CN116026195A - MXene composite film flying piece and preparation method thereof - Google Patents
MXene composite film flying piece and preparation method thereof Download PDFInfo
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- CN116026195A CN116026195A CN202310191807.7A CN202310191807A CN116026195A CN 116026195 A CN116026195 A CN 116026195A CN 202310191807 A CN202310191807 A CN 202310191807A CN 116026195 A CN116026195 A CN 116026195A
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- 238000002360 preparation method Methods 0.000 title abstract description 9
- 239000011888 foil Substances 0.000 claims abstract description 47
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- 229920001721 polyimide Polymers 0.000 claims abstract description 39
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- 239000000758 substrate Substances 0.000 claims abstract description 22
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 35
- 229910052802 copper Inorganic materials 0.000 claims description 35
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- 238000000034 method Methods 0.000 claims description 26
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- VLDPXPPHXDGHEW-UHFFFAOYSA-N 1-chloro-2-dichlorophosphoryloxybenzene Chemical compound ClC1=CC=CC=C1OP(Cl)(Cl)=O VLDPXPPHXDGHEW-UHFFFAOYSA-N 0.000 claims description 21
- HLBLWEWZXPIGSM-UHFFFAOYSA-N 4-Aminophenyl ether Chemical compound C1=CC(N)=CC=C1OC1=CC=C(N)C=C1 HLBLWEWZXPIGSM-UHFFFAOYSA-N 0.000 claims description 21
- 238000004880 explosion Methods 0.000 claims description 21
- 238000004528 spin coating Methods 0.000 claims description 19
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 18
- 239000002041 carbon nanotube Substances 0.000 claims description 18
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 18
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- 125000000524 functional group Chemical group 0.000 claims description 8
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- 229910052799 carbon Inorganic materials 0.000 claims description 5
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Abstract
The invention discloses an MXene composite film flying piece and a preparation method thereof, comprising the following steps: polyimide with excellent comprehensive performance is used as a material substrate, a flaky MXene material and conductive nano fibers are used as additives, and the composite film is prepared to be used as a flyer of the exploding foil assembly. Through the synergistic effect of the one-dimensional and two-dimensional nano materials, the reflection and absorption of electromagnetic waves are realized, so that the composite film can be used as a flying piece structural member of the exploding foil assembly, and simultaneously, the electromagnetic protection function can be provided for the assembly.
Description
Technical Field
The invention belongs to the technical field of initiating explosive devices, and particularly relates to an MXene composite film flying piece and a preparation method thereof.
Background
The impact sheet detonator, also known as an in-line detonation system, comprises a pulse power unit and an exploding foil assembly. The pulse power unit mainly comprises a control circuit, a boosting module, a high-voltage capacitor, a high-voltage switch and the like, and is used for providing energy required by metal electric explosion for the exploding foil initiator unit. The explosion foil assembly mainly comprises a back plate, an explosion foil, a flyer, an accelerating chamber and insensitive charge, wherein plasma generated by metal electric explosion rapidly expands and shears the flyer, the flyer reaches the speed of thousands of meters per second through the accelerating chamber, the explosive is impacted, and the explosive detonation is initiated when the detonation threshold value of the impact sheet is exceeded.
With the rapid development of high power, high density and high integration of electronic and communication equipment, problems such as electromagnetic radiation, electromagnetic interference and information leakage caused by electromagnetic waves are increasingly serious. In order to ensure the operation reliability and information safety of the precise components and parts and to protect the health of human bodies, various materials with electromagnetic shielding performance are needed. Metallic materials are widely used as electromagnetic shielding materials due to their high electrical conductivity and high electromagnetic shielding effectiveness, but their high density, low flexibility, etc. have severely limited applications in some particular fields.
MXene is a two-dimensional transition metal carbide or nitride with a graphene-like structure, has excellent conductivity and excellent electromagnetic shielding performance, and is increasingly widely applied to super capacitors, batteries, electromagnetic shielding, composite materials and the like. But the mechanical properties of the MXene material are relatively poor, and the MXene material is usually required to be compounded with other materials to meet the requirements of a use scene.
