CN115467082A - Preparation method of light and efficient MXene fiber non-woven fabric for electromagnetic shielding - Google Patents
Preparation method of light and efficient MXene fiber non-woven fabric for electromagnetic shielding Download PDFInfo
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- CN115467082A CN115467082A CN202211223517.8A CN202211223517A CN115467082A CN 115467082 A CN115467082 A CN 115467082A CN 202211223517 A CN202211223517 A CN 202211223517A CN 115467082 A CN115467082 A CN 115467082A
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4209—Inorganic fibres
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
- H05K9/009—Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising electro-conductive fibres, e.g. metal fibres, carbon fibres, metallised textile fibres, electro-conductive mesh, woven, non-woven mat, fleece, cross-linked
Abstract
The invention discloses a preparation method of a light and high-efficiency MXene fiber non-woven fabric for electromagnetic shielding, wherein the MXene fiber non-woven fabric prepared by the method is completely composed of MXene fibers, the MXene fibers are mutually overlapped to form a three-dimensional network structure, the MXene fibers at the intersection points of grids are mutually fused, and the MXene fibers are formed by MXene nanosheets which are directionally arranged along the axial direction. Compared with the existing MXene modified fabric or composite fabric containing high molecular polymer, the conductive and light-weight fabric has the advantages of obviously improved conductivity, light weight and excellent electromagnetic shielding performance. The MXene short fibers are directly obtained by adopting a wet spinning method, the MXene non-woven fabric structure with lapped fibers and a flat shape is obtained by introducing various alcohols and then carrying out wet assembly, the technical problem that the MXene short fibers are excessively fused and cannot be formed into the non-woven fabric is solved by introducing the alcohol solvent, and the method is simple and is easy to prepare in batches.
Description
Technical Field
The invention belongs to the field of MXene fabric electromagnetic shielding, and relates to a preparation method of a light and efficient MXene fiber non-woven fabric for electromagnetic shielding.
Background
With the explosion of communication technology and wearable electronics, highly integrated electronic systems can be producedThe electromagnetic wave radiation of different wave bands inevitably poses more and more threats to the working efficiency and the human health of adjacent equipment. To effectively solve this problem, metal materials are widely used to eliminate or shield electromagnetic radiation. However, due to its high density, poor corrosion resistance, poor processability and other disadvantages, further applications are severely limited. MXene, a newly emerging two-dimensional transition metal carbide and/or nitride, has excellent metal-like conductivity and layered structure, with excellent light weight and corrosion resistance, which makes it a recognized and promising electromagnetic shielding material. For example, faisal Shahzad et al reported 45 μm Ti prepared by vacuum assisted filtration 3 C 2 T x The thin film has an excellent electromagnetic interference shielding performance of 92dB (F. Shahzad, science,2016,353, 1137-1140), superior to metallic materials (e.g., copper, aluminum) and carbon-based materials.
On the other hand, as the demand for wearable devices increases, electronic and smart textiles are receiving great attention due to their flexibility, stretchability and breathability. Due to their inherent fibrous and porous properties, electronic textiles have been increasingly studied for their function in combination with electromagnetic interference shielding. Currently, some progress has been made in designing different kinds of MXene-based electromagnetic shielding fabrics by different strategies. These methods can be categorized into two groups, the first group is to coat the surface of the fabric substrate with one or more layers of uniform MXene by dipping, dripping, spraying, etc. The second method is to obtain MXene modified fiber or MXene composite fiber and then to prepare MXene-based electromagnetic shielding fabric by using the techniques of sewing, weaving and the like. However, to obtain excellent electromagnetic shielding performance, the MXene loading needs to be increased to increase the conductivity, which inevitably results in flake accumulation on the fiber surface, thereby affecting the intrinsic properties of the fabric or polymer. The MXene-based textiles obtained by the two above-mentioned methods still have difficulty in increasing the MXene loading without affecting the characteristics of the textile substrate. At present, no reports are found on electromagnetic shielding fabrics completely consisting of MXene fibers.
