CN109208322A - A kind of electromagnetic shielding non-woven fabrics and preparation method thereof and a kind of electromagnetic shielding wall - Google Patents
A kind of electromagnetic shielding non-woven fabrics and preparation method thereof and a kind of electromagnetic shielding wall Download PDFInfo
- Publication number
- CN109208322A CN109208322A CN201811020549.1A CN201811020549A CN109208322A CN 109208322 A CN109208322 A CN 109208322A CN 201811020549 A CN201811020549 A CN 201811020549A CN 109208322 A CN109208322 A CN 109208322A
- Authority
- CN
- China
- Prior art keywords
- carbon nanotube
- woven fabrics
- electromagnetic shielding
- preparation
- dispersion liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/49—Oxides or hydroxides of elements of Groups 8, 9, 10 or 18 of the Periodic System; Ferrates; Cobaltates; Nickelates; Ruthenates; Osmates; Rhodates; Iridates; Palladates; Platinates
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/68—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with phosphorus or compounds thereof, e.g. with chlorophosphonic acid or salts thereof
- D06M11/70—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with phosphorus or compounds thereof, e.g. with chlorophosphonic acid or salts thereof with oxides of phosphorus; with hypophosphorous, phosphorous or phosphoric acids or their salts
- D06M11/71—Salts of phosphoric acids
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/73—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof
- D06M11/74—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof with carbon or graphite; with carbides; with graphitic acids or their salts
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/83—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with metals; with metal-generating compounds, e.g. metal carbonyls; Reduction of metal compounds on textiles
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/184—Carboxylic acids; Anhydrides, halides or salts thereof
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
-
- 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
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/30—Flame or heat resistance, fire retardancy properties
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B2001/925—Protection against harmful electro-magnetic or radio-active radiations, e.g. X-rays
Abstract
The present invention provides a kind of electromagnetic shielding non-woven fabrics and preparation method thereof, the electromagnetic shielding non-woven fabrics, it is prepared by the raw material for including carbon nanotube, hydroxyapatite overlong nanowire and magnetic medium, the carbon nanotube and hydroxyapatite overlong nanowire form the cloth-like thing with network structure, and the magnetic medium is filled in the network structure of the cloth-like thing.Electromagnetic shielding non-woven fabrics provided by the invention has bio-compatibility, can accomplish pollution-free or even no pollution compared to traditional electromagnetic shielding material；Also, the electromagnetism non-woven fabrics has good strength and toughness.Embodiment the result shows that, the present invention be prepared electromagnetic shielding non-woven fabrics intensity be 30~50Mpa, reach 40~50dB in 30~1500MHz frequency range electromagnet shield effect.The present invention also provides another kinds using above-mentioned electromagnetic shielding non-woven fabrics as the electromagnetic shielding wall of middle shield.
Description
Technical field
The invention belongs to technical field of function materials, in particular to a kind of electromagnetic shielding non-woven fabrics and preparation method thereof and one
Kind electromagnetic shielding wall.
Background technique
With the development of modern war informationization, Electromagnetic Interference is carried out to enemy and is become increasingly prevalent.Electromagnetic wave is dry
Technology is disturbed, operation communication apparatus can be made to be interfered, or even can not work normally.This to the accurate delivery of one's own side's operational instruction and
Reception will also result in very big influence, or even can determine the victory or defeat of a campaign.In order to reduce one's own side from the interference of electromagnetic wave,
Carrying out electromagnetic shielding protection using electromagnetic shielding material is most effective means in field operation.
Electromagnetic shielding protection is mainly reflected and is absorbed to electromagnetic wave using certain materials or structure, traditional electromagnetism
Shielding material mainly has metal and alloy of high conductivity etc..And merely using the metal of high conductivity, alloy as shielding material
Material, will be significantly increased the cost of shield, meanwhile, surface also be easy to cause secondary electromagnetic pollution to the reflection of electromagnetic wave.And
And existing electromagnetic shielding material is still difficult to reach to electromagnetic shielding performance that field operation electromagnetic shielding is required shields to greatest extent
Electromagnetic wave, and the requirement of good obdurability.
Summary of the invention
In view of this, it is an object of that present invention to provide kind of electromagnetic shielding non-woven fabrics and preparation method thereof and a kind of electromagnetic shieldings
Wall, electromagnetic shielding non-woven fabrics provided by the invention have bio-compatibility, reduce secondary electromagnetic pollution；Have simultaneously good
Obdurability, electromagnetic shielding performance are excellent.
In order to achieve the above-mentioned object of the invention, the present invention the following technical schemes are provided:
The present invention provides a kind of preparation methods for being electromagnetically shielded non-woven fabrics, comprising the following steps:
(1) carbon nano tube dispersion liquid and magnetic medium are mixed, the magnetic medium obtained-carbon nanotube composite dispersion liquid；
(2) magnetic medium-carbon nanotube composite dispersion liquid and hydroxyapatite overlong nanowire are mixed, is obtained
Compound suspension；
(3) the compound suspension is filtered by vacuum, solid component in compound suspension is made to deposit to suction filtration substrate
On, deposit is obtained into electromagnetism non-woven fabrics presoma after suction filtration substrate surface removing；
(4) the electromagnetism non-woven fabrics presoma is successively dried and roll-in, obtains electromagnetic shielding non-woven fabrics.
Preferably, the preparation method of carbon nano tube dispersion liquid includes: using organic solvent by carbon nanometer in the step (1)
After pipe wetting, gained is soaked into carbon nanotube, dispersing agent and water and is mixed, carbon nano tube dispersion liquid is obtained；The carbon nanotube and
The mass ratio of organic solvent is 1:(5~15)；The mass ratio of carbon nanotube and water is 1:(150 in the carbon nano tube dispersion liquid
~250)；The mass ratio of carbon nanotube and dispersing agent is 1:(0.05~0.1 in the carbon nano tube dispersion liquid).
Preferably, magnetic medium includes one of ferrite, carboxyl iron and elemental metals or a variety of in the step (1),
The mass ratio of carbon nanotube is 1:(10~20 in the magnetic medium and carbon nano tube dispersion liquid)；The elemental metals include silver,
One of copper and iron are a variety of.
