Fiber, preparation method thereof and fiber product

Abstract

The invention discloses a fiber, a preparation method thereof and a fiber product. The fiber comprises a core material, a middle layer and a shell layer, the surface of the core material is coated with the middle layer, and the surface, away from the core material, of the middle layer is coated with the shell layer; wherein the core material comprises a conductive material; the middle layer comprises a dielectric material, and the dielectric material comprises at least one of barium titanate, aluminum oxide, titanium dioxide, silicon dioxide, barium sulfate, magnesium oxide, hexagonal boron nitride, silicon nitride, zinc oxide and calcium carbonate; the shell layer includes an electroluminescent material. The fiber can realize human body touch luminescence in the presence of a power supply, has a good luminescence effect, can be used for motion tracking and information display, and is beneficial to development of wearable intelligent fibers or textiles capable of real-time interactive display.

Description

Technical Field

[0001] The present application belongs to the technical field of functional textile materials, and specifically relates to a fiber and a preparation method thereof, and a fiber product. Background Art

[0002] The emergence of wearable technology has greatly promoted the development of smart textiles. Smart textiles are expected to transform everyday clothing into interactive and responsive clothing. People can interact with smart textiles through various signals, including touch, vision, sound, temperature, pressure and bioelectric signals. Among them, visual signals are an important aspect of achieving such interaction, which allows users to receive feedback and information directly from textiles. Visual signals include dynamic displays that use LEDs or other light-emitting elements to display text, graphics and symbols, and color changes that respond to temperature or current using thermochromic or electrochromic materials.

[0003] Many current methods for implementing visual signals still rely on rigid electronic components and complex circuits, which affects the wearing comfort of the final product. For example, a related technology involves integrating commercial display devices directly onto textiles. However, luminous display devices require additional signal processing modules and complex control circuits. This type of method not only faces processing difficulties, but the rigidity of these display devices also affects the flexibility of smart textiles and reduces the comfort of users. Summary of the invention

[0004] To solve the above problems, the present application provides a fiber and a preparation method thereof, and a fiber product. The fiber can emit light when touched by the human body in the presence of a power source, and has a good luminous effect. It can be used for motion tracking and information display, and is conducive to the development of wearable smart fibers or textiles that can display real-time interactively.

[0005] In a first aspect, the present application provides a fiber, comprising a core material, an intermediate layer and a shell layer, wherein the intermediate layer is coated on the surface of the core material, and the shell layer is coated on the surface of the intermediate layer away from the core material;

[0006] Wherein, the core material comprises a conductive material;

[0007] The intermediate layer includes a dielectric material, and the dielectric material includes at least one of barium titanate, aluminum oxide, titanium dioxide, silicon dioxide, barium sulfate, magnesium oxide, hexagonal boron nitride, silicon nitride, zinc oxide, and calcium carbonate;

[0008] The shell layer includes an electroluminescent material.

[0009] According to the fiber of the present application, a power source can be connected to the core material, and the power source can be, for example, a power source with an AC voltage of 250V and an AC frequency of 20kHz. In the fiber of the present application, the middle layer includes a specific type of dielectric material, and these dielectric materials have a high dielectric constant. Thus, the middle layer can not only store electric charge, but also avoid electric shock when the human body contacts the fiber. After the fiber of the present application is connected to the power source, each layer can synergize through the conductivity, dielectric properties and electroluminescent properties of the material to achieve human touch luminescence. The fiber of the present application can realize motion tracking and information display, which is conducive to the development of wearable smart fibers or textiles that can display interactively in real time, and has good wearing comfort compared with smart fabrics designed in traditional ways. Therefore, the fiber provided by the present application has a wide range of application value.

[0010] In any embodiment of the present application, the core material includes at least one of conductive silver nylon yarn, copper wire, and steel wire yarn.

[0011] In any embodiment of the present application, the middle layer further comprises a first polymer matrix, the first polymer matrix comprising at least one of styrene-butadiene-styrene block copolymer, hydrogenated styrene-butadiene-styrene block copolymer, polyvinylidene fluoride, polyvinylidene fluoride hexafluoropropylene copolymer, and polyvinylidene fluoride trifluoroethylene copolymer;

[0012] Optionally, the mass ratio of the dielectric material to the first polymer matrix is ​​1:1 to 5:1.

[0013] In any embodiment of the present application, the shell layer further comprises a second polymer matrix, and the second polymer matrix comprises at least one of styrene-butadiene-styrene block copolymer, hydrogenated styrene-butadiene-styrene block copolymer, polyvinylidene fluoride, polyvinylidene fluoride hexafluoropropylene copolymer, and polyvinylidene fluoride trifluoroethylene copolymer;

[0014] The electroluminescent material includes copper ion doped zinc sulfide and / or copper manganese ion doped zinc sulfide.

[0015] In any embodiment of the present application, the diameter of the fiber is 300 μm to 700 μm;

[0016] Wherein, the diameter of the core material is 30 μm to 100 μm;

[0017] The thickness of the middle layer is 30 μm to 100 μm;

[0018] The thickness of the shell layer is 30 μm to 200 μm.

[0019] In any embodiment of the present application, the fiber further comprises a transparent conductive layer, and the transparent conductive layer is coated on the surface of the shell layer away from the middle layer;

[0020] Optionally, the transparent conductive layer includes silver nanowires and / or poly(3,4-ethylenedioxythiophene)-poly(styrene sulfonic acid).

[0021] The second aspect of the present application provides a method for preparing the fiber of the first aspect, comprising:

[0022] Provide core materials;

[0023] An intermediate layer is formed on the surface of the core material to obtain initial fibers;

[0024] A shell layer is formed on the surface of the initial fiber to obtain the fiber.

[0025] In any embodiment of the present application, an intermediate layer is formed on the surface of the core material to obtain an initial fiber, comprising:

[0026] Providing an intermediate layer slurry, the intermediate layer slurry comprising a first polymer matrix, a dielectric material and a first organic solvent, wherein, based on the total mass of the intermediate layer slurry, the mass percentage of the first polymer matrix is ​​15% to 40%, the mass ratio of the dielectric material to the first polymer matrix is ​​1:1 to 5:1, and optionally, the first organic solvent comprises at least one of N,N-dimethylformamide, acetone, formic acid, hexafluoroisopropanol and acetonitrile;

[0027] The intermediate layer slurry is placed in a first accommodation cavity of a first container, wherein the first container has at least one first through hole connected to the first accommodation cavity, and the aperture of the first through hole is 0.21 mm to 0.41 mm;

[0028] The coating of the intermediate layer slurry includes passing the core material through the first through hole at a speed of 0.5 m / min to 2 m / min for a preset number of times and drying, thereby forming an intermediate layer on the surface of the core material to obtain initial fibers.

