CN115247291A - Electroluminescent fiber and preparation method and application thereof - Google Patents
Electroluminescent fiber and preparation method and application thereof Download PDFInfo
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- CN115247291A CN115247291A CN202111079174.8A CN202111079174A CN115247291A CN 115247291 A CN115247291 A CN 115247291A CN 202111079174 A CN202111079174 A CN 202111079174A CN 115247291 A CN115247291 A CN 115247291A
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/16—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one other macromolecular compound obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds as constituent
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
- C09K11/025—Use of particular materials as binders, particle coatings or suspension media therefor non-luminescent particle coatings or suspension media
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/58—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing copper, silver or gold
- C09K11/582—Chalcogenides
- C09K11/584—Chalcogenides with zinc or cadmium
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/64—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing aluminium
- C09K11/641—Chalcogenides
- C09K11/642—Chalcogenides with zinc or cadmium
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
- D01D5/34—Core-skin structure; Spinnerette packs therefor
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/08—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyacrylonitrile as constituent
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/10—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one other macromolecular compound obtained by reactions only involving carbon-to-carbon unsaturated bonds as constituent
Abstract
The invention provides an electroluminescent fiber and a preparation method and application thereof, belonging to the technical field of intelligent electronic devices. The electroluminescent fiber provided by the invention comprises a conductive fiber core and an electroluminescent layer coated outside the conductive fiber core, wherein the electroluminescent layer comprises a fiber-forming polymer and electroluminescent powder dispersed in the fiber-forming polymer. The electroluminescent fiber provided by the invention only has one conductive fiber core as a core electrode, and the outer layer of the core electrode is coated with an electroluminescent layer formed by fiber polymer and electroluminescent powder, has a simple structure, and can realize luminescence by combining weaving processes such as weaving, knitting, weaving and the like, such as a luminescent fishing net and a luminescent braided fabric; the electroluminescent fiber can also be used together with other electrodes to realize luminescence, for example, the luminescent fiber and the transparent conductive fiber are used for preparing a touch-sensitive fabric display through a weaving process, and the application environment of the electroluminescent fiber is greatly expanded.
Description
Technical Field
The invention relates to the technical field of intelligent electronic devices, in particular to an electroluminescent fiber and a preparation method and application thereof.
Background
With the advancement of technology and the increasing pursuit of life, luminescent materials are now no longer used only for simple flat panel display and solid state lighting technologies, but also applied to the field of smart wearing. The development of the wearable electroluminescent material meets the requirement of people on the novelty of textiles, caters to the pursuit of people on fashion, is applied to a stage, and can bring shocking visual impact force without light matching. On the other hand, the functional utility of electroluminescent fibers in wearable applications is a major concern. For example, the reflective warning clothes are suitable for warning clothes on road safety, the defect that common reflective warning clothes only can play a warning role under the irradiation of lamplight is overcome, the light penetration is strong, the reflective warning clothes are more suitable for night and foggy weather, and powerful guarantee is provided for road security and personal safety.
Currently, in order to obtain smart electroluminescent textiles, researchers typically attach the electroluminescent material in a stack on a flat film or fabric. However, although this method can achieve excellent light emitting effects of the film or fabric, the electroluminescent layer reduces excellent properties of flexibility, air permeability, flexibility, etc., inherent to the textile.
Fiber-based electroluminescent devices have better flexibility, comfort, breathability and robustness. However, the conventional electroluminescent device is composed of two electrodes and a light-emitting layer between the electrodes, and the structural schematic diagram is shown in fig. 1, so that the conventional electroluminescent device is difficult to weave with other fabrics at the same time, and the application of the conventional electroluminescent device in the wearable field is limited.
Disclosure of Invention
In view of the above, the present invention aims to provide an electroluminescent fiber, and a preparation method and an application thereof. The electroluminescent fiber provided by the invention has a simple structure and can be simultaneously woven with other fabrics.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides an electroluminescent fiber, which comprises a conductive fiber core and an electroluminescent layer coated outside the conductive fiber core, wherein the electroluminescent layer comprises a fiber-forming polymer and electroluminescent powder dispersed in the fiber-forming polymer.
Preferably, the conductive fiber core is one or more of a metal wire, a conductive carbon material fiber and a conductive composite material fiber;
the fiber-forming polymer is one or more of polyurethane, polyvinylidene fluoride, polyvinyl alcohol and polyacrylonitrile.
Preferably, the electroluminescent powder is zinc sulfide powder doped with doping elements; the doping element is one or more of Cu, al, mn, cl, ag and Cd.
