinning, iontophoresis, and UV-initiated in-situ polymerization on a single continuous spinning production line, eliminating the need for separate post-processing steps such as re-dissolving intermediate products or secondary molding. This achieves continuous, efficient, and one-step production of hollow fibers from spinning solution to gel fibers. Specifically, by coupling UV irradiation with the wet spinning process, the spinning solution undergoes ion cross-linking and molding simultaneously with extrusion into the coagulation bath. Immediately following, online UV photopolymerization, combined with subsequent water bath and drawing treatments, allows for the direct acquisition of structurally stable hollow gel fibers in a single continuous process. Heat treatment then yields the target hollow fibers. Compared to traditional multi-step methods, this invention eliminates the need for step-by-step precursor preparation, step-by-step cross-linking, or multiple molding processes, significantly simplifying the preparation process, shortening the production cycle, and reducing energy consumption. It truly achieves integrated, continuous, and controllable preparation of hollow fibers.

[0019] The present invention discloses the following technical effects: This invention provides a method for preparing hollow fibers based on ultraviolet-coupled wet spinning, which effectively solves the problems of complex processes, cumbersome steps, and difficulty in simple and continuous preparation of existing hollow fibers. By organically coupling ultraviolet irradiation with wet spinning process, the integrated, continuous and controllable preparation of hollow fibers is realized.

[0020] This invention integrates spinning, ionogel curing, and UV-initiated in-situ polymerization in a synergistic process, eliminating the need for separate post-processing of intermediate products. This significantly simplifies the preparation process and reduces energy consumption and production costs. Furthermore, by rationally designing process parameters and component ratios, the wall thickness and morphology of hollow fibers can be precisely controlled, resulting in structurally stable and high-performance hollow fibers. In addition, the process of this invention is simple to operate, highly repeatable, and can achieve large-scale continuous production, effectively promoting the application of hollow fiber materials in various fields, and possessing significant practical value and industrialization prospects. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a cross-sectional scanning electron microscope (SEM) image of the polymeric gel filaments prepared in Example 1.

[0023] Figure 2 The images show axial (a) and radial (b) scanning electron microscope (SEM) images of the pre-carbonized gel filaments (40% draw ratio) in Example 1.

[0024] Figure 3 The images shown are cross-sectional scanning electron microscope (SEM) images of the hollow fibers prepared in Example 1, where (a) shows a draw ratio of 0% and (b) shows a draw ratio of 20%. Detailed Implementation

[0025] Various exemplary embodiments of the present invention will now be described in detail. This detailed description should not be considered as a limitation of the present invention, but rather as a more detailed description of certain aspects, features, and embodiments of the present invention.

[0026] It should be understood that the terminology used in this invention is merely for describing particular embodiments and is not intended to limit the invention. Furthermore, with respect to numerical ranges in this invention, it should be understood that each intermediate value between the upper and lower limits of the range is also specifically disclosed. Any stated value or intermediate value within a stated range, as well as each smaller range between any other stated value or intermediate value within said range, is also included in this invention. The upper and lower limits of these smaller ranges may be independently included or excluded from the range.

[0027] Unless otherwise stated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. While only preferred methods and materials have been described herein, any methods and materials similar or equivalent to those described herein may be used in the implementation or testing of this invention. All references to this specification are incorporated by way of citation to disclose and describe methods and / or materials associated with those references. In the event of any conflict with any incorporated reference, the content of this specification shall prevail.

[0028] Various modifications and variations can be made to the specific embodiments described in this specification without departing from the scope or spirit of the invention, as will be apparent to those skilled in the art. Other embodiments derived from this specification will also be readily apparent to those skilled in the art. This specification and embodiments are merely exemplary.

[0029] The terms “include,” “including,” “have,” “contain,” etc., used in this article are all open-ended terms, meaning that they include but are not limited to.

[0030] It should be noted that any aspects not described in detail in this invention are conventional practices in the field and are not the focus of this invention.

[0031] This invention achieves continuous and simplified preparation of hollow fibers through the coordinated design of the component system and spinning process. It innovatively uses small-molecule sugars and polymerizable acrylamide monomers as core raw materials, employing UV-initiated polymerization to construct a dual-gel network (a calcium alginate network forms within the fiber during coagulation due to calcium ion exchange, while a polyacrylamide network forms due to UV polymerization). Subsequent processes create a spontaneous component gradient within the fiber, enabling the material to spontaneously generate a hollow structure in situ during pre-carbonization and carbonization. This hollow structure can be flexibly controlled by adjusting process parameters, thus producing hollow fibers with different wall thicknesses, truly achieving simple and efficient preparation of hollow fibers. Furthermore, this invention, coupled with a drawing process, can produce hollow fibers of different diameters, broadening the product's applicability.

