CN210030974U - Conductive fiber and composite spinning assembly for preparing conductive fiber - Google Patents
Conductive fiber and composite spinning assembly for preparing conductive fiber Download PDFInfo
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- CN210030974U CN210030974U CN201920688535.0U CN201920688535U CN210030974U CN 210030974 U CN210030974 U CN 210030974U CN 201920688535 U CN201920688535 U CN 201920688535U CN 210030974 U CN210030974 U CN 210030974U
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Abstract
The utility model relates to a conductive fiber and preparation conductive fiber's composite spinning subassembly, this conductive fiber includes: the protective layer and the conductive function layer are positioned in the protective layer; wherein the electrically conductive functional layer is triangular in cross-section of the electrically conductive fibers; the conductive functional layer is suitable for eliminating fabric static electricity; the utility model has the advantages that the conductive functional layer with the triangular structure in the cross section of the conductive fiber distributes the conductive components into the fiber matrix in a centralized way in the shape of a triangle, thereby improving the static leakage efficiency; meanwhile, the conductive agent is not easy to peel off, so that the durability of the conductive performance of the fiber is greatly improved; the three vertexes of the conductive function layer, which are triangular, are exposed out of the fiber surface and only close to the fiber surface, so that the friction performance of the fiber is greatly reduced, and the subsequent merging and weaving processing is facilitated.
Description
Technical Field
The utility model relates to a conductive fiber field especially relates to a conductive fiber and preparation conductive fiber's composite spinning subassembly.
Background
The generation of static electricity by rubbing of fabrics is a phenomenon often seen in daily life. Due to the existence of static electricity, the fabric is easy to adsorb dust, so that the production of industries such as high-precision instruments, biopharmaceuticals, foods and the like is seriously influenced; meanwhile, it is well known that the presence of static electricity increases the possibility of fire and explosion in flammable and explosive places. Therefore, these applications place particular demands on the properties of the fabric, particularly the antistatic properties. Even in the field of civil fabrics, static electricity still causes troubles, the generated static electricity cannot be leaked in time to cause a touch inductance, and the existence of the static electricity also causes dust absorption of clothes to be easily dirty.
Meanwhile, synthetic fibers with the advantages of high strength, good wear resistance, sufficient raw material sources and the like are widely applied to various fields of textile industry, but the hydrophobicity of the synthetic fibers is more likely to generate static electricity in daily life than natural source fibers such as cotton fibers and the like. The adoption of technical means to inhibit or eliminate the static electricity is an effective method for widening the use range of the synthetic fiber.
In the past, the most important method for eliminating static electricity of the fabric is to carry out antistatic after-treatment on the fabric, coat a surfactant on the surface of the fabric or add fibers spun by hydrophilic polymers into the fabric, and the methods have the defects of poor antistatic durability, poor water washing resistance or large influence of environmental temperature and humidity conditions to different degrees.
The progress of the composite spinning technology produces the conductive fiber which can completely and permanently eliminate static electricity, and the conductive fiber is added into the fabric and can permanently eliminate the static electricity. The conductive fiber obtained by composite spinning has the advantages that the conductive functional layer is embedded in the fiber matrix and is integrated with the fiber matrix, so that firm and high-conductivity effects are generated, the conductivity of the conductive fiber can be prevented from being influenced by the temperature and the humidity of the environment, the fiber weaving product is endowed with outstanding antistatic effect in any state, and meanwhile, due to the special processing technology, the water washing resistance is excellent, so that the conductive fiber has lasting antistatic property.
In the composite spinning technology adopted by the composite conductive fiber, the conductive agent accounting for 5-20% of the total weight of the fiber is added, so that the fiber has good performance of eliminating static electricity. But also greatly increases the difficulty of manufacturing and post-processing the fiber. The conductive agent to be added includes conductive carbon black, conductive metal oxide, organic conductive polymer, and the like. The composite conductive fiber can be produced into different cross-sectional shapes according to different processes and different components, so that the composite conductive fiber has different conductive performance, mechanical property and spinnability. In the prior art, patent CN200510102574.0 "manufacturing method of composite fiber with excellent conductivity" introduces an eccentric conductive fiber; patent CN00131865.9 "conductive composite fiber" describes conductive fiber in which carbon black is mainly uniformly distributed in a dotted manner on the outer side of the fiber; patent CN02805915.8 "fiber composite and its use" describes conductive fibers of sheath-core type (carbon black in sheath); patent CN200710075982.0 "durable high-performance composite conductive fiber and fiber manufacturing method" introduces a trilobal or multilayer composite conductive fiber; patent CN200410044897.4 "dope dyed composite conductive fiber" describes a conductive fiber with a sheath-core structure (conductive carbon black in the core layer); patent CN201593077U discloses a conductive fiber with conductive functional structure with five points uniformly distributed.
