156 results about "Single fiber" patented technology

The invention discloses a method for printing a two-dimensional structure of a thermosetting material with controllable surface roughness. The method comprises the following steps: regulating and controlling the rheological property of the extrusion behavior of the selected thermosetting material; calculating and determining the relationship between the deposition morphology of the thermosetting material and the printing parameters, and drawing an H-V phase diagram to determine a critical printing interval for realizing uniform deposition; establishing a single fiber deposition morphology evolution model and a multi-fiber fusion geometric evolution model, and providing a correlation corresponding relation for the fusion degree and the surface microscopic roughness of adjacent deposition fibers, so as to obtain a preset surface microstructure morphology; and according to the required surface roughness, the interface is cured and locked through thermocuring at different fusion stages, so that the thermoset material two-dimensional film with continuously adjustable roughness and a stable structure is obtained. According to the invention, two-dimensional structure printing of any thermosetting material system on any spreading substrate can be realized, and the surface roughness can be continuously and programmably adjusted.

The invention belongs to the field of fiber materials, and provides a hollow acrylic fabric with thermal insulation performance and a preparation process thereof. The composite design of an acrylonitrile-based copolymer shell layer and an inner cavity silicon dioxide aerogel layer is adopted, a boric acid ester cross-linked network is formed through borax bath treatment to lock a three-dimensional crimp structure, and a hydrophobic modified silicon dioxide aerogel layer with the thickness of 50-200 nm is constructed in a fiber inner cavity; the mechanical-structural synergy that the single-fiber breaking strength is not lower than 3.5 cN / dtex under the condition that the hollowness degree is 30%-45% and the fiber dry-state crimp number is not smaller than 12 / 25 mm is achieved, the thermal resistance of the fabric reaches 0.065 m.K / W to 0.075 m.K / W, the air permeability is kept at 150 mm / s to 250 mm / s, and the fabric has the advantages of being good in air permeability, good in air permeability and the like. The contradiction between mechanical bearing and hollow structure design under the high-solid-content wet spinning fine denier condition, the contradiction between structural stability and fatigue durability of boric acid ester cross-linked three-dimensional curl after multiple times of water washing and the contradiction between low gram weight and high thermal resistance and the heat transfer mechanism of breathable comfort are solved, and the wide warm-keeping garment application value is achieved.

To provide a lightweight, three-dimensional warp-knitted fabric that offers cushioning and flexibility when folded, similar to soft polyurethane foam. [Solution] The three-dimensional warp knitted fabric according to this embodiment is a three-dimensional warp knitted fabric knitted with a three-reed. The three-dimensional warp knitted fabric consists of a face fabric structure, a backing fabric structure, and a connecting structure that connects the face fabric structure and the backing fabric structure. The connecting yarn constituting the connecting structure is a multifilament crimped yarn with a total fineness of 80 to 170 dtex and a single fiber fineness of 2 to 5 dtex. The connecting structure is a diagonal connecting structure or a truss connecting structure. The weight of the three-dimensional warp knitted fabric is 550 g / m 2 The following applies:

The invention discloses functional composite fiber supplement granules for sows in the perinatal period as well as a preparation method and application thereof, relates to the technical field of feeds, and solves the problems that a single fiber raw material is poor in effect and palatability and cannot accurately regulate and control intestinal health of the sows in the perinatal period. Comprising the following raw materials in percentage by weight: 30-60% of soluble fiber; 25%-45% of insoluble fibers; 5%-15% of an adhesive and energy agent; 9.2%-23% of a functional additive and 0.5%-1.5% of a lubricant And unavoidable impurities. By scientifically compounding a plurality of specific fiber sources and functional additives, the feed can achieve the following effects: (1) the constipation condition of the sows in the perinatal period can be obviously improved; (2) regulating the balance of intestinal flora, inhibiting inflammation and enhancing the oxidation resistance of the body; (3) the feed intake of the sows in the perinatal period is increased, and postpartum recovery and lactation performance are promoted.

A colored optical fiber comprises a bare optical fiber, a primary layer formed of a first ultraviolet curing resin covering the bare optical fiber, and a secondary layer formed of a second ultraviolet curing resin covering the primary layer, wherein a Young's modulus of the primary layer is smaller than 70% with respect to a saturated Young's modulus of the primary layer, and wherein the saturated Young's modulus of the primary layer is smaller than or equal to 0.85 MPa.

