CN106087388A - A kind of flexible electromagnetic wave shielding absorbs cloth and preparation method thereof - Google Patents
A kind of flexible electromagnetic wave shielding absorbs cloth and preparation method thereof Download PDFInfo
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- CN106087388A CN106087388A CN201610411268.3A CN201610411268A CN106087388A CN 106087388 A CN106087388 A CN 106087388A CN 201610411268 A CN201610411268 A CN 201610411268A CN 106087388 A CN106087388 A CN 106087388A
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- 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
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- 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
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- 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
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- 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
- D06M11/47—Oxides or hydroxides of elements of Groups 5 or 15 of the Periodic System; Vanadates; Niobates; Tantalates; Arsenates; Antimonates; Bismuthates
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- 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
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- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
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- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/18—Synthetic fibres consisting of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
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Abstract
The invention discloses a kind of flexible electromagnetic wave shielding and absorb cloth and preparation method thereof, flexible electromagnetic wave shielding absorbs cloth and includes four-layer structure, is followed successively by science fabric layer, electromagnetic wave shielding, electromagnetic wave absorbing layer, fire-resistant waterproof layer from bottom to top.Flexible electromagnetic wave shielding absorbs the preparation method of cloth, comprises the following steps: 1), science fabric is dried；2), science fabric described in step 1 is carried out pre-treatment；3), by science fabric plating layer of metal described in step 2；4), the science fabric of plating metal level described in step 3 is coated one layer of antiradar coatings；5), coating described in step 4 is inhaled science fabric one layer of flame-retardant waterproof coating of coating of ripple layer.Electromagnetic wave shielding of the present invention absorbs cloth and has the advantages such as suction ripple bandwidth, absorption intensity height, fire-resistant waterproof, pliability is good, lightweight, thickness is thin, can be used for the anti-electromagnetic interference in the field such as electronic product, military equipment, anti-electronic percussion.
Description
Technical field
The present invention relates to fiber absorbing material, specifically a kind of flexible electromagnetic wave shielding absorbs cloth and preparation side thereof
Method.
Background technology
Along with the high speed development of modern electronics industry, the electromagnetic wave application in fields such as wireless telecommunications has been goed deep into each
The life of people, for improving the transmission speed of signal, uses frequency also improving constantly.Passing of satelline antenna is launched earthward and connects
Receiving electromagnetic wave, the communication switching between mobile phone and base station is all to complete audio frequency, video and various digital signal by electromagnetic wave
Transmission.It addition, the electromagnetic field that various electronic products operationally produce change can produce electromagnetic wave, radiate in environment
A large amount of different wave lengths and the electromagnetic wave of frequency, Electromagnetic Interference and Contamination of Electromagnetic Wave are the most serious.
In radar and radio communication system, apply absorbing material, the interference between communication line can be effectively prevented from, carry
High radar and the sensitivity of communication apparatus, thus improve the quality of communication；The equipment such as high-frequency communication system and microwave heating
Application be also required to prevent electromagnetic radiation and leakage with absorbing material, thus protect the healthy of operator and safety.
The weaponrys such as aircraft, guided missile, tank, naval vessels, ammunition depot and facility cover absorbing material, can decline with absorbing radar wave
Antireflective signal, is that counter radar detects very effective means, reduces armament systems and attacked by guided missile and laser weapon
A kind of method.
Absorbing material refers to effectively to absorb the electromagnetic wave of incidence, and is thermal energy consumption by electromagnetic energy or makes electromagnetic wave do
Relate to cancellation, so that the class functional material that the echo strength of target is obviously reduced.Absorbing material is at dual-use two necks
Territory all has very important using value.According to wave-absorbing mechanism, absorbing material is divided into magnetic loss, dielectric loss and conduction loss
Type.There is the shortcomings such as absorption band is narrow, absorption bands is single, density is big, thickness is big, oxidizable in existing absorbing material, and spy
When different place uses, it is difficult to take into account the performances such as waterproof, fire-retardant, limit the actual application of absorbing material.