[0032] In terms of composition design, this invention employs a complex system of polymerizable acrylamide monomers, small-molecule sugars, sodium alginate, and initiators. It fully utilizes the inherent properties of the materials, combining spinning and curing processes to construct spontaneous compositional differences within the gel precursor fibers. After pre-carbonization and carbonization, a stable hollow structure is formed. In terms of process route, based on wet spinning, it couples key unit operations such as UV polymerization and drawing to construct an integrated and continuous preparation process with the potential for large-scale production. Simultaneously, in terms of structural control, it utilizes the diffusion characteristics of small molecules within the gel fibers, precisely controlling the water bath time to create varying degrees of compositional differences, achieving flexible control over the hollow fiber wall thickness and producing hollow fibers with diverse structures. During the diffusion process, the longer the water bath time, the more complete the precursor diffusion and the greater the loss; the shorter the water bath time, the less precursor diffusion and loss.

[0033] This invention innovatively introduces ultraviolet polymerization, water bath, and drawing processes into a composite system of sodium alginate, small molecule sugars, and acrylamide. This allows for the spontaneous construction of small molecule concentration gradients and compositional differences within gel fibers, and the generation of gel fibers of varying diameters through drawing. Pre-carbonization yields dense precursor fibers, and subsequent carbonization enables in-situ spontaneous generation of hollow structures based on internal compositional differences. This technical approach simplifies the complex processes of traditional hollow fiber forming, improves the precision of structural control and production stability, and provides a novel technological path for the efficient preparation and industrial application of high-performance hollow fibers.

[0034] The water bath process of this invention creates radial component concentration differences within the fiber, providing a component basis for the formation of a hollow structure. In the pre-carbonization stage, a small amount of organic-inorganic transformation and water removal mainly occur, and the fiber solidifies into a solid form. At this temperature, the precursor only undergoes a small amount of decomposition and does not form a hollow structure, thus maintaining the overall morphology of the fiber stably. In the high-temperature carbonization stage, only regions with good glucose-acrylamide coupling can form a dense structure. The components of the fiber outer wall remain intact, and the coupling effect is excellent, ultimately forming a dense layer. However, in the middle of the fiber, the precursor is lost due to the water bath, and the coupling effect is weak, so a dense structure cannot be formed, thus forming a cavity in situ.

[0035] This invention provides a method for preparing hollow fibers based on ultraviolet-coupled wet spinning, preferably comprising the following steps: (1) Preparation of spinning solution: Acrylamide, sodium alginate, glucose, initiator and crosslinking agent are mixed in water to obtain spinning solution; (2) Preparation of spinning coagulation bath: Acrylamide, glucose and calcium chloride are mixed in water to obtain a spinning coagulation bath; (3) Ultraviolet light polymerization: The spinning solution is injected into the spinning coagulation bath through a spinning device, and in-situ photopolymerization is carried out under ultraviolet light irradiation to form polymerized gel filaments; (4) Water bath treatment: The polymerized gel filaments are subjected to water bath treatment to obtain water bath gel filaments; (5) Stretching and shaping: The water bath gel filaments obtained in step (4) are stretched and shaped to obtain shaped gel filaments; (6) Pre-carbonization and carbonization treatment: The shaped gel filaments are subjected to pre-carbonization and carbonization treatment in sequence to obtain hollow fibers.

[0036] Preferably, the initiator is ammonium persulfate and the crosslinking agent is N,N'-methylenebisacrylamide.

[0037] Preferably, in step (1), the mass ratio of glucose to acrylamide is 10:1 to 10:6; the mass ratio of acrylamide to initiator is 40:1 to 40:5; the mass ratio of acrylamide to crosslinking agent is 40:1 to 40:5; and the amount of sodium alginate added is 0.1% to 5% of the mass of the spinning solution.

[0038] Preferably, in step (2), the mass ratio of glucose to acrylamide is 10:1 to 10:6; and the amount of calcium chloride added is 5% of the mass of the spinning coagulation bath.

[0039] Preferably, the mass ratio of water, glucose and acrylamide in the spinning solution is 100:10 (1~6); the mass ratio of water, glucose and acrylamide in the spinning coagulation bath is 100:10 (1~6).

[0040] Preferably, in step (3), the power of the ultraviolet irradiation is 10-100W, the irradiation time is 1-600 s, and the spinning speed is 1000μL / min.

[0041] Preferably, the water bath treatment is performed at a temperature of 20-40°C for 20-60 seconds.

[0042] Preferably, in step (5), the stretching ratio of the stretching molding is 0-200%, and not 0%.

[0043] Preferably, the pre-carbonization temperature is 200-300℃ and the time is 2 hours; the carbonization temperature is above 900℃ and the time is 2 hours.

