CN114804109A - MXene composite film with oriented fold structure and preparation method thereof - Google Patents
MXene composite film with oriented fold structure and preparation method thereof Download PDFInfo
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- CN114804109A CN114804109A CN202210377061.4A CN202210377061A CN114804109A CN 114804109 A CN114804109 A CN 114804109A CN 202210377061 A CN202210377061 A CN 202210377061A CN 114804109 A CN114804109 A CN 114804109A
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- 239000002131 composite material Substances 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 38
- 239000006185 dispersion Substances 0.000 claims abstract description 31
- 239000007788 liquid Substances 0.000 claims abstract description 28
- 239000012528 membrane Substances 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000000967 suction filtration Methods 0.000 claims abstract description 19
- 238000001035 drying Methods 0.000 claims abstract description 11
- 239000002135 nanosheet Substances 0.000 claims abstract description 10
- 238000002791 soaking Methods 0.000 claims abstract description 7
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 claims description 34
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 32
- UQZIWOQVLUASCR-UHFFFAOYSA-N alumane;titanium Chemical compound [AlH3].[Ti] UQZIWOQVLUASCR-UHFFFAOYSA-N 0.000 claims description 25
- 239000002244 precipitate Substances 0.000 claims description 17
- 238000005530 etching Methods 0.000 claims description 16
- 238000003756 stirring Methods 0.000 claims description 16
- 239000011259 mixed solution Substances 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 12
- 239000006228 supernatant Substances 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 11
- 238000005406 washing Methods 0.000 claims description 10
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 6
- 239000010936 titanium Substances 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 5
- 239000000463 material Substances 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 abstract description 2
- 239000010408 film Substances 0.000 description 32
- 230000037303 wrinkles Effects 0.000 description 8
- 239000000243 solution Substances 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000008367 deionised water Substances 0.000 description 5
- 229910021641 deionized water Inorganic materials 0.000 description 5
- 239000002086 nanomaterial Substances 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 230000007480 spreading Effects 0.000 description 4
- 238000003892 spreading Methods 0.000 description 4
- 239000010409 thin film Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/90—Carbides
- C01B32/914—Carbides of single elements
- C01B32/921—Titanium carbide
-
- 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
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/08—Materials not undergoing a change of physical state when used
- C09K5/14—Solid materials, e.g. powdery or granular
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/20—Particle morphology extending in two dimensions, e.g. plate-like
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/10—Solid density
Abstract
An MXene composite film with an oriented fold structure and a preparation method thereof belong to the field of material science, and the specific scheme is as follows: an MXene composite film with an oriented fold structure comprises an MXene nanosheet layer and toilet paper, wherein the MXene nanosheet layer is attached to the toilet paper. The preparation method comprises the following steps: step one, preparing MXene dispersion liquid; soaking the toilet paper, flatly paving the toilet paper on a filter membrane, carrying out suction filtration on the MXene dispersion liquid on the surface of the toilet paper by adopting a suction filtration method to form a membrane, and drying to obtain the MXene composite membrane with the directional fold structure. The MXene composite film with the oriented fold structure is prepared by utilizing the characteristic of water absorption and oriented extension of toilet paper. Due to the existence of the fold structure, the composite film shows larger specific surface area and deformability, and has certain improvement in electromagnetic shielding, out-of-plane heat conduction and mechanical properties compared with a pure MXene film.
Description
Technical Field
The invention belongs to the field of material science, and particularly relates to an MXene composite film with an oriented fold structure and a preparation method thereof.
Background
Two-dimensional nanomaterials tend to have excellent properties due to their unique structure. To take advantage of these excellent properties of nanomaterials, they need to be assembled into macroscopic bodies. Due to the two-dimensional structure of the two-dimensional material, the two-dimensional nano material is assembled into the two-dimensional film, so that the flexibility of the film can be maintained to the maximum extent while various performances of the film are realized. At present, a plurality of methods for preparing the film comprise a suction filtration method, a lifting film forming method, a spin coating method and the like. The thin films prepared by the methods often have flat and layered structures, and the advantages of the nano materials cannot be fully exerted due to the small specific surface area of the tightly stacked and flat structures. Therefore, it is necessary to design the surface of the thin film in the out-of-plane direction to increase the specific surface area and deformability of the thin film, thereby making the most use of the excellent properties of the nanomaterial itself. Fold structures are widely found in nature, such as the mushroom folds, sulcus loops within the brain, fingerprints on fingers, and the like. The fold structure can greatly improve the specific surface area and the deformability, thereby realizing the performance which cannot be realized by a straight structure.