Little about the report inhaling ripple cloth the most both at home and abroad, patent of invention (201410213142.6) provides a kind of multilamellar
Structure radar-wave absorbing cloth and preparation method thereof, the method includes substrate canvas, absorbing material layer and adhesive layer, absorbing material layer
Being pasted onto on substrate canvas by adhesive layer overlapping, absorbing material layer combines with bond layer alternate multiple, absorbing material layer
For the polyurethane coating layer containing ferromagnetic metal alloy micropowder.The method has essential distinction at absorbent structure with the present invention, this
Reflection of electromagnetic wave through electromagnetic wave absorbing layer can be returned electromagnetic wave absorbing layer by bright electromagnetic wave shielding, forms secondary and inhales
Receive, make the absorbent properties of suction ripple cloth be greatly improved.
Summary of the invention
It is an object of the invention to provide a kind of flexible electromagnetic wave shielding and absorb cloth and preparation method thereof, there is suction ripple frequency band
Width, absorption intensity height, fire-resistant waterproof, pliability is good, lightweight, thickness is thin, technique is simple and convenient to operate, the spy such as economic and environment-friendly
Point.
In order to reach above-mentioned purpose, present invention employs following technical scheme, a kind of flexible electromagnetic wave shielding absorbs cloth, bag
Include four-layer structure, be followed successively by science fabric layer, electromagnetic wave shielding, electromagnetic wave absorbing layer, fire-resistant waterproof layer from bottom to top.
The chemical fibre of described science fabric layer is polyster fibre, nylon fibre, polyvinyl chloride fibre fiber, acrylic fiber, dimension
Synthetic fibre fiber, polypropylene fiber, aramid fiber, polytetrafluoroethylene fibre, polyimide fiber, polyphenylene sulfide fibre, glass fibre, profound
Military rock fiber one or more.
Described electromagnetic wave shielding layer thickness is 0.5 μm～5 μm, described electromagnetic wave shielding be nickel, copper, silver, titanium, the one of chromium
Plant or multiple.
Described electro-magnetic wave absorption layer thickness is 50 μm～300 μm, and described electromagnetic wave absorbing layer is by absorbent, water-base resin group
Become；Described absorbent is ferrite, carbonyl iron, polycrystalline ferrum, metal powder, alloyed powder, nitrided iron, carbon fiber, carbon black, carbon nanometer
Pipe, carborundum, Barium metatitanate. one or more；Described absorbent be shaped as lamellar, spherical, fibrous, bar-shaped, flower-shaped, tree
Dendritic, irregular one or more.The particle diameter of described absorbent is 1nm～100 μm；Described water-base resin is the poly-ammonia of aqueous
Ester resin, water-borne acrylic resin, aqueous epoxy resins, water-compatible amino resin, waterborne organic silicon resin one or more.Institute
The mass ratio stating absorbent and water-base resin is 40～90:60～10.
Described fire-resistant waterproof layer thickness is 5 μm～20 μm, and described fire-resistant waterproof layer is made up of fire retardant, oleoresin.Institute
The mass ratio stating fire retardant and oleoresin is 50～80:50～20.
In order to reach above-mentioned another object, present invention employs following technical scheme, a kind of flexible electromagnetic wave shielding absorbs
The preparation method of cloth, comprises the following steps:
1) under the conditions of 60～100 DEG C, 24～48h, by science fabric are dried, to reduce its water content；
2) pre-treatment 20～60min, by science fabric described in step 1 is carried out, to improve the knot of itself and plating metal
Make a concerted effort；
3), by science fabric plating layer of metal described in step 2；
4), the science fabric of plating metal level described in step 3 is coated one layer of antiradar coatings；
5), coating described in step 4 is inhaled science fabric one layer of flame-retardant waterproof coating of coating of ripple layer.
Described pre-treatment is Cement Composite Treated by Plasma, ion source process, the one of sided corona treatment.
Described plating is the one of chemical plating, vacuum evaporation, physical vapour deposition (PVD).
Described be applied to blade coating, spraying, the one of dip-coating.
Compared to prior art, the method have the advantages that
By the design of electromagnetic wave shielding, it is possible to the reflection of electromagnetic wave through electromagnetic wave absorbing layer is returned to electromagnetic wave and inhales
Receive layer, form the double absorption of electromagnetic wave, make the absorbent properties of suction ripple cloth be greatly improved.
By the modular design of monolayer rubber-ferrite layer Yu electromagnetic wave shielding, on the basis of meeting absorbing property,
Simplify multilamellar and inhale ripple Rotating fields, reduce the suction thickness of ripple cloth, quality, widened the application inhaling ripple cloth.