Preferably, the elemental metals are elemental metals powder, and partial size is 50~400nm.
Preferably, carbon nanotube and hydroxyapatite are super in magnetic medium-carbon nanotube composite dispersion liquid in the step (2)
The mass ratio of long nano wire is (3~7): (7~3)；The diameter of the hydroxyapatite overlong nanowire is 5~100nm, length
It is 30~1200 μm.
Preferably, the mode mixed in the step (2) is shear-mixed；The time of the shear-mixed be 30~
60min, the revolving speed of shear-mixed are 1800~2500r/min.
Preferably, temperature dry in the step (4) is 60~85 DEG C, the time is 12~for 24 hours.
The present invention provides preparation method described in above scheme preparation electromagnetic shielding non-woven fabrics, by include carbon nanotube,
The raw material of hydroxyapatite overlong nanowire and magnetic medium is prepared, the carbon nanotube and hydroxyapatite overlong nanowire
The cloth-like thing with network structure is formed, the magnetic medium is filled in the network structure of the cloth-like thing.
The present invention provides a kind of electromagnetic shielding wall, including outer layer rain-proof cover, middle shield and internal layer decorative layer, institutes
Middle shield electromagnetic shielding non-woven fabrics described in above-mentioned technical proposal is stated to form.
Preferably, the thickness ratio of the outer layer rain-proof cover, middle shield and internal layer decorative layer is (1~3): (1~3):
(1~3).
The present invention provides a kind of preparation methods for being electromagnetically shielded non-woven fabrics, firstly, carbon nano tube dispersion liquid and magnetic are situated between
Matter mixing, the magnetic medium obtained-carbon nanotube composite dispersion liquid；Again by magnetic medium-carbon nanotube composite dispersion liquid and hydroxy-apatite
Stone overlong nanowire is mixed, and compound suspension is obtained；Then, which is filtered by vacuum, is made compound outstanding
Solid component deposits on filter paper in turbid, and deposit is obtained electromagnetism non-woven fabrics forerunner after suction filtration substrate surface removing
Body；Then, presoma is successively dried and roll-in, obtains electromagnetic shielding non-woven fabrics.
Electromagnetic shielding non-woven fabrics provided by the invention has bio-compatibility compared to traditional electromagnetic shielding material,
Internal carbon nanotube will form conductive network framework, and after electromagnetic wave incident, material internal occurs polarization and generates vortex,
With the increase of frequency, current distribution is collected to material surface, causes skin effect.When skin effect increases, eddy-current loss
It increases with it, makes electromagnetic energy thermal energy and be lost, there is no the surfaces pair of the metal of high conductivity, alloy type shielding material
Secondary electromagnetic pollution caused by the reflection of electromagnetic wave, can accomplish pollution-free or even no pollution；Also, hydroxyapatite overlength
Nano wire and carbon nanotube are all fibrous structure, when non-woven fabrics is made, three dimensional skeletal structure can be overlapped to form well, in nonwoven
Composition shielding network, has good shield effectiveness in cloth；Institute's nanofiber mutually overlaps simultaneously, the three-dimensional network knot of formation
Structure, help to improve the electromagnetism non-woven fabrics has good strength and toughness.Embodiment the result shows that, the present invention is prepared
Electromagnetic shielding non-woven fabrics intensity is 30~50Mpa, reaches 40~50dB in 30~1500MHz frequency range electromagnet shield effect；And it sends out
The electromagnetic wave for being mapped to nonwoven surface can be completely absorbed, without secondary electromagnetic pollution.
Detailed description of the invention
Fig. 1 is that carbon nanotube of the invention-hydroxyapatite is electromagnetically shielded room wall the schematic diagram of the section structure；
Wherein, 1- internal layer decorative layer, 2- middle shield, 3- outer layer rain-proof cover.
Specific embodiment
The present invention provides a kind of preparation methods for being electromagnetically shielded non-woven fabrics, comprising the following steps:
(1) carbon nano tube dispersion liquid and magnetic medium are mixed, the magnetic medium obtained-carbon nanotube composite dispersion liquid；
(2) magnetic medium-carbon nanotube composite dispersion liquid and hydroxyapatite overlong nanowire are mixed, is obtained
Compound suspension；
(3) the compound suspension is coated in substrate, is filtered by vacuum, keep solid component in compound suspension heavy
Product obtains electromagnetism non-woven fabrics presoma after suction filtration substrate surface removing to filtering in substrate, by deposit；
(4) the electromagnetism non-woven fabrics presoma is successively dried and roll-in, obtains electromagnetic shielding non-woven fabrics.
The present invention mixes carbon nano tube dispersion liquid and magnetic medium, obtains magnetic medium-carbon nanotube composite dispersion liquid.At this
In invention, the preparation method of the carbon nano tube dispersion liquid is preferably included: after being soaked carbon nanotube using organic solvent, by institute
Carbon nanotube, dispersing agent and water mixing must be soaked, carbon nano tube dispersion liquid is obtained.
The present invention is soaked carbon nanotube using organic solvent, obtains wetting carbon nanotube；The present invention preferably has described
Solvent is added drop-wise in carbon nanotube, realizes the wetting to carbon nanotube.In the present invention, the organic solvent is preferably acetone
And/or ethyl alcohol；In the present invention, carbon nanotube is preferably crystal whisker-shaped multi-walled carbon nanotube in the carbon nano tube dispersion liquid；Institute
The diameter for stating carbon nanotube is preferably 30~150nm, further preferably 35~100nm, more preferably 40~80nm；The carbon
The length of nanotube is preferably 5~10 μm, and further preferably 6~9.5 μm；The purity of the carbon nanotube preferably 95% with
On.The present invention controls the specification of carbon nanotube, convenient for forming three-dimensional net structure with hydroxyapatite overlong nanowire, into
And help to improve the obdurability and electromagnetic shielding performance of non-woven fabrics.In the present invention, the organic solvent and carbon nanotube
Mass ratio is preferably 1:(5~15), further preferably 1:(8~12).
After obtaining wetting carbon nanotube, the wetting carbon nanotube is dispersed in water by the present invention with dispersing agent, obtains carbon
Nanotube dispersion liquid.