The conductive fibers with the conductive components distributed on the fiber skin layer have good conductive performance, but the conductive layer is completely exposed, so that the processing difficulty is increased, and the conductive layer has a greater risk of peeling in the later fiber bending and kneading process, so that the durability of the conductive layer is influenced. Although the conductive agent makes up the defects to a certain extent in the core layer, the conductivity of the fiber is obviously reduced, so that the fiber is difficult to enter high-level purification places with strict requirements on the conductivity.
The concentration and area ratio of the conductive part in the conductive fiber of the composite structure are related to the electrostatic leakage efficiency; in the geometric figure, the triangle is the simplest polygon and the shape which is most easy to form a stable structure, which is beneficial to the stability of two composite components in the spinning process and the mechanical stability of the fiber in the drafting process; meanwhile, three vertexes of the triangle are positioned on the surface of the fiber or close to the surface of the fiber, so that the friction and damage of the fiber surface in the subsequent treatment process can be reduced as much as possible.
Therefore, there is a need to develop a new conductive fiber and a composite spinning assembly for preparing the conductive fiber to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a conductive fiber and preparation conductive fiber's composite spinning subassembly to overcome the problem that traditional compound conductive fiber's conducting layer exposes totally and causes to peel off.
In order to solve the technical problem, the utility model provides a conductive fiber, it includes: the protective layer and the conductive function layer are positioned in the protective layer; wherein the electrically conductive functional layer is triangular in cross-section of the electrically conductive fibers; the conductive functional layer is suitable for eliminating fabric static electricity.
Further, any vertex of the triangle contacts the skin of the protective layer.
Further, any vertex of the triangle is inside the protective layer.
Further, the shape of the protective layer adopts a cylinder, a polygonal prism and a special-shaped body.
Further, the cross section of the conductive functional layer is shaped like a regular triangle, and the deviation degree from the regular triangle shape is not more than 20 degrees.
Further, the conductive functional layer includes: a conductive agent, a carrier resin and an auxiliary agent; the conductive agent is adapted to be incorporated into the carrier resin by the aid.
Further, the conductive agent is conductive carbon black.
Further, the conductive agent is a conductive metal oxide.
Further, the protective layer adopts polyamide or polyester fiber-forming high polymer.
On the other hand, the utility model provides a preparation conductive fiber's composite spinning subassembly, it includes: the spinneret plate comprises a conductive functional layer, a protective layer solution flow channel, a spinneret plate and spinneret holes, wherein the spinneret plate is used for connecting the conductive functional layer with the protective layer solution flow channel; after the hot-melt material passes through the conductive functional layer and the protective layer solution flow channel respectively, the hot-melt material is combined and solidified on the spinneret plate to form conductive fibers, and the conductive fibers are sprayed out through the spinneret orifice.
The utility model has the advantages that the utility model distributes the conductive components into the fiber base body in a triangle shape by the conductive functional layer which is in a triangle structure in the cross section of the conductive fiber, thereby improving the static leakage efficiency; meanwhile, the conductive agent is not easy to peel off, so that the durability of the conductive performance of the fiber is greatly improved; the three vertexes of the conductive function layer, which are triangular, are exposed out of the fiber surface and only close to the fiber surface, so that the friction performance of the fiber is greatly reduced, and the subsequent merging and weaving processing is facilitated.
Drawings
The present invention will be further explained with reference to the drawings and examples.
FIG. 1 is a structural view of the conductive fiber of the present invention;
fig. 2 is a cross-sectional view of the conductive functional layer of the present invention.
In the figure: protective layer 1, electrically conductive functional layer 2.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
Example 1
Fig. 1 is a structural view of the conductive fiber of the present invention.