The application belongs to the field of smart fibers and flexible electronics, and relates to an integrated circuit fiber and a preparation method thereof. The fiber contains electronic components integrated in a single fiber, and the electronic components are composed of multiple functional layers serving as components of the fiber and extending along the axial direction of the fiber. The integrated circuit fiber includes two types of integration schemes: one is a two-dimensional grid structure of multiple electronic components arranged radially side by side, and the electronic components can be electrically interconnected or isolated; the other is a radial stacking structure of a single electronic component, which can be adapted to five types of functional units, including electroluminescence, resistance-capacitance processing, capacitance sensing, transistors and organic electrochemical diodes. The preparation method comprises the following steps: a multi-channel microfluidic chip is used, multiple spinning solutions are injected into different channels, the spinning solutions in some channels are periodically turned on and off, the flow rates of the channels are independently controlled, the solutions are combined to form a multi-layer laminar flow structure, and the product is obtained through solidification in a coagulation bath, cleaning and drying. The application realizes high-density and high-stability functional integration in a single fiber.

Provided is an artificial leather that achieves both a soft texture and excellent durability, and a method for manufacturing the same, the leather comprising: a fibrous base material formed from superfine fibers having an average single fiber diameter of 0.1-10 μm; and a polymeric elastic body, where the polymer elastic body comprises a compound having a hydrophilic group and a compound having an ethylene oxide skeleton, the content of the compound in the polymeric elastic body of the artificial leather being 0.1-5 parts by mass per 100 parts by mass of the polymeric elastic body.

A cigarette filter that reduces harmful smoke components is disclosed. In one view, the present invention provides a cigarette filter comprising a paper sheet, wherein the paper sheet comprises pulp fibers and chitosan fibers, and the pulp fibers comprise at least one of single fibers and mixed fibers having an average coarseness of 13 mg / 100 m or more.

The invention relates to the technical field of building materials, and discloses a reinforced polypropylene spiral fiber which is of a continuous spiral structure and is made of a modified polypropylene material. The diameter of the fiber ranges from 0.2 mm to 0.4 mm, the length of the fiber ranges from 15 mm to 40 mm, the spiral pitch of the fiber ranges from 3 mm to 8 mm, and the number of spiral turns of a single fiber ranges from 2 to 5. According to the reinforced polypropylene spiral fiber and the preparation method and application thereof, the spiral structure greatly increases the contact area and bond stress of the fiber and concrete, the dispersity of the fiber in the concrete is remarkably improved, the reduction rate of the anti-cracking area of the concrete is larger than or equal to 60%, the 28-day breaking strength is larger than or equal to 8.0 MPa, shrinkage cracks and temperature cracks of the concrete in a water environment are effectively inhibited, and the service life of the concrete is prolonged. And the structural toughness and the bearing capacity are greatly improved.

A multi-core fiber coupler based on single-clad optical fibers (1), and a taper ratio design method therefor. Each single-clad optical fiber (1) comprises a fiber core (13), a cladding (12), and a coating layer (11), arranged in sequence from inside to outside. The multi-core fiber coupler based on single-clad optical fibers (1) comprises single-clad optical fibers (1) and a sleeve (2). Several single-clad optical fibers (1) are nested within the sleeve (2), and the total number of the single-clad optical fibers (1) is equal to the total number of fiber cores in a target multi-core optical fiber (3). One end of the sleeve (2) is tapered, and the other end is not tapered. A mode field diameter of each single-clad optical fiber (1) at the non-tapered end of the sleeve (2) matches a mode field diameter of a single fiber core of the target multi-core optical fiber (3). The single-clad optical fibers (1) and the multi-core fiber coupler have the advantages of low fabrication difficulty, low cost, and the capability of achieving low-loss connection with multi-core optical fibers and standard single-mode optical fibers.