Disclosure of Invention
The invention provides an MXene composite film with an oriented fold structure and a preparation method thereof, aiming at solving the problems of small specific surface area and poor deformability of an MXene film prepared by the existing method.
In order to achieve the purpose, the invention adopts the following technical scheme:
an MXene composite film with an oriented fold structure comprises an MXene nano-sheet layer and toilet paper, wherein the MXene nano-sheet layer is attached to the toilet paper.
The preparation method of the MXene composite film with the oriented fold structure comprises the following steps:
step one, preparing MXene dispersion liquid;
soaking the toilet paper, flatly paving the toilet paper on a filter membrane, carrying out suction filtration on the MXene dispersion liquid on the surface of the toilet paper by adopting a suction filtration method to form a membrane, and drying to obtain the MXene composite membrane with the directional fold structure.
Further, in the first step, the method for preparing the MXene dispersion liquid comprises the following steps:
step 1, etching titanium aluminum carbide:preparing MXene by adopting a method of etching titanium aluminum carbide by hydrofluoric acid; taking the mass ratio of 1: 1.6-2 of Ti 3 AlC 2 Adding lithium fluoride into 6-9mol/L hydrochloric acid, fully stirring the hydrochloric acid and the lithium fluoride to obtain a mixed solution, slowly adding titanium aluminum carbide into the mixed solution, stirring, avoiding temperature change in the mixing process, and keeping the temperature of 35-50 ℃ for etching for 24-30 hours after all the titanium aluminum carbide is added to obtain a mixture;
step 2, collecting MXene dispersion liquid: and (3) centrifugally separating the mixture, washing the precipitate for multiple times until the pH value of the supernatant is greater than 6 after centrifugal separation, shaking the precipitate uniformly by using a vortex oscillator until the precipitate is completely dispersed in water after washing, and centrifugally separating to obtain the supernatant, namely MXene dispersion liquid.
Further, in step 1, the time for fully stirring the lithium fluoride and the hydrochloric acid is at least 20 min.
Further, in step 1, the time per 1g of titanium aluminum carbide added to the mixed solution is at least 10 min.
Further, in step 2, the rotation speed of the centrifuge is 3500rpm in each process of washing the precipitate with water, and the duration is 5-10 min.
Further, in step 2, the rotation speed of the vortex oscillator is 1500-.
Further, in step 2, the rotation speed of the centrifuge is 1500-.
Further, in the second step, the vacuum degree of the vacuum pumping bottle is-0.1 Mpa.
Further, in the second step, the drying temperature is room temperature, and the drying time is 4-8 h.
Compared with the prior art, the invention has the beneficial effects that:
compared with graphene, MXene has more excellent conductivity due to a large number of functional groups on the surface, and has wide application prospects in the aspects of supercapacitors, sensing, electromagnetic shielding, photothermal conversion and the like. The MXene nano-sheet is compounded with the toilet paper, and the MXene composite film with the oriented fold structure is prepared by utilizing the characteristic of water absorption and oriented extension of the toilet paper. Due to the existence of the fold structure, the composite film shows larger specific surface area and deformability, and has certain improvement in electromagnetic shielding, out-of-plane heat conduction and mechanical properties compared with a pure MXene film.
Drawings
FIG. 1 shows MXene dispersion obtained in the first step of example 1;
FIG. 2 is a photograph of an MXene composite film with oriented wrinkles obtained in step three of example 1;
fig. 3 is the micro-topography of the MXene composite film with directional wrinkling obtained in step three of example 1.
Detailed Description
The technical solutions of the present invention are further described below with reference to fig. 1 to 3, but the present invention is not limited thereto, and modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Detailed description of the invention
An MXene composite film with an oriented fold structure comprises an MXene nano-sheet layer and toilet paper, wherein the MXene nano-sheet layer is attached to the toilet paper.