In the present invention, carbon nanotube in the carbon nano tube dispersion liquid is not (to soak the carbon nanotube of organic solvent
Quality meter) and the mass ratio of water be preferably 1:(150~250), further preferably 1:(180~245), more preferably 1:(200
~220).In the present invention, the dispersing agent is preferably lauryl sodium sulfate (SDS), polyvinylpyrrolidone (PVP) and ten
One or more of dialkyl sulfonates (SDBS)；The mass ratio of carbon nanotube and dispersing agent in the carbon nano tube dispersion liquid
For 1:(0.05~0.1), further preferably 1:(0.06~0.1).In the present invention, the mode of the dispersion include successively into
Capable ultrasonic disperse and shear-mixed；The time of the ultrasound is preferably 1~3h；The power of the ultrasound is preferably 50~
150KHz, further preferably 80~120KHz；The present invention does not have particular/special requirement to the specific embodiment of the ultrasound, uses
It is well-known to those skilled in the art.In the present invention, the revolving speed of the shear-mixed is preferably 1800~2500r/
Min, further preferably 2000~2300r/min；The time of the shear-mixed is preferably 30~60min, further preferably
For 45~50min.The present invention does not have particular/special requirement to the specific embodiment of the shear-mixed, using those skilled in the art
It is known；In an embodiment of the present invention, it is specifically carried out in high-speed shearing emulsion machine.The present invention first passes through organic molten
Agent soaks carbon nanotube, then is dispersed in water under the action of dispersing agent, and carbon nanotube can be prevented to be directly added into drift
It floats on the surface.
In the present invention, the magnetic medium preferably include ferrite, carboxyl iron and elemental metals one of or it is a variety of；
The elemental metals include silver, copper or iron；The elemental metals are preferably elemental metals powder, and partial size is preferably 50~400nm, into
One step is preferably 80~320nm, more preferably 100~300nm.In the present invention, the ferrite and carboxyl iron are preferably with powder
The form at end provides, and the partial size of ferrite powder and carboxyl iron powder is independently preferably 100~200nm.In the present invention, institute
Magnetic medium is stated self by causing natural resonance, magnetic hystersis loss, eddy-current loss, domain wall resonance to decay electromagnetic wave, then multiple
Compound/carbon nano pipe can from electricity, it is upper in terms of magnetic two decay to electromagnetic wave, acquisition more preferably performance.
In the present invention, carbon nanotube in the magnetic medium and carbon nano tube dispersion liquid is (with the carbon nanotube that does not soak
Quality meter) mass ratio be preferably 1:(10~20), further preferably 1:(12~18), more preferably 1:15.
Preferably under ultrasound condition, magnetic medium is distributed in carbon nano tube dispersion liquid by the present invention, is obtained magnetic medium-carbon and is received
Mitron composite dispersion liquid.In the present invention, the time of the ultrasound is preferably 1~3h, and ultrasonic power is preferably 50~
150KHz, further preferably 100~120KHz.The present invention is by the way of ultrasonic disperse, convenient for promoting magnetic medium to receive with carbon
It is uniformly mixed in mitron dispersion liquid.
After obtaining magnetic medium-carbon nanotube composite dispersion liquid, the present invention is by the magnetic medium-carbon nanotube composite dispersion liquid
It is mixed with hydroxyapatite overlong nanowire, obtains compound suspension.In the present invention, the hydroxyapatite overlength is received
The diameter of rice noodles is preferably 5~100nm, further preferably 10~80nm, more preferably 25~50nm；The hydroxyapatite
The length of overlong nanowire is preferably 30~1200 μm, further preferably 300~1000 μm, more preferably 600~1000 μm.
The present invention does not have particular/special requirement to the source of the hydroxyapatite overlong nanowire, uses source known to those skilled in the art
Hydroxyapatite overlong nanowire, such as commercially available hydroxyapatite overlong nanowire, the hydroxyl phosphorus that the embodiment of the present invention uses
Lime stone overlong nanowire is bought from Shanghai Silicate Inst., Chinese Academy of Sciences；It can also voluntarily be prepared.
When providing hydroxyapatite overlong nanowire by the way of voluntarily preparing, the hydroxyapatite overlength nanometer
The preparation method of line preferably includes:
(I) by calcium chloride solution, NaOH solution and NaH2PO4·2H2O aqueous solution is successively added dropwise in oleic acid alcoholic solution, is obtained
To mixed solution；
(II) mixed solution is subjected to hydro-thermal reaction, obtains hydro-thermal reaction product；
(IIII) it after being cooled to room temperature the hydro-thermal reaction product, successively carries out alcohol and washes and wash, obtain hydroxy-apatite
Stone overlong nanowire.
The present invention is preferably by calcium chloride solution, NaOH solution and NaH2PO4·2H2O aqueous solution is added dropwise to oleic acid alcoholic solution
In, obtain mixed solution.In the present invention, the concentration of the calcium chloride solution is preferably 5~15mol/L；The calcium chloride is molten
The preparation method of liquid preferably mixes anhydrous calcium chloride and water, obtains calcium chloride solution.In the present invention, the NaOH solution
Concentration be preferably 10~20mol/L, further preferably 15~18mol/L.In the present invention, the NaH2PO4·2H2O water
The concentration of solution is preferably 10~20mol/L, further preferably 12~15mol/L.Oleic acid is preferably dissolved in nothing by the present invention
In water-ethanol, oleic acid solutions are obtained；The mass ratio of the oleic acid and dehydrated alcohol is preferably 1:(1~3).
In the present invention, the volume ratio of the calcium chloride solution and oleic acid alcoholic solution is preferably 1:(1~1.5)；The chlorine
The drop rate for changing calcium solution is preferably 0.2~0.5mL/s.
In the present invention, the NaOH solution and the volume ratio of oleic acid alcoholic solution are preferably 1:(2.5~5), it is further excellent
It is selected as 1:(3~4.5)；The drop rate of the NaOH solution is preferably 0.2~0.5mL/s.