Using the electromagnetic wave shielding prepared of the inventive method to absorb cloth, to have suction ripple bandwidth, absorption intensity high, fire-retardant anti-
The advantages such as water, pliability are good, lightweight, thickness is thin, can be used for the anti-electromagnetic interference in the field such as electronic product, military equipment, resist
Electronic percussion.The inventive method technique is simple, safe and reliable, easy to operate, economic and environment-friendly, it is easy to scale is produced in batches.
Accompanying drawing explanation
Fig. 1 is the structural representation that a kind of flexible electromagnetic wave shielding absorbs cloth.
In figure: 1 represents fire-resistant waterproof layer, and 2 represent electromagnetic wave absorbing layer, and 3 represent electromagnetic wave shielding, 4 represent chemistry fibre
Dimensional fabric layer.
Detailed description of the invention
Detailed description for the present invention and technology contents, coordinate accompanying drawing be described as follows, but accompanying drawing only provide with reference to
Purposes of discussion, is not used for being any limitation as the present invention.
According to Fig. 1, a kind of flexible electromagnetic wave shielding absorbs cloth, including four-layer structure, is followed successively by chemistry from bottom to top
Fiber fabric layer, electromagnetic wave shielding, electromagnetic wave absorbing layer, fire-resistant waterproof layer.The chemical fibre of described science fabric layer
For polyster fibre, nylon fibre, polyvinyl chloride fibre fiber, acrylic fiber, vinylon fibre, polypropylene fiber, aramid fiber, fibrillated polytetrafluoroethylene
Dimension, polyimide fiber, polyphenylene sulfide fibre, glass fibre, basalt fibre one or more.Described electromagnetic wave shielding thickness
Degree is 0.5 μm～5 μm, described electromagnetic wave shielding be nickel, copper, silver, titanium, chromium one or more.Described electromagnetic wave absorbing layer
Thickness is 50 μm～300 μm, and described electromagnetic wave absorbing layer is made up of absorbent, water-base resin；Described absorbent is ferrite, carbonyl
Base ferrum, polycrystalline ferrum, metal powder, alloyed powder, nitrided iron, carbon fiber, carbon black, CNT, carborundum, the one of Barium metatitanate. or many
Kind；Described absorbent be shaped as lamellar, spherical, fibrous, bar-shaped, flower-shaped, dendroid, irregular one or more.
The particle diameter of described absorbent is 1nm～100 μm；Described water-base resin is waterborne polyurethane resin, water-borne acrylic resin, aqueous
Epoxy resin, water-compatible amino resin, waterborne organic silicon resin one or more.Described absorbent and the mass ratio of water-base resin
It is 40～90:60～10.Described fire-resistant waterproof layer thickness is 5 μm～20 μm, and described fire-resistant waterproof layer is by fire retardant, oleoresin
Composition.Described fire retardant is 50～80:50～20 with the mass ratio of oleoresin.
Embodiment 1:
1) under the conditions of 100 DEG C, 24h, by nylon fibre fabric is dried, to reduce its water content；
2), ion source is used to process 40min, to improve the knot of itself and plating metal in nylon fibre fabric described in step 1
Make a concerted effort；
3), by the nickel of one layer of 3 μ m-thick of nylon fibre cloth vacuum evaporation described in step 2；
4), the nylon fibre fabric of plating nickel dam described in step 3 is scratched the antiradar coatings of a layer thickness 100 μm, wherein
Antiradar coatings is with 10nm lamellar ferrite as absorbent, and waterborne polyurethane resin is base material, and absorbent is 60 with substrate mass ratio:
40, prepare through high speed dispersion；
5) the nylon fibre fabric, by blade coating described in step 4 inhaling ripple layer scratches the flame-retardant waterproof coating of a layer thickness 10 μm,
Wherein flame-retardant waterproof coating with magnesium hydroxide as fire retardant, oiliness polyurethane resin as base material, fire retardant with substrate mass ratio is
50:50, prepares through high speed dispersion；It is flexible electromagnetic wave shielding and absorbs cloth.
Open abundant in order to ensure, the concrete preparation method of antiradar coatings is as follows:
1) process 10～60min, by particle diameter 1nm～100 μm absorbent it is placed in ethyl acetate, to improve absorbent and water
The compatibility of property resin；Described absorbent be ferrite, carbonyl iron, polycrystalline ferrum, metal powder, alloyed powder, nitrided iron, carbon fiber,
Carbon black, CNT, carborundum, Barium metatitanate. one or more.Described absorbent be shaped as lamellar, spherical, fibrous, excellent
Shape, flower-shaped, dendroid, irregular one or more.Described water-base resin is waterborne polyurethane resin, water soluble acrylic acid tree
Fat, aqueous epoxy resins, water-compatible amino resin, waterborne organic silicon resin one or more.
