CN109496119A - Nanocomposite shielding film and preparation method thereof - Google Patents
Nanocomposite shielding film and preparation method thereof Download PDFInfo
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- CN109496119A CN109496119A CN201710821811.1A CN201710821811A CN109496119A CN 109496119 A CN109496119 A CN 109496119A CN 201710821811 A CN201710821811 A CN 201710821811A CN 109496119 A CN109496119 A CN 109496119A
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- nanocomposite
- shielding film
- mixed liquor
- slurries
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The present invention relates to nanocomposite shielding films and preparation method thereof.The present invention discloses a kind of nanocomposite shielding film and preparation method thereof applied to high-speed signal transmission.Using plastics (PET) or metal as substrate, it is coated with and is formed by the mixing of nano nonmetal material (including nano-sized carbon, carbon nanotube, graphene, graphite), metal material (iron, nickel, manganese, zinc etc.) and high molecular material thereon, and the slurries with close three-dimensional structure.Slurries hardenable formation film, as nanocomposite shielding film after drying.Nanocomposite shielding film provided by the invention, which has, promotes broadband (100K to 10GHz) signal quality and the excellent characteristics of noise suppressed.Meanwhile the nanocomposite shielding film also has the effect of slim light weight, intensity height and good conductive heat transfer.
Description
Technical field
The present invention relates to a kind of nanocomposite shielding films, are applied to high-speed signal transmission cable more particularly to one kind
And the nanocomposite shielding film of perimeter circuit, to cover the noise of electromagnetic interference and promote signal quality.
Background technique
In recent years, since the heat dissipation object of 3C Product, battery electrode and high conductivity thin film technique gradually mature, demand
It is cumulative, cause graphene and the cost of material of carbon nanotube to reduce, and then the raw material for developing graphene and carbon nanotube updates
The application of grain husk.Graphene and the more widely known application field of carbon nanotube include that functional fabric, sports equipment and electromagnetism are dry
Disturb masking (Electromagnetic shielding) material and field of biomedicine etc..Wherein, in electromagnetic interference masking material
The part of material, a small number of commercially available samples existing at present.
Existing masking material is the film being made with metal (copper, aluminium or iron) or its alloy or mesh grid plus ferrite
(ferrite) based on the compound of magnetic materials such as material (such as iron, manganese, zinc or nickel).However available screening in industry at present
Covering material is only two-dimension plane structure, can be only applied to the communication environment of low frequency (being less than 1GHz), can not be suitable for high-speed high frequency
Signal transmission system.The masking material of existing two-dimensional structure is limited to the inhibitory effect of electromagnetic interference, and for high frequency
Screening effect characteristic is insufficient.In general, for suitable for high speed network and optical-fibre communications high-speed interface (such as USB3.1,
DisplayPort 1.4, HDMI 2.0 and Thunderbolt etc.), nanoscale carbon series composite materials need to be used just to can reach
Noise mask and the matched requirement of signal.
Summary of the invention
Technical problem to be solved by the present invention lies in provide a kind of with 3 D stereo knot in view of the deficiencies of the prior art
The nanocomposite shielding film of structure is to strengthen screening effect, line crosstalk (cross talk) and signal is prevented to be distorted
(distortion) the phenomenon that, to promote signal quality.
In order to solve the above technical problems, the technical scheme adopted by the invention is that, a kind of nanocomposite is provided
The production method of shielding film comprising: by the carbon nanotube (Carbon nanotube, CNT) and graphene of predetermined ratio
(Graphene, GNE) is dissolved in the first organic solvent of base containing N, to form the first mixed liquor.In predetermined temperature, have fluorine-containing
Machine compound is dissolved in the second organic solvent of base containing N, to form the second mixed liquor.Iron powder will be contained, and to be dissolved in third base containing N organic
In solvent, to form third mixed liquor.Then, first mixed liquor, second mixed liquor and the third are mixed
Liquid phase is mutually mixed and stirred for the predetermined time, to form slurries.Finally, being coated with the slurries on substrate.
Preferably, the carbon nanotube and the predetermined ratio of the graphene are between 1:2 between 1:10.