Disclosure of Invention
Aiming at the problems that the existing MXene modified electromagnetic shielding fabric is low in MXene content and conductivity and restricts the performance in practical electromagnetic shielding application, the invention provides a preparation method of a light and high-efficiency MXene fiber non-woven fabric for electromagnetic shielding, which is composed of pure MXene fibers.
The purpose of the invention is realized by the following technical scheme:
a preparation method of MXene fiber non-woven fabric for light high-efficiency electromagnetic shielding comprises the following steps:
step (1) adopting HCl and LiF to etch Ti 3 AlC 2 The method for preparing MXene comprises the following steps: taking a mixture with the mass ratio of 1:1.6 to 2 of Ti 3 AlC 2 And LiF, adding the LiF into 9mol/LHCl, fully stirring, and slowly adding Ti into the mixed solution 3 AlC 2 Stirring, and etching the mixed solution for 24-30 h at 40-50 ℃;
and (2) putting the solution obtained in the step (1) into a centrifuge tube, washing the centrifuge tube with deionized water until the pH value of the solution is more than 6, shaking the solution uniformly by using a vortex oscillator, and then carrying out centrifugal collection on MXene to obtain an upper-layer solution, namely the MXene dispersion liquid, wherein:
the shaking time is 5-30 min;
the rotation speed of the centrifugal collection is 1500-3500 rpm, and the time is 30min;
step (3) obtaining high-concentration MXene-water dispersion liquid of 15-30 mg/mL by centrifugal concentration, and taking the high-concentration MXene-water dispersion liquid as spinning solution;
and (4) allowing the spinning solution to enter a coagulating bath through a spinning pipe at an extrusion speed of 5-500 mu L/min for coagulating into fibers to obtain MXene short fibers, wherein:
the diameter of the spinning pipe is 50-1000 mu m;
the coagulating bath is MgSO 4 Solution, NH 4 Cl or CaCl 2 Solution, mgSO 4 The mass concentration of the solution is 0.5-5 percent, NH 4 The mass concentration of Cl is 0.5-5 percent, and CaCl 2 The mass concentration of the solution is 2-5%;
the spinning solution is soaked in the coagulating bath for 0.5-1.5 h;
the coagulating bath is placed in a rotatable round vessel, and the length of MXene short fibers is controlled to be 2-8 mm by controlling the ratio of the rotating speed of the round vessel to the extrusion speed of the spinning solution;
step (5) washing the MXene short fibers obtained in the step (4) by using ionized water, repeating for 2-4 times, and then adding an alcohol solvent into the short fiber suspension to form an MXene fiber suspension dispersed by a water and alcohol solvent mixed solution, wherein:
the alcohol solvent is one of methanol, ethanol, isopropanol and tert-butanol;
in the MXene fiber suspension dispersed by the mixed solution of water and the alcohol solvent, the volume ratio of water to alcohol is strictly controlled, and a large number of experiments show that if the proportion of water is too large, a non-woven fabric structure cannot be obtained, MXene short fibers obtained after filtering are almost fused together, and an obvious fiber structure cannot be seen, which is probably due to strong hydrogen bond interaction between MXene nanosheets at the junction to cause rearrangement of the MXene nanosheets; if the proportion of the alcohol solvent is too large, the fusion points are obviously reduced, probably because enough water is not available, the fusion difficulty among MXene fibers is increased, and the electric conduction and electromagnetic shielding performance of the MXene fibers are influenced; therefore, the volume ratio of the water to the alcohol solvent is finally determined to be 3:1-1:3;
and (6) carrying out vacuum filtration and collection on the MXene fiber suspension obtained in the step (5), and carrying out vacuum drying at room temperature to obtain the MXene fiber non-woven fabric, wherein:
the vacuum drying time is 25-35 h;
in the MXene fiber non-woven fabric, MXene fibers are mutually overlapped to form a three-dimensional network structure, the MXene fibers at the grid intersection point are mutually fused, and the MXene fibers are formed by the oriented arrangement of MXene nano sheets along the axial direction.