Disclosure of Invention
It is an object of the present invention to address at least the above problems and/or disadvantages and to provide at least the advantages described below.
To achieve these objects and other advantages and in accordance with the purpose of the invention, there is provided an MXene composite film flyer having polyimide as a material substrate, a sheet-like MXene material and conductive nanofibers as dopants, and a flyer structure as an exploding foil assembly.
Preferably, the structure of the exploding foil assembly using the MXene composite film flyer as the flyer structure includes:
a substrate on which a copper film is deposited, wherein the copper film is subjected to photoetching patterning to form a copper explosion foil pattern array;
a polyimide insulating layer deposited over the copper exploding foil pattern array;
a composite film deposited on the polyimide insulating layer; the upper surface of the composite film is manufactured into an accelerating chamber through a photoetching process, and then scribing is carried out, or the accelerating chamber is firstly scribed and then stuck.
Preferably, the substrate is a square or round alumina ceramic piece, and the thickness of the substrate is 0.5-2 mm.
Preferably, the preparation method of the copper exploding foil graphic array comprises the following steps: and depositing a copper film on the substrate by adopting an evaporation or magnetron sputtering method as a transduction element, etching the copper film by adopting a photoetching process, and preparing a copper explosion foil pattern array to form an explosion foil pad area and an explosion foil bridge area, wherein the thickness of the copper film is 1-10 microns.
Preferably, the polyimide insulating layer is deposited on the copper explosion foil pattern array by adopting a liquid phase spin coating or chemical vapor deposition method, and the thickness of the polyimide insulating layer is 1-50 micrometers; polyimide in the polyimide insulating layer is synthesized by heating and dehydrating pyromellitic dianhydride and 4,4 '-diaminodiphenyl ether serving as precursor synthesis raw materials, wherein the dosage molar ratio of the pyromellitic dianhydride to the 4,4' -diaminodiphenyl ether is 1.01:1.
A preparation method of an MXene composite film flyer comprises the following steps: and depositing a composite film on the polyimide insulating layer in a mode of combining spin coating and thermal imidization, wherein the thickness of the composite film is 1-50 microns.
Preferably, the substrate material of the spin coating liquid in the composite film is a polyamic acid solution, wherein the polyamic acid solution is synthesized by adopting pyromellitic dianhydride and 4,4 '-diaminodiphenyl ether as precursors, and the dosage mole ratio of the pyromellitic dianhydride to the 4,4' -diaminodiphenyl ether is 1.01:1.
Preferably, the dopant in the composite film includes: the first component is an MXene material, and the general formula of the MXene material is M n+1 X n T x Wherein n=1-3, m is one of the transition metals Sc, ti, V, cr, mn, zr, nb, mo, hf, ta, W; x is carbon and/or nitrogen; t (T) x Represents a functional group, which is one or more of-OH, -O, -F and-Cl;
the second component is one or two of carbon nanotubes and silver nanowires, wherein the carbon nanotubes are single-wall carbon nanotubes or multi-wall carbon nanotubes and corresponding carboxylated and hydroxylated derivatives; the diameter of the silver nanowire is 1-300 nanometers, and the length is 1-50 micrometers;
in the first component and the second component dopant, the mass of the first component MXene material accounts for 10-95% of the total mass of the dopant;
the proportion of the dopant in the total mass of the composite film is 10-90%.
Preferably, the doping method of the dopant in the composite film comprises the following steps: respectively ultrasonically dispersing MXene powder, a carbon nano tube and/or silver nano wires into N, N-dimethylacetamide or N-methylpyrrolidone solution, and then mixing the two components by ultrasonic treatment to uniformly mix the two components to obtain mixed dispersion liquid; under the condition of room temperature, respectively adding pyromellitic dianhydride and 4,4 '-diaminodiphenyl ether into N, N-dimethylacetamide or N-methylpyrrolidone solution, mechanically stirring, carrying out condensation reaction on the pyromellitic dianhydride and the 4,4' -diaminodiphenyl ether to obtain a polyamic acid solution, and fully mixing the polyamic acid solution and the mixed dispersion liquid through ultrasonic and mechanical stirring to obtain a doped polyamic acid solution; the doped polyamic acid solution is used as spin coating liquid to prepare the composite film.