Preferably, the electroluminescent layer contains 25 to 75 mass% of electroluminescent powder.
Preferably, the diameter of the conductive fiber core is 0.2-0.6 mm, and the thickness of the electroluminescent layer is 0.1-0.5 mm.
The invention provides a preparation method of the electroluminescent fiber, which comprises the following steps:
(1) Mixing electroluminescent powder, fiber-forming polymer and polar solvent to obtain electroluminescent spinning solution;
(2) And carrying out coaxial wet spinning on the conductive fiber and the electroluminescent spinning solution, wherein the conductive fiber is positioned at the inner layer, and the electroluminescent spinning solution is positioned at the outer layer, so as to obtain the electroluminescent fiber.
Preferably, the polar solvent is one or more of N, N '-dimethylformamide, N' -dimethylacetamide, dimethyl sulfoxide, tetrahydrofuran and water.
Preferably, the drawing speed of the conductive fiber in the coaxial wet spinning is 10-500 cm-min -1 The extrusion rate of the electroluminescent spinning solution is 1-60 mL min -1 。
The invention provides application of the electroluminescent fiber in luminescent textiles or intelligent luminescent fabrics.
Preferably, the luminescent textile is an electroluminescent fishing net; the intelligent luminous fabric is a fabric touch display screen.
The invention provides an electroluminescent fiber, which comprises a conductive fiber core and an electroluminescent layer coated outside the conductive fiber core, wherein the electroluminescent layer comprises a fiber-forming polymer and electroluminescent powder dispersed in the fiber-forming polymer. The electroluminescent fiber provided by the invention only has one conductive fiber core as a core electrode, the outer layer of the core electrode is coated with an electroluminescent layer formed by fiber polymer and electroluminescent powder, the structure is simple, and the electroluminescent fiber can be combined with the electroluminescent layer by textile processes such as weaving, knitting, weaving and the like to realize luminescence, such as a luminescent fishing net and a luminescent braided fabric; the electroluminescent fiber can also be used together with other electrodes to realize luminescence, for example, the luminescent fiber and the transparent conductive fiber are used for preparing a touch-sensitive fabric display through a weaving process, and the application environment of the electroluminescent fiber is greatly expanded.
Drawings
FIG. 1 is a schematic diagram of a conventional electroluminescent device;
FIG. 2 is a pictorial view of a coaxial spinneret;
FIG. 3 is a diagram of a luminescent substance of an electroluminescent fiber obtained in example 1;
FIG. 4 is a light-emitting object diagram of the light-emitting fishing net obtained in example 2;
fig. 5 is a schematic structural view of the fabric touch display screen obtained in example 3.
Detailed Description
The invention provides an electroluminescent fiber, which comprises a conductive fiber core and an electroluminescent layer coated outside the conductive fiber core, wherein the electroluminescent layer comprises a fiber-forming polymer and electroluminescent powder dispersed in the fiber-forming polymer.
In the invention, the conductive fiber core is preferably one or more of a metal wire, a conductive carbon material fiber and a conductive composite material fiber. In the invention, the material of the metal wire is preferably one or more of copper wire, iron wire, gold wire, silver wire, stainless steel wire and nickel wire. In the present invention, the conductive composite fibers are preferably metallized yarns and/or metal filled polymer fibers.
In the present invention, the conductivity of the conductive fiber core is preferably 1 to 1 × 10 6 S/cm。
In the present invention, the diameter of the conductive fiber core is preferably 0.2 to 0.6mm, more preferably 0.3 to 0.5mm.
In the invention, the fiber-forming polymer is one or more of polyurethane, polyvinylidene fluoride, polyvinyl alcohol and polyacrylonitrile. In the present invention, the number average molecular weight of the fiber-forming polymer is preferably 1X 10 4 ～1×10 6 More preferably 1X 10 5 。
In the present invention, the electroluminescent powder is preferably zinc sulfide powder doped with a doping element; the doping element is preferably one or more of Cu, al, mn, cl, ag and Cd. In the present invention, the doping amount of the doping element in the zinc sulfide powder is preferably 0.001 to 4wt%, more preferably 0.01 to 1wt%, and still more preferably 0.1 to 0.5wt%. In the present invention, the particle size of the electroluminescent powder is preferably 5 to 50 μm, more preferably 20 to 40 μm. In the present invention, the difference in the kind of the electroluminescent powder makes the electroluminescent fibers emit light of different colors.
In the present invention, the mass content of the electroluminescent powder in the fiber-forming polymer layer is preferably 25 to 75%, more preferably 30 to 50%.