Preferably, may further comprise: in the step of forming first mixed liquor and place first mixed liquor
In confined space and be heated to more than 100 DEG C so that the expansion of graphene and be softened, and penetrate into the carbon nanotube
The carbon atom framework with three-dimensional structure is formed in the graphene layer being softened.
Preferably, may further comprise: addition polyvinylpyrrolidone in the step of forming the slurries
In (Polyvinylpyrrolidone, PVP) Yu Suoshu slurries, using the dispersing agent as the slurries.
Preferably, may further comprise: that hardening has been coated in institute being coated with the slurries after the step on the substrate
The slurries on substrate are stated, to form the nanocomposite shielding film.
Preferably, the fluorinated organic compound account for the weight percent of the slurries between 0.1wt% to 10wt% it
Between, and the predetermined temperature is between 40 DEG C to 50 DEG C.
Preferably, described be selected from ferrite (ferrite), Fe containing iron powder2O3、Fe3O4Or combinations thereof.
Preferably, the substrate is plastics or metal.
Preferably, the nanocomposite shielding film has the carbon atom framework of three-dimensional structure.
In order to solve the above technical problems, it is multiple to be to provide a kind of nanometer for other technical solution of the present invention
Condensation material shielding film, the nanocomposite shielding film are formed on substrate.The nanocomposite shielding film includes phase
The carbon nanotube that mutually mixes, graphene, the organic solvent of base containing N, fluorinated organic compound and containing iron powder, and the nanometer is multiple
Condensation material shielding film has the carbon atom framework of stereochemical structure.
The beneficial effects of the present invention are nanocomposite shielding film and its production provided by technical solution of the present invention
Method, can by " carbon nanotube (CNT) of predetermined ratio and graphene (GNE) are dissolved in the first organic solvent of base containing N,
To form the first mixed liquor ", " in predetermined temperature, fluorinated organic compound is dissolved in the second organic solvent of base containing N, with shape
At the second mixed liquor ", " iron powder will be contained to be dissolved in the third organic solvent of base containing N, to form third mixed liquor " and " will be described
First mixed liquor, second mixed liquor and the third mixed liquor are mutually mixed and stirred for the predetermined time, to form slurries "
Technical characteristic, with formed have three-dimensional structure carbon atom framework nanocomposite shielding film, and then strengthen electricity
The screening effect of magnetic disturbance prevents the phenomenon that line crosstalk and signal distortion, effectively promotes signal quality.
Be further understood that feature and technology contents of the invention to be enabled, please refer to below in connection with it is of the invention specifically
Bright and attached drawing, however provided attached drawing is merely provided for reference and description, is not intended to limit the present invention.
Detailed description of the invention
Fig. 1 is the flow chart of the production method of the nanocomposite shielding film of the embodiment of the present invention.
Fig. 2 is the forming schematic diagram of the nanocomposite shielding film of the embodiment of the present invention.
Fig. 3 is the structural schematic diagram of the nanocomposite shielding film of the embodiment of the present invention.
Specific embodiment
Be below illustrated by particular specific embodiment it is presently disclosed it is related " nanocomposite shielding film and
The embodiment of its production method ", those skilled in the art can understand advantages of the present invention by content disclosed in this specification
With effect.The present invention can be implemented or be applied by other different specific embodiments, the various details in this specification
Various modifications and change can be carried out without departing from the spirit of the present invention based on different viewpoints and application.In addition, of the invention is attached
Figure is only simple schematically illustrate, not according to the description of actual size, states in advance.The following embodiments and the accompanying drawings will further specifically
Bright the relevant technologies content of the invention, but the protection scope that disclosure of that is not intended to limit the invention.
Refering to fig. 1 and Fig. 2, the embodiment of the present invention provides a kind of nanocomposite shielding film 2 and preparation method thereof.The party
Method includes the following steps:
Step S1: by the carbon nanotube (Carbon nanotube, CNT) of predetermined ratio and graphene (Graphene,
GNE it) is dissolved in the first organic solvent of base containing N, to form the first mixed liquor.