Preferably, the accelerating cavities are manufactured into the accelerating cavity array by adopting a photoetching process and then diced, or the accelerating cavities are stuck on the composite film by adopting a sticking mode; the photoetching process uses SU8 photoresist to manufacture an acceleration chamber with the thickness of 200-800 micrometers, the acceleration chamber is a round hole, the aperture of the round hole is 200-1200 micrometers, and the acceleration chamber round hole is positioned right above the explosion foil bridge area.
The invention at least comprises the following beneficial effects: the invention takes polyimide with excellent comprehensive performance as a material substrate, takes flaky MXene material and conductive nano fiber as additives, and prepares the composite film as a flying piece of the exploding foil assembly. Through the synergistic effect of the one-dimensional and two-dimensional nano materials, the reflection and absorption of electromagnetic waves are realized, so that the composite film can be used as a flying piece structural member of the exploding foil assembly, and simultaneously, the electromagnetic protection function can be provided for the assembly.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is a schematic cross-sectional structure of an exploding foil assembly using the composite film of example 1 as a flyer structure.
Detailed Description
The present invention is described in further detail below with reference to the drawings to enable those skilled in the art to practice the invention by referring to the description.
It will be understood that terms, such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
Example 1
FIG. 1 shows an exploding foil assembly using an MXene composite film as a flyer structure, the structure comprising:
the substrate 1 is a square alumina ceramic wafer, the thickness of the substrate is 0.5 millimeter, a copper film is deposited on the substrate 1 by adopting an evaporation method to serve as a transduction element, the thickness of the copper film is 1 micrometer, and the copper film is subjected to photoetching patterning to form a copper exploding foil pattern array 2 to form an exploding foil bonding pad area and an exploding foil bridge area;
a polyimide insulating layer 3 which is deposited on the copper explosion foil pattern array 2 in a liquid phase spin coating mode, wherein the thickness of the polyimide insulating layer is 1 micron, polyimide in the polyimide insulating layer 3 is synthesized into polyamic acid by adopting pyromellitic dianhydride and 4,4' -diaminodiphenyl ether as precursors, and then the polyimide is obtained by heating and dehydrating;
a composite film 4 deposited on the polyimide insulating layer 3 by spin coating combined with thermal imidization, the thickness of the composite film being 1 μm; the upper surface of the composite film 4 is manufactured into an accelerating chamber 5 through a photoetching process, then scribing is carried out, the accelerating chamber 5 with the thickness of 200 microns is manufactured through SU8 photoresist through the photoetching process, the accelerating chamber 5 is a round hole, the aperture of the round hole is 200 microns, and the round hole of the accelerating chamber is positioned right above an explosion foil bridge area;
the preparation method of the composite film flying piece comprises the following steps: respectively ultrasonically dispersing MXene powder, a carbon nano tube and a silver nano wire into an N, N-dimethylacetamide solution, and then mixing the two components uniformly by ultrasonic treatment to obtain a mixed dispersion liquid, wherein the proportion of the MXene powder to the total mass of the dopant (the MXene powder, the carbon nano tube and the silver nano wire) is 10%; the general formula of the MXene material is Ti n+1 C n T x ，T x Representing a functional group, wherein the MXene material is prepared from MAX phase powder by an acid etching method; the carbon nanotubes are single-walled carbon nanotubes; the diameter of the silver nanowire is 1 nanometer, and the length is 1 micrometer; wherein n=1, m is a transition metal Sc; x is carbon; t (T) x Represents a functional group, namely-OH;
under the condition of room temperature, respectively adding pyromellitic dianhydride and 4,4 '-diaminodiphenyl ether into N, N-dimethylacetamide solution, mechanically stirring, carrying out condensation reaction on the pyromellitic dianhydride and the 4,4' -diaminodiphenyl ether to obtain polyamic acid solution, and fully mixing the polyamic acid solution and the mixed dispersion liquid through ultrasonic and mechanical stirring to obtain doped polyamic acid solution;
and (3) using a doped polyamic acid solution as a spin coating solution, and depositing a composite film on the polyimide insulating layer in a spin coating and thermal imidization combined mode, wherein the mass of the dopant (MXene powder, carbon nano tubes and silver nano wires) accounts for 10% of the total mass of the composite film.