2), will process described in step 1 after absorbent join in water-base resin, the wherein matter of absorbent and water-base resin
Amount ratio is 40～90:60～10, after high speed dispersion uniformly mixes, prepares antiradar coatings.
Embodiment 2:
1) under the conditions of 80 DEG C, 48h, by polyimide fiber fabric is dried, to reduce its water content；
2), polyimide fiber fabric described in step 1 is used sided corona treatment 20min, to improve itself and plating metal
Adhesion；
3), by copper and the silver of 2 μ m-thick of one layer of 0.5 μ m-thick of polyimide fiber Fabric Physical vapour deposition described in step 2；
4), the polyimide fiber fabric of plating nickel dam described in step 3 is sprayed the antiradar coatings of a layer thickness 50 μm, its
Middle antiradar coatings is with 100nm fibrous metal powder as absorbent, and aqueous epoxy resins is base material, and absorbent with substrate mass ratio is
90:10, prepares through high speed dispersion；
5) the polyimide fiber fabric that, spraying described in step 4 inhales ripple layer scratches the fire-resistant waterproof painting of a layer thickness 5 μm
Material, wherein flame-retardant waterproof coating with antimony oxide as fire retardant, oiliness polyurethane resin as base material, fire retardant and substrate mass
Ratio is 60:40, prepares through high speed dispersion；It is flexible electromagnetic wave shielding and absorbs cloth.
Open abundant in order to ensure, the concrete preparation method of antiradar coatings is as follows:
1) process 10～60min, by particle diameter 1nm～100 μm absorbent it is placed in acetone, to improve absorbent and aqueous tree
The compatibility of fat；Described absorbent be ferrite, carbonyl iron, polycrystalline ferrum, metal powder, alloyed powder, nitrided iron, carbon fiber, carbon black,
CNT, carborundum, Barium metatitanate. one or more.Described absorbent be shaped as lamellar, spherical, fibrous, bar-shaped, colored
Shape, dendroid, irregular one or more.Described water-base resin is waterborne polyurethane resin, water-borne acrylic resin, water
Property epoxy resin, water-compatible amino resin, waterborne organic silicon resin one or more.
2), will process described in step 1 after absorbent join in water-base resin, the wherein matter of absorbent and water-base resin
Amount ratio is 40～90:60～10, after high speed dispersion uniformly mixes, prepares antiradar coatings.
Embodiment 3:
1) under the conditions of 60 DEG C, 36h, by acrylic fiber fabric is dried, to reduce its water content；
2), acrylic fiber fabric using plasma described in step 1 is processed 60min, to improve itself and plating metal
Adhesion；
3), by the silver of one layer of 5 μ m-thick of acrylic fiber textile chemistry plating described in step 2；
4), by the antiradar coatings of acrylic fiber fabric dip-coating a layer thickness 300 μm of plating nickel dam described in step 3, wherein
Antiradar coatings is with the mixture of the 1 spherical alloyed powder of μm and 500nm lamellar carbon black as absorbent, and water-borne acrylic resin is base material,
Absorbent and substrate mass, than for 40:60, are prepared through high speed dispersion；The mass ratio of the most spherical alloyed powder and lamellar carbon black is
30:70；
5) the acrylic fiber fabric, by dip-coating described in step 4 inhaling ripple layer sprays the flame-retardant waterproof coating of a layer thickness 20 μm,
Wherein flame-retardant waterproof coating with aluminium hydroxide as fire retardant, oiliness polyurethane resin as base material, fire retardant with substrate mass ratio is
80:20, prepares through high speed dispersion；It is flexible electromagnetic wave shielding and absorbs cloth.
Open abundant in order to ensure, the concrete preparation method of antiradar coatings is as follows:
1) process 10～60min, by particle diameter 1nm～100 μm absorbent it is placed in ethanol, to improve absorbent and aqueous tree
The compatibility of fat；Described absorbent be ferrite, carbonyl iron, polycrystalline ferrum, metal powder, alloyed powder, nitrided iron, carbon fiber, carbon black,
CNT, carborundum, Barium metatitanate. one or more.Described absorbent be shaped as lamellar, spherical, fibrous, bar-shaped, colored
Shape, dendroid, irregular one or more.Described water-base resin is waterborne polyurethane resin, water-borne acrylic resin, water
Property epoxy resin, water-compatible amino resin, waterborne organic silicon resin one or more.