The invention relates to a preparation method and application of a cobalt / nitrogen co-doped multi-section nano-chain carbon fiber oxygen electrode, and the preparation method comprises the following steps: (1) dissolving an organic ligand and a cobalt salt in an organic solvent, uniformly stirring and standing, and then centrifuging, washing and drying to obtain ZIF-67 powder; (2) dissolving a high-molecular polymer and ZIF-67 powder in a solvent, and uniformly stirring to obtain an electrostatic spinning solution; (3) performing electrostatic spinning on the electrostatic spinning solution to obtain a fiber membrane; and (4) pre-oxidizing the fiber membrane at a medium-low temperature in an air atmosphere, and then transferring the fiber membrane to a nitrogen atmosphere for high-temperature calcination to obtain the cobalt / nitrogen co-doped multi-section nano-chain carbon fiber oxygen electrode. According to the invention, the distance of the ZIF-67 cluster on the single fiber is accurately controlled, the electron transmission path and the active site distribution are optimized, the breakthrough of the bifunctional catalytic performance is realized, and the application prospect is good.

The application provides an emulsified fiber asphalt anti-sloughing plugging agent and a preparation method. The emulsified fiber asphalt anti-sloughing plugging agent is prepared by mixing emulsified asphalt, MMH positive glue and basalt fiber powder. The basalt fiber powder is distributed in a three-dimensional random pattern in the emulsified asphalt anti-sloughing plugging agent, which can enhance the strength of the asphalt plugging layer. The single fiber diameter of the basalt fiber powder is consistent with the average crack distribution of most shale formations, and the basalt fiber powder has good compatibility, which enhances the adhesion between the plugging layer and the formation after the emulsified asphalt is demulsified, and improves the anti-sloughing plugging effect. The MMH positive glue improves the stability of the whole system due to its own characteristics, and is beneficial to the adsorption, demulsification and patching of the emulsified asphalt and the formation with negative charge. The emulsified fiber asphalt anti-sloughing plugging agent enhances the strength of the plugging layer after the emulsified asphalt is demulsified, and improves the adhesion between the plugging layer and the formation, and improves the anti-sloughing plugging effect. In addition, the preparation process is simple, the cost is low, and the emulsified fiber asphalt anti-sloughing plugging agent has a high application prospect in the field of wellbore anti-sloughing plugging.

This invention relates to a silicon carbide ceramic matrix composite material reinforced with unidirectional silicon carbide fibers and its preparation method, comprising: 1) winding silicon carbide fibers in the same direction to obtain a unidirectional tape; 2) depositing an interface phase on the surface of a single fiber using chemical vapor deposition; 3) preparing a prepreg slurry by mixing carbon powder, dispersant, etc.; 4) impregnating the unidirectional tape with the slurry to obtain a prepreg tape; 5) layering the prepreg tape and the unimpregnated unidirectional tape at a layer ratio of 1:1 to 16:1 and a silicon carbide fiber angle of 0° to 90°; 6) obtaining the composite material through curing, pyrolysis, and melt infiltration densification. This invention breaks away from the traditional single-layer layup mode, constructing a continuous gas flow path through mixed layering, guiding process gas generation, solving the drawbacks of high porosity and matrix cracking, optimizing the material's stress state, and obtaining a composite material with both low density and high compactness, excellent mechanical properties at room temperature and high temperature, and excellent oxidation stability, shortening the preparation cycle, and meeting extreme service requirements.

The invention relates to a multimode optical fiber (1) with an optical axis (2). The multimode optical fiber has a single fiber core (11) surrounded by a cladding (12) and comprises a proximal end (3) for connection to an endoscopic system (13) and a distal end (4) for introduction into a sample (14). The distal end (4) has a light transmission surface (5), which extends substantially parallel to the optical axis (2) and is designed to transmit light radially in relation to the optical axis (2). The light transmission surface (5) is a substantially flat surface, a spherical segment surface or a paraboloid segment surface, and is a boundary surface of the fiber core (11). In addition, the distal end (4) has a light reflection surface (6), which extends such that the optical axis (2) at the distal end (4), a normal to the light transmission surface (5) and a normal to the light reflection surface (6) lie substantially in one plane and an angle between the light reflection surface (6) and the optical axis (2) is between 30° and 60°. In addition, the invention relates to an endoscopic system (13) for examining a sample (14) and to a method for examining a sample (14) by means of an endoscopic system (13).