Example 2
The structure of an exploding foil assembly using an MXene composite film as a flyer structure provided in this embodiment is the same as that of embodiment 1, namely, includes:
the substrate 1 is a square alumina ceramic wafer, the thickness of the substrate is 1 millimeter, a copper film is deposited on the substrate 1 by adopting an evaporation method to serve as a transduction element, the thickness of the copper film is 5 microns, and the copper film is subjected to photoetching patterning to form a copper exploding foil pattern array 2 to form an exploding foil bonding pad area and an exploding foil bridge area;
a polyimide insulating layer 3 which is deposited on the copper explosion foil pattern array 2 in a liquid phase spin coating mode, wherein the thickness of the polyimide insulating layer is 25 micrometers, polyimide in the polyimide insulating layer 3 is synthesized into polyamic acid by adopting pyromellitic dianhydride and 4,4' -diaminodiphenyl ether as precursors, and then the polyimide is obtained by heating and dehydrating;
a composite film 4 deposited on the polyimide insulating layer 3 by spin coating combined with thermal imidization, the thickness of the composite film being 25 micrometers; the upper surface of the composite film 4 is manufactured into an accelerating chamber 5 through a photoetching process, then scribing is carried out, the accelerating chamber 5 with the thickness of 500 microns is manufactured through SU8 photoresist through the photoetching process, the accelerating chamber 5 is a round hole, the aperture of the round hole is 700 microns, and the round hole of the accelerating chamber is positioned right above an explosion foil bridge area;
the preparation method of the composite film flying piece comprises the following steps: respectively ultrasonically dispersing MXene powder, a carbon nano tube and a silver nano wire into an N, N-dimethylacetamide solution, and then mixing the two components uniformly by ultrasonic treatment to obtain a mixed dispersion liquid, wherein the proportion of the MXene powder to the total mass of the dopant (the MXene powder, the carbon nano tube and the silver nano wire) is 50 percent; the general formula of the MXene material is Ti n+1 C n T x ，T x Representing a functional group, wherein the MXene material is prepared from MAX phase powder by an acid etching method; the carbon nanotubes are single-walled carbon nanotubes; the diameter of the silver nanowire is 150 nanometers, and the length is 25 micrometers; wherein n=2, m is a transition metal Sc; x is carbon; t (T) x Represents a functional group, which is-OH；
Under the condition of room temperature, respectively adding pyromellitic dianhydride and 4,4 '-diaminodiphenyl ether into N, N-dimethylacetamide solution, mechanically stirring, carrying out condensation reaction on the pyromellitic dianhydride and the 4,4' -diaminodiphenyl ether to obtain polyamic acid solution, and fully mixing the polyamic acid solution and the mixed dispersion liquid through ultrasonic and mechanical stirring to obtain doped polyamic acid solution;
and (3) using a doped polyamic acid solution as a spin coating solution, and depositing a composite film on the polyimide insulating layer in a spin coating and thermal imidization combined mode, wherein the mass of the dopant (MXene powder, carbon nano tubes and silver nano wires) accounts for 50% of the total mass of the composite film.