Compared with the prior art, the invention has the following advantages:
1. the MXene nano-sheet prepared by the method has a single-layer structure, and the size of the sheet layer is 3-4 mu m.
2. The MXene fiber non-woven fabric prepared by the method is completely composed of MXene fibers, no high polymer or other weak conductive materials are added, the MXene fibers are fused with one another to form a conductive network, and the MXene fibers are connected and fused to a certain extent, so that the interaction among the fibers is greatly enhanced. Compared with the existing MXene modified fabric or composite fabric containing high molecular polymer, the conductive and light-weight fabric has the advantages of obviously improved conductivity, light weight and excellent electromagnetic shielding performance.
3. The invention is to prepare the non-woven fabric with a network structure only formed by MXene, directly obtain MXene short fibers by a wet spinning method, obtain the MXene non-woven fabric structure with lapped fibers and flat shape by wet assembly after introducing various alcohols, solve the technical problem that the MXene short fibers are excessively fused and cannot be formed into the non-woven fabric by introducing an alcohol solvent, and have simple method and easy batch preparation.
4. The invention brings the ideal properties of the one-dimensional MXene fiber into a two-dimensional fabric material to obtain the pure MXene non-woven fabric with light weight, conductivity and high-efficiency electromagnetic shielding effect.
Drawings
FIG. 1 is an atomic force microscope picture of MXene nanosheets obtained in step (2) of example 1;
fig. 2 is a scanning electron microscope photograph of the MXene fiber nonwoven fabric obtained in step (6) of example 1.
Detailed Description
The technical solution of the present invention is further described below with reference to the accompanying drawings, but not limited thereto, and any modification or equivalent replacement of the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention shall be covered by the protection scope of the present invention.
Example 1:
(1) Etching Ti with HCl and LiF 3 AlC 2 The method of (1) carries out MXene preparation: taking the mass ratio of 1:1.6 of Ti 3 AlC 2 And LiF, adding the LiF into 9mol/L HCl. Fully stirring HCl and LiF for 10min, and slowly adding Ti into the mixed solution 3 AlC 2 And stirred, and then the mixed solution was etched at 50 ℃ for 30 hours.
(2) And (2) filling the solution obtained in the step (1) into a centrifugal tube, and washing with deionized water. The cleaning process is that the rotation speed of the centrifuge is 3500rpm, the duration is 5min, the deionized water is continuously added after the supernatant is poured off, and the steps are repeated until the pH value of the solution is more than 6. Shaking for 30min by using a vortex oscillator, then collecting MXene, and centrifuging for 30min at 1500rpm to obtain an upper layer solution, namely MXene dispersion liquid.
(3) The resulting solution was concentrated by centrifugation to give a 23mg/mL high-concentration MXene dispersion in water as a spinning solution.
(4) The spinning solution was passed through a spinning tube having a diameter of 200 μm at an extrusion speed of 60 μ L/min into 0.5% by mass of MgSO 4 MXene short fiber with the length of 4-8 mm is obtained in a coagulating bath, and is coagulated into filaments after being soaked in the coagulating bath for 1 hour.
(5) And (3) washing the MXene short fibers obtained in the step (4) by using ionized water, repeating the washing for 3 times, and then adding a certain proportion of ethanol into the short fiber suspension to form MXene fiber suspension dispersed by a mixed solution of water and ethanol (the volume ratio is 3:1).
(6) And (5) carrying out vacuum filtration and collection on the MXene fiber suspension obtained in the step (5), and carrying out vacuum drying for 30h at room temperature to obtain the MXene fiber non-woven fabric.