[0029] In any embodiment of the present application, a shell layer is formed on the surface of an initial fiber to obtain a fiber, comprising:

[0030] Providing a shell layer slurry, the shell layer slurry comprising a second polymer matrix, an electroluminescent material and a second organic solvent, wherein, based on the total mass of the shell layer slurry, the mass percentage of the second polymer matrix is ​​30% to 60%, the mass ratio of the electroluminescent material to the second polymer matrix is ​​1:1 to 5:1, and optionally, the second organic solvent comprises at least one of toluene, N,N-dimethylformamide, acetone, formic acid, hexafluoroisopropanol and acetonitrile;

[0031] The shell layer slurry is placed in a second accommodating cavity of a second container, wherein the second container has at least one second through hole connected to the second accommodating cavity, and the aperture of the second through hole is 0.3 mm to 0.61 mm;

[0032] The coating of the shell slurry comprises passing the initial fiber through the second through hole at a speed of 0.5 m / min to 2 m / min for a preset number of times and drying, thereby forming a shell layer on the surface of the initial fiber to obtain the fiber.

[0033] In any embodiment of the present application, after forming the shell layer on the surface of the intermediate layer, the method further comprises:

[0034] A transparent conductive layer is formed on the surface of the shell layer.

[0035] In any embodiment of the present application, a transparent conductive layer is formed on the surface of the shell layer, comprising:

[0036] Providing a dispersion of a transparent conductive layer material;

[0037] The dispersion is placed in a third containing cavity of a third container, wherein the third container has at least one third through hole connected to the third containing cavity, and the aperture of the third through hole is 0.3 mm to 0.61 mm;

[0038] The dispersion is coated, including passing the fiber through the third through hole at a speed of 0.5 m / min to 2 m / min for a preset number of times and drying the fiber, thereby forming a transparent conductive layer on the surface of the fiber.

[0039] A third aspect of the present application provides a fiber product, comprising the fiber of the first aspect, or a fiber prepared according to the method of the second aspect.

[0040] In any embodiment of the present application, the fiber product is a fabric. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 A schematic diagram of the structure of a fiber provided in one embodiment of the present application;

[0042] Figure 2 A schematic diagram of the structure of a fiber provided in another embodiment of the present application;

[0043] Figure 3 This is a graph showing the fiber luminescence brightness test results of Examples 1-11;

[0044] Figure 4 The dielectric constant test results of the components of the middle layer and the shell layer used in the fibers of Examples 1-12;

[0045] Figure 5 This is the luminous mode test diagram of Example 1;

[0046] Figure 6 This is a light emitting mode test diagram of Example 12;

[0047] Figure 7 This is a diagram showing the fiber tensile fracture test results of Example 4;

[0048] Figure 8 A fiber product obtained by embroidering a customized pattern using the fiber in Example 4;

[0049] Fig. 9 A fabric woven from the fibers in Example 4;

[0050] Fig.10 To use Fig. 9 The schematic diagram of the fabric realizing touch motion tracking is shown;

[0051] Fig.11 Schematic diagrams of realizing selective display of patterns using the patterns embroidered with fibers in Examples 4 (water on the fingertips) and 12 (no water on the fingertips);

[0052] Fig.12 This is a schematic diagram of realizing touch information display using the pattern obtained by fiber embroidery in Example 12 (no water on the fingertips). DETAILED DESCRIPTION

[0053] In order to make the application purpose, technical solution and beneficial technical effect of the present application clearer, the present application is further described in detail in conjunction with the embodiments below. It should be understood that the embodiments described in this specification are only for explaining the present application, not for limiting the present application.

[0054] For simplicity, this application only explicitly discloses some numerical ranges. However, any lower limit can be combined with any upper limit to form an unclearly recorded range; and any lower limit can be combined with other lower limits to form an unclearly recorded range, and any upper limit can be combined with any other upper limit to form an unclearly recorded range. In addition, although not clearly recorded, each point or single value between the range endpoints is included in the range. Thus, each point or single value can be combined with any other point or single value as its own lower limit or upper limit or with other lower limits or upper limits to form an unclearly recorded range.

[0055] In the description of the present application, it should be noted that, unless otherwise specified, “above” and “below” are inclusive of the number, and the “multiple” in “one or more” means two or more than two.

[0056] The above application content of the present application is not intended to describe each disclosed embodiment or each implementation in the present application. The following description more specifically illustrates exemplary embodiments. In many places throughout the application, guidance is provided by a series of examples, which can be used in various combinations. In each example, enumeration is only used as a representative group and should not be interpreted as exhaustive.

[0057] As described in the background technology, many current methods for implementing visual signals still rely on rigid electronic components and complex circuits, which affects the wearing comfort of the final product. For example, a related technology involves integrating commercial display devices directly onto textiles. However, light-emitting display devices require additional signal processing modules and complex control circuits. Such methods not only face processing difficulties, but the rigidity of these display devices also affects the flexibility of smart textiles, reducing the wearing comfort of users.

[0058] Related technologies also involve weaving luminous or color-responsive fibers into textiles, which can maintain the flexibility of textiles, but this approach also faces challenges. Specifically, current luminous fibers mainly use dual-electrode structures, including warp and weft, coaxial and winding structures. These structures usually have exposed electrodes, which poses a risk of electrode failure and wear safety hazards. Although the structure of color-responsive fibers is relatively simple, their display capabilities and response times are limited. To achieve effective interaction, a display control module is also required. The complexity of the control varies depending on the type of display material. Although color-changing fibers do not require additional electronic devices, their interactive functions are largely affected by the intrinsic properties of the material.

[0059] Therefore, it remains challenging to develop wearable smart fibers or textiles capable of real-time interactive displays.

[0060] In view of this, the inventors, after in-depth research and a large number of experiments, provide a fiber and a preparation method thereof, and a fiber product.

[0061] In a first aspect, the present application provides a fiber, comprising a core material, an intermediate layer and a shell layer, wherein the intermediate layer is coated on the surface of the core material, and the shell layer is coated on the surface of the intermediate layer away from the core material.

[0062] The core material includes a conductive material.

[0063] The intermediate layer includes a dielectric material, and the dielectric material includes at least one of barium titanate, aluminum oxide, titanium dioxide, silicon dioxide, barium sulfate, magnesium oxide, hexagonal boron nitride, silicon nitride, zinc oxide, and calcium carbonate.

[0064] The shell layer includes an electroluminescent material.

[0065] According to the fiber of the present application, a power source can be connected to the core material, and the power source can be, for example, a power source with an AC voltage of 250V and an AC frequency of 20kHz. In the fiber of the present application, the middle layer includes a specific type of dielectric material, and these dielectric materials have a high dielectric constant. Thus, the middle layer can not only store electric charge, but also avoid electric shock when the human body contacts the fiber. After the fiber of the present application is connected to the power source, each layer can synergize through the conductivity, dielectric properties and electroluminescent properties of the material to achieve human touch luminescence. The fiber of the present application can realize motion tracking and information display, which is conducive to the development of wearable smart fibers or textiles that can display interactively in real time, and has good wearing comfort compared with smart fabrics designed in traditional ways. Therefore, the fiber provided by the present application has a wide range of application value.

[0066] Figure 1 is an example of the fiber of this application. Figure 1 As shown, the fiber may include a core material 10, an intermediate layer 20 and a sheath layer 30. The core material 10 is composed of a plurality of conductive material strands. It is understood that the core material 10 may also be composed of a single conductive material strand.