2), will process described in step 1 after absorbent join in water-base resin, the wherein matter of absorbent and water-base resin
Amount ratio is 40～90:60～10, after high speed dispersion uniformly mixes, prepares antiradar coatings.
The foregoing is only presently preferred embodiments of the present invention, be not used to limit the scope of the claims of the present invention, other use this
The equivalence change of the patent spirit of invention, all should all belong to the scope of the claims of the present invention.
Claims (9)
1. a flexible electromagnetic wave shielding absorbs cloth, it is characterised in that includes four-layer structure, is followed successively by chemical fibre from bottom to top
Tissue layer, electromagnetic wave shielding, electromagnetic wave absorbing layer, fire-resistant waterproof layer.
A kind of flexible electromagnetic wave shielding the most according to claim 1 absorbs cloth, it is characterised in that described science fabric
Layer chemical fibre be polyster fibre, nylon fibre, polyvinyl chloride fibre fiber, acrylic fiber, vinylon fibre, polypropylene fiber, aramid fiber,
Polytetrafluoroethylene fibre, polyimide fiber, polyphenylene sulfide fibre, glass fibre, basalt fibre one or more.
A kind of flexible electromagnetic wave shielding the most according to claim 1 absorbs cloth, it is characterised in that described electromagnetic wave shielding
Thickness is 0.5 μm～5 μm, described electromagnetic wave shielding be nickel, copper, silver, titanium, chromium one or more.
A kind of flexible electromagnetic wave shielding the most according to claim 1 absorbs cloth, it is characterised in that described electromagnetic wave absorbing layer
Thickness is 50 μm～300 μm, and described electromagnetic wave absorbing layer is made up of absorbent, water-base resin；Described absorbent is ferrite, carbonyl
Base ferrum, polycrystalline ferrum, metal powder, alloyed powder, nitrided iron, carbon fiber, carbon black, CNT, carborundum, the one of Barium metatitanate. or many
Kind；Described absorbent be shaped as lamellar, spherical, fibrous, bar-shaped, flower-shaped, dendroid, irregular one or more；
The particle diameter of described absorbent is 1nm～100 μm；Described water-base resin is waterborne polyurethane resin, water-borne acrylic resin, aqueous
Epoxy resin, water-compatible amino resin, waterborne organic silicon resin one or more.Described absorbent and the mass ratio of water-base resin
It is 40～90:60～10.
A kind of flexible electromagnetic wave shielding the most according to claim 1 absorbs cloth, it is characterised in that described fire-resistant waterproof thickness
Degree is 5 μm～20 μm, and described fire-resistant waterproof layer is made up of fire retardant, oleoresin.Described fire retardant and the quality of oleoresin
Ratio is 50～80:50～20.
6. the preparation method of a flexible electromagnetic wave shielding absorption cloth, it is characterised in that comprise the following steps:
1) under the conditions of 60～100 DEG C, 24～48h, by science fabric are dried, to reduce its water content；
2) pre-treatment 20～60min, by science fabric described in step 1 is carried out, to improve the adhesion of itself and plating metal；
3), by science fabric plating layer of metal described in step 2；
4), the science fabric of plating metal level described in step 3 is coated one layer of antiradar coatings；
5), coating described in step 4 is inhaled science fabric one layer of flame-retardant waterproof coating of coating of ripple layer.
A kind of flexible electromagnetic wave shielding the most according to claim 6 absorbs the preparation method of cloth, it is characterised in that before described
Be processed as Cement Composite Treated by Plasma, ion source processes, the one of sided corona treatment.
A kind of flexible electromagnetic wave shielding the most according to claim 6 absorbs the preparation method of cloth, it is characterised in that described in cover
Plating is chemical plating, vacuum evaporation, the one of physical vapour deposition (PVD).
A kind of flexible electromagnetic wave shielding the most according to claim 6 absorbs the preparation method of cloth, it is characterised in that described painting
Cover for blade coating, spraying, the one of dip-coating.
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Application publication date: 20161109 |