An atomic force microscope picture of the MXene nanosheet obtained in this example is shown in FIG. 1, a scanning electron microscope picture of the MXene fiber non-woven fabric is shown in FIG. 2, the microstructure of the MXene fiber non-woven fabric is randomly piled MXene short fibers, and the density of the non-woven fabric is about 0.6g/cm 3 The conductivity is 610-650S/cm, and the electromagnetic shielding effectiveness reaches 73.0dB when the thickness is 102 mu m.
Example 2:
(1) Etching Ti with HCl and LiF 3 AlC 2 The method of (1) carries out MXene preparation: taking the mass ratio of 1:2 of Ti 3 AlC 2 And LiF, adding the LiF into 9mol/L HCl. Fully stirring HCl and LiF for 10min, and slowly adding Ti into the mixed solution 3 AlC 2 And stirred, and then the mixed solution is etched for 24 hours at 40 ℃.
(2) And (2) filling the solution obtained in the step (1) into a centrifugal tube, and washing with deionized water. The cleaning process is that the rotation speed of the centrifuge is 3500rpm, the duration is 5min, the deionized water is continuously added after the supernatant is poured off, and the steps are repeated until the pH value of the solution is more than 6. Shaking for 5min by using a vortex oscillator, then collecting MXene, and centrifuging at 1500rpm for 30min to obtain an upper layer solution, namely MXene dispersion liquid.
(3) Concentration by centrifugation gave a 20mg/mL high concentration MXene dispersion in water as the spinning solution.
(4) The spinning solution was extruded at 40. Mu.L/min through a spinning tube having a diameter of 150 μm and passed through a 5% by mass MgSO (MgSO) plate 4 MXene short fiber with the length of 4-8 mm is obtained in a coagulating bath, and is coagulated into filaments after being soaked in the coagulating bath for 1 hour.
(5) And (3) washing the MXene short fibers obtained in the step (4) by using ionized water, repeating the washing for 3 times, and then adding a certain proportion of ethanol into the short fiber suspension to form MXene fiber suspension dispersed by a mixed solution of water and ethanol (the volume ratio is 1:1).
(6) And (5) carrying out vacuum filtration and collection on the MXene fiber suspension obtained in the step (5), and carrying out vacuum drying for 30h at room temperature to obtain the MXene fiber non-woven fabric.
The microstructure of the MXene fiber nonwoven fabric obtained in this example was MXene short fibers stacked in disorder, and the density of the nonwoven fabric was about 0.31g/cm 3 The conductivity is 350-370S/cm, and the electromagnetic shielding effectiveness reaches 38.8dB when the thickness is 163 mu m.
Example 3:
(1) Etching Ti with HCl and LiF 3 AlC 2 The method for preparing MXene comprises the following steps of: 2 of Ti 3 AlC 2 And LiF, adding the LiF into 9mol/L HCl. Fully stirring HCl and LiF for 10min, and slowly adding Ti into the mixed solution 3 AlC 2 And stirred, and then the mixed solution was etched at 50 ℃ for 30 hours.
(2) And (2) filling the solution obtained in the step (1) into a centrifugal tube, and washing with deionized water. The cleaning process is that the rotation speed of the centrifuge is 3500rpm, the duration is 5min, the deionized water is continuously added after the supernatant is poured off, and the steps are repeated until the pH value of the solution is more than 6. Shaking for 30min by using a vortex oscillator, then collecting MXene, and centrifuging for 30min at 3500rpm to obtain an upper layer solution, namely the MXene dispersion liquid.
(3) Concentration by centrifugation gave a high concentration MXene dispersion of 15mg/mL in water as the spinning solution.
(4) The spinning solution is extruded at a speed of 5 mul/min through a spinning tube with a diameter of 50 mu m into CaCl with a mass fraction of 5% 2 MXene short fiber with the diameter of 2-8 mm is obtained in a coagulating bath, and is coagulated into filaments after being soaked in the coagulating bath for 1 hour.