[0067] Figure 1 The fiber shown can emit light in a point-emitting mode when it is touched by a human hand when it is powered on. When a human hand touches a conductive solution (such as tap water) and then touches the fiber that is powered on, the fiber can also emit light in a line-emitting mode.

[0068] In some embodiments, the core material may include at least one of conductive silver nylon yarn, copper wire, and steel wire yarn.

[0069] In some embodiments, the intermediate layer may further include a first polymer matrix including at least one of styrene-butadiene-styrene block copolymer, hydrogenated styrene-butadiene-styrene block copolymer, polyvinylidene fluoride, polyvinylidene fluoride hexafluoropropylene copolymer, and polyvinylidene fluoride trifluoroethylene copolymer.

[0070] In some embodiments, the mass ratio of the dielectric material to the first polymer matrix may be 1:1 to 5:1.

[0071] Exemplarily, the dielectric material may be a nanoparticle filler, which may be dispersed in the first polymer matrix, and the mass ratio of the nanoparticle filler to the first polymer matrix is ​​within a suitable range, so that the intermediate layer has a higher dielectric constant.

[0072] According to the above embodiment, the middle layer includes the first polymer matrix and the dielectric material. Therefore, the middle layer can have better flexibility and better mechanical properties, which is conducive to improving the wearing comfort and the durability of the fiber.

[0073] In some embodiments, the shell layer may further include a second polymer matrix including at least one of styrene-butadiene-styrene block copolymer, hydrogenated styrene-butadiene-styrene block copolymer, polyvinylidene fluoride, polyvinylidene fluoride hexafluoropropylene copolymer, and polyvinylidene fluoride trifluoroethylene copolymer.

[0074] The electroluminescent material may include copper ion doped zinc sulfide and / or copper manganese ion doped zinc sulfide.

[0075] Exemplarily, the electroluminescent material may be electroluminescent particles, and the electroluminescent particles may be dispersed in the first polymer matrix, so that the shell layer has a uniformly distributed light-emitting area.

[0076] According to the above embodiment, the shell layer includes the second polymer matrix and the electroluminescent material. Thus, the shell layer can have better flexibility and better mechanical properties, which is beneficial to improving the wearing comfort and the durability of the fiber.

[0077] In some embodiments, the diameter of the fiber may be 300 μm to 700 μm.

[0078] In some embodiments, the diameter of the core material may be 30 μm to 100 μm. The diameter of the core material may refer to the maximum dimension of the core material along the radial direction of the fiber.

[0079] In some embodiments, the thickness of the intermediate layer may be 30 μm to 100 μm. In some embodiments, the thickness of the intermediate layer may be defined by Formula 1 below.

[0080] d1=(D0-D1-2d2-2d3) / 2 Formula 1

[0081] In Formula 1, d1 may represent the thickness of the intermediate layer, D0 may represent the fiber diameter, D1 may represent the core material diameter, d2 may represent the shell layer thickness, and d3 may represent the transparent conductive layer thickness.

[0082] In some embodiments, the thickness of the shell layer may be 30 μm to 200 μm.

[0083] In some embodiments, the fiber may further include a transparent conductive layer, wherein the transparent conductive layer is coated on a surface of the shell layer away from the intermediate layer. Figure 2 is another example of the fiber of the present application. Figure 2 As shown, the fiber may include a core material 10 , an intermediate layer 20 , a shell layer 30 , and a transparent conductive layer 40 .

[0084] Alternatively, in some embodiments, the transparent conductive layer may include silver nanowires and / or poly(3,4-ethylenedioxythiophene)-poly(styrene sulfonic acid).

[0085] The fiber according to the above embodiment includes a transparent conductive layer and can have a larger light emitting area. Therefore, when the fiber is powered on and touched by a human hand, it can emit light in a linear light emitting mode.

[0086] A second aspect of the present application provides a method for preparing the fiber of the first aspect, comprising the following steps S10 to S30.

[0087] S10, core material provided.

[0088] S20, forming an intermediate layer on the surface of the core material to obtain initial fibers.

[0089] S30, forming a shell layer on the surface of the initial fiber to obtain the fiber.

[0090] The above-mentioned core material, intermediate layer and shell layer may include the core material, intermediate layer and shell layer of any embodiment of the first aspect. The embodiments of the core material, intermediate layer and shell layer have been described above and will not be repeated here.

[0091] In the above steps S20 and S30, the method of forming the intermediate layer and the shell layer is not limited, and it can be achieved by methods known in the art. For example, the intermediate layer and the shell layer can be formed by dipping, coextrusion, etc., as long as the intermediate layer and the shell layer can be formed with relatively uniform thickness.

[0092] In some embodiments, step S20, forming an intermediate layer on the surface of the core material to obtain initial fibers, may specifically include the following steps S21 to S23.

[0093] S21, providing an intermediate layer slurry, the intermediate layer slurry comprising a first polymer matrix, a dielectric material and a first organic solvent, wherein, based on the total mass of the intermediate layer slurry, the mass percentage of the first polymer matrix is ​​15% to 40%, and the mass ratio of the dielectric material to the first polymer matrix is ​​1:1 to 5:1.

[0094] In some embodiments, the first organic solvent may include at least one of N,N-dimethylformamide, acetone, formic acid, hexafluoroisopropanol, and acetonitrile. Alternatively, in some embodiments, the first organic solvent may include at least two of N,N-dimethylformamide, acetone, formic acid, hexafluoroisopropanol, and acetonitrile.

[0095] S22, placing the intermediate layer slurry in a first containing cavity of a first container, wherein the first container has at least one first through hole connected to the first containing cavity, and the aperture of the first through hole is 0.21 mm to 0.41 mm.

[0096] S23, coating the intermediate layer slurry, including passing the core material through the first through hole at a speed of 0.5 m / min to 2 m / min for a preset number of times and drying, thereby forming an intermediate layer on the surface of the core material to obtain initial fibers.

[0097] In step S23, the preset number of times can be adjusted according to factors such as the type of the middle layer slurry, the thickness consistency requirement of the middle layer, etc. Exemplarily, the preset number of times can be three times, for example, the core material can be passed through the first through hole at a speed of 0.5 m / min to 2 m / min and dried, then passed through the first through hole at a speed of 0.5 m / min to 2 m / min and dried again, and then passed through the first through hole at a speed of 0.5 m / min to 2 m / min and dried again, to obtain the initial fiber.

[0098] By forming the intermediate layer according to the above-mentioned embodiment, not only the thickness of the intermediate layer can be controlled, but also the thickness of the intermediate layer can be made uniform at all locations.

[0099] In some embodiments, step S30, forming a shell layer on the surface of the initial fiber to obtain the fiber, may specifically include the following steps S31 to S33.

[0100] S31, providing a shell slurry, the shell slurry comprising a second polymer matrix, an electroluminescent material and a second organic solvent, wherein, based on the total mass of the shell slurry, the mass percentage of the second polymer matrix is ​​30% to 60%, and the mass ratio of the electroluminescent material to the second polymer matrix is ​​1:1 to 5:1.

[0101] Alternatively, in some embodiments, the second organic solvent may include at least one of toluene, N,N-dimethylformamide, acetone, formic acid, hexafluoroisopropanol, and acetonitrile.