The invention discloses a composite material fiber monofilament radial resistance testing device and a resistivity calculation method, and belongs to the technical field of composite material performance testing and structure health monitoring. The device comprises a base, a cross beam, a micrometer caliper type push rod and a plate-shaped electrode. The cross beam is an elastic component, the two ends of the cross beam are installed on stand columns of the base, plate-shaped electrodes on the cross beam can be driven by a push rod to move in parallel and opposite directions, and parallel and lossless clamping of fiber monofilaments is achieved. The base is provided with a monofilament fixing mechanism used for straightening and fixing fibers. During testing, after fiber monofilaments are straightened and aligned, a to-be-tested section of the fiber monofilaments is clamped in parallel by a plate-shaped electrode, constant current is applied, voltage drop is measured, and radial resistance is calculated. Furthermore, based on the actually measured resistance value, a finite element model of the corresponding size is established, and the radial conductivity of the fiber is inverted by adopting a bisection iteration method. The problem that the radial resistance of the micron-sized fiber monofilament is difficult to accurately measure is solved, the device is simple in structure, convenient to operate, low in cost and accurate and reliable in measurement result, and a key parameter acquisition means is provided for composite material microcosmic conductive network modeling and structure health monitoring.

This invention discloses a bidirectional continuous-variable quantum key distribution method and system based on frequency division duplexing in a single-transceiver ring network. The method is based on a monolithically integrated silicon photonics transceiver chip. By pre-setting optical carrier frequency offsets for the forward and reverse links, it isolates the quantum signal from Rayleigh backscattering noise in the fiber in the frequency domain. The transmitting end generates a broadband waveform containing quantum signals and pilot signals, which is transmitted bidirectionally through a single optical fiber. The receiving end uses a laser source from the same chip as the local oscillator for coherent heterodyne detection. A digital signal processing module performs orthogonalization correction, phase recovery, and matched filtering to suppress noise and extract the quantum signal to generate a secure key. This invention solves the problems of inflexible networking, low fiber utilization, and severe scattering noise interference in bidirectional transmission over a single fiber caused by the separation of the transmitting and receiving ends in integrated continuous-variable quantum key distribution systems. It provides a low-cost and highly flexible solution for metropolitan quantum ring networks.

The utility model relates to the technical field of material performance detection, in particular to a multi-angle bidirectional single fiber drawing test piece forming device, which aims to solve the problem that a forming device in the prior art cannot flexibly regulate and control the fiber angle, and comprises at least two forming units, the adjacent forming units are spliced to form a mold cavity, and the mold cavity is used for pouring a concrete test block; a plurality of fiber turning points are arranged on each of the two sides of the mold cavity; the fiber turning point on the left side of the mold cavity is a first turning point, and the fiber turning point on the right side of the mold cavity is a second turning point; one end of the fiber is fixed at the first turning point and penetrates through the test block in the mold cavity, and the other end is fixed at the second turning point. According to the scheme, a special device capable of flexibly regulating and controlling the fiber angle and realizing multi-angle bidirectional single fiber drawing test piece forming is developed.

The invention discloses single-fiber wavelength division optical transmission equipment and a system thereof. The equipment comprises a case, a service processing module, a wave combining and dividing module, a network management module, a power supply module and a heat dissipation module, the service processing module comprises at least one optical wavelength conversion unit, and the optical wavelength conversion unit is used for converting an accessed non-standard wavelength signal into a plurality of paths of standard wavelength signals; the wave combining and separating module comprises a wave combining unit and a wave separating unit, the wave combining unit is used for combining multiple paths of standard wavelength signals into one path of composite optical signal, and the wave separating unit is used for separating the composite optical signal into multiple paths of single wavelength signals; the network management module is used for monitoring the working state of each module in real time; the power supply module supports alternating current or direct current input and outputs stable voltage; the heat dissipation module is provided with a speed-adjustable heat dissipation fan. According to the scheme, optical fiber resources can be efficiently integrated, multiple services can be flexibly adapted, and the deployment and upgrading cost is low.

Provided is an artificial leather, which exhibits light transmitting properties and maintains its texture and touch while being dark-colored and having a medium or higher density, the artificial leather including a fiber entangled body formed of ultrafine fibers having an average single fiber diameter of 0.1 to μm; and an elastomer, in which the artificial leather has a thickness of 0.4 to 1.2 mm and a weight per unit area of 80 to 450 g / m2, where one surface of the artificial leather is a design surface colored with a dye and / or a pigment and satisfies the following Formulas (1) to (3):L*1≤55 . . .  (1)L0>50 . . .  (2)ΔL* <−5 . . .  (3)where L*1, L*0 and ΔL* are as defined.