(5) And (5) washing the MXene short fibers obtained in the step (4) by using ionized water, repeating the washing for 3 times, and then adding a certain proportion of methanol into the short fiber suspension to form an MXene fiber suspension dispersed by a mixed solution of water and methanol (the volume ratio is 1:1).
(6) And (5) carrying out vacuum filtration and collection on the MXene fiber suspension obtained in the step (5), and carrying out vacuum drying for 30h at room temperature to obtain the MXene fiber non-woven fabric.
The microstructure of the MXene fiber nonwoven fabric obtained in this example was MXene short fibers stacked in disorder, and the density of the nonwoven fabric was about 0.67g/cm 3 The conductivity is 380-430S/cm, and the electromagnetic shielding effectiveness reaches 42.1dB when the thickness is 145 mu m.
Example 4:
this example differs from example 1 in that:
(3) The resulting solution was concentrated by centrifugation to give a high concentration MXene dispersion of 30mg/mL in water as a spinning solution.
(4) The spinning solution was passed through a spinning tube having a diameter of 200 μm at an extrusion speed of 60 μ L/min into NH having a mass fraction of 0.5% 4 MXene short fibers with the length of 4-8 mm are obtained in a Cl coagulating bath, and are coagulated into filaments after being soaked in the coagulating bath for 1 hour.
(5) And (3) washing the MXene short fibers obtained in the step (4) by using ionized water, repeating the washing for 3 times, and then adding a certain proportion of isopropanol into the short fiber suspension to form MXene fiber suspension dispersed by a mixed solution of water and isopropanol (the volume ratio is 1:3).
(6) And (5) carrying out vacuum filtration and collection on the MXene fiber suspension obtained in the step (5), and carrying out vacuum drying for 30h at room temperature to obtain the MXene fiber non-woven fabric.
The microstructure of the MXene fiber nonwoven fabric obtained in this example was randomly piled MXene short fibers, and the density of the nonwoven fabric was about 0.18g/cm 3 The conductivity is 50-70S/cm, and the electromagnetic shielding effectiveness reaches 32.4dB when the thickness is 350 mu m.
Example 5:
this example differs from example 1 in that:
(3) The resulting solution was concentrated by centrifugation to give a high concentration MXene dispersion of 30mg/mL in water as a spinning solution.
(4) The spinning solution is extruded at a speed of 60mL/min through a spinning tube with a diameter of 200 μm into 5% NH 4 MXene short fibers with the diameter of 4-8 mm are obtained in a Cl coagulating bath, and are coagulated into filaments after being soaked in the coagulating bath for 1 hour.
(5) And (3) washing the MXene short fibers obtained in the step (4) by using ionized water, repeating the washing for 3 times, and then adding a certain proportion of tert-butyl alcohol into the short fiber suspension to form MXene fiber suspension dispersed by a mixed solution of water and tert-butyl alcohol (the volume ratio is 1:2).
(6) And (5) carrying out vacuum filtration and collection on the MXene fiber suspension obtained in the step (5), and carrying out vacuum drying for 30h at room temperature to obtain the MXene fiber non-woven fabric.
The microstructure of the MXene fiber nonwoven fabric obtained in this example was MXene short fibers stacked in disorder, and the density of the nonwoven fabric was about 0.20g/cm 3 The conductivity is 80-110S/cm, and the electromagnetic shielding effectiveness reaches 36.7dB when the thickness is 316 mu m.
Example 6:
this example differs from example 1 in that:
(3) The resulting solution was concentrated by centrifugation to give a high concentration MXene dispersion of 30mg/mL in water as a spinning solution.
(4) The spinning solution is extruded at a speed of 500mL/min through a spinning tube with a diameter of 1000 μm into CaCl with a mass fraction of 2% 2 MXene short fiber with the diameter of 2-4 mm is obtained in a coagulating bath, and is coagulated into filaments after being soaked in the coagulating bath for 1 hour.
(5) And (5) washing the MXene short fibers obtained in the step (4) by using ionized water, repeating the washing for 3 times, and then adding a certain proportion of ethanol into the short fiber suspension to form an MXene fiber suspension dispersed by a mixed solution of water and ethanol (the volume ratio is 2:1).
(6) And (5) carrying out vacuum filtration and collection on the MXene fiber suspension obtained in the step (5), and carrying out vacuum drying for 30h at room temperature to obtain the MXene fiber non-woven fabric.
The microstructure of the MXene fiber nonwoven fabric obtained in this example was MXene short fibers stacked in disorder, and the density of the nonwoven fabric was about 0.42g/cm 3 The conductivity is 400 to 450S/cm.
Claims (10)
1. A preparation method of light MXene fiber non-woven fabric for high-efficiency electromagnetic shielding is characterized by comprising the following steps:
step (1) adopts HCl and LiF to etch Ti 3 AlC 2 The method of (1) preparing MXene solution;
step (2) putting the solution obtained in the step (1) into a centrifugal tube, washing with deionized water until the pH value of the solution is more than 6, shaking up by using a vortex oscillator, and then carrying out centrifugal collection on MXene to obtain an upper layer solution, namely MXene dispersion liquid;
step (3) obtaining high-concentration MXene-water dispersion liquid of 15-30 mg/mL by centrifugal concentration, and taking the MXene-water dispersion liquid as spinning solution;
step (4) the spinning solution enters a coagulating bath through a spinning pipe at an extrusion speed of 5-500 mu L/min to be coagulated into filaments to obtain MXene short fibers;
step (5) washing the MXene short fibers obtained in step (4) by using ionized water, repeating for 2-4 times, and then adding an alcohol solvent into the short fiber suspension to form MXene fiber suspension dispersed by a mixed solution of water and the alcohol solvent;
and (6) carrying out vacuum filtration and collection on the MXene fiber suspension obtained in the step (5), and carrying out vacuum drying at room temperature to obtain the MXene fiber non-woven fabric.
2. The method for preparing the MXene fiber non-woven fabric for the lightweight and high efficiency electromagnetic shielding according to claim 1, wherein the specific steps of the step (1) are as follows: taking the mass ratio of 1:1.6 to 2 of Ti 3 AlC 2 And LiF, adding the LiF into HCl, fully stirring, and slowly adding Ti into the mixed solution 3 AlC 2 Stirring, and dissolving the mixtureEtching the solution for 24 to 30 hours at the temperature of between 40 and 50 ℃.
3. The method for preparing the MXene fiber non-woven fabric for the lightweight and high efficiency electromagnetic shielding according to claim 1, wherein in the step (2), the shaking time is 5-30 min; the rotational speed of centrifugal collection is 1500-3500 rpm, and the time is 30min.
4. The method for preparing the MXene fiber non-woven fabric for the lightweight and high efficiency electromagnetic shielding according to claim 1, wherein in the step (4), the diameter of the spinning tube is 50-1000 μm; the spinning solution is soaked in the coagulating bath for 0.5 to 1.5 hours; the length of MXene short fiber is 2-8 mm.
5. The method for preparing MXene fiber non-woven fabric for light weight and high efficiency electromagnetic shielding according to claim 1 or 4, wherein the coagulating bath is MgSO 4 Solution, NH 4 Cl or CaCl 2 And (3) solution.
6. The method for preparing MXene fiber non-woven fabric for electromagnetic shielding according to claim 5, wherein the MgSO is MgSO 4 The mass concentration of the solution is 0.5-5 percent, NH 4 The mass concentration of Cl is 0.5-5 percent, and CaCl 2 The mass concentration of the solution is 2-5%.
7. The method for preparing the MXene fiber non-woven fabric for the high-efficiency electromagnetic shielding of claim 1, wherein in the step (5), the volume ratio of water to the alcohol solvent is 3:1-1:3.