[0102] S32, placing the shell slurry in a second containing cavity of a second container, wherein the second container has at least one second through hole connected to the second containing cavity, and the aperture of the second through hole is 0.3 mm to 0.61 mm.

[0103] S33, coating a shell slurry, including passing the initial fiber through the second through hole at a speed of 0.5 m / min to 2 m / min for a preset number of times and drying, thereby forming a shell layer on the surface of the initial fiber to obtain a fiber.

[0104] In step S33, the preset number of times can be adjusted according to factors such as the type of shell slurry, the thickness consistency requirement of the shell layer, etc. Exemplarily, the preset number of times can be twice, for example, the initial fiber can be passed through the second through hole at a speed of 0.5 m / min to 2 m / min and dried, then passed through the second through hole at a speed of 0.5 m / min to 2 m / min and dried again, and then passed through the second through hole at a speed of 0.5 m / min to 2 m / min and dried again to obtain the fiber.

[0105] By forming the shell layer according to the above-mentioned embodiment, not only the thickness of the shell layer can be controlled, but also the thickness of the shell layer can be made uniform at all locations.

[0106] In some embodiments, after forming the shell layer on the surface of the intermediate layer, the method may further include:

[0107] A transparent conductive layer is formed on the surface of the shell layer.

[0108] In some embodiments, forming a transparent conductive layer on the surface of the shell layer may specifically include:

[0109] A dispersion of a transparent conductive layer material is provided.

[0110] The dispersion is placed in a third containing cavity of a third container. The third container has at least one third through hole connected to the third containing cavity. The aperture of the third through hole is 0.3 mm to 0.61 mm.

[0111] The dispersion is coated, including passing the fiber through the third through hole at a speed of 0.5 m / min to 2 m / min for a preset number of times and drying the fiber, thereby forming a transparent conductive layer on the surface of the fiber.

[0112] In the above embodiment, the dispersion of the transparent conductive layer material may include a transparent conductive material, such as silver nanowires and / or poly(3,4-ethylenedioxythiophene)-poly(styrene sulfonic acid). The dispersion of the transparent conductive layer material may also include a dispersion medium, and the dispersion medium may include ethanol and / or water, etc., in which the transparent conductive material is uniformly dispersed. The aperture of the third through hole may be selected according to the fiber diameter and the target thickness of the transparent conductive layer. Exemplarily, the aperture of the third through hole may be the same as the second aperture.

[0113] In the step of coating the dispersion, the preset number of times can be adjusted according to factors such as the type of the dispersion of the transparent conductive layer material, the thickness consistency requirement of the transparent conductive layer, etc. Exemplarily, the preset number of times can be twice, for example, the fiber can be passed through the third through hole at a speed of 0.5 m / min to 2 m / min and dried, and then passed through the third through hole again at a speed of 0.5 m / min to 2 m / min and dried to obtain a fiber with a transparent conductive layer on the surface.

[0114] A third aspect of the present application provides a fiber product, comprising the fiber of the first aspect, or a fiber prepared according to the method of the second aspect.

[0115] The fiber product of the present application may include any product comprising the fiber of the first aspect of the present application.

[0116] The fiber product comprises the fiber of the first aspect, thereby being able to realize motion tracking, information display or touch luminescence functions.

[0117] In some embodiments, the fiber product may be a fabric. The fabric may be a fabric having a single-layer or multi-layer structure made from the fiber of the first aspect by weaving, knitting, or the like. The fiber of the first aspect may be used alone to prepare the fabric, or may be woven together with other functional fibers into a single-layer or multi-layer fabric structure. The fabric may realize motion tracking, information display, or touch luminescence functions, and has better wearing comfort.

[0118] Example

[0119] The following examples describe the disclosure of the present invention in more detail, and these examples are intended for illustrative purposes only, as various modifications and variations within the scope of the disclosure of the present invention will be apparent to those skilled in the art. Unless otherwise stated, all parts, percentages, and ratios reported in the following examples are by weight, and all reagents used in the examples are commercially available or synthesized according to conventional methods and can be used directly without further processing, and the instruments used in the examples are commercially available.

[0120] Example 1

[0121] 1) Dipping of the intermediate layer: Dissolve polyvinylidene fluoride hexafluoropropylene copolymer (PVDF-HFP) in a mixed solvent of N, N-dimethylformamide and acetone (the mass ratio of the two solvents is 7:3, and the mass ratio of solute to solvent is 1:3), stir at 60°C for 2h to obtain a colorless and transparent solution. Add barium titanate (BaTiO3) nanoparticle filler (the mass ratio of BaTiO3 to PVDF-HFP is 2:1) to the solution, and stir the mixture at a speed of 3000rpm for 10min to obtain an intermediate layer slurry. Put the intermediate layer slurry into the receiving cavity of the first container, the first container includes a first through hole connected to the receiving cavity, and the aperture of the first through hole is 0.21mm. Pass the core silver-plated nylon yarn with a diameter of 85μm through the first through hole for coating three times. The temperature of the drying zone is maintained at about 150°C. The speed of the fiber collection roller is controlled at 0.84m / min.

[0122] 2) Dip coating of shell layer: Dissolve styrene-butadiene-styrene copolymer (SBS) in toluene (mass ratio of solute to solvent is 1:2), and then stir at 3000 rpm for 20 min with a high-speed stirrer to obtain a colorless and transparent solution. Then, copper ions of electroluminescent particles are doped with zinc sulfide (ZnS:Cu 2+ ) was added to the solution (ZnS:Cu 2+ The mass ratio of 1% to SBS is 5:1), and the mixture is uniformly stirred at a speed of 3000 rpm for 10 minutes using a high-speed stirrer to obtain a shell slurry. The shell slurry is placed in a holding cavity of a second container, the second container includes a second through hole connected to the holding cavity, and the aperture of the second through hole is 0.41 mm. The initial fiber obtained in 1) is coated twice through the second through hole. The temperature of the drying zone is maintained at about 150°C. The speed of the fiber collection roller is controlled at 0.84 m / min.

[0123] Example 2

[0124] 1) Dipping of the intermediate layer: PVDF-HFP was dissolved in a mixed solvent of N, N-dimethylformamide and acetone (the mass ratio of the two solvents was 7:3, and the mass ratio of the solute to the solvent was 1:3), and stirred at 60°C for 2h to obtain a colorless and transparent solution. BaTiO3 filler (the mass ratio of BaTiO3 to PVDF-HFP was 2:1) was added to the solution, and the mixture was stirred at a speed of 3000rpm for 10min to obtain an intermediate layer slurry. The intermediate layer slurry was placed in the accommodating cavity of the first container, and the first container included a first through hole connected to the accommodating cavity, and the aperture of the first through hole was 0.21mm. The core silver-plated nylon yarn with a diameter of 85μm was passed through the first through hole and coated three times. The temperature of the drying zone was maintained at about 150°C. The speed of the fiber collection roller was controlled at 0.84m / min.