An optical fiber routing tool that can protect optical fiber and facilitate routing of the optical fiber during installation. The optical fiber routing tool includes a pen-shaped elongated body that includes a body bore therethrough configured to receive one or more optical fiber. The tool can further include a removable tip for single fiber routing, the removable tip comprises a tip bore having a reduced diameter tip bore therethrough and configured to receive an optical fiber. Additionally, the tool can include other optional features, such as a tapered tip, an attachment feature such as clip for storing the removable tip when not in use, and / or pick features, for added functionality.

The utility model relates to optical communication technical field provides including shell, light emission subassembly and light receiving subassembly, light emission subassembly and light receiving subassembly are side by side in the shell, and light emission subassembly and light receiving subassembly are separated by the partition, the partition forms the first optical chamber for light receiving subassembly and the second optical chamber for light emission subassembly in the shell, still be equipped with the light beam device for the light beam transmission of light emission subassembly and for the light beam reflection of light receiving subassembly in the shell. A kind of single-fiber bidirectional optical transceiver of the utility model, light emission subassembly and light receiving subassembly are physically separated by using partition, so this can realize two relatively independent optical chambers, on the one hand can prevent the optical signal crosstalk between light emission subassembly and light receiving subassembly, on the other hand, using the position distinction of first optical chamber and second optical chamber, the positioning assembly of light emission subassembly and light receiving subassembly is facilitated, and interference caused by mutual encroachment of position when assembling does not appear.

The invention relates to a method for producing a fibrous web (309), preferably a tissue, paper or cardboard web or a nonwoven web, in particular a tissue web with a basis weight of 28g / m² 2 up to 42g / m² 2 , comprising the following steps: a) Raw material processing of cellulose-containing fibers (200) into single fibers and / or fiber bundles (209); b) Forming the individual fibers and / or fiber bundles (209) in an air stream to form a planar fiber fabric (300) on a forming belt (40) by a dry forming process; c) Application of a fluid, preferably water and / or a water-additive mixture, to the fiber fabric (300); d) Consolidation of the planar fiber layup (300) by applying pressure in at least one press gap (80, 83, 84); wherein the fiber fabric (305) is picked up by a transfer belt (103) after consolidation in a transfer area and is pre-dried in the transfer area by means of at least one pre-drying device (11) before the pre-dried fiber fabric (305) is dried in a drying device (10).

The invention relates to the field of daily chemicals, and discloses a micro-current dry-state soothing anti-allergy mask and a preparation method thereof.The micro-current dry-state soothing anti-allergy mask comprises a soothing anti-allergy functional layer and a friction power generation layer which are attached to each other; the soothing anti-allergy functional layer comprises a skin-core type nanofiber membrane and a conductive pattern; a skin layer of a single fiber in the skin-core nanofiber membrane is water-soluble silk fibroin loaded with sorbitol and essence components, and a core layer is water-soluble silk fibroin loaded with a soothing and anti-allergy plant extract composition; according to the principle of generating electricity through friction, micro-current massage in the mask applying process can be achieved under the condition that external equipment is not needed; the plant extract composition is loaded on the core layer of the nanofiber membrane by virtue of a coaxial electrostatic spinning technology, so that the influence of long-term contact between active ingredients in the plant extract composition and other ingredients in the essence can be avoided, the activity stability of the essence is improved, and the soothing and anti-allergy effects are improved.

Systems and methods for delivering multiple passive optical network services are disclosed. One system includes a first optical transmission service comprising a common wavelength pair routed from a source to each of a plurality of subscribers and a second optical transmission service comprising a plurality of unique wavelength pairs, each of the unique wavelength pairs assigned to a subscriber among the plurality of subscribers. The system includes a splitter optically connected to first fiber carrying the first optical transmission service, the splitter including a plurality of outputs each delivering the first optical transmission service, and a wavelength division multiplexer connected to a second fiber, the wavelength division multiplexer separating each of the unique wavelength pairs of the second optical transmission service onto separate optical fibers. The system further includes a plurality of second wavelength division multiplexers optically connected to a different output of the plurality of outputs of the splitter and to a different one of the unique wavelength pairs from the wavelength division multiplexer, thereby combining a unique wavelength pair and a common wavelength pair onto a single fiber to be delivered to a subscriber.

The invention provides a high-ductility fiber reinforced composite pultrusion profile, and relates to the technical field of pultrusion profiles. The sectional material body is made of single fiber or hybrid fiber; the profile body comprises flanges, webs, alignment ribs and dislocation ribs, the two sets of flanges are arranged in parallel, the two sets of webs are arranged in parallel and arranged between the two sets of flanges in the vertical direction, and cavities are formed between the two sets of flanges and the two sets of webs; the aligning ribs and the staggered ribs are arranged in the flanges, flange inner cavities are formed between the adjacent aligning ribs and staggered ribs and between the adjacent staggered ribs, and the aligning ribs and the web are longitudinally aligned. The local buckling strength of each component of the profile body structure is high, and the components are reasonable in arrangement and work cooperatively, so that the overall buckling strength of the structure is high; the profile body has high ductility under the action of impact load, cyclic load, local concentrated load and long-term continuous load, and the problem that a pultrusion profile is prone to brittle failure is solved.

The application discloses a kind of flexible heat-insulating fibrous ceramic aerogel with core-sheath structure and preparation method, belong to new material technical field.Preparation steps are: with Zr, Y, La preparation precursor, nanofiber ceramic aerogel core layer is prepared by electrostatic spinning and high temperature annealing;Again according to Zr, Y, La, Ti preparation nanoparticle precursor, after dispersing core layer, obtain initial gel by sol-gel;After ladder water bath aging, hydrophobic modification and solvent replacement, normal temperature and pressure drying and high temperature annealing again, obtain Zr-Y-La-Ti core-sheath structure fibrous ceramic aerogel.The inner layer of single fiber is nanofiber ceramic aerogel, and the outer layer is nanoparticle ceramic aerogel, closely adhere, and the surface is smooth.The aerogel has excellent flexibility and heat insulation performance, the minimum thermal conductivity is 21.96 mW / m·K, the maximum elastic compression deformation is 80%, the maximum working temperature is 1200 DEG C, and is suitable for high temperature heat protection and flexible deformation scene, which widens the application range of aerogel material.

The invention provides a copolymerization modified shortened polyacrylonitrile-based carbon fiber pre-oxidation device, and relates to the technical field of heating oxidation equipment.The copolymerization modified shortened polyacrylonitrile-based carbon fiber pre-oxidation device comprises a heating pool, a treating fluid is contained in the heating pool, a material mixing pot is arranged in the heating pool, a shaking unit is arranged in the heating pool, and fiber filaments can be pressed into the material mixing pot through the shaking unit; a vibration unit is arranged in the mixing pot and can vibrate the treating fluid to enable the treating fluid to wash the fibers to be uniformly oxidized. Through cooperation of the shaking unit and the shaking unit, a double homogenization system for dynamically shaking fiber tows and actively shaking the fiber tows by the treating fluid is constructed, so that the treating fluid forms directional flow and continuously washes the fiber tows, and the inner and outer layers of the tows and single fibers can be in full contact with the treating fluid; the problems of large pre-oxidation degree difference of inner and outer layers of tows, serious skin-core structure and concentrated local heat release easily occurring in a traditional dipping device are solved.

Disclosed herein are medical systems, devices, and methods for performing vascular treatments and diagnoses. A vascular device include an optical fiber including a single fiber core disposed offset from a central axis of the optical fiber. The single fiber enables logic of the system to perform determine multiple conditions of the device and the patient. The conditions may include one or more of blood flow parameters, infusate delivery parameters, location of the device within the patient, pH of the blood, oxygen level of the blood, damage to the optical fiber, or core temperature of the patient. The elongate medical device may be a catheter, a stylet, a guidewire, or a probe.

This invention provides a single-sheath dual-core conductive fiber, its preparation method, and its application, relating to the field of conductive fiber technology. The single-sheath dual-core conductive fiber of this invention, by setting two parallel conductive core layers, can construct a complete current loop within a single fiber, eliminating the need for external wiring or the collaborative use of two fibers, significantly simplifying system integration. The two core layers form redundant conductive paths; when one core layer suffers localized damage or poor contact, the other core layer can still maintain basic conductivity, ensuring the normal operation of the overall device, thereby greatly improving the reliability of the conductive fiber under complex working conditions. Employing a wet spinning simultaneous extrusion process, the sheath spinning solution and the core spinning solution are formed in one step using a single-sheath dual-core needle, avoiding the cumbersome post-processing steps and structural unevenness problems of coating or injection methods, and overcoming the limitations of existing wet spinning single-core structures, achieving a synergy between structural innovation and process advantages.