[0044] The present invention will be further described in detail below with reference to specific embodiments: Example 1 This embodiment provides a method for preparing hollow fibers based on ultraviolet-coupled wet spinning. The preparation steps are as follows: (1) Preparation of spinning solution: Add 10 parts glucose, 4 parts acrylamide, 0.1 parts ammonium persulfate (initiator), and 0.1 parts N,N'-methylenebisacrylamide (crosslinking agent) to 100 parts deionized water. The amount of sodium alginate added is 0.5% of the total mass of the spinning solution. Stir thoroughly for 30 minutes and ultrasonically disperse evenly to obtain a stable and uniform spinning solution.

[0045] (2) Preparation of spinning coagulation bath: Using 100 parts deionized water as a solvent, add 10 parts glucose and 4 parts acrylamide, and add anhydrous calcium chloride at 5% of the total mass of the spinning coagulation bath. Stir thoroughly and ultrasonically disperse evenly to obtain a stable and uniform spinning coagulation bath.

[0046] (3) Ultraviolet light polymerization The spinning solution was injected into a syringe and then spun into a spinning coagulation bath to form gel fibers. The spinning speed was controlled at 1000 μL / min. The fibers were irradiated with 20 W ultraviolet light (385nm) for 30 s to complete in-situ photopolymerization and obtain polymerized gel fibers.

[0047] (4) Water bath treatment: The polymerized gel filaments are subjected to water bath treatment (25℃) for 30 s to obtain water bath gel filaments.

[0048] (5) Stretching and shaping: The water bath gel filaments are stretched and the stretching rate is controlled between 0-200% (specifically 20%, 40%, 60%, 80% and 100%) to obtain shaped gel filaments.

[0049] (6) Pre-carbonization and carbonization treatment: The obtained shaped gel filaments were pre-carbonized at 230℃ for 2 h, and then carbonized at 1100℃ for 2 h to obtain hollow fibers.

[0050] The cross-sectional scanning electron microscope (SEM) image of the polymeric gel filaments prepared in Example 1 is shown below. Figure 1 As shown.

[0051] The axial (a) and radial (b) scanning electron microscope (SEM) images of the pre-carbonized gel filaments (40% draw ratio) in Example 1 are shown below. Figure 2 As shown; the cross-sectional scanning electron microscope (SEM) image of the prepared hollow fiber is shown below. Figure 3 As shown, (a) represents a draw ratio of 0%, and (b) represents a draw ratio of 20%.

[0052] Example 2 This embodiment provides a method for preparing hollow fibers based on ultraviolet-coupled wet spinning. The preparation steps are as follows: (1) Preparation of spinning solution: Add 10 parts glucose, 3 parts acrylamide, 0.075 parts ammonium persulfate (initiator), and 0.075 parts N,N'-methylenebisacrylamide (crosslinking agent) to 100 parts deionized water. The amount of sodium alginate added is 0.5% of the total mass of the spinning solution. Stir thoroughly for 30 minutes and ultrasonically disperse evenly to obtain a stable and uniform spinning solution.

[0053] (2) Preparation of spinning coagulation bath: Using 100 parts deionized water as a solvent, add 10 parts glucose and 3 parts acrylamide, and add anhydrous calcium chloride at 5% of the total mass of the spinning coagulation bath. Stir thoroughly and ultrasonically disperse evenly to obtain a stable and uniform spinning coagulation bath.

[0054] (3) Ultraviolet light polymerization: The spinning solution was injected into a syringe and then spun into a spinning coagulation bath to form gel fibers. The spinning speed was controlled at 1500 μL / min. The fibers were irradiated with 30 W ultraviolet light (385nm) for 30 s to complete in-situ photopolymerization and obtain polymerized gel fibers.

[0055] (4) Water bath treatment: The polymerized gel filaments are subjected to water bath treatment (25℃) for 20 s to obtain water bath gel filaments.

[0056] (5) Stretching and shaping: The water bath gel filaments are stretched, and the stretching rate is controlled between 0-200%, specifically 20%, 40%, 60%, 80% and 100%, to obtain the shaped gel filaments.

[0057] (6) Pre-carbonization and carbonization treatment: The shaped gel fiber is pre-carbonized at 220℃ for 2 h, and then carbonized at 1200℃ for 2 h to obtain hollow fiber.

[0058] Example 3 This embodiment provides a method for preparing hollow fibers based on ultraviolet-coupled wet spinning. The preparation steps are as follows: (1) Preparation of spinning solution: Add 10 parts glucose, 8 parts acrylamide, 0.2 parts ammonium persulfate (initiator), and 0.2 parts N,N'-methylenebisacrylamide (crosslinking agent) to 100 parts deionized water. The amount of sodium alginate added is 0.5% of the total mass of the spinning solution. Stir thoroughly for 30 minutes and ultrasonically disperse evenly to obtain a stable and uniform spinning solution.