[0125] 2) Dip coating of shell layer: SBS was dissolved in toluene (the mass ratio of solute to solvent was 1:2), and then stirred at 3000 rpm for 20 min using a high-speed stirrer to obtain a colorless and transparent solution. 2+ Added to the solution (ZnS:Cu 2+ The mass ratio of 1% to SBS is 5:1), and the mixture is uniformly stirred at a speed of 3000 rpm for 10 minutes using a high-speed stirrer to obtain a shell slurry. The shell slurry is placed in the accommodating cavity of the second container, and the second container includes a second through hole connected to the accommodating cavity, and the aperture of the second through hole is 0.51 mm. The initial fiber obtained in 1) is coated twice through the second through hole. The temperature of the drying zone is maintained at about 150°C. The speed of the fiber collecting roller is controlled at 0.84 m / min.

[0126] Example 3

[0127] 1) Dipping of the intermediate layer: PVDF-HFP was dissolved in a mixed solvent of N, N-dimethylformamide and acetone (the mass ratio of N, N-dimethylformamide and acetone was 7:3, and the mass ratio of solute to solvent was 1:3), and stirred at 60°C for 2h to obtain a colorless and transparent solution. BaTiO3 filler (the mass ratio of BaTiO3 to PVDF-HFP was 2:1) was added to the solution, and the mixture was stirred at a speed of 3000rpm for 10min to obtain a slurry for preparing the intermediate layer. The intermediate layer slurry was placed in the accommodating cavity of the first container, and the first container included a first through hole connected to the accommodating cavity, and the aperture of the first through hole was 0.21mm. The core silver-plated nylon yarn with a diameter of 85μm was passed through the first through hole and coated three times. The temperature of the drying zone was maintained at about 150°C. The speed of the fiber collection roller was controlled at 0.84m / min.

[0128] 2) Dip coating of shell layer: SBS was dissolved in toluene (the mass ratio of solute to solvent was 1:2), and then stirred at 3000 rpm for 20 min using a high-speed stirrer to obtain a colorless and transparent solution. 2+ Added to the solution (ZnS:Cu 2+ The mass ratio of 1% to SBS is 5:1), and the mixture is uniformly stirred at a speed of 3000 rpm for 10 minutes using a high-speed stirrer to obtain a shell slurry. The shell slurry is placed in the accommodating cavity of the second container, and the second container includes a second through hole connected to the accommodating cavity, and the aperture of the second through hole is 0.61 mm. The initial fiber obtained in 1) is coated twice through the second through hole. The temperature of the drying zone is maintained at about 150°C. The speed of the fiber collecting roller is controlled at 0.84 m / min.

[0129] Example 4

[0130] 1) Dipping of the intermediate layer: PVDF-HFP was dissolved in a mixed solvent of N, N-dimethylformamide and acetone (the mass ratio of N, N-dimethylformamide and acetone was 7:3, and the mass ratio of solute to solvent was 1:3), and stirred at 60°C for 2h to obtain a colorless and transparent solution. BaTiO3 filler (the mass ratio of BaTiO3 to PVDF-HFP was 2:1) was added to the solution, and the mixture was stirred at a speed of 3000rpm for 10min to obtain a slurry for preparing the intermediate layer. The intermediate layer slurry was placed in the accommodating cavity of the first container, and the first container included a first through hole connected to the accommodating cavity, and the aperture of the first through hole was 0.26mm. The core silver-plated nylon yarn with a diameter of 85μm was passed through the first through hole and coated three times. The temperature of the drying zone was maintained at about 150°C. The speed of the fiber collection roller was controlled at 0.84m / min.

[0131] 2) Dip coating of shell layer: SBS was dissolved in toluene (the mass ratio of solute to solvent was 1:2), and then stirred at 3000 rpm for 20 min using a high-speed stirrer to obtain a colorless and transparent solution. 2+ Added to the solution (ZnS:Cu 2+ The mass ratio of 1% to SBS is 5:1), and the mixture is uniformly stirred at a speed of 3000 rpm for 10 minutes using a high-speed stirrer to obtain a shell slurry. The shell slurry is placed in the accommodating cavity of the second container, and the second container includes a second through hole connected to the accommodating cavity, and the aperture of the second through hole is 0.41 mm. The initial fiber obtained in 1) is coated twice through the second through hole. The temperature of the drying zone is maintained at about 150°C. The speed of the fiber collecting roller is controlled at 0.84 m / min.

[0132] Example 5

[0133] 1) Dipping of the intermediate layer: PVDF-HFP was dissolved in a mixed solvent of N, N-dimethylformamide and acetone (the mass ratio of the two solvents was 7:3, and the mass ratio of the solute to the solvent was 1:3), and stirred at 60°C for 2h to obtain a colorless and transparent solution. BaTiO3 filler (the mass ratio of BaTiO3 to PVDF-HFP was 2:1) was added to the solution, and the mixture was stirred at a speed of 3000rpm for 10min to obtain a slurry for preparing the intermediate layer. The intermediate layer slurry was placed in the accommodating cavity of the first container, and the first container included a first through hole connected to the accommodating cavity, and the aperture of the first through hole was 0.26mm. The core silver-plated nylon yarn with a diameter of 85μm was passed through the first through hole and coated three times. The temperature of the drying zone was maintained at about 150°C. The speed of the fiber collection roller was controlled at 0.84m / min.

[0134] 2) Dip coating of shell layer: SBS was dissolved in toluene (the mass ratio of solute to solvent was 1:2), and then stirred at 3000 rpm for 20 min using a high-speed stirrer to obtain a colorless and transparent solution. 2+ Added to the solution (ZnS:Cu 2+ The mass ratio of 1% to SBS is 5:1), and the mixture is uniformly stirred at a speed of 3000 rpm for 10 minutes using a high-speed stirrer to obtain a shell slurry. The shell slurry is placed in the accommodating cavity of the second container, and the second container includes a second through hole connected to the accommodating cavity, and the aperture of the second through hole is 0.51 mm. The initial fiber obtained in 1) is coated twice through the second through hole. The temperature of the drying zone is maintained at about 150°C. The speed of the fiber collecting roller is controlled at 0.84 m / min.

[0135] Example 6

[0136] 1) Dipping of the intermediate layer: PVDF-HFP was dissolved in a mixed solvent of N, N-dimethylformamide and acetone (the mass ratio of the two solvents was 7:3, and the mass ratio of the solute to the solvent was 1:3), and stirred at 60°C for 2h to obtain a colorless and transparent solution. BaTiO3 filler (the mass ratio of BaTiO3 to PVDF-HFP was 2:1) was added to the solution, and the mixture was stirred at a speed of 3000rpm for 10min to obtain a slurry for preparing the intermediate layer. The intermediate layer slurry was placed in the accommodating cavity of the first container, and the first container included a first through hole connected to the accommodating cavity, and the aperture of the first through hole was 0.26mm. The core silver-plated nylon yarn with a diameter of 85μm was passed through the first through hole and coated three times. The temperature of the drying zone was maintained at about 150°C. The speed of the fiber collection roller was controlled at 0.84m / min.