In the present embodiment, as shown in fig. 1, the present embodiment provides a conductive fiber including: a protective layer 1, and a conductive functional layer 2 located in the protective layer 1; wherein the conductive functional layer 2 is triangular in cross section of the conductive fibers; the conductive functional layer 2 is adapted to eliminate fabric static electricity.
In the embodiment, the conductive functional layer 2 with the triangular structure in the cross section of the conductive fiber is used for intensively distributing conductive components into the fiber matrix in the triangular shape, so that the electrostatic leakage efficiency is improved; meanwhile, the conductive agent is not easy to peel off, so that the durability of the conductive performance of the fiber is greatly improved; the three vertexes of the conductive functional layer 2, which are triangles, are exposed out of the fiber surface and only close to the fiber surface, so that the friction performance of the fiber is greatly reduced, and the subsequent merging and weaving processing is facilitated.
For external conduction, as an alternative embodiment in this embodiment, any vertex of the triangle contacts the outer skin of the protective layer 1.
For internal conduction, as an alternative embodiment in this embodiment, any vertex of the triangle is inside the protective layer 1.
Specifically, the shape of the protective layer 1 adopts a cylinder, a polygonal prism and a special-shaped body.
Fig. 2 is a cross-sectional view of the conductive functional layer of the present invention.
In order to ensure the stability of the triangle, as shown in fig. 2, the cross section of the conductive functional layer 2 is shaped like a regular triangle, and the deviation degree from the regular triangle shape is not more than 20 °, which can be, but is not limited to, 18 °, 19 °, and 5 °.
In the present embodiment, as shown in fig. 2, the cross section of the conductive functional layer 2 is shaped like a regular triangle, and the degree of deviation from the regular triangle shape is defined as follows: the triangle-like part surrounded by the three apex lines of ABC is compared with a standard triangle, and the triangle-like part surrounded by the three apex lines of ABC is the shape of the functional conductive layer in the actual conductive fiber; the resulting cross-sectional shape deviates from the standard triangle due to the deviation of melt pressure control of the conductive and non-conductive portions during melt spinning. The degree of deviation is represented by the deviation angle in the graph. Wherein, the point D is the farthest deviation point, the point E is the perpendicular line from the point D to the point AB, and the included angle theta between the point AD and the point AB is the deviation degree.
In order to be able to improve the durability of the conductive properties of the fibers, the conductive functional layer 2 comprises: a conductive agent, a carrier resin and an auxiliary agent; the conductive agent is adapted to be incorporated into the carrier resin by the aid.
Specifically, the conductive agent is conductive carbon black.
Specifically, the conductive agent is a conductive metal oxide.
In this embodiment, the carrier resin is polyamide or polyester fiber-forming polymer.
Specifically, the protective layer 1 is made of polyamide or polyester fiber-forming polymer.
In this embodiment, as an alternative embodiment, the conductive function layer includes: conductive carbon black accounting for 15-35 percent of the total weight of the conductive functional layer, and polyamide and polyester fiber-forming high polymer accounting for 65-85 percent of the total weight of the conductive functional layer; the conductive carbon black accounts for 20-33% of the total weight of the conductive functional layer, and the polyamide and polyester fiber-forming high polymer accounts for 67-80% of the total weight of the conductive functional layer.
In this embodiment, as an alternative embodiment, the conductive function layer includes: conductive metal oxide accounting for 50-80% of the total weight of the conductive functional layer, and polyamide and polyester fiber-forming high polymer accounting for 20-50% of the total weight of the conductive functional layer; the conductive metal oxide accounts for 65-75% of the total weight of the conductive functional layer, and the polyamide and polyester fiber-forming high polymer accounts for 25-35% of the total weight of the functional layer.
In the present embodiment, the conductive carbon black of the conductive functional layer is a high-structure, high-conductivity nano-scale conductive carbon black having a specific resistance of not more than 10 in a powder state2Ω. cm, preferably a specific resistance of 10-3～101Omega cm. The basic particle size of the conductive carbon black is not more than 0.2 micrometer, and preferably 20-80 nanometers; the method of adding the conductive carbon black into the polymer carrier can be realized by adopting a method of mixing in a molten state, and a certain proportion of common auxiliary agents for granulation (in the embodiment, a dispersing agent and an antioxidant can be adopted) can be added for improving the fluidity and the product performance.