8. The method for preparing the MXene fiber non-woven fabric for the lightweight high-efficiency electromagnetic shielding according to claim 1 or 7, wherein the alcohol solvent is one of methanol, ethanol, isopropanol and tert-butanol.
9. The method for preparing the MXene fiber non-woven fabric for the lightweight and high efficiency electromagnetic shielding according to claim 1, wherein in the step (6), the vacuum drying time is 25-35 h; in the MXene fiber non-woven fabric, MXene fibers are mutually overlapped to form a three-dimensional network structure, the MXene fibers at the intersection points of grids are mutually fused, and the MXene fibers are formed by the directional arrangement of MXene nano sheets along the axial direction.
10. A light-weight MXene fiber non-woven fabric for electromagnetic shielding prepared by the method of any one of claims 1 to 9.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106192201A (en) * | 2016-07-18 | 2016-12-07 | 浙江大学 | A kind of graphene fiber non-woven fabrics and preparation method thereof |
| CN108264885A (en) * | 2018-01-18 | 2018-07-10 | 北京林业大学 | A kind of electromagnetic shielding film of mechanics enhancing and preparation method thereof |
| CN111636115A (en) * | 2020-06-12 | 2020-09-08 | 东华大学 | Polyvinyl alcohol-based fiber material for electromagnetic shielding and preparation method thereof |
| CN112458553A (en) * | 2020-10-29 | 2021-03-09 | 烟台泰和新材料股份有限公司 | High-performance carbon nano/MXene composite fiber and preparation method thereof |
| CN113718371A (en) * | 2021-09-24 | 2021-11-30 | 中国科学院苏州纳米技术与纳米仿生研究所 | MXene aerogel fiber, preparation method and application thereof |
| CN113774523A (en) * | 2021-10-29 | 2021-12-10 | 哈尔滨工业大学 | Preparation method of MXene/sodium alginate composite non-woven fabric |
| CN114635282A (en) * | 2022-02-11 | 2022-06-17 | 江苏新视界先进功能纤维创新中心有限公司 | Preparation method of flexible electromagnetic shielding material based on two-dimensional titanium carbide (MXene) and aramid fiber composite |
| CN115094621A (en) * | 2022-07-04 | 2022-09-23 | 安徽工程大学 | Skin-core type MXene fiber aerogel and preparation method thereof |
-
2022
- 2022-10-08 CN CN202211223517.8A patent/CN115467082A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106192201A (en) * | 2016-07-18 | 2016-12-07 | 浙江大学 | A kind of graphene fiber non-woven fabrics and preparation method thereof |
| CN108264885A (en) * | 2018-01-18 | 2018-07-10 | 北京林业大学 | A kind of electromagnetic shielding film of mechanics enhancing and preparation method thereof |
| CN111636115A (en) * | 2020-06-12 | 2020-09-08 | 东华大学 | Polyvinyl alcohol-based fiber material for electromagnetic shielding and preparation method thereof |
| CN112458553A (en) * | 2020-10-29 | 2021-03-09 | 烟台泰和新材料股份有限公司 | High-performance carbon nano/MXene composite fiber and preparation method thereof |
| CN113718371A (en) * | 2021-09-24 | 2021-11-30 | 中国科学院苏州纳米技术与纳米仿生研究所 | MXene aerogel fiber, preparation method and application thereof |
| CN113774523A (en) * | 2021-10-29 | 2021-12-10 | 哈尔滨工业大学 | Preparation method of MXene/sodium alginate composite non-woven fabric |
| CN114635282A (en) * | 2022-02-11 | 2022-06-17 | 江苏新视界先进功能纤维创新中心有限公司 | Preparation method of flexible electromagnetic shielding material based on two-dimensional titanium carbide (MXene) and aramid fiber composite |
| CN115094621A (en) * | 2022-07-04 | 2022-09-23 | 安徽工程大学 | Skin-core type MXene fiber aerogel and preparation method thereof |
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