[0137] 2) Dip coating of shell layer: SBS was dissolved in toluene (the mass ratio of solute to solvent was 1:2), and then stirred at 3000 rpm for 20 min using a high-speed stirrer to obtain a colorless and transparent solution. 2+ Added to the solution (ZnS:Cu 2+ The mass ratio of 1% to SBS is 5:1), and the mixture is uniformly stirred at a speed of 3000 rpm for 10 minutes using a high-speed stirrer to obtain a shell slurry. The shell slurry is placed in the accommodating cavity of the second container, and the second container includes a second through hole connected to the accommodating cavity, and the aperture of the second through hole is 0.61 mm. The initial fiber obtained in 1) is coated twice through the second through hole. The temperature of the drying zone is maintained at about 150°C. The speed of the fiber collecting roller is controlled at 0.84 m / min.

[0138] Example 7

[0139] 1) Dipping of the intermediate layer: PVDF-HFP was dissolved in a mixed solvent of N, N-dimethylformamide and acetone (the mass ratio of the two solvents was 7:3, and the mass ratio of the solute to the solvent was 1:3), and stirred at 60°C for 2h to obtain a colorless and transparent solution. BaTiO3 filler (the mass ratio of BaTiO3 to PVDF-HFP was 2:1) was added to the solution, and the mixture was stirred at a speed of 3000rpm for 10min to obtain a slurry for preparing the intermediate layer. The intermediate layer slurry was placed in the accommodating cavity of the first container, and the first container included a first through hole connected to the accommodating cavity, and the aperture of the first through hole was 0.34mm. The core silver-plated nylon yarn with a diameter of 85μm was passed through the first through hole and coated three times. The temperature of the drying zone was maintained at about 150°C. The speed of the fiber collection roller was controlled at 0.84m / min.

[0140] 2) Dip coating of shell layer: SBS was dissolved in toluene (the mass ratio of solute to solvent was 1:2), and then stirred at 3000 rpm for 20 min using a high-speed stirrer to obtain a colorless and transparent solution. 2+ Added to the solution (ZnS:Cu 2+ The mass ratio of 1% to SBS is 5:1), and the mixture is uniformly stirred at a speed of 3000 rpm for 10 minutes using a high-speed stirrer to obtain a shell slurry. The shell slurry is placed in the accommodating cavity of the second container, and the second container includes a second through hole connected to the accommodating cavity, and the aperture of the second through hole is 0.41 mm. The initial fiber obtained in 1) is coated twice through the second through hole. The temperature of the drying zone is maintained at about 150°C. The speed of the fiber collecting roller is controlled at 0.84 m / min.

[0141] Example 8

[0142] 1) Dipping of the intermediate layer: PVDF-HFP was dissolved in a mixed solvent of N, N-dimethylformamide and acetone (the mass ratio of the two solvents was 7:3, and the mass ratio of the solute to the solvent was 1:3), and stirred at 60°C for 2h to obtain a colorless and transparent solution. BaTiO3 filler (the mass ratio of BaTiO3 to PVDF-HFP was 2:1) was added to the solution, and the mixture was stirred at a speed of 3000rpm for 10min to obtain a slurry for preparing the intermediate layer. The intermediate layer slurry was placed in the accommodating cavity of the first container, and the first container included a first through hole connected to the accommodating cavity, and the aperture of the first through hole was 0.34mm. The core silver-plated nylon yarn with a diameter of 85μm was passed through the first through hole and coated three times. The temperature of the drying zone was maintained at about 150°C. The speed of the fiber collection roller was controlled at 0.84m / min.

[0143] 2) Dip coating of shell layer: SBS was dissolved in toluene (the mass ratio of solute to solvent was 1:2), and then stirred at 3000 rpm for 20 min using a high-speed stirrer to obtain a colorless and transparent solution. 2+ Added to the solution (ZnS:Cu 2+ The mass ratio of 1% to SBS is 5:1), and the mixture is uniformly stirred at a speed of 3000 rpm for 10 minutes using a high-speed stirrer to obtain a shell slurry. The shell slurry is placed in the accommodating cavity of the second container, and the second container includes a second through hole connected to the accommodating cavity, and the aperture of the second through hole is 0.51 mm. The initial fiber obtained in 1) is coated twice through the second through hole. The temperature of the drying zone is maintained at about 150°C. The speed of the fiber collecting roller is controlled at 0.84 m / min.

[0144] Example 9

[0145] 1) Dipping of the intermediate layer: PVDF-HFP was dissolved in a mixed solvent of N, N-dimethylformamide and acetone (the mass ratio of the two solvents was 7:3, and the mass ratio of the solute to the solvent was 1:3), and stirred at 60°C for 2h to obtain a colorless and transparent solution. BaTiO3 filler (the mass ratio of BaTiO3 to PVDF-HFP was 2:1) was added to the solution, and the mixture was stirred at a speed of 3000rpm for 10min to obtain a slurry for preparing the intermediate layer. The intermediate layer slurry was placed in the accommodating cavity of the first container, and the first container included a first through hole connected to the accommodating cavity, and the aperture of the first through hole was 0.34mm. The core silver-plated nylon yarn with a diameter of 85μm was passed through the first through hole and coated three times. The temperature of the drying zone was maintained at about 150°C. The speed of the fiber collection roller was controlled at 0.84m / min.

[0146] 2) Dip coating of shell layer: SBS was dissolved in toluene (the mass ratio of solute to solvent was 1:2), and then stirred at 3000 rpm for 20 min using a high-speed stirrer to obtain a colorless and transparent solution. 2+ Added to the solution (ZnS:Cu 2+ The mass ratio of 1% to SBS is 5:1), and the mixture is uniformly stirred at a speed of 3000 rpm for 10 minutes using a high-speed stirrer to obtain a shell slurry. The shell slurry is placed in the accommodating cavity of the second container, and the second container includes a second through hole connected to the accommodating cavity, and the aperture of the second through hole is 0.61 mm. The initial fiber obtained in 1) is coated twice through the second through hole. The temperature of the drying zone is maintained at about 150°C. The speed of the fiber collecting roller is controlled at 0.84 m / min.

[0147] Example 10

[0148] 1) Dipping of the intermediate layer: PVDF-HFP was dissolved in a mixed solvent of N, N-dimethylformamide and acetone (the mass ratio of the two solvents was 7:3, and the mass ratio of the solute to the solvent was 1:3), and stirred at 60°C for 2h to obtain a colorless and transparent solution. BaTiO3 filler was added to the solution (the mass ratio of BaTiO3 to PVDF-HFP was 2:1), and the mixture was stirred at a speed of 3000rpm for 10min to obtain a slurry for preparing the intermediate layer. The intermediate layer slurry was placed in the accommodating cavity of the first container, and the first container included a first through hole connected to the accommodating cavity, and the aperture of the first through hole was 0.41mm. The core silver-plated nylon yarn with a diameter of 85μm was passed through the first through hole and coated three times. The temperature of the drying zone was maintained at about 150°C. The speed of the fiber collection roller was controlled at 0.84m / min.