In this embodiment, as an optional embodiment, the conductive agent of the conductive functional layer is a conductive metal oxide with good conductivity, and the specific resistance in a powder state is less than or equal to 104Ω. cm, preferably a specific resistance of 101～102Omega cm. The basic particle size of the conductive agent is not more than 1 micron but more than 100nm, preferably 300-600 nm, the mode of adding the conductive agent into the polymer carrier can be realized by adopting a mixing method in a molten state, and a certain proportion of common auxiliary agents for granulation (in the embodiment, a dispersing agent and an antioxidant can be adopted) can be added for improving the fluidity and the product performance.
The addition amount of the conductive agent can influence the spinnability and the conductivity of the conductive functional layer, and the influence of the addition amount of the conductive agent on the conductivity of the conductive functional layer has a critical value; before the critical value, the conductivity of the conductive functional layer is increased along with the increase of the addition of the conductive agent, and the spinnability is deteriorated; when the critical value is reached, the addition amount of the conductive agent is increased, the conductive performance tends to be stable, and the spinnability still keeps the trend of deterioration until the spinning can not be carried out; in actual production, the adding amount of the conductive agent can be specifically set along with the variety of the conductive agent and the carrier and the change of product specifications so as to achieve the optimal balance of the conductive performance and the spinnability.
With the increase of the conductive agent content of the conductive functional layer in the conductive fiber, the fiber conductivity is increased, the mechanical property and the spinnability are reduced, when the conductive agent content of the conductive functional layer is too small, the melt is difficult to form a stable composite form in the assembly, and meanwhile, the proportion of the conductive components in the fiber is too small to form a conductive network, so that the conductivity of the fiber is insufficient and the basic requirement is difficult to meet, but when the conductive agent content of the conductive functional layer is too high, the fiber is difficult to form and the mechanical property is deteriorated, so that the conductive functional layer of the finally formed fiber accounts for 5% -40%, preferably 15% -25% of the total amount of the fiber, and the protective layer accounts for 60% -95%, preferably 75% -85% of the total amount of the fiber in percentage by weight (wt%).
Example 2
On the basis of example 1, the present example provides a composite spinning assembly for preparing conductive fibers, which comprises: the spinneret plate comprises a conductive functional layer, a protective layer solution flow channel, a spinneret plate and spinneret holes, wherein the spinneret plate is used for connecting the conductive functional layer with the protective layer solution flow channel; after the hot-melt material passes through the conductive functional layer and the protective layer solution flow channel respectively, the hot-melt material is combined and solidified on the spinneret plate to form conductive fibers, and the conductive fibers are sprayed out through the spinneret orifice.
In this embodiment, the hot-melt material passes through the melt flow channels of the conductive functional layer and the protective layer, and is combined into a triangular cross-sectional structure of the conductive functional layer on the upper layer of the spinneret plate, and then is ejected together through the spinneret orifice to form fibers, and the integrity of the triangular cross-sectional shape is related to the pressure balance of the two hot-melt materials, so as to form shape deviation.
In the embodiment, the triangular composite conductive fiber has structural stability and low friction, the spinnability is greatly improved, the porous conductive fiber multifilament can be further spun at a high flow rate, and then the porous conductive fiber multifilament is divided into small-hole or single-hole conductive fibers through a fiber separation process; the realization of the fiber dividing process in the production of the conductive fiber is beneficial to realizing the large-scale industrial production of the conductive fiber and lays a good foundation for the wide application of the conductivity.
In this embodiment, step (1): the conductive agent and the auxiliary agent (in this embodiment, the dispersant and the antioxidant) are proportionally put into a high-speed stirrer, and are stirred and uniformly mixed under the constant temperature condition.
In this embodiment, step (2): adding the mixed powder of the conductive agent prepared in the step (1) and carrier resin (polyamide or polyester fiber-forming polymer) into a double-screw extruder in proportion, setting a certain extrusion temperature, melting, extruding, cooling into strips, and granulating to obtain the conductive master batch.
In this embodiment, step (3): drying the conductive master batch prepared in the step (2) under a vacuum condition, and preparing the composite conductive fiber with the triangular cross section of the functional layer by using the conductive master batch and polyamide or polyester fiber-forming high polymer through a spinning drafting one-step method by adopting composite spinning equipment and a triangular composite spinning assembly; or producing the multifilament, wherein the multifilament can be further split into fibers to obtain triangular conductive fibers with certain specifications and capable of being processed later.