Step S2: in predetermined temperature, fluorinated organic compound being dissolved in the second organic solvent of base containing N, to form
Two mixed liquors.
Step S3: iron powder will be contained and be dissolved in the third organic solvent of base containing N, to form third mixed liquor.
Step S4: being mutually mixed and stirred for the predetermined time for the first mixed liquor, the second mixed liquor and third mixed liquor, with
Form slurries 2 '.
Step S5: it is coated on the 2 ' Yu Jicai 1 of slurries.
Detailed description are as follows, step S1 in the production method of nanocomposite shielding film 2 provided in an embodiment of the present invention,
Step S2 and step S3 is independent step, can not have ordinal relation each other.
It, below will be according to step numbers explanation above-mentioned for the present embodiment.Step S1 is first carried out, by carbon nanotube
(CNT) it is mixed with graphene (GNE) with predetermined ratio.Carbon nanotube: the predetermined ratio of graphene can be between 1:2 by weight extremely
Between 1:10, preferably 1:4.It is dissolved in the first organic solvent of base containing N after mixing, to form the first mixed liquor.
The organic solvent of base containing N of the invention be preferably N-Methyl pyrrolidone (1-Methyl-2-pyrrolidone,
NMP), molecular formula C5H9NO can be used as dissolution adhesive and for dispersed actives.In the present invention, N- methylpyrrole
Alkanone is as main solvent.
According to the present embodiment, carbon nanotube and graphene are added in the first N-Methyl pyrrolidone solvent to form first
Mixed liquor, while heating in confined space the first mixed liquor to more than 100 DEG C (step S101), preferably 110 DEG C.By adding
Heat, the graphene in the first mixed liquor, which can expand, to be strutted, in this way, which carbon nanotube is made to penetrate into the graphene hexagonal chain being softened
In structure, and then form the carbon atom framework (step S102) with three-dimensional structure.
On the other hand, it carries out step S2 and fluorinated organic compound is dissolved in the 2nd N- crassitude in predetermined temperature
In ketone (NMP) solvent, to form the second mixed liquor.The fluorinated organic compound of the present embodiment is polyvinylidene fluoride
(Polyvinylidene difluoride, PVDF) is a kind of non-reacted thermoplastic fluoropolymer of height, in this hair
It is bright middle as dielectric material, its electric polarization is made by predetermined temperature.Predetermined temperature can be 40 DEG C to 50 DEG C.It mixes at this temperature
The second mixed liquor have dielectric property and tackness.
Furthermore it is synchronous to carry out step S3, iron powder will be contained and be dissolved in third N-Methyl pyrrolidone solvent, to form third
Mixed liquor.It can be selected from ferrite (ferrite), Fe containing iron powder2O3、Fe3O4, iron cobalt nickel alloy or combinations thereof.In the present embodiment
In, it is selected from ferrite (ferrite), Fe containing iron powder2O3、Fe3O4And the combination of iron cobalt nickel alloy.Uniformly contain iron powder
It is mixed with third N-Methyl pyrrolidone (NMP), its wetting can be made.
Then mix the first mixed liquor obtained respectively from step S1, step S2 and step S3, the second mixed liquor with
And third mixed liquor, uniform stirring 4 to 6 hours, so that aforementioned mixed liquor is sufficiently mixed, to obtain slurries 2 ' (step S4).
In this step, aforementioned to be made by the addition of polyvinylidene fluoride (PVDF) adhesive agent containing iron powder through what is soaked containing iron powder
It end can be with uniform fold on the surface of carbon nanotube.
In addition to this, polyvinylpyrrolidone can be added in order to obtain the slurries 2 ' of mixing more evenly such as step S401
(Polyvinylpyrrolidone, PVP) using as dispersing agent, can make in slurries substance (for example, carbon nanotube, graphene,
Containing iron powder or a little carbon particle) it is uniformly dispersed.
Furthermore as described in step S5, slurries 2 ' are coated on substrate 1.Substrate 1 can be plastics or metal.Plastics can
Including polyethylene terephthalate (PET).In embodiments of the present invention, substrate 1 is polyethylene terephthalate.