In the present invention, the NaH2PO4·2H2The volume ratio of O aqueous solution and oleic acid alcoholic solution is preferably 1:(5~10),
Further preferably 1:(6.5~7.5)；The NaH2PO4·2H2The drop rate of O aqueous solution is preferably 0.2~0.5mL/s.
The present invention is used calcium chloride solution, NaOH solution and NaH2PO4·2H2It is molten that O aqueous solution is sequentially added dropwise to oleic acid alcohol
The mode of liquid, and the dosage and drop rate of strict control solution provide guarantee for the uniform mixing of each component.
After obtaining mixed solution, the mixed solution is preferably carried out hydro-thermal reaction by the present invention, obtains hydro-thermal reaction product.
In the present invention, the temperature of the hydro-thermal reaction is preferably 150~250 DEG C, and further preferably 200~220 DEG C；The hydro-thermal
The time of reaction is preferably 8~15h, further preferably 10~12h.The present invention will form intermediate production in hydrothermal reaction process
Object CaHPO4、Ca2P2O4, ultimately generate Ca10(PO4)6(OH)2。
After obtaining hydro-thermal reaction product, after the hydro-thermal reaction product is preferably cooled to room temperature by the present invention, successively carry out
Alcohol is washed and is washed, and hydroxyapatite overlong nanowire is obtained.The present invention does not have particular/special requirement to the type of cooling, using ability
The feed liquid type of cooling known to field technique personnel.In the present invention, the number that the alcohol is washed and washed is respectively preferably 3
It is secondary；The mode that the present invention washes alcohol and washes does not have particular/special requirement, is using mode of washing well-known to those skilled in the art
It can.
In the present invention, carbon nanotube and hydroxyapatite overlength are received in the magnetic medium-carbon nanotube composite dispersion liquid
The mass ratio of rice noodles is preferably (3~7): (7~3), further preferably (5~6): (6~5)；In an embodiment of the present invention,
Specially 3:7,4:6,5:5,6:4 or 7:3.In the present invention, the mixed mode is preferably shear-mixed；The shearing is mixed
The revolving speed of conjunction is preferably 1800~2500r/min, further preferably 2000~2300r/min；The time of the shear-mixed
Preferably 30~60min, further preferably 45~50min.The present invention does not have the specific embodiment of the shear-mixed
Particular/special requirement, using well-known to those skilled in the art；In an embodiment of the present invention, specifically in high speed shearing emulsification
It is carried out in machine.The present invention is obtained by shear-mixed so that composite dispersion liquid and carboxyl apatite overlong nanowire are uniformly mixed
Compound suspension.
After obtaining compound suspension, the compound suspension is filtered by vacuum the present invention, makes solid in compound suspension
Deposition of body component will obtain carbon nanotube-hydroxyapatite overlong nanowire-magnetic Jie after filtering substrate removing to filtering in substrate
Matter electromagnetism non-woven fabrics presoma.In the present invention, the time of the vacuum filtration is preferably 2~5min, the vacuum of vacuum filtration
Degree is preferably 0.05~0.08MPa；The suction filtration substrate is preferably filter paper or filter cloth；The present invention is to the specific reality being filtered by vacuum
The mode of applying does not have particular/special requirement, using vacuum filtration mode well-known to those skilled in the art；In implementation of the invention
In example, specially first compound suspension is poured into the funnel equipped with suction filtration substrate, then it is filtered, so that solid component
It deposits to and filters in substrate.The present invention evaporates liquid component by vacuum filtration, and the solid component in compound suspension is heavy
In product to filter paper, carbon nanotube and hydroxyapatite overlong nanowire are interweaved as nanofiber, obtain three-dimensional network knot
The cloth-like thing matrix of structure, magnetic medium are filled in the network structure of cloth-like thing matrix.The present invention obtains after filtering substrate removing
Carbon nanotube-hydroxyapatite overlong nanowire-magnetic medium electromagnetism non-woven fabrics presoma.
The present invention does not have particular/special requirement to the stripping means for filtering substrate, uses removing side well known to those skilled in the art
Method.
After the completion of removing, the electromagnetism non-woven fabrics presoma is successively dried and roll-in the present invention, obtains electromagnetic screen
Cover non-woven fabrics.In the present invention, the temperature of the drying is preferably 65~80 DEG C, and further preferably 70~75 DEG C；It is described dry
The dry time is preferably 12~for 24 hours, further preferably 15~18h.The present invention does not have the specific embodiment of the drying
Particular/special requirement, using drying mode well-known to those skilled in the art；In an embodiment of the present invention, the dry tool
Body carries out in vacuum drying box.The present invention passes through the residual moisture in dry removal electromagnetism non-woven fabrics presoma.
After drying, the present invention carries out roll-in to dry presoma, obtains electromagnetism non-woven fabrics.In the present invention, the roll-in
Pressure be preferably 120~150KN/m, the number of roll-in is preferably 3~5 times.The present invention makes non-woven fabrics by the roll-in
In matrix, three-dimensional net structure is more fine and close, magnetic medium in conjunction with matrix more closely.
The present invention does not have particular/special requirement to the shape of the roll-in, can directly be rolled into specific according to target call
Shapes and sizes can also first be rolled into sheet, then be cut into required shapes and sizes.The present invention is to the roll-in
Specific embodiment does not have particular/special requirement, using well-known to those skilled in the art；Present invention preferably uses twin rollers
Carry out roll-in.
In the present invention, the hydroxyapatite overlong nanowire flexibility is good, high temperature resistant, corrosion-resistant, biological safety
Good, carbon nanotube has good cavernous structure；Since carbon nanotube does not have ferromagnetism, by adding magnetic medium, can make
Carbon nano tube compound material decays by force to electromagnetic wave in broadband in terms of electricity, magnetic two, obtains more preferably shielding properties.
The present invention also provides the electromagnetic shielding non-woven fabrics that preparation method described in above-mentioned technical proposal is prepared, by including
The raw material of carbon nanotube, hydroxyapatite overlong nanowire and magnetic medium is prepared, the carbon nanotube and hydroxyapatite
Overlong nanowire forms the cloth-like thing with network structure, and the magnetic medium is filled in the network structure of the cloth-like thing.?