Detailed description of the invention
A method for preparing an MXene composite film with an oriented wrinkle structure, according to the first embodiment, the method comprises the following steps:
step one, preparing MXene dispersion liquid;
step two, an MXene composite film with an oriented fold structure: soaking the commercially available toilet paper, spreading the toilet paper on a filter membrane, performing suction filtration on 6-14ml of MXene dispersion liquid obtained in the step two by adopting a suction filtration method, performing suction filtration on the surface of the toilet paper to form a film, and drying the film for 4-8 hours at room temperature to obtain an MXene composite film with a directional fold structure;
further, the method for preparing MXene dispersion comprises the following steps:
step 1, etching titanium aluminum carbide: preparing MXene by adopting a method of etching titanium aluminum carbide by using hydrofluoric acid according to mass ratioIs 1: 1.6-2 of Ti 3 AlC 2 And lithium fluoride, which is added to 6 to 9mol/L hydrochloric acid, 1g of Ti 3 AlC 2 Corresponding to 20ml of hydrochloric acid. Fully stirring hydrochloric acid and lithium fluoride to obtain a mixed solution, slowly adding titanium aluminum carbide into the mixed solution, and stirring, wherein the temperature change is avoided in the mixing process (the temperature can be set by setting the temperature of an oil bath). Adding all titanium aluminum carbide, and etching at 35-50 ℃ for 24-30 hours to obtain a mixture;
step 2, collecting MXene dispersion liquid: and (2) putting the mixture obtained in the step 1I into a centrifugal tube for centrifugal separation, and washing the precipitate for multiple times by using deionized water until the pH value of the supernatant is more than 6, (MXene nano-sheets cannot be dispersed in a solvent with the pH value of less than 6). The rotation speed of the centrifuge in each cleaning process is 3500rpm, and the time is 5-10 min. Shaking by vortex shaker for 30-60min to completely disperse the precipitate in water. Then 1500-. Adding water to dilute the solution to obtain MXene dispersion liquid with the concentration of 5 mg/ml;
the suction filtration is realized by a circulating water pump.
Further, in step 1, lithium fluoride is stirred in hydrochloric acid for at least 20 min.
Further, in step 1, the time per 1g of titanium aluminum carbide added to the mixed solution is at least 10 min.
Further, in step 2, the precipitate is washed with deionized water for a plurality of times until the pH value of the supernatant is greater than 6, and at this time, the color of the supernatant is black.
Further, in the second step, the vacuum degree of the vacuum pumping bottle is-0.1 Mpa.
Furthermore, in the second step, the toilet paper is completely spread after being soaked, so that the surface is prevented from fluctuating.
MXene with a large number of hydrophilic functional groups is prepared by using the MILD method, and can be uniformly dispersed in water; the MXene composite film with the oriented wrinkle structure is prepared by using a suction filtration method, the film has excellent flexibility and deformability, and the surface area is higher due to the wrinkles; the MXene composite film prepared by the embodiment has anisotropic mechanical properties due to a large amount of oriented wrinkles in the MXene composite film.
Example 1
Firstly, etching titanium aluminum carbide: MXene is prepared by adopting a method of etching titanium aluminum carbide by hydrofluoric acid, and 2g of Ti is taken 3 AlC 2 And 4g of lithium fluoride, which was added to 40ml of 9mol/L hydrochloric acid. Fully stirring hydrochloric acid and lithium fluoride to obtain a mixed solution, slowly adding titanium aluminum carbide into the mixed solution, and stirring to avoid temperature change in the mixing process. Adding all titanium aluminum carbide, and etching for 30 hours at 50 ℃ to obtain a mixture;
secondly, collecting MXene dispersion liquid: and (4) putting the mixture obtained in the step one into a centrifugal tube for centrifugal separation, and washing the precipitate for multiple times by using deionized water until the pH value of the supernatant is more than 6. The rotation speed of the centrifuge in each cleaning process is 3500rpm, and the time is 5 min. The precipitate was completely dispersed in water by shaking with a vortex shaker for 60 min. Then centrifuging at 1500rpm for 30min, and collecting the upper layer liquid, namely MXene dispersion liquid. Adding water to dilute the solution to obtain MXene dispersion liquid with the concentration of 5 mg/ml;
thirdly, preparing the MXene composite film with the oriented fold structure: soaking the commercially available toilet paper, spreading the toilet paper on a filter membrane, performing suction filtration to obtain 6ml of MXene dispersion liquid obtained in the step two, performing suction filtration to form a membrane on the surface of the toilet paper, and drying at room temperature for 4 hours to obtain the MXene composite membrane with the oriented wrinkle structure.