In the present invention, the thickness of the electroluminescent layer is preferably 0.1 to 0.5mm, more preferably 0.2 to 0.4mm.
The electroluminescent fiber provided by the invention only has one conductive fiber core as a core electrode, the outer layer of the core electrode is coated with an electroluminescent layer formed by fiber polymer and electroluminescent powder, the structure is simple, and the electroluminescent fiber can be combined with the electroluminescent layer by textile processes such as weaving, knitting, weaving and the like to realize luminescence, such as a luminescent fishing net and a luminescent braided fabric; the electroluminescent fiber can also be used together with other electrodes to realize luminescence, for example, the luminescent fiber and the transparent conductive fiber are used for preparing a touch-sensitive fabric display through a weaving process, and the application environment of the electroluminescent fiber is greatly expanded.
The invention provides a preparation method of the electroluminescent fiber, which comprises the following steps:
(1) Mixing electroluminescent powder, fiber-forming polymer and polar solvent to obtain electroluminescent spinning solution;
(2) And carrying out coaxial wet spinning on the conductive fiber and the electroluminescent spinning solution, wherein the conductive fiber is positioned at the inner layer, and the electroluminescent spinning solution is positioned at the outer layer, so as to obtain the electroluminescent fiber.
The invention mixes the electroluminescent powder, the fiber-forming polymer and the polar solvent to obtain the electroluminescent spinning dope. In the present invention, the polar solvent is preferably one or more of N, N '-dimethylformamide, N' -dimethylacetamide, dimethylsulfoxide, tetrahydrofuran and water.
In the present invention, the mass ratio of the electroluminescent powder, the fiber-forming polymer and the polar solvent is preferably (0.25 to 37.5): (0.25-37.5): (50 to 99), more preferably (5 to 20): (5-20): (60-85). The invention does not require any particular mixing means, such as stirring, known to the person skilled in the art. After the mixing is completed, the present invention preferably performs a standing process on the obtained electroluminescent spinning dope to remove air bubbles in the electroluminescent spinning dope.
After the electroluminescent spinning solution is obtained, the invention carries out coaxial wet spinning on conductive fiber and the electroluminescent spinning solution, wherein the conductive fiber is positioned at the inner layer, and the electroluminescent spinning solution is positioned at the outer layer, thus obtaining the electroluminescent fiber. In the invention, the coaxial spinning head used for the coaxial wet spinning comprises an inner pipe and an outer pipe which are coaxially nested, and the object diagram is shown in figure 2. In the present invention, the inner diameter of the inner tube is preferably 0.2 to 0.6mm, more preferably 0.3 to 0.5mm, and the outer diameter of the inner tube is preferably 0.3 to 0.9mm, more preferably 0.5 to 0.8mm. In the present invention, the outer tube preferably has an inner diameter of 0.4 to 2mm, more preferably 0.8 to 1.5mm, and an outer diameter of 0.5 to 2.5mm, more preferably 1 to 2mm.
In the invention, the coaxial wet spinning specifically comprises the following steps: and drawing the conductive fiber from the inner tube of the coaxial spinning head into a coagulating bath, and extruding the electroluminescent spinning solution from the outer tube of the coaxial spinning head onto the outer surface of the conductive fiber while drawing. In the present invention, the coagulation bath is preferably distilled water.
In the present invention, the drawing rate of the conductive fiber at the time of the coaxial wet spinning is preferably 10 to 500cm · min -1 More preferably 50 to 400 cm.min -1 More preferably 100 to 300 cm.min -1 (ii) a The extrusion rate of the electroluminescent spinning solution during the coaxial wet spinning is preferably 1-60 mL min -1 More preferably 5 to 50mL min -1 More preferably 10 to 35mL min -1 。
After the coaxial wet spinning, the obtained electroluminescent fiber is preferably washed and dried in sequence. In the present invention, the washing preferably includes water washing and ethanol washing performed in this order. In the present invention, the temperature for the drying is preferably 60 to 100 ℃, more preferably 70 to 80 ℃. The invention has no special requirement on the drying time, and the constant weight of the electroluminescent fiber is ensured.
The invention provides application of the electroluminescent fiber in luminescent textiles or intelligent luminescent fabrics.
In the present invention, the luminescent textile is preferably an electroluminescent fishing net; the intelligent luminous fabric is a fabric touch display screen.
In the present invention, the electroluminescent fishing net is preferably prepared by a knot method, a winching method and a warp knitting method. In the invention, one fishing net buckle of the electroluminescent fishing net is composed of two electroluminescent fibers, and two adjacent electroluminescent fibers are connected with different electrodes of an alternating current power supply.
In the invention, the fabric touch display screen is preferably prepared by taking the electroluminescent fibers and the traditional textile yarns as warp yarns alternately and taking the elastic transparent conductive fibers and the traditional textile yarns as weft yarns alternately through a weaving process. In the invention, the elastic transparent fiber is preferably one or more of ionic hydrogel conductive fiber, ionic gel fiber and conductive polymer fiber, and the conventional textile yarn is preferably one or more of cotton yarn, wool yarn, hemp yarn, silk yarn and blended yarn.
In the invention, the fabric touch display screen forms a light-emitting unit by crossing electroluminescent fibers and elastic transparent conductive fibers. The light-emitting units on the fabric touch display screen simultaneously form a capacitance pressure sensing array, and the capacitance change signals of the sensing array are input to the rear end under the action of external pressure and are fed back and displayed on the fabric touch display screen in real time.
The following examples are provided to illustrate the electroluminescent fibers of the present invention and their preparation and use, but they should not be construed as limiting the scope of the present invention.
Example 1
The preparation method of the electroluminescent fiber comprises the following specific steps:
(1) Preparing a spinning solution: diluting water-cured polyurethane by using an organic solvent N, N-Dimethylformamide (DMF) according to a mass ratio of 1.
(2) Coaxial wet spinning: injecting electroluminescent spinning solution into 20mL syringe, immersing coaxial spinning head in coagulating bath distilled water, and connecting syringe needle with plastic conduitThe outer ring of the coaxial spinning head is controlled by an injection pump to ensure that the extrusion speed of the spinning dope is 1mL min -1 (ii) a 100D silver plated yarn at 270cm min -1 The drawing speed of the spinning head passes through a core layer of a coaxial spinning head, and the electroluminescent spinning solution is uniformly solidified on the surface of the silver-plated yarn through a coagulating bath to obtain the electroluminescent fiber. After washing with distilled water and alcohol, drying at 100 deg.C and collecting on bobbin. The inner diameter of the inner tube of the coaxial spinning head is 0.34mm, and the outer diameter of the inner tube of the coaxial spinning head is 0.63mm; the outer tube had an inner diameter of 1.12mm and an outer diameter of 1.48mm.
Example 2
The preparation method of the electroluminescent fiber comprises the following specific steps:
(1) Preparing a spinning solution: diluting polyvinyl alcohol (PVA) by using an organic solvent N, N-Dimethylformamide (DMF) according to a mass ratio of 1.
(2) Coaxial wet spinning: injecting electroluminescent spinning solution into 20mL injector, immersing coaxial spinning head in coagulating bath distilled water, connecting injector needle with coaxial spinning head outer ring through plastic conduit, and controlling spinning solution extrusion speed to 1.3mL min with injection pump -1 (ii) a Copper wire with diameter of 0.3mm for 280cm min -1 The drawing speed of the spinning head passes through a core layer of a coaxial spinning head, and the electroluminescent spinning solution is uniformly solidified on the surface of the copper wire through a coagulating bath to obtain the electroluminescent fiber. After washing with distilled water and alcohol, dried at 70 ℃ and collected on a bobbin. The inner diameter of the inner tube of the coaxial spinning head is 0.34mm, and the outer diameter of the inner tube of the coaxial spinning head is 0.63mm; the outer tube had an inner diameter of 1.12mm and an outer diameter of 1.48mm.
Example 3
The preparation method of the electroluminescent fiber comprises the following specific steps:
(1) Preparing a spinning solution: diluting polyvinylidene fluoride (PVDF) by using an organic solvent N, N-Dimethylformamide (DMF) according to a mass ratio of 10.
(2) Coaxial wet spinning: injecting electroluminescent spinning solution into 20mL injector, immersing coaxial spinning head in coagulating bath distilled water, connecting injector needle with coaxial spinning head outer ring through plastic conduit, and controlling spinning solution extrusion speed to 0.8mL min by using injection pump -1 (ii) a Carbon fiber with diameter of 0.3mm for 200cm min -1 The drawing speed of the spinning head passes through a core layer of a coaxial spinning head, and the electroluminescent spinning solution is uniformly solidified on the surface of the carbon fiber through a coagulating bath to obtain the electroluminescent fiber. After washing with distilled water and alcohol, dried at 70 ℃ and collected on a bobbin. The inner diameter of the inner tube of the coaxial spinning head is 0.34mm, and the outer diameter of the inner tube of the coaxial spinning head is 0.63mm; the outer tube had an inner diameter of 1.12mm and an outer diameter of 1.48mm.