[0149] 2) Dip coating of shell layer: SBS was dissolved in toluene (the mass ratio of solute to solvent was 1:2), and then stirred at 3000 rpm for 20 min using a high-speed stirrer to obtain a colorless and transparent solution. 2+ Added to the solution (ZnS:Cu 2+ The mass ratio of 1% to SBS is 5:1), and the mixture is uniformly stirred at a speed of 3000 rpm for 10 minutes using a high-speed stirrer to obtain a shell slurry. The shell slurry is placed in the accommodating cavity of the second container, and the second container includes a second through hole connected to the accommodating cavity, and the aperture of the second through hole is 0.51 mm. The second through hole of the initial fiber obtained in 1) passes through the coating twice. The temperature of the drying zone is maintained at about 150°C. The speed of the fiber collecting roller is controlled at 0.84 m / min.

[0150] Embodiment 11

[0151] 1) Dipping of the intermediate layer: PVDF-HFP was dissolved in a mixed solvent of N, N-dimethylformamide and acetone (the mass ratio of the two solvents was 7:3, and the mass ratio of the solute to the solvent was 1:3), and stirred at 60°C for 2h to obtain a colorless and transparent solution. BaTiO3 filler was added to the solution (the mass ratio of BaTiO3 to PVDF-HFP was 2:1), and the mixture was stirred at a speed of 3000rpm for 10min to obtain a slurry for preparing the intermediate layer. The intermediate layer slurry was placed in the accommodating cavity of the first container, and the first container included a first through hole connected to the accommodating cavity, and the aperture of the first through hole was 0.41mm. The core silver-plated nylon yarn with a diameter of 85μm was passed through the first through hole and coated three times. The temperature of the drying zone was maintained at about 150°C. The speed of the fiber collection roller was controlled at 0.84m / min.

[0152] 2) Dip coating of shell layer: SBS was dissolved in toluene (the mass ratio of solute to solvent was 1:2), and then stirred at 3000 rpm for 20 min using a high-speed stirrer to obtain a colorless and transparent solution. 2+ Added to the solution (ZnS:Cu 2+ The mass ratio of 1% to SBS is 5:1), and the mixture is uniformly stirred at a speed of 3000 rpm for 10 minutes using a high-speed stirrer to obtain a shell slurry. The shell slurry is placed in the accommodating cavity of the second container, and the second container includes a second through hole connected to the accommodating cavity, and the aperture of the second through hole is 0.61 mm. The initial fiber obtained in 1) is coated twice through the second through hole. The temperature of the drying zone is maintained at about 150°C. The speed of the fiber collecting roller is controlled at 0.84 m / min.

[0153] Example 12

[0154] 1) Dipping of the intermediate layer: PVDF-HFP was dissolved in a mixed solvent of N, N-dimethylformamide and acetone (the mass ratio of the two solvents was 7:3, and the mass ratio of the solute to the solvent was 1:3), and stirred at 60°C for 2h to obtain a colorless and transparent solution. BaTiO3 filler (the mass ratio of BaTiO3 to PVDF-HFP was 2:1) was added to the solution, and the mixture was stirred at a speed of 3000rpm for 10min to obtain a slurry for preparing the intermediate layer. The intermediate layer slurry was placed in the accommodating cavity of the first container, and the first container included a first through hole connected to the accommodating cavity, and the aperture of the first through hole was 0.26mm. The core silver-plated nylon yarn with a diameter of 85μm was passed through the first through hole and coated three times. The temperature of the drying zone was maintained at about 150°C. The speed of the fiber collection roller was controlled at 0.84m / min.

[0155] 2) Dip coating of shell layer: SBS was dissolved in toluene (the mass ratio of solute to solvent was 1:2), and then stirred at 3000 rpm for 20 min using a high-speed stirrer to obtain a colorless and transparent solution. 2+ Added to the solution (ZnS:Cu 2+ The mass ratio of 1% to SBS is 5:1), and the mixture is uniformly stirred at a speed of 3000 rpm for 10 minutes using a high-speed stirrer to obtain a shell slurry. The shell slurry is placed in the accommodating cavity of the second container, and the second container includes a second through hole connected to the accommodating cavity, and the aperture of the second through hole is 0.41 mm. The initial fiber obtained in 1) is coated twice through the second through hole. The temperature of the drying zone is maintained at about 150°C. The speed of the fiber collecting roller is controlled at 0.84 m / min.

[0156] 3) Dipping of transparent conductive layer: Place silver nanowire / ethanol dispersion with a diameter of 30 nm into the receiving cavity of the third container, the third container includes a third through hole connected to the receiving cavity, and the aperture of the third through hole is 0.41 mm. Pass the fiber obtained in 2) through the third through hole for coating twice. The temperature of the drying zone is maintained at about 150°C. The speed of the fiber collection roller is controlled at 0.84 m / min.

[0157] The fibers prepared in Examples 1 to 12 or the fabrics further prepared therefrom were subjected to relevant performance tests, wherein the test conditions or test standards for each performance test item are as follows.

[0158] (1) The fiber luminescence brightness was tested by an absolute external quantum efficiency measurement system (Hamamatsu C9920-12) equipped with a Hamamatsu PMA-12 photoelectric multi-channel analyzer (C10027-02). The fiber voltage was an AC voltage (250 V, 20 kHz).

[0159] (2) The dielectric constant of the intermediate layer material was tested by an impedance analyzer (Agilent 4294A).

[0160] Figure 3 The fiber luminescence brightness test results of Examples 1-11 are shown in FIG. Among them, Examples 1, 2, and 3 prepare initial fibers through a first through hole with an aperture of 0.21 mm, and the corresponding initial fiber diameter is 158 μm; Examples 4, 5, and 6 prepare initial fibers through a first through hole with an aperture of 0.26 mm, and the corresponding initial fiber diameter is 205 μm; Examples 7, 8, and 9 prepare initial fibers through a first through hole with an aperture of 0.34 mm, and the corresponding initial fiber diameter is 264 μm; Examples 10 and 11 prepare initial fibers through a first through hole with an aperture of 0.41 mm, and the corresponding initial fiber diameter is 320 μm. In Examples 1, 4, and 7, fibers were prepared through a second through hole with a pore size of 0.41 mm, and the corresponding fiber diameter was 3.27 mm; in Examples 2, 5, 8, and 10, fibers were prepared through a second through hole with a pore size of 0.51 mm, and the corresponding fiber diameter was 4.29 mm; in Examples 3, 6, 9, and 11, fibers were prepared through a second through hole with a pore size of 0.61 mm, and the corresponding fiber diameter was 5.14 mm.

[0161] according to Figure 3 From the luminous brightness of the fibers in Examples 1-11, it can be seen that when the core material diameter is the same, the thinner the middle layer and the smaller the fiber diameter, the higher the luminous brightness of the fiber.

[0162] Figure 4 The dielectric constant test results of the components of the middle layer and the shell layer used in the fibers of Examples 1-12. Figure 4 The test results show that polyvinylidene fluoride hexafluoropropylene has a higher dielectric constant than polystyrene-butadiene-styrene copolymer and is more suitable as a dielectric layer material. In addition, barium titanate has a higher relative dielectric constant and is beneficial to further enhance the dielectric constant of the intermediate layer as a filler.

[0163] Figure 5 This is the luminous mode test diagram of Example 1. Figure 5 As shown, the fiber of Example 1 can emit light in a point light-emitting mode after contacting the human body when the power is turned on. Similar to Example 1, the fibers of Examples 2-11 can also emit light in a point light-emitting mode after contacting the human body when the power is turned on.