The density of the MXene composite film with the oriented fold structure obtained in the example is 0.61g/cm 3 The electromagnetic shielding performance is 58.30dB, the out-of-plane thermal conductivity is 0.311W/mK, the tensile strength in the length direction is 14.45MPa, and the breaking strain is 28.77%.
Example 2
Firstly, etching titanium aluminum carbide: and etching by using a MILD method. Weighing 60mL of 3g of titanium aluminum carbide, 4.8g of lithium fluoride and 9mol/L hydrochloric acid, pouring the lithium fluoride into the hydrochloric acid, stirring until the lithium fluoride is completely dissolved to obtain a mixed solution, slowly adding the titanium aluminum carbide into the mixed solution, fully stirring, keeping the temperature of a reaction system in the process, heating the reaction system to 35 ℃ in an oil bath, and stirring for 24 hours to obtain a mixture.
Secondly, collecting MXene dispersion liquid: and (4) putting the mixture obtained in the step one into a centrifugal tube for centrifugal separation, and washing the precipitate for multiple times by using deionized water until the pH value of the supernatant is more than 6. The rotation speed of the centrifuge in each cleaning process is 3500rpm, and the time is 5 min. The precipitate was completely dispersed in water by shaking with a vortex shaker for 60 min. Then centrifuging at 1500rpm for 30min, and collecting the supernatant, namely MXene dispersion. Adding water to dilute the solution to obtain MXene dispersion liquid with the concentration of 5 mg/ml;
thirdly, preparing the MXene composite film with the oriented fold structure: soaking the commercially available toilet paper, spreading the toilet paper on a filter membrane, performing suction filtration on 10ml of MXene dispersion liquid obtained in the step two by adopting a suction filtration method, performing suction filtration on the surface of the toilet paper to form a membrane, and drying the membrane for 4 hours at room temperature to obtain the MXene composite membrane with the oriented wrinkle structure.
The density of the polymer-based MXene composite film obtained in this example was 0.88g/cm 3 The electromagnetic shielding performance is 69.68dB, the out-of-plane thermal conductivity is 0.599W/mK, the tensile strength in the length direction is 22.53MPa, and the breaking strain is 23.62%.
Example 3
Firstly, etching titanium aluminum carbide: and etching by using a MILD method. Weighing 60mL of 3g of titanium aluminum carbide, 4.8g of lithium fluoride and 9mol/L hydrochloric acid, pouring the lithium fluoride into the hydrochloric acid, stirring until the lithium fluoride is completely dissolved to obtain a mixed solution, slowly adding the titanium aluminum carbide into the mixed solution, fully stirring, keeping the temperature of a reaction system in the process, heating the reaction system to 35 ℃ in an oil bath, and stirring for 24 hours to obtain a mixture.
Secondly, collecting MXene dispersion liquid: and (4) putting the mixture obtained in the step one into a centrifugal tube for centrifugal separation, and washing the precipitate for multiple times by using deionized water until the pH value of the supernatant is more than 6. The rotation speed of the centrifuge in each cleaning process is 3500rpm, and the time is 5 min. The precipitate was completely dispersed in water by shaking with a vortex shaker for 60 min. Then centrifuging at 1500rpm for 30min, and collecting the supernatant, namely MXene dispersion. Adding water to dilute the solution to obtain MXene dispersion liquid with the concentration of 5 mg/ml;
thirdly, preparing the MXene composite film with the oriented fold structure: soaking the commercially available toilet paper, spreading the toilet paper on a filter membrane, performing suction filtration to obtain 14ml of MXene dispersion liquid obtained in the step two, performing suction filtration to form a membrane on the surface of the toilet paper, and drying at room temperature for 4 hours to obtain the MXene composite membrane with the oriented wrinkle structure.