Example 3
The structure of an exploding foil assembly using an MXene composite film as a flyer structure provided in this embodiment is the same as that of embodiment 1, namely, includes:
the substrate 1 is a circular alumina ceramic wafer, the thickness of the substrate is 2 mm, a copper film is deposited on the substrate 1 by a magnetron sputtering method to serve as a transduction element, the thickness of the copper film is 10 microns, and a copper exploding foil pattern array 2 is formed on the copper film through photoetching patterning to form an exploding foil bonding pad area and an exploding foil bridge area;
a polyimide insulating layer 3 which is deposited on the copper explosion foil pattern array 2 in a chemical vapor deposition mode, wherein the thickness of the polyimide insulating layer is 50 micrometers, polyimide in the polyimide insulating layer 3 is synthesized into polyamic acid by adopting pyromellitic dianhydride and 4,4' -diaminodiphenyl ether as precursors, and then the polyimide is obtained by heating and dehydrating;
a composite film 4 deposited on the polyimide insulating layer 3 by spin coating combined with thermal imidization, the thickness of the composite film being 50 μm; the thickness of the accelerating chamber 5 of the upper surface of the composite film 4 is 800 micrometers by pasting the accelerating chamber 5, the accelerating chamber 5 is a round hole, the aperture of the round hole is 1200 micrometers, and the accelerating chamber round hole is positioned right above the explosion foil bridge area;
the preparation method of the composite film flying piece comprises the following steps: respectively ultrasonically dispersing MXene powder, carbon nano tube and silver nano wireAdding the mixture into N-methylpyrrolidone solution, mixing ultrasonic waves, and uniformly mixing the two components to obtain mixed dispersion liquid, wherein the proportion of MXene powder to the total mass of the dopant (MXene powder, carbon nano tube and silver nano wire) is 95%; the general formula of the MXene material is Ti n+1 C n T x ，T x Representing a functional group, wherein the MXene material is prepared from MAX phase powder by an acid etching method; the carbon nanotubes are single-walled carbon nanotubes; the silver nanowire has a diameter of 300 nanometers and a length of 50 micrometers; wherein n=3, m is a transition metal Sc; x is carbon; t (T) x Represents a functional group, namely-OH;
under the condition of room temperature, respectively adding pyromellitic dianhydride and 4,4 '-diaminodiphenyl ether into N-methyl pyrrolidone solution, mechanically stirring, carrying out condensation reaction on the pyromellitic dianhydride and the 4,4' -diaminodiphenyl ether to obtain polyamic acid solution, and fully mixing the polyamic acid solution and the mixed dispersion liquid through ultrasonic and mechanical stirring to obtain doped polyamic acid solution;
and (3) using a doped polyamic acid solution as a spin coating solution, and depositing a composite film on the polyimide insulating layer in a spin coating and thermal imidization combined mode, wherein the mass of the dopant (MXene powder, carbon nano tubes and silver nano wires) accounts for 90% of the total mass of the composite film.
The number of equipment and the scale of processing described herein are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be readily apparent to those skilled in the art.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the invention would be readily apparent to those skilled in the art, and accordingly, the invention is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (10)
1. The MXene composite film flyer is characterized in that polyimide is used as a material substrate, sheet-shaped MXene material and conductive nano fibers are used as dopants to prepare a composite film, and the composite film is used as a flyer structure of an exploding foil assembly.
2. The MXene composite film flyer of claim 1, wherein the structure of the exploding foil assembly using it as a flyer structure comprises:
a substrate on which a copper film is deposited, wherein the copper film is subjected to photoetching patterning to form a copper explosion foil pattern array;
a polyimide insulating layer deposited over the copper exploding foil pattern array;
a composite film deposited on the polyimide insulating layer; the upper surface of the composite film is manufactured into an accelerating chamber through a photoetching process, and then scribing is carried out, or the accelerating chamber is firstly scribed and then stuck.
3. The MXene composite film fly-sheet of claim 2, wherein the substrate is a square or round alumina ceramic sheet, the thickness of the substrate being 0.5-2 mm.