Performance testing
Twisting the electroluminescent fibers obtained in examples 1 to 3, wherein the power supply is an alternating current power supply, after twisting two electroluminescent fibers, removing the light-emitting coating at one end of each of the two electroluminescent fibers, exposing the conductive fibers with a length enough to be clamped by the clips of the alternating current power supply, clamping the two conductive fibers by the clips of the two electrodes of the alternating current power supply, electrifying and emitting light, and the light-emitting real object of the electroluminescent fibers obtained in examples 1 to 3 is shown in fig. 3. In fig. 3, a is a light-emitting entity diagram of the electroluminescent fiber obtained in example 1, b is a light-emitting entity diagram of the electroluminescent fiber obtained in example 2, and c is a light-emitting entity diagram of the electroluminescent fiber obtained in example 3. As can be seen from FIG. 3, the electroluminescent fiber provided by the present invention has good electroluminescent effect.
The electroluminescent fibers obtained in example 2 are made into a luminous fishing net by a warp knitting method, two adjacent electroluminescent fibers of the luminous fishing net are connected with different electrodes of an alternating current power supply, and a luminous real object figure is shown in 4.
The fabric touch display screen is prepared by using the electroluminescent fibers and the traditional textile yarns obtained in the embodiment 3 as warp yarns alternately and using the elastic transparent conductive fibers and the traditional textile yarns as weft yarns alternately through a weaving process, the electroluminescent fibers and the elastic transparent conductive fibers are respectively connected with two electrodes of a power supply, and the structural schematic diagram of the obtained fabric touch display screen is shown in fig. 5.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and amendments can be made without departing from the principle of the present invention, and these modifications and amendments should also be considered as the protection scope of the present invention.
Claims (10)
1. An electroluminescent fiber comprises a conductive fiber core and an electroluminescent layer coated outside the conductive fiber core, wherein the electroluminescent layer comprises a fiber-forming polymer and electroluminescent powder dispersed inside the fiber-forming polymer.
2. The electroluminescent fiber of claim 1, wherein the conductive fiber core is one or more of a metal wire, a conductive carbon material fiber and a conductive composite material fiber;
the fiber-forming polymer is one or more of polyurethane, polyvinylidene fluoride, polyvinyl alcohol and polyacrylonitrile.
3. The electroluminescent fiber of claim 1, wherein the electroluminescent powder is zinc sulfide powder doped with a doping element; the doping element is one or more of Cu, al, mn, cl, ag and Cd.
4. The electroluminescent fiber according to claim 1 or 3, wherein the electroluminescent layer contains 25 to 75% by mass of the electroluminescent powder.
5. Electroluminescent fiber according to claim 1, characterized in that the diameter of the conductive fiber core is 0.2 to 0.6mm and the thickness of the electroluminescent layer is 0.1 to 0.5mm.
6. A method for preparing an electroluminescent fiber as claimed in any one of claims 1 to 5, characterized by comprising the steps of:
(1) Mixing electroluminescent powder, fiber-forming polymer and polar solvent to obtain electroluminescent spinning solution;
(2) And carrying out coaxial wet spinning on the conductive fiber and the electroluminescent spinning solution, wherein the conductive fiber is positioned at the inner layer, and the electroluminescent spinning solution is positioned at the outer layer to obtain the electroluminescent fiber.
7. The method according to claim 6, wherein the polar solvent is one or more selected from the group consisting of N, N '-dimethylformamide, N' -dimethylacetamide, dimethylsulfoxide, tetrahydrofuran and water.
8. The method according to claim 6, wherein the drawing rate of the electrically conductive fiber in the coaxial wet spinning is 10 to 500 cm-min -1 The extrusion rate of the electroluminescent spinning dope is 1-60 mLmin -1 。
9. Use of the electroluminescent fiber according to any one of claims 1 to 5 or the electroluminescent fiber prepared by the preparation method according to any one of claims 6 to 8 in luminescent textiles or intelligent luminescent fabrics.
10. Use according to claim 9, wherein the luminescent textile is an electroluminescent fishing net; the intelligent luminous fabric is a fabric touch display screen.
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| HAIFENG YANG: "Light-Emitting Coaxial Nanofibers", 《ACS NANO》, vol. 6, no. 1, pages 622 - 628 * |
| XIANG SHI: "Large-area display textiles integrated with functional systems", 《NATURE》, vol. 591, pages 240 - 259 * |
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