The density of the polymer-based MXene composite film obtained in this example was 0.98g/cm 3 The electromagnetic shielding performance is 76.67dB, the out-of-plane thermal conductivity is 1.063W/mK, the tensile strength in the length direction is 29.38MPa, and the breaking strain is 16.73%.
Claims (10)
1. The MXene composite film with the oriented fold structure is characterized by comprising an MXene nanosheet layer and toilet paper, wherein the MXene nanosheet layer is attached to the toilet paper.
2. The method for preparing the MXene composite film with the directional fold structure of claim 1, comprising the following steps:
step one, preparing MXene dispersion liquid;
soaking the toilet paper, flatly paving the toilet paper on a filter membrane, carrying out suction filtration on the MXene dispersion liquid on the surface of the toilet paper by adopting a suction filtration method to form a membrane, and drying to obtain the MXene composite membrane with the directional fold structure.
3. The method of claim 2, wherein: in the first step, the preparation method of the MXene dispersion liquid comprises the following steps:
step 1, etching titanium aluminum carbide: preparing MXene by adopting a method of etching titanium aluminum carbide by hydrofluoric acid; taking the mass ratio of 1: 1.6-2 of Ti 3 AlC 2 Adding lithium fluoride into 6-9mol/L hydrochloric acid, fully stirring the hydrochloric acid and the lithium fluoride to obtain a mixed solution, slowly adding titanium aluminum carbide into the mixed solution, stirring, avoiding temperature change in the mixing process, and keeping the temperature of 35-50 ℃ for etching for 24-30 hours after all the titanium aluminum carbide is added to obtain a mixture;
step 2, collecting MXene dispersion liquid: and (3) centrifugally separating the mixture, washing the precipitate for multiple times until the pH value of the supernatant is greater than 6 after centrifugal separation, shaking the precipitate uniformly by using a vortex oscillator until the precipitate is completely dispersed in water after washing, and centrifugally separating to obtain the supernatant, namely MXene dispersion liquid.
4. The production method according to claim 3, characterized in that: in step 1, the time for fully stirring the lithium fluoride and the hydrochloric acid is at least 20 min.
5. The production method according to claim 3, characterized in that: in step 1, the time for adding each 1g of titanium aluminum carbide to the mixed solution is at least 10 min.
6. The production method according to claim 3, characterized in that: in the step 2, the rotating speed of the centrifuge is 3500rpm in each precipitate washing process, and the duration time is 5-10 min.
7. The production method according to claim 3, characterized in that: in the step 2, the rotation speed of the vortex oscillator is 1500-2000rpm, and the shaking time is 30-60 min.
8. The production method according to claim 3, characterized in that: in the step 2, when MXene dispersion liquid is collected, the rotation speed of the centrifuge is 1500-.
9. The method of claim 2, wherein: in the second step, the degree of vacuum of the vacuum pumping bottle is-0.1 Mpa.
10. The method of claim 2, wherein: in the second step, the drying temperature is room temperature, and the drying time is 4-8 h.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111372435A (en) * | 2020-04-25 | 2020-07-03 | 郑州大学 | MXene-based high-thermal-conductivity fireproof electromagnetic shielding composite film and preparation method thereof |
| CN113373728A (en) * | 2020-03-31 | 2021-09-10 | 中科院广州化学有限公司 | High-strength electromagnetic shielding and heat conducting ultrathin composite paper and preparation method and application thereof |
| CN113881105A (en) * | 2021-09-03 | 2022-01-04 | 哈尔滨工业大学（深圳） | MXene-based electromagnetic shielding film with porous foam structure and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113373728A (en) * | 2020-03-31 | 2021-09-10 | 中科院广州化学有限公司 | High-strength electromagnetic shielding and heat conducting ultrathin composite paper and preparation method and application thereof |
| CN111372435A (en) * | 2020-04-25 | 2020-07-03 | 郑州大学 | MXene-based high-thermal-conductivity fireproof electromagnetic shielding composite film and preparation method thereof |
| CN113881105A (en) * | 2021-09-03 | 2022-01-04 | 哈尔滨工业大学（深圳） | MXene-based electromagnetic shielding film with porous foam structure and preparation method thereof |
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