In this embodiment, the temperature in step (1) is controlled to be 80-120 ℃.
In the present embodiment, the extrusion temperature in the step (2) is controlled to be 20 to 40 ℃ above the melting point of the carrier resin used.
In this embodiment, the spinning and drawing one-step method described in step (3) specifically includes: respectively melting and extruding the conductive master batches and the polyamide or polyester fiber-forming high polymer, flowing through respective independent melt pipelines, compounding the mixture by a triangular composite spinneret plate, then spraying the mixture together through spinneret orifices to form strands, and then cooling, oiling, drafting and winding the strands to obtain the triangular composite conductive fiber or the multifilament thereof. The single or multiple filament of the winding filament is determined by the hole number design of the spinneret, and the multiple filament is a fiber form used which comprises multiple bundles of fibers and can be divided into single bundles again through the split fibers.
In this embodiment, as an implementation manner, a conductive functional layer 2 component is prepared by coating, dispersing, mixing, and performing twin-screw granulation on 30% of highly conductive carbon black powder with a particle size of 30 to 50nm and a specific resistance of 0.1 Ω · cm, 67% of polybutylene terephthalate (PBT) and about 3% of total amount of additives (in this embodiment, a dispersant and an antioxidant) in the mixture.
In this example, a fiber grade polyethylene terephthalate (PET) chip was used as the component of the protective layer 1.
In this embodiment, the two components are respectively added into a conductive functional layer 2 and a protective layer 1 bin of a composite spinning machine, and then enter a drying machine for drying; the conductive functional layer 2 component can also be dried by a vacuum drum and directly put into a dry slicing bin of the conductive functional layer 2 component; the components of the conductive functional layer 2 and the protective layer l are respectively melted and extruded by the screw of the conductive functional layer 2 and the screw of the protective layer l, and then are respectively measured by the metering pumps of the conductive functional layer 2 and the protective layer 1 according to the proportion of 22%: and extruding the melt into a spinning assembly according to the proportion of 78%, compounding the melt in the assembly to form a functional layer with a triangular cross section structure, and then spraying out through a spinning hole to obtain a nascent strand. Cooling, oiling, drafting and heat setting the strand silk, and winding into a tube to obtain the conductive fiber or the multifilament thereof, wherein the specification of the single-bundle silk can be 20-30D/2-4 f; for multifilament yarn, the gauge may be 176dtex/16 f.
For the splitting of the multifilament, the conductive fiber multifilament may be split into 8 bobbins on a splitting machine, and the vehicle speed is set to 450m/min so that the conductive fiber obtained has a linear density of 22.3dtex/2f, a breaking strength of 2.6cN/dtex, an elongation at break of 63%, and a fiber resistance value of 1.01X 106Omega/cm of single strand filaments.
In this example, as an implementation manner, the conductive functional layer 2 component is prepared by coating, dispersing, mixing, and performing twin-screw granulation on 70% of conductive metal oxide powder with a particle size of 500nm and a specific resistance of 10 Ω · cm, 28% of polyamide resin (PA6) and about 2% of total amount of additives (in this example, dispersant and antioxidant are used).
In this example, a polyamide resin (PA6) chip was used as the component of the protective layer 1.
In this embodiment, the two components are added into the conductive functional layer 2 and the protective layer 1 of the composite spinning machine respectively, and then enter the drying machine for drying, the conductive functional layer 2 component can also be directly put into the conductive functional layer 2 component dry slicing bin after being dried by a vacuum drum, and the conductive functional layer 2 and the protective layer l component are respectively melted and extruded by the conductive functional layer 2 and the protective layer l screw, and then are respectively pressed by 30% by the conductive functional layer 2 and the protective layer 1 metering pump: and extruding the melt into a spinning assembly at a ratio of 70% (v/v), compounding the melt in the assembly to form a triangular cross-sectional structure, and spraying the melt through a spinneret orifice to obtain a primary filament. And cooling, oiling, drafting and heat setting the strand silk, and winding the strand silk into a bobbin to obtain the conductive fiber or the multifilament thereof. Wherein the specification of the single bundle of filaments can be 20-30D/2-4 f; for multifilament yarn, the gauge may be 176dtex/16 f.