4. The MXene composite film fly-sheet of claim 2, wherein said method of preparing a copper exploding foil graphic array comprises: and depositing a copper film on the substrate by adopting an evaporation or magnetron sputtering method as a transduction element, etching the copper film by adopting a photoetching process, and preparing a copper explosion foil pattern array to form an explosion foil pad area and an explosion foil bridge area, wherein the thickness of the copper film is 1-10 microns.
5. The MXene composite film fly sheet of claim 2, wherein said polyimide insulating layer is deposited on said copper detonation foil pattern array by liquid phase spin coating or chemical vapor deposition, said polyimide insulating layer having a thickness of 1-50 microns; polyimide in the polyimide insulating layer is synthesized by heating and dehydrating pyromellitic dianhydride and 4,4 '-diaminodiphenyl ether serving as precursor synthesis raw materials, wherein the dosage molar ratio of the pyromellitic dianhydride to the 4,4' -diaminodiphenyl ether is 1.01:1.
6. A method for producing a fly sheet of an MXene composite film according to any one of claims 1 to 5, characterized in that a composite film is deposited on a polyimide insulating layer by spin coating in combination with thermal imidization, the thickness of the composite film being 1 to 50 μm.
7. The method for preparing a fly sheet of an MXene composite film according to claim 6, wherein the spin coating liquid in the composite film is a polyamic acid solution, the polyamic acid solution is synthesized by adopting pyromellitic dianhydride and 4,4 '-diaminodiphenyl ether as precursors, and the dosage mole ratio of the pyromellitic dianhydride to the 4,4' -diaminodiphenyl ether is 1.01:1.
8. The method of producing a fly-sheet of MXene composite film of claim 6, wherein the dopant in the composite film comprises: the first component is an MXene material, and the general formula of the MXene material is M n+1 X n T x Wherein n=1-3, m is one of the transition metals Sc, ti, V, cr, mn, zr, nb, mo, hf, ta, W; x is carbon and/or nitrogen; t (T) x Represents a functional group, which is one or more of-OH, -O, -F and-Cl; the MXene material is prepared by adopting MAX phase powder through an acid etching method;
the second component is one or two of carbon nanotubes and silver nanowires, wherein the carbon nanotubes are single-wall carbon nanotubes or multi-wall carbon nanotubes and corresponding carboxylated and hydroxylated derivatives; the diameter of the silver nanowire is 1-300 nanometers, and the length is 1-50 micrometers;
in the first component and the second component dopant, the mass of the first component MXene material accounts for 10-95% of the total mass of the dopant;
the proportion of the dopant in the total mass of the composite film is 10-90%.
9. The method for preparing a fly sheet of an MXene composite film according to claim 8, characterized in that the doping method of the dopant in the composite film comprises: respectively ultrasonically dispersing MXene powder, a carbon nano tube and/or silver nano wires into N, N-dimethylacetamide or N-methylpyrrolidone solution, and then mixing the two components by ultrasonic treatment to uniformly mix the two components to obtain mixed dispersion liquid; under the condition of room temperature, respectively adding pyromellitic dianhydride and 4,4 '-diaminodiphenyl ether into N, N-dimethylacetamide or N-methylpyrrolidone solution, mechanically stirring, carrying out condensation reaction on the pyromellitic dianhydride and the 4,4' -diaminodiphenyl ether to obtain a polyamic acid solution, and fully mixing the polyamic acid solution and the mixed dispersion liquid through ultrasonic and mechanical stirring to obtain a doped polyamic acid solution; the doped polyamic acid solution is used as spin coating liquid to prepare the composite film.
10. The MXene composite film fly sheet of claim 2, wherein the accelerated chambers are diced after being manufactured into an accelerated chamber array by adopting a photoetching process, or the accelerated chambers are stuck on the composite film by adopting a sticking mode; the photoetching process uses SU8 photoresist to manufacture an acceleration chamber with the thickness of 200-800 micrometers, the acceleration chamber is a round hole, the aperture of the round hole is 200-1200 micrometers, and the acceleration chamber round hole is positioned right above the explosion foil bridge area.
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| Publication number | Priority date | Publication date | Assignee | Title |
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