[0164] Figure 6 This is a test diagram of the luminous mode of Example 12. Figure 6 As shown, the fiber of Example 12 can emit light in a linear light-emitting mode after coming into contact with the human body when powered on.

[0165] Figure 74 is a graph showing the results of the fiber tensile fracture test of Example 4. Figure 7 As shown, the mechanical properties of the fiber in Example 4 are excellent and can meet the mechanical property requirements for fabric preparation.

[0166] Figure 8 The fiber product is obtained by embroidering a customized pattern using the fiber in Example 4.

[0167] Fig. 9 The present invention is a fabric woven from the fibers in Example 4.

[0168] Fig.10 To use Fig. 9 The schematic diagram of the fabric to achieve touch motion tracking is shown in FIG. Fig.10 As shown, when the fingertips are not wet, the back of the fabric can be touched by a human hand to achieve multi-point display motion tracking. When the fingertips are wet, the luminous area of ​​the fabric is enlarged, and the front side of the fabric can also be touched by a human hand to achieve motion tracking.

[0169] Fig.11 Schematic diagrams of realizing selective display of patterns using the patterns embroidered with fibers in Examples 4 (with water on the fingertips) and 12 (without water on the fingertips).

[0170] Fig.12 This is a schematic diagram of realizing touch information display using the pattern obtained by fiber embroidery in Example 12 (no water on the fingertips).

[0171] Based on the test results of Examples 1-12, it can be seen that the fiber of the present application can achieve touch luminescence, and the fiber products made therefrom can achieve motion tracking, information display or touch luminescence functions, and have better wearing comfort.

[0172] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A fiber, characterized in that It comprises a core material, an intermediate layer and a shell layer, wherein the intermediate layer is coated on the surface of the core material, and the shell layer is coated on the surface of the intermediate layer away from the core material; Wherein, the core material comprises a conductive material; The intermediate layer includes a dielectric material, and the dielectric material includes at least one of barium titanate, aluminum oxide, titanium dioxide, silicon dioxide, barium sulfate, magnesium oxide, hexagonal boron nitride, silicon nitride, zinc oxide, and calcium carbonate; The shell layer includes an electroluminescent material.

2. The fiber according to claim 1, characterized in that The core material includes at least one of conductive silver nylon yarn, copper wire and steel wire yarn.

3. The fiber according to claim 1, characterized in that The middle layer further comprises a first polymer matrix, the first polymer matrix comprising at least one of styrene-butadiene-styrene block copolymer, hydrogenated styrene-butadiene-styrene block copolymer, polyvinylidene fluoride, polyvinylidene fluoride hexafluoropropylene copolymer, polyvinylidene fluoride trifluoroethylene copolymer; Optionally, the mass ratio of the dielectric material to the first polymer matrix is ​​1:1 to 5:

1.

4. The fiber according to claim 1, characterized in that The shell layer further comprises a second polymer matrix, the second polymer matrix comprising at least one of styrene-butadiene-styrene block copolymer, hydrogenated styrene-butadiene-styrene block copolymer, polyvinylidene fluoride, polyvinylidene fluoride hexafluoropropylene copolymer, and polyvinylidene fluoride trifluoroethylene copolymer; The electroluminescent material includes zinc sulfide doped with copper ions and / or zinc sulfide doped with copper and manganese ions.

5. The fiber according to claim 1, characterized in that The diameter of the fiber is 300 μm to 700 μm; Wherein, the diameter of the core material is 30 μm to 100 μm; The thickness of the intermediate layer is 30 μm to 100 μm; The thickness of the shell layer is 30 μm to 200 μm.

6. The fiber according to any one of claims 1 to 5, characterized in that The fiber further comprises a transparent conductive layer, wherein the transparent conductive layer is coated on a surface of the shell layer away from the middle layer; Optionally, the transparent conductive layer comprises silver nanowires and / or poly(3,4-ethylenedioxythiophene)-poly(styrene sulfonic acid).

7. A method for preparing a fiber as claimed in any one of claims 1 to 6, characterized in that include: Provide core materials; forming the intermediate layer on the surface of the core material to obtain initial fibers; The shell layer is formed on the surface of the initial fiber to obtain the fiber.

8. The method according to claim 7, characterized in that The step of forming the intermediate layer on the surface of the core material to obtain the initial fiber comprises: Providing an intermediate layer slurry, the intermediate layer slurry comprising a first polymer matrix, a dielectric material and a first organic solvent, wherein, based on the total mass of the intermediate layer slurry, the mass percentage of the first polymer matrix is ​​15% to 40%, the mass ratio of the dielectric material to the first polymer matrix is ​​1:1 to 5:1, and optionally, the first organic solvent comprises at least one of N,N-dimethylformamide, acetone, formic acid, hexafluoroisopropanol and acetonitrile; The intermediate layer slurry is placed in a first containing cavity of a first container, wherein the first container has at least one first through hole connected to the first containing cavity, and the aperture of the first through hole is 0.21 mm to 0.41 mm; The intermediate layer slurry is coated, including passing the core material through the first through hole at a speed of 0.5 m / min to 2 m / min for a preset number of times and drying, thereby forming the intermediate layer on the surface of the core material to obtain the initial fiber.

9. The method according to claim 8, characterized in that The step of forming the shell layer on the surface of the initial fiber to obtain the fiber comprises: Providing a shell layer slurry, the shell layer slurry comprising a second polymer matrix, an electroluminescent material and a second organic solvent, wherein, based on the total mass of the shell layer slurry, the mass percentage of the second polymer matrix is ​​30% to 60%, the mass ratio of the electroluminescent material to the second polymer matrix is ​​1:1 to 5:1, and optionally, the second organic solvent comprises at least one of toluene, N,N-dimethylformamide, acetone, formic acid, hexafluoroisopropanol and acetonitrile; The shell layer slurry is placed in a second containing cavity of a second container, wherein the second container has at least one second through hole connected to the second containing cavity, and the aperture of the second through hole is 0.3 mm to 0.61 mm; The shell layer slurry is coated, comprising passing the initial fiber through the second through hole at a speed of 0.5 m / min to 2 m / min for a preset number of times and drying, thereby forming the shell layer on the surface of the initial fiber to obtain the fiber.

10. The method according to claim 7, characterized in that After forming the shell layer on the surface of the intermediate layer, the method further comprises: A transparent conductive layer is formed on the surface of the shell layer.

11. The method according to claim 10, characterized in that The step of forming a transparent conductive layer on the surface of the shell layer comprises: Providing a dispersion of a transparent conductive layer material; The dispersion is placed in a third containing cavity of a third container, wherein the third container has at least one third through hole connected to the third containing cavity, and the aperture of the third through hole is 0.3 mm to 0.61 mm; The dispersion liquid is applied, including passing the fiber through the third through hole at a speed of 0.5 m / min to 2 m / min for a preset number of times and drying the fiber, thereby forming the transparent conductive layer on the surface of the fiber.

12. A fiber product comprising the fiber according to any one of claims 1 to 6, or a fiber prepared by the method according to any one of claims 7 to 11; Optionally, the fiber product is a fabric.

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