In the present invention, the thickness of the electromagnetic shielding non-woven fabrics is preferably 0.1~1mm, further preferably 0.2~0.5mm；The electricity
The density of magnetic screen non-woven fabrics is preferably 0.4~0.8g/cm3, further preferably 0.5~0.75g/cm3。
The present invention provides a kind of electromagnetic shielding walls, including outer layer rain-proof cover, middle shield and internal layer decorative layer.?
In the present invention, the middle shield is electromagnetic shielding non-woven fabrics described in above-mentioned technical proposal, and details are not described herein.
As shown in Figure 1, electromagnetic shielding wall provided by the invention includes that internal layer decorative layer 1, middle shield 2 and outer layer are anti-
Rain layer 3.
In the present invention, the material of the outer layer rain-proof cover is preferably PVC plastic；The present invention is to the outer layer rain-proof cover
Source does not have particular/special requirement, using well-known to those skilled in the art.
In the present invention, the internal layer decorative layer is preferably wallpaper material；Source of the present invention to the internal layer decorative layer
There is no particular/special requirement, using commercial goods well-known to those skilled in the art.
In the present invention, the thickness of the outer layer rain-proof cover, middle shield and internal layer decorative layer is than being preferably (1~3):
(1~3): (1~3)；It in an embodiment of the present invention, can be specially 2:1:2,2:1:3,3:1:2,1:1:1,2:1:1.In this hair
In bright, the outer layer rain-proof cover, middle shield and internal layer decorative layer preferably pass through adhesive means and connect；Glue uses this field
Commercial goods known to technical staff.
The present invention does not have particular/special requirement to the preparation method of the electromagnetic shielding wall, ripe using those skilled in the art institute
The preparation method for the stratiform wall known.With the electromagnetic shielding room of the electromagnetic shielding wall building, with excellent anti-electric
Magnetic disturbance effect, reaches 40~50dB in the electromagnet shield effect of 30~1500MHz frequency range.
In the present invention, which is electromagnetically shielded room for quick field operation, can fill for combatant, weapon
The standby protection place for waiting offers that can prevent ELECTROMAGNETIC WEAPON from attacking, keeps viability and fighting capacity.
Below with reference to embodiment to a kind of electromagnetic shielding non-woven fabrics provided by the invention and preparation method thereof and a kind of electromagnetism
Shielding wall is described in detail, but they cannot be interpreted as limiting the scope of the present invention.
Embodiment 1
12g oleic acid is dissolved in 12g dehydrated alcohol, stirs evenly and stands 10min, then by 5mol/L calcium chloride solution
Under the conditions of magnetic agitation, it is added dropwise in oleic acid alcoholic solution with the rate of 0.2mL/s, stands 30min；It continues thereafter with and is stirred in magnetic force
The NaOH solution of 10mol/L is added dropwise at the same rate in oleic acid alcoholic solution under the conditions of mixing, completes to continue to stir after being added dropwise
1h；Then by the NaH of 10mol/L2PO4·2H2The continuation of O aqueous solution is added dropwise under the conditions of magnetic agitation in oleic acid alcoholic solution, magnetic
Power stirs 3h.
Obtained mixed solution is placed in reaction kettle, keeps the temperature 8h under the conditions of 150 DEG C of vacuum oven, it is then cold with furnace
But it washes 3 times, washes 3 times to room temperature, then alcohol, it is spare to obtain hydroxyapatite overlong nanowire, the hydroxyapatite overlength nanometer
The diameter of line is about 80nm, and length is about 600 μm.
The preparation of non-woven fabrics:
(1) according to dehydrated alcohol and carbon nanotube mass ratio 1:5, dehydrated alcohol is added drop-wise in 2g carbon nanotube, then
With 0.2g SDS dispersing agent, the carbon nanotube after wetting is distributed in 500mL distilled water, through 150KHz ultrasonic disperse processing 1
Hour, then 30min is sheared in high speed emulsification cutter, it is spare to obtain carbon nano tube dispersion liquid.
(2) 0.15g ferrite particle (average grain diameter 120nm) is added in the carbon nano tube dispersion liquid of step (1), warp
150KHz ultrasonic disperse 1h keeps carbon nanotube and ferrite particle evenly dispersed in a liquid, obtains composite dispersion liquid.
(3) above-mentioned composite dispersion liquid and 2g hydroxyapatite nano line are stirred, (are cut by high-speed shearing emulsion machine
Cutting the time is 60min, revolving speed 2500r/min) composite dispersion liquid and hydroxyapatite nano line are sufficiently mixed, dispersed, it obtains
To compound suspension.
(4) compound suspension is deposited on filter paper using the method for vacuum filtration, then removes filter paper and obtains carbon nanotube-
Hydroxyapatite is electromagnetically shielded non-woven fabrics presoma, is placed in vacuum drying box, 65 DEG C of dry 15h.
(5) by the non-woven fabrics presoma after drying by twin rollers rolling process, obtaining density is about 0.42g/cm3, thick
Degree is the electromagnetic shielding non-woven fabrics of 0.1mm.
Embodiment 2
Hydroxyapatite overlong nanowire is prepared in the way of embodiment 1, difference is: the temperature of vacuum oven is
200 DEG C, obtain that hydroxyapatite overlong nanowire is spare, the diameter of the hydroxyapatite overlong nanowire is 50nm, and length is
300μm。
The preparation of non-woven fabrics:
(1) according to dehydrated alcohol and carbon nanotube mass ratio 1:15, dehydrated alcohol is added drop-wise in 2.5g carbon nanotube, so
Afterwards with 0.25g SDS dispersing agent, the carbon nanotube after wetting is distributed in 600mL distilled water, at 120KHz ultrasonic disperse
Reason 1 hour, then 40min is sheared in high speed emulsification cutter, it is spare to obtain carbon nano tube dispersion liquid.
(2) 0.2g hydroxy iron powder (partial size 80nm) is added in the carbon nano tube dispersion liquid of step (1), it is super through 150KHz
Sound dispersion 1h keeps carbon nanotube and hydroxy iron powder evenly dispersed in a liquid, obtains composite dispersion liquid.