Further, it can also be had been coated with to harden in the slurries 2 ' on substrate 1 by drying processing procedure, to be formed on substrate 1
Nanocomposite shielding film 2 (step S501).
It is noted that the total weight percent of slurries 2 ' shared by the polyvinylidene fluoride (PVDF) of the present embodiment can be situated between
In 0.1wt% between 10wt%, preferably 1wt%.
Referring to Fig. 3, the nanocomposite shielding film 2 completed through abovementioned steps, including the graphene being mutually mixed
201, carbon nanotube 202, contain iron powder 203, carbon particle 204, polyvinylidene fluoride (fluorinated organic compound) 205 and N- first
Base pyrrolidones (not shown), and the nanocomposite shielding film 2 has the carbon atom framework of three-dimensional structure.
In the present embodiment, the partial size containing iron powder 203 can be between 0.1nm between 5nm；The partial size of carbon particle 204 can
Less than 1nm.However the invention is not limited thereto.
Nanocomposite shielding film 2 of the invention can the (side z in vertical direction because of the carbon atom with stereochemical structure
To) there is the electronics orbital that can be linked to each other.So the plane hexangle type of the graphene 201 in nanocomposite shielding film 2
Structure can have multilayer.In detail, nanocomposite shielding film 2 of the present invention can have 3 to 30 layers of 201 structure of graphene,
And every layer of thickness is about 0.32nm.Generally speaking, nanocomposite shielding film 2 of the invention can be formed micro-
The three-dimensional structure of sight.
Nanocomposite shielding film 2 made by the present invention is tested, it can be because of tunneling effect (tunnel
Effect so that nanocomposite shielding film 2 is effectively absorbed the electromagnetic wave of high-frequency (being greater than 1GHz), and reflect more low
The electromagnetic wave of frequency.In this way, which nanocomposite shielding film 2 of the invention can be effective as the masking material of electromagnetic interference
Material, and then applied in the communication system of now widely used 2.4GHz and 5GHz.
The beneficial effect of embodiment
The beneficial effects of the present invention are nanocomposite shielding film 2 provided by technical solution of the present invention and its systems
Make method, it can be by " carbon nanotube of predetermined ratio and graphene being dissolved in the first organic solvent solution of base containing N, with shape
At the first mixed liquor ", " in predetermined temperature, fluorinated organic compound is dissolved in the second organic solvent solution of base containing N, with shape
At the second mixed liquor ", " iron powder will be contained to be dissolved in the third organic solvent solution of base containing N, to form third mixed liquor " and " will
First mixed liquor, the second mixed liquor and third mixed liquor are mutually mixed and stirred for the predetermined time, to form slurries 2 ' " technology
Feature to form the nanocomposite shielding film 2 of the carbon atom framework with stereochemical structure, and then strengthens the screening of electromagnetic interference
The phenomenon that covering effect, line crosstalk and signal is prevented to be distorted, effectively promotes signal quality.
Furthermore nanocomposite shielding film 2 provided by the invention, which has, promotes broadband (100K to 10GHz) signal quality
And the excellent characteristics of noise suppressed.Meanwhile the nanocomposite shielding film also has a light weight, intensity is high and good leads
The effect of fax heat.
Content disclosed above is only preferred possible embodiments of the invention, not thereby limits to right of the invention and wants
The protection scope of book is sought, so all equivalence techniques variations done with description of the invention and accompanying drawing content, are both contained in
In the protection scope of claims of the present invention.
Claims (10)
1. a kind of production method of nanocomposite shielding film, which is characterized in that the system of the nanocomposite shielding film
Include: as method
The carbon nanotube of predetermined ratio and graphene are dissolved in the first organic solvent of base containing N, to form the first mixed liquor；
In predetermined temperature, fluorinated organic compound is dissolved in the second organic solvent of base containing N, to form the second mixed liquor；
Iron powder will be contained to be dissolved in the third organic solvent of base containing N, to form third mixed liquor；
First mixed liquor, second mixed liquor and the third mixed liquor are mutually mixed and stirred for the predetermined time,
To form slurries；And
The slurries are coated on substrate.
2. the production method of nanocomposite shielding film according to claim 1, which is characterized in that the carbon nanotube
With the predetermined ratio of the graphene between 1:2 between 1:10.
3. the production method of nanocomposite shielding film according to claim 1, which is characterized in that forming described the
In the step of one mixed liquor, it may further comprise: and first mixed liquor is placed in confined space and is heated to more than 100
DEG C so that the expansion of graphene and be softened, and the carbon nanotube is made to penetrate into the graphene being softened and be formed
Carbon atom framework with three-dimensional structure.
4. the production method of nanocomposite shielding film according to claim 1, which is characterized in that forming the slurry
In the step of liquid, addition polyvinylpyrrolidone may further comprise: in the slurries, using the dispersion as the slurries
Agent.
5. the production method of nanocomposite shielding film according to claim 1, which is characterized in that be coated with the slurry
Liquid may further comprise: that hardening has been coated in the slurries on the substrate, to be formed after the step on the substrate
State nanocomposite shielding film.
6. the production method of nanocomposite shielding film according to claim 1, which is characterized in that described fluorine-containing organic
Compound accounts for the weight percent of the slurries between 0.1wt% between 10wt%, and the predetermined temperature between 40 DEG C extremely
Between 50 DEG C.
7. the production method of nanocomposite shielding film according to claim 1, which is characterized in that described to contain iron powder
Selected from ferrite, Fe2O3、Fe3O4, iron cobalt nickel alloy or combinations thereof.
8. the production method of nanocomposite shielding film according to claim 1, which is characterized in that the substrate is modeling
Material or metal.
9. the production method of nanocomposite shielding film according to claim 5, which is characterized in that described nano combined
Material shielding film has the carbon atom framework of three-dimensional structure.
10. a kind of nanocomposite shielding film, which is characterized in that the nanocomposite shielding film is formed on substrate,
Wherein, the nanocomposite shielding film includes the carbon nanotube being mutually mixed, graphene, the organic solvent of base containing N, fluorine-containing has
Machine compound and contain iron powder, and the nanocomposite shielding film have three-dimensional structure carbon atom framework.
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| CN201710821811.1A CN109496119A (en) | 2017-09-13 | 2017-09-13 | Nanocomposite shielding film and preparation method thereof |
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| CN201710821811.1A CN109496119A (en) | 2017-09-13 | 2017-09-13 | Nanocomposite shielding film and preparation method thereof |
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| JP2011054839A (en) * | 2009-09-03 | 2011-03-17 | Shinshu Univ | Electromagnetic wave-absorbing material consisting of ceramics-coating nano structure carbon fiber, and method of manufacturing the same |
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| CN103058172A (en) * | 2013-01-15 | 2013-04-24 | 清华大学 | Preparation method of carbon nanometer tube-graphene composite material |
| CN105858642A (en) * | 2015-01-22 | 2016-08-17 | 中国科学院上海应用物理研究所 | Porous graphene material, and preparation method and application thereof |
| CN106517159A (en) * | 2016-11-11 | 2017-03-22 | 苏州赛福德备贸易有限公司 | A preparing method of a composite nanometer carbon material |
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2017
- 2017-09-13 CN CN201710821811.1A patent/CN109496119A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011054839A (en) * | 2009-09-03 | 2011-03-17 | Shinshu Univ | Electromagnetic wave-absorbing material consisting of ceramics-coating nano structure carbon fiber, and method of manufacturing the same |
| CN101805491A (en) * | 2009-09-22 | 2010-08-18 | 龙海市奈特化工有限责任公司 | Composite material with electromagnetic shielding effect and preparation method thereof |
| CN102254584A (en) * | 2011-05-12 | 2011-11-23 | 中国科学院宁波材料技术与工程研究所 | General electronic paste based on graphene filler |
| CN103058172A (en) * | 2013-01-15 | 2013-04-24 | 清华大学 | Preparation method of carbon nanometer tube-graphene composite material |
| CN105858642A (en) * | 2015-01-22 | 2016-08-17 | 中国科学院上海应用物理研究所 | Porous graphene material, and preparation method and application thereof |
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