[0059] (2) Preparation of spinning coagulation bath: Using 100 parts deionized water as a solvent, add 10 parts glucose and 8 parts acrylamide, and add anhydrous calcium chloride at 5% of the total mass of the spinning coagulation bath. Stir thoroughly and ultrasonically disperse evenly to obtain a stable and uniform spinning coagulation bath.

[0060] (3) Ultraviolet light polymerization: The spinning solution was injected into a syringe and then spun into a spinning coagulation bath to form gel fibers. The spinning speed was controlled at 1000 μL / min. The fibers were irradiated with 20 W ultraviolet light (385nm) for 60 s to complete in-situ photopolymerization and obtain polymerized gel fibers.

[0061] (4) Water bath treatment: The polymerized gel filaments are subjected to water bath treatment (25℃) for 40 s to obtain water bath gel filaments.

[0062] (5) Stretching and shaping: The water bath gel filaments are stretched and the stretching rate is controlled between 0-200% (specifically 20%, 40%, 60%, 80% and 100%) to obtain shaped gel filaments.

[0063] (6) Pre-carbonization and carbonization treatment: The shaped gel fiber is pre-carbonized at 250℃ for 2 h, and then carbonized at 1400℃ for 2 h to obtain hollow fiber.

[0064] Table 1 Comparison of data for different hollow fibers in Example 1 The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A method for preparing hollow fibers based on ultraviolet-coupled wet spinning, characterized in that, Includes the following steps: (1) Preparation of spinning solution: Acrylamide, sodium alginate, glucose, initiator and crosslinking agent are mixed in water to obtain spinning solution; (2) Preparation of spinning coagulation bath: Acrylamide, glucose and calcium chloride are mixed in water to obtain a spinning coagulation bath; (3) Ultraviolet light polymerization: The spinning solution is injected into the spinning coagulation bath through a spinning device, and in-situ photopolymerization is carried out under ultraviolet light irradiation to form polymerized gel filaments; (4) Water bath treatment: The polymerized gel filaments are subjected to water bath treatment to obtain water bath gel filaments; (5) Stretching and shaping: The water bath gel filaments obtained in step (4) are stretched and shaped to obtain shaped gel filaments; (6) Pre-carbonization and carbonization treatment: The shaped gel filaments are subjected to pre-carbonization and carbonization treatment in sequence to obtain hollow fibers.

2. The method for preparing hollow fibers based on ultraviolet-coupled wet spinning according to claim 1, characterized in that, The initiator is ammonium persulfate, and the crosslinking agent is N,N'-methylenebisacrylamide.

3. The method for preparing hollow fibers based on ultraviolet-coupled wet spinning according to claim 1, characterized in that, In step (1), the mass ratio of glucose to acrylamide is 10:1 to 10:8; the mass ratio of acrylamide to initiator is 40:1 to 40:5; the mass ratio of acrylamide to crosslinking agent is 40:1 to 40:5; and the amount of sodium alginate added is 0.1% to 5% of the mass of the spinning solution.

4. The method for preparing hollow fibers based on ultraviolet-coupled wet spinning according to claim 1, characterized in that, In step (2), the mass ratio of glucose to acrylamide is 10:1 to 10:6; the amount of calcium chloride added is 5-10% of the mass of the spinning coagulation bath.

5. The method for preparing hollow fibers based on ultraviolet-coupled wet spinning according to claim 1, characterized in that, In the spinning solution, the mass ratio of water, glucose, and acrylamide is 100:10:(1~6); in the spinning coagulation bath, the mass ratio of water, glucose, and acrylamide is 100:10:(1~6).

6. The method for preparing hollow fibers based on ultraviolet-coupled wet spinning according to claim 1, characterized in that, In step (3), the power of the ultraviolet irradiation is 10-100W, the irradiation time is 1-600 s, and the spinning speed is 800-1500μL / min.

7. The method for preparing hollow fibers based on ultraviolet-coupled wet spinning according to claim 1, characterized in that, The water bath treatment is performed at a temperature of 20-40℃ for a duration of 20-60 seconds.

8. The method for preparing hollow fibers based on ultraviolet-coupled wet spinning according to claim 1, characterized in that, In step (5), the stretching ratio of the stretching molding is 0-200%, and is not 0%.

9. The method for preparing hollow fibers based on ultraviolet-coupled wet spinning according to claim 1, characterized in that, The pre-carbonization temperature is 200-300℃ and the time is 0.1-3h; the carbonization temperature is 900-2000℃ and the time is 0.1-3h.

10. A hollow fiber prepared by the hollow fiber preparation method based on ultraviolet coupling wet spinning as described in any one of claims 1-9.

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