(3) above-mentioned composite dispersion liquid and 2g hydroxyapatite nano line are stirred, (are cut by high-speed shearing emulsion machine
Cutting the time is 30min, revolving speed 1800r/min) composite dispersion liquid and hydroxyapatite nano line are sufficiently mixed, dispersed, it obtains
To compound suspension.
(4) compound suspension is deposited on filter paper using the method for vacuum filtration, then removes filter paper and obtains carbon nanotube-
Hydroxyapatite is electromagnetically shielded non-woven fabrics presoma, is placed in vacuum drying box, 65 DEG C of dry 16h.
(5) by the non-woven fabrics presoma after drying by twin rollers rolling process, obtaining density is about 0.69g/cm3, thick
Degree is the electromagnetic shielding non-woven fabrics of 0.05mm.
Embodiment 3
Hydroxyapatite overlong nanowire is prepared in the way of embodiment 1, difference is: the temperature of vacuum oven is
200 degree, soaking time 15h, obtain that hydroxyapatite overlong nanowire is spare, the diameter of the hydroxyapatite overlong nanowire
For 100nm, length is 1200 μm.
The preparation of non-woven fabrics:
(1) according to dehydrated alcohol and carbon nanotube mass ratio 1:5, dehydrated alcohol is added drop-wise in 2g carbon nanotube, then
With 0.2g SDS dispersing agent, the carbon nanotube after wetting is distributed in 500mL distilled water, through 140KHz ultrasonic disperse processing 1
Hour, then 30min is sheared in high speed emulsification cutter, it is spare to obtain carbon nano tube dispersion liquid.
(2) 0.2g hydroxy iron powder (partial size 150nm) is added in the carbon nano tube dispersion liquid of step (1), through 150KHz
Ultrasonic disperse 1h keeps carbon nanotube and elemental iron powder (partial size 400nm) evenly dispersed in a liquid, obtains composite dispersion liquid.
(3) above-mentioned composite dispersion liquid and 2g hydroxyapatite nano line are stirred, (are cut by high-speed shearing emulsion machine
Cutting the time is 60min, revolving speed 2500r/min) composite dispersion liquid and hydroxyapatite nano line are sufficiently mixed, dispersed, it obtains
To compound suspension.
(4) compound suspension is deposited on filter paper using the method for vacuum filtration, then removes filter paper and obtains carbon nanotube-
Hydroxyapatite is electromagnetically shielded non-woven fabrics presoma, is placed in vacuum drying box, 65 DEG C of dry 18h.
(5) by the non-woven fabrics presoma after drying by twin rollers rolling process, obtaining density is about 0.68g/cm3, thick
Degree is the electromagnetic shielding non-woven fabrics of 0.053mm.
Embodiment 4
Electromagnetic shielding non-woven fabrics is prepared in the way of embodiment 3, difference is, the magnetic medium used is that partial size is
The copper powder of 200nm or so, obtaining density is about 0.71g/cm3, with a thickness of the electromagnetic shielding non-woven fabrics of 0.043mm.
Embodiment 5
Electromagnetic shielding non-woven fabrics is prepared in the way of embodiment 3, difference is, the magnetic medium used is that partial size is 50nm
The silver powder of left and right, obtaining density is about 0.75g/cm3, with a thickness of the electromagnetic shielding non-woven fabrics of 0.040mm.
Embodiment 6
Non-woven fabrics is prepared in the way of embodiment 2, wherein the preparation method of hydroxyapatite overlong nanowire area
Other: the temperature of vacuum oven is 200 degree, soaking time 15h, and it is spare to obtain hydroxyapatite overlong nanowire, the hydroxyl
The diameter of apatite overlong nanowire is 100nm, and length is 1200 μm.
Finally obtaining density is about 0.69g/cm3, with a thickness of the electromagnetic shielding non-woven fabrics of 0.051mm.
Embodiment 7~9
Hydroxyapatite overlong nanowire (being denoted as nano wire) is prepared using embodiment 1, in the way of embodiment 1
Preparation electromagnetic shielding non-woven fabrics, the dosage of each substance are as shown in table 1；The performance parameter of each substance is as shown in table 2.
The dosage (unit: g) of each raw material in the preparation of 1 embodiment of table, 7~9 non-woven fabrics
| Carbon nanotube | Dehydrated alcohol | Water | Dispersing agent | Magnetic medium | Nano wire | |
| Embodiment 7 | 5 | 25 | 150 | 0.5 | 0.5 | 5 |
| Embodiment 8 | 3 | 30 | 500 | 0.4 | 0.3 | 7 |
| Embodiment 9 | 7 | 100 | 1050 | 0.07 | 0.5 | 3 |
The performance parameter of each raw material in the preparation of 2 embodiment of table, 7~9 non-woven fabrics
The preparation process parameter and nonwoven fabric construct parameter of each raw material in the preparation of 3 embodiment of table, 7~9 non-woven fabrics
Strength test is carried out (using in unit cross-sectional area electromagnetic screen to the electromagnetic shielding non-woven fabrics that Examples 1 to 9 obtains
Cover and carry additionally the mode of counterweight under non-woven fabrics and test its tensile strength), test result is as shown in table 4.
The toughness and tenacity of the electromagnetic shielding non-woven fabrics of 4 Examples 1 to 9 of table
| Case | Intensity (MPa) |
| Embodiment 1 | 32 |
| Embodiment 2 | 48 |
| Embodiment 3 | 50 |
| Embodiment 4 | 30 |
| Embodiment 5 | 47 |
| Embodiment 6 | 46.5 |
| Embodiment 7 | 49.2 |
| Embodiment 8 | 49.5 |
| Embodiment 9 | 45 |
The electromagnetic shielding non-woven fabrics for being obtained Examples 1 to 9 using AV3620 type vector network analyzer is according to shown in Fig. 1
Structure preparation electromagnetic shielding wall, internal layer decorative layer use commercially available wallpaper, and outer layer rain-proof cover uses PCV plastics, and thickness ratio is
Then wall is carried out electromagnet shield effect in 30~1500MHz frequency range by 2:1:2 (internal layer 2mm, middle layer 1mm, outer layer 2mm)
Test, test result are as shown in table 5.