In this example, the multifilament of conductive fibers was divided into 8 bobbins on a fiber dividing machine, and the vehicle speed was set to 450m/min so that the conductive fibers were obtained with a linear density of 22.3dtex/2f, a breaking strength of 2.6cN/dtex, an elongation at break of 60%, and a fiber resistance of 6X 108Omega/cm of single strand filaments.
In the embodiment, the composite conductive fiber with the triangular cross section of the conductive functional layer is more suitable for a process of firstly producing conductive multifilament and then re-dividing the conductive multifilament, and the adopted conductive multifilament can be obtained by firstly spinning the conductive fiber porous multifilament with the hole number being 8-16 times of that of the final finished yarn and then dividing the re-divided conductive fiber into 8-16 yarn tubes according to the requirements of the existing production equipment.
In the embodiment, the composite conductive fiber with the triangular cross section of the conductive functional layer structurally and deeply distributes the conductive components into the fiber matrix, so that the conductive agent is not easy to peel off, and the durability of the conductive performance of the fiber is greatly improved. Greatly improves the leakage efficiency of the conductive to static electricity, greatly improves the conductive performance of the fiber, and ensures that the resistivity of the fiber is less than or equal to 102Omega cm, a good combination of fiber durability and conductivity is achieved by the conductive fibers.
In the embodiment, the structure with the triangular cross section of the conductive functional layer has fiber structure stability and low friction, and the spinnability is greatly improved.
In this embodiment, the structure with the triangular cross section of the conductive functional layer considers both the better conductivity and the smaller friction coefficient, and the porous conductive fiber multifilament can be further spun at a high flow rate, and then separated into the small-pore or single-pore conductive fibers by a fiber separation process. The realization of the fiber dividing process in the production of the conductive fiber is beneficial to realizing the large-scale industrial production of the conductive fiber and lays a good foundation for the wide application of the conductivity.
In summary, the utility model has the advantages that the conductive functional layer with the triangular structure in the cross section of the conductive fiber distributes the conductive components into the fiber matrix in a triangular shape, thereby improving the static leakage efficiency; meanwhile, the conductive agent is not easy to peel off, so that the durability of the conductive performance of the fiber is greatly improved; the three vertexes of the conductive function layer, which are triangular, are exposed out of the fiber surface and only close to the fiber surface, so that the friction performance of the fiber is greatly reduced, and the subsequent merging and weaving processing is facilitated.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. An electrically conductive fiber, comprising:
the protective layer and the conductive function layer are positioned in the protective layer; wherein
The conductive functional layer is triangular in the cross section of the conductive fiber;
the conductive functional layer is suitable for eliminating fabric static electricity.
2. The conductive fiber according to claim 1,
any vertex of the triangle contacts the skin of the protective layer.
3. The conductive fiber according to claim 1,
any vertex of the triangle is inside the protective layer.
4. The conductive fiber according to claim 1,
the protective layer is in the shape of a cylinder, a polygonal prism or a special-shaped body.
5. The conductive fiber according to claim 1,
the cross section of the conductive functional layer is shaped like a regular triangle, and the deviation degree of the conductive functional layer from the regular triangle is not more than 20 degrees.
6. The conductive fiber according to claim 1,
the conductive functional layer includes: a conductive agent, a carrier resin and an auxiliary agent;
the conductive agent is adapted to be incorporated into the carrier resin by the aid.
7. The conductive fiber according to claim 6,
the conductive agent is conductive carbon black.
8. The conductive fiber according to claim 6,
the conductive agent is a conductive metal oxide.
9. The conductive fiber according to claim 1,
the protective layer is made of polyamide or polyester fiber-forming high polymer.
10. A composite spin pack assembly for making electrically conductive fibers, comprising:
the spinneret plate comprises a conductive functional layer, a protective layer solution flow channel, a spinneret plate and spinneret holes, wherein the spinneret plate is used for connecting the conductive functional layer with the protective layer solution flow channel; wherein
And the hot-melt material is combined and solidified on the spinneret plate to form conductive fibers after passing through the conductive functional layer and the protective layer solution flow channel respectively, and the conductive fibers are sprayed out through the spinneret holes.
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