The electromagnetic shielding performance of the electromagnetic shielding non-woven fabrics of 5 Examples 1 to 9 of table
| Case | Shield effectiveness (dB) |
| Embodiment 1 | 49 |
| Embodiment 2 | 41 |
| Embodiment 3 | 40 |
| Embodiment 4 | 44 |
| Embodiment 5 | 47 |
| Embodiment 6 | 44 |
| Embodiment 7 | 45.2 |
| Embodiment 8 | 42.5 |
| Embodiment 9 | 46 |
As shown in Table 5, the intensity for the electromagnetic shielding non-woven fabrics that the present invention obtains is in 30~50Mpa, in 30~1500MHz frequency
Section electromagnet shield effect reaches 40~50dB, has excellent electromagnetic shielding performance.
Embodiment 10
The electromagnetic shielding non-woven fabrics that embodiment 1 is obtained prepares electromagnetic shielding wall according to structure shown in Fig. 1 respectively, respectively
Corresponding wall 1, wall 2, wall 3, wall 4 and wall 5, internal layer decorative layer use commercially available wallpaper, and outer layer rain-proof cover uses PCV
Plastics, thickness of wall body parameter is as shown in table 6, and builds electromagnetic shielding room with this.
The thickness parameter of the different walls of table 6
| Internal layer decorative layer (mm) | Middle shield (mm) | Outer layer rain-proof cover (mm) | |
| Wall 1 | 2 | 1 | 2 |
| Wall 2 | 2 | 1 | 3 |
| Wall 3 | 3 | 1 | 2 |
| Wall 4 | 1.3 | 1 | 1 |
| Wall 5 | 2 | 1 | 1 |
Electromagnet shield effect test is carried out to different-thickness wall in table 6 using AV3620 type vector network analyzer, it can
See, in 30~1500MHz frequency range, the electromagnet shield effect of wall 1~5 is respectively 44dB, 43dB, 43dB, 41dB, 42dB.
According to the above results as can be seen that present invention process process is simple, any organic solvent is not added, it is at low cost, it fits
Close large-scale industrial production.
The present invention by the compound obtained carbon nanometer tube/hydroxyapatite nano wire of carbon nanotube and hydroxyapatite nano line without
Woven fabric, making it, it has both good fire prevention and shielding effect.Magnetic medium type shielding material is added simultaneously, advanced optimizes its shielding
Efficiency；Electromagnetic shielding non-woven fabrics provided by the invention has bio-compatibility, does not deposit compared to traditional electromagnetic shielding material
The metal of high conductivity, alloy type shielding material reflection of the surface to electromagnetic wave caused by secondary electromagnetic pollution, can be with
Accomplish pollution-free or even no pollution, and this non-woven fabrics has good strength and toughness, and shield effectiveness is more preferably.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of preparation method for being electromagnetically shielded non-woven fabrics, comprising the following steps:
(1) carbon nano tube dispersion liquid and magnetic medium are mixed, the magnetic medium obtained-carbon nanotube composite dispersion liquid；
(2) magnetic medium-carbon nanotube composite dispersion liquid and hydroxyapatite overlong nanowire are mixed, is obtained compound
Suspension；
(3) the compound suspension is filtered by vacuum, deposits to solid component in compound suspension in suction filtration substrate, it will
Deposit obtains electromagnetism non-woven fabrics presoma after suction filtration substrate surface removing；
(4) the electromagnetism non-woven fabrics presoma is successively dried and roll-in, obtains electromagnetic shielding non-woven fabrics.
2. preparation method according to claim 1, which is characterized in that the system of carbon nano tube dispersion liquid in the step (1)
Preparation Method includes: that gained is soaked carbon nanotube, dispersing agent and water and is mixed, is obtained after being soaked carbon nanotube using organic solvent
To carbon nano tube dispersion liquid；The mass ratio of the carbon nanotube and organic solvent is 1:(5~15)；The carbon nano tube dispersion liquid
The mass ratio of middle carbon nanotube and water is 1:(150~250)；The matter of carbon nanotube and dispersing agent in the carbon nano tube dispersion liquid
Amount is than being 1:(0.05~0.1).
3. preparation method according to claim 1, which is characterized in that magnetic medium includes ferrite, carboxylic in the step (1)
One of base iron and elemental metals are a variety of, and the mass ratio of carbon nanotube is 1 in the magnetic medium and carbon nano tube dispersion liquid:
(10~20)；The elemental metals include one of silver, copper and iron or a variety of.
4. preparation method according to claim 3, which is characterized in that the elemental metals are elemental metals powder, and partial size is
50~400nm.
5. preparation method according to claim 1, which is characterized in that magnetic medium-carbon nanotube is compound in the step (2)
The mass ratio of carbon nanotube and hydroxyapatite overlong nanowire is (3~7): (7~3) in dispersion liquid；The hydroxyapatite
The diameter of overlong nanowire is 5~100nm, and length is 30~1200 μm.
6. preparation method according to claim 1 or 5, which is characterized in that the mode mixed in the step (2) is shearing
Mixing；The time of the shear-mixed is 30~60min, and the revolving speed of shear-mixed is 1800~2500r/min.
7. preparation method according to claim 1, which is characterized in that dry temperature is 60~85 in the step (4)
DEG C, the time be 12~for 24 hours.
8. the electromagnetic shielding non-woven fabrics of the preparation of preparation method described in claim 1~7 any one, by including carbon nanotube, hydroxyl
The raw material of base apatite overlong nanowire and magnetic medium is prepared, the carbon nanotube and hydroxyapatite overlong nanowire shape
At the cloth-like thing with network structure, the magnetic medium is filled in the network structure of the cloth-like thing.
9. a kind of electromagnetic shielding wall, including outer layer rain-proof cover, middle shield and internal layer decorative layer, which is characterized in that described
Middle shield is formed by electromagnetic shielding non-woven fabrics according to any one of claims 8.
10. electromagnetic shielding wall according to claim 9, which is characterized in that the outer layer rain-proof cover, middle shield and
The thickness ratio of internal layer decorative layer is (1~3): (1~3): (1~3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811020549.1A CN109208322B (en) | 2018-09-03 | 2018-09-03 | Electromagnetic shielding non-woven fabric, preparation method thereof and electromagnetic shielding wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811020549.1A CN109208322B (en) | 2018-09-03 | 2018-09-03 | Electromagnetic shielding non-woven fabric, preparation method thereof and electromagnetic shielding wall |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109208322A true CN109208322A (en) | 2019-01-15 |
| CN109208322B CN109208322B (en) | 2020-10-20 |
Family
ID=64987409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811020549.1A Active CN109208322B (en) | 2018-09-03 | 2018-09-03 | Electromagnetic shielding non-woven fabric, preparation method thereof and electromagnetic shielding wall |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109208322B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111537472A (en) * | 2020-07-07 | 2020-08-14 | 中国人民解放军国防科技大学 | Method for obtaining shielding effectiveness of artificially prepared biological material in external environment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102351165A (en) * | 2011-06-23 | 2012-02-15 | 中国科学院苏州纳米技术与纳米仿生研究所 | Large-area freestanding carbon nanotube paper and preparation method thereof |
| CN106835847A (en) * | 2017-03-13 | 2017-06-13 | 南昌大学 | A kind of preparation method of bio-compatibility carbon nanometer tube/hydroxyapatite extrusion coating paper |
| CN107012720A (en) * | 2017-03-13 | 2017-08-04 | 南昌大学 | A kind of conductive non-woven fabrics preparation method of bio-compatible |
| CN107541996A (en) * | 2016-06-25 | 2018-01-05 | 董晓 | A kind of preparation method of modified carbon nano-tube electromagnetic shielding paper |
-
2018
- 2018-09-03 CN CN201811020549.1A patent/CN109208322B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102351165A (en) * | 2011-06-23 | 2012-02-15 | 中国科学院苏州纳米技术与纳米仿生研究所 | Large-area freestanding carbon nanotube paper and preparation method thereof |
| CN107541996A (en) * | 2016-06-25 | 2018-01-05 | 董晓 | A kind of preparation method of modified carbon nano-tube electromagnetic shielding paper |
| CN106835847A (en) * | 2017-03-13 | 2017-06-13 | 南昌大学 | A kind of preparation method of bio-compatibility carbon nanometer tube/hydroxyapatite extrusion coating paper |
| CN107012720A (en) * | 2017-03-13 | 2017-08-04 | 南昌大学 | A kind of conductive non-woven fabrics preparation method of bio-compatible |
Non-Patent Citations (1)
| Title |
|---|
| GUH-HWAN LIM ET.AL.: "Mechanically Robust Magnetic Carbon Nanotube Papers Prepared with CoFe2O4 Nanoparticles for Electromagnetic Interference Shielding and Magnetomechanical Actuation", 《 ACS APPL. MATER. INTERFACES》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111537472A (en) * | 2020-07-07 | 2020-08-14 | 中国人民解放军国防科技大学 | Method for obtaining shielding effectiveness of artificially prepared biological material in external environment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109208322B (en) | 2020-10-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Perelshtein et al. | CuO–cotton nanocomposite: Formation, morphology, and antibacterial activity | |
| Sedighi et al. | Copper nanoparticles on bleached cotton fabric: in situ synthesis and characterization | |
| Perelshtein et al. | Chitosan and chitosan–ZnO-based complex nanoparticles: formation, characterization, and antibacterial activity | |
| Liu et al. | A flexible fibrous membrane based on copper (ii) metal–organic framework/poly (lactic acid) composites with superior antibacterial performance | |
| Ling et al. | Novel antibacterial paper based on quaternized carboxymethyl chitosan/organic montmorillonite/Ag NP nanocomposites | |
| Perelshtein et al. | Enzymatic pre-treatment as a means of enhancing the antibacterial activity and stability of ZnO nanoparticles sonochemically coated on cotton fabrics | |
| Zhang et al. | Superior antibacterial activity of Fe 3 O 4@ copper (ii) metal–organic framework core–shell magnetic microspheres | |
| Shen et al. | An ultra-light antibacterial bagasse–AgNP aerogel | |
| CN107541996A (en) | A kind of preparation method of modified carbon nano-tube electromagnetic shielding paper | |
| CN109208322A (en) | A kind of electromagnetic shielding non-woven fabrics and preparation method thereof and a kind of electromagnetic shielding wall | |
| Qu et al. | Anchoring silver nanoparticles using catechol-derived resins: an efficient and versatile approach for producing durable antimicrobial fabrics | |
| CN107670646A (en) | A kind of bead structure nano zero valence iron/cellulose composite material and its application | |
| CN104831528B (en) | The non-woven fabric compounded ion plating nano-metal technique of highly effective air particulate filter and its product | |
| He et al. | 3D hierarchical Cu-MOF nanosheets-based antibacterial mesh | |
| CN107098341A (en) | Graphene oxide new type water thermal stencil agent and its preparation method of nano composite material | |
| CN108190876B (en) | A kind of graphene composite absorber and preparation method thereof | |
| CN110282952A (en) | The composite material and preparation method for having electromagnetic shielding and shape-memory properties | |
| CN102294047A (en) | Antibacterial dressing based on cellulose fibre fabric modification and preparation method thereof | |
| CN108601316A (en) | A kind of preparation method and application of electromagnetic shielding material | |
| Perelshtein et al. | The sonochemical functionalization of textiles | |
| Qu et al. | Silver nanoparticle@ catechol formaldehyde resin microspheres: One-pot synthesis and application for producing durable antimicrobial cotton fabrics | |
| Li et al. | Preparation and antibacterial activity of graphene oxide/cuprous oxide/zinc oxide nanocomposite | |
| CN108905970A (en) | The preparation method and application of cadmium adsorbent is removed based on the modified water body of clinoptilolite | |
| CN108774289A (en) | Preparation method, high-carboxyl-content chitin nanofiber dispersion liquid and the application of high-carboxyl-content chitin nanofiber dispersion liquid | |
| Liu et al. | Enhanced hydrophobicity for high-performance oil–water separation via co-deposition of Fe (Ⅱ) and lauryl gallate on composite fabric |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |