CN108045060A - A kind of explosion-proof broadband absorbing composite material and preparation method thereof - Google Patents
A kind of explosion-proof broadband absorbing composite material and preparation method thereof Download PDFInfo
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- CN108045060A CN108045060A CN201711270967.1A CN201711270967A CN108045060A CN 108045060 A CN108045060 A CN 108045060A CN 201711270967 A CN201711270967 A CN 201711270967A CN 108045060 A CN108045060 A CN 108045060A
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- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/0038—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding involving application of liquid to the layers prior to lamination, e.g. wet laminating
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- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
- B32B27/281—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42 comprising polyimides
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- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
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- B32B27/00—Layered products comprising a layer of synthetic resin
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- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/36—After-treatment
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- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/02—Coating on the layer surface on fibrous or filamentary layer
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- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/20—Inorganic coating
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
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- B32B2255/205—Metallic coating
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/26—Polymeric coating
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—Polypropene
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- C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
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- C08J2333/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2333/24—Homopolymers or copolymers of amides or imides
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- C08J2463/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
Abstract
The present invention provides a kind of explosion-proof broadband absorbing composite materials and preparation method thereof, belong to multifunctional material technical field.Its preparation method includes：Explosion-proof covering is prepared with unsaturated-resin, preparation electricity damage inhales wave plate, prepares magnetic loss suction wave plate, prepares wideband interlayer absorbing material and fit in wideband interlayer absorbing material in reflected bottom plate successively with explosion-proof covering using quartz fibre.Obtained this explosion-proof broadband absorbing composite material is layer structure, including the reflection substrate, wideband interlayer absorbing material and explosion-proof covering contacted successively.This preparation method overcomes absorbing material and is difficult to the technology barrier combined with explosion-proof lamp, and preparation method is simple, easy industrializing implementation.Obtained composite material, while there is explosion prevention function and broadband absorbing, have the characteristics that low frequency performance is good, absorption band is wide, surface density is low and environmental performance is superior, both solved the explosion prevention function of product, and with the function of broadband absorbing.
Description
Technical field
The present invention relates to multifunctional material technical field, in particular to a kind of explosion-proof broadband absorbing composite material and
Its preparation method.
Background technology
With the growth of dual-use electromagnetic-wave absorbent demand, various electromagnetic wave absorption materials are widely studied and make
With current development absorbing material accounts in terms of single suction ripple mostly, and less consideration other structures function limits it
Application prospect in some fields.
Patent of invention (201510607620.6) provides a kind of cellular high temperature resistant absorbent structure material, and this method is by silicon
Rubber material inhales ripple layer, aluminum alloy honeycomb structure layer and isocyanates composite layer composition.Aluminum alloy honeycomb structure layer has
First microwave absorbing coating and the second microwave absorbing coating, respectively by the carbon dust of 3-18% and surplus isocyanates, the sheet carbonyl of 17-25%
It is formed with surplus isocyanates.Patent of invention (201210184823.5) provides a kind of broad band low frequency electro-magnetic wave absorption structure,
This aspect sets absorbent structure layer on metal floor, and comprising multiple identical structural units, each ripple unit of inhaling is by square
Sponge layer and the square resistive film on foamed material is set to form, set in square resistive film there are one the hole of square,
Square resistive film diagonally sets 4 gaps.These materials have certain absorbing property, but its absorbing material form,
Absorbent structure design, environmental suitability etc., it is also necessary to improve.
Existing broadband absorbing composite material is substantially all without explosion-proof performance, and professional explosion-proof lamp does not consider that wideband is inhaled
Ripple performance, these composite materials can not all realize explosion-proof, broadband absorbing dual function simultaneously.
The content of the invention
The first object of the present invention is to provide a kind of explosion-proof broadband absorbing composite material, this composite material by it is explosion-proof with
Broadband absorbing function is united, with low frequency performance is good, absorption band is wide, surface density is low and the superior strong spy of environmental performance
Point.
The second object of the present invention is to provide a kind of preparation method of explosion-proof broadband absorbing composite material, passes through this method
It can realize the function integration of the explosion-proof and broadband absorbing of product, preparation method is simple, easy industrializing implementation.
In order to realize the above-mentioned purpose of the present invention, spy uses following technical scheme：
A kind of preparation method of explosion-proof broadband absorbing composite material, including：
Explosion-proof covering is prepared using quartz fibre and unsaturated-resin；
After wave absorbing agent is calcined 3~5h at 300~500 DEG C, 0.5~1.5h is impregnated in strong acid, it, will after washing is dry
Treated, and wave absorbing agent is dispersed in glue；Electricity is made coated on foam substrate in the glue containing wave absorbing agent of gained again
Damage inhales wave plate；
The coating that ripple powder, epoxy resin and solvent or diluent are inhaled containing metal is scattered in emulsifier, after adding curing agent, is obtained
To antiradar coatings；By antiradar coatings coated on foam substrate, obtained magnetic loss inhales wave plate；
After electricity damage suction wave plate, epoxy jelly membrane, magnetic loss suction wave plate are sequentially overlapped laying, hot briquetting obtains wideband interlayer
Absorbing material；And
Wideband interlayer absorbing material and explosion-proof covering are fitted in reflected bottom plate successively.
A kind of explosion-proof broadband absorbing composite material obtained by above-mentioned preparation method, explosion-proof broadband absorbing composite material are layer
Shape structure, including the reflection substrate, wideband interlayer absorbing material and explosion-proof covering contacted successively.
Compared with prior art, beneficial effects of the present invention for example including：
The preparation method for the explosion-proof broadband absorbing composite material that present disclosure provides, by preparing explosion-proof covering and wideband
Interlayer absorbing material (it includes, and electricity damage inhales wave plate and magnetic loss inhales wave plate), and the two is fitted in reflected bottom plate, it is formed sandwich
The composite material of shape layer structure.This explosion-proof covering prepared by the present invention, is made by explosion-proof lamp, is had excellent explosion-proof
Characteristic, while its dielectric constant is low, is conducive in electromagnetic wave incident to composite material；Simultaneously as explosion-proof covering has transmission
The characteristic of electromagnetic wave so that electromagnetic wave can pass completely through explosion-proof covering, without being reflected when meeting with the composite material；
Further, since the matches impedances between the explosion-proof covering and absorbing material, can effectively prevent electromagnetic wave explosion-proof covering with
It is reflected back between absorbing material due to impedance mismatch.When electromagnetic wave is entered inside wideband interlayer absorbing material, lead to
It crosses electricity damage suction wave plate and magnetic loss inhales wave plate and can fall the energy loss of electromagnetic wave.This preparation method, which overcomes, as a result, inhales ripple material
Material is difficult to the technology barrier combined with explosion-proof lamp, and preparation method is simple, easy industrializing implementation.Obtained composite material, together
When there is explosion prevention function and broadband absorbing, have low frequency performance is good, absorption band is wide, surface density is low and environmental performance is superior
The characteristics of, both solved the explosion prevention function of product, and with the function of broadband absorbing.
Description of the drawings
It in order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described.
Fig. 1 is the structure diagram for the explosion-proof broadband absorbing composite material that embodiment of the present invention provides；
Fig. 2 is the flow chart that explosion-proof broadband absorbing composite material is prepared in the embodiment of the present invention 1；
Fig. 3 is the Stealth Fighter test result of explosion-proof broadband absorbing composite material in experimental example 1 of the present invention；
Fig. 4 is the Stealth Fighter test result of explosion-proof broadband absorbing composite material in experimental example 1 of the present invention.
Label：The explosion-proof coverings of 110-；120- wideband interlayer absorbing materials；130- reflection substrates.
Specific embodiment
Embodiment of the present invention is described in detail below in conjunction with embodiment, but those skilled in the art will
Understand, the following example is merely to illustrate the present invention, and is not construed as limiting the scope of the invention.It is not specified in embodiment specific
Condition person, the condition suggested according to normal condition or manufacturer carry out.Reagents or instruments used without specified manufacturer is
The conventional products that can be obtained by commercially available purchase.
Present embodiment provides a kind of explosion-proof broadband absorbing composite material, which is stratiform knot
Structure, as shown in Figure 1, it includes the reflection substrate contacted successively 120, wideband interlayer absorbing material 130 and explosion-proof covering 110.
This explosion-proof broadband absorbing composite material that present embodiment provides realizes functions by explosion-proof with broadband absorbing
Change, there is following key technology in the bond material of explosion-resistance characteristic and broadband absorbing characteristic：Explosion-proof covering has explosion-proof performance, and
Positioned at material surface, in order to which material is made to increase wideband interlayer absorbing material under explosion-proof covering with explosion-proof and Stealth.
In explosion-proof and absorbing material combination, on the one hand for explosion-proof covering as surface layer, dielectric constant is as low as possible, is conducive to electromagnetism
Ripple is incident in composite material, is absorbed in material internal；On the other hand the two impedance will match, and prevent electromagnetic wave in covering
It is reflected back between interlayer absorbing material due to impedance mismatch.
The preparation method of this explosion-proof broadband absorbing composite material includes：
Step S1:Explosion-proof covering is prepared using quartz fibre and unsaturated-resin.
Explosion-proof covering is the surface layer of composite material, has explosion prevention function in structure, has transmission electricity on wave energy is inhaled
Magnetic wave characteristic.
It is contraposition aramid fiber (P-ARF) and the poly- second of super-high relative molecular weight that explosion-proof lamp is most popular at present
Alkene (UHMWPE), high intensity quartz fibre, in addition, also price polyparaphenylene's Benzo-dioxazole (PBO) costly and pyrrole
Pyridine class aramid fiber (M-5) etc., can be only applied to special.
Explosion-proof covering preparation method：It will contraposition aramid fiber (P-ARF), high intensity quartz fibre and superelevation average molecular
Weight polyethylene etc. precuts, and brushing unsaturated-resin between explosion-proof lamp is put into metal die, using flexible bag moulding side
Formula is molded, and flexible bag moulding pressure is 0.8~1.2MPa, and when the Vacuumizing bag pressure time is 2~6 small, temperature is 80 DEG C~160 DEG C,
It is cooled to room temperature and takes out exemplar.
Explosion-proof covering is high intensity quartz fibre in this programme, compared to contraposition aramid fiber, super-high relative molecular weight
Polyethylene and pyridines aramid fiber, the explosion-proof covering that pyridines aramid fiber makes have dielectric constant low, are conducive to
The transmission of electromagnetic wave is conducive to improve Stealth Fighter under conditions of explosion-proof performance is ensured.
Step S2:Wideband interlayer absorbing material is prepared, including：
A) prepares electricity damage suction wave plate：After wave absorbing agent is calcined 3~5h at 300~500 DEG C, in strong acid impregnate 0.5~
1.5h, after washing is dry, by treated, wave absorbing agent is dispersed in glue；The glue containing wave absorbing agent of gained is coated on again
On foam substrate, electricity damage is made and inhales wave plate.
Wherein, wave absorbing agent includes at least one of carbon fiber, carbon black, carbon nanotubes and barium titanate.What is specifically prepared
In the process, the species for the properties of product requirement selection wave absorbing agent that can be designed as needed.More preferred, wave absorbing agent is fine for carbon
Dimension, optionally, wave absorbing agent is chopped carbon fiber.
The content of wave absorbing agent according to target product performance, can also calculate the additive amount of wave absorbing agent according to the following formula：
In formula, cWave absorbing agentFor the concentration of wave absorbing agent, WWave absorbing agentFor the quality of wave absorbing agent, WEpoxy jelly membraneFor the quality of epoxy jelly membrane.
The shape of wave absorbing agent is sheet, spherical, fibrous, rodlike, flower-shaped, dendroid and irregular one or more.
The section of wave absorbing agent is polygon or irregular shape.When the shape of absorbent or section difference, absorbent has different sizes
The features such as size, draw ratio.When electromagnetic wave incident is into absorbing material, since different frequency range wavelength is different, different shape or cut
The absorbent in face is different to the sensitivity of different wave length, and electromagnetic wave absorption intensity under same frequency there are larger difference, is made
Into the result is that the suction intensity of wave of the wave absorbing agent of different shape or different cross section is different.
Further, the grain size of wave absorbing agent is 1~100nm, in the scope of grain size or 1~100nm sections
Any combination, for example, can be 10~90nm 20~80nm or 35~65nm either for 42~58nm or
For 45~55nm.
Using foamed material as absorbing material made from base material, i.e. foam wave-suction material, have thin thickness, light weight,
The advantages that wave-absorbing effect is good, good mechanical performance, stable processing technology and its component and structure are easy to control, inhales in electromagnetic wave
Debit face shows very strong design flexibility.Further, foam substrate include Polymethacrylimide, polyvinyl chloride and
At least one of polypropylene.
Further, glue be by by tetrahydrofuran, acetone and epoxy jelly membrane according to mass ratio 1.2~1.8：1.2~
1.8：1 mixed preparing obtains, the mass ratio of three or for 1.3~1.7：1.3~1.7：1 or for 1.4~1.6：1.4
~1.6：1 or for 1.5：1.5：1.
B) prepares magnetic loss suction wave plate：The coating that ripple powder, epoxy resin and solvent or diluent are inhaled containing metal is scattered in emulsifier
In, after adding curing agent, obtain antiradar coatings；By antiradar coatings coated on foam substrate, obtained magnetic loss inhales wave plate.
Wherein, metal is inhaled ripple powder and is included in ferrite, iron carbonyl, polycrystalline iron, metal powder, alloyed powder and nitrided iron at least
It is a kind of.More preferred, it is iron carbonyl that metal, which inhales ripple powder,.
Further, coating is by the way that metal is inhaled ripple powder, epoxy resin and solvent or diluent according to mass ratio 1.5~2.5：0.5
~1.5：1 mixed preparing obtains, and mass ratio can be 1.8~2.3：0.7~1.3：1 or 1.9~2.2：0.8~
1.2：1 or for 2：1：1.Wherein, solvent or diluent is diluent, the mixing including dimethylbenzene, cyclohexanone, butanediol, butyl acetate
Liquid.
Further, curing agent includes epoxy resin NX-2040, polyethers amine hardener D400, epoxy resin and curing agent
Mass ratio be 4~6：1 or for 5：1.
C) prepares wideband interlayer absorbing material：Electricity is damaged into suction wave plate, epoxy jelly membrane, magnetic loss suction wave plate and is sequentially overlapped laying
Afterwards, hot briquetting obtains wideband interlayer absorbing material.
Specifically, after the electricity damage including that will prepare inhales wave plate laying, one layer of epoxy jelly membrane is laid on it, then again
The magnetic loss prepared is laid on it and inhales wave plate, and electricity damage inhales wave plate and magnetic loss inhales wave plate and is alternately laid with and spreads therebetween successively
If epoxy jelly membrane, when absorbing material thickness reaches design thickness, absorbing material hot briquetting that will complete.Hot briquetting temperature
It it is usually 80~200 DEG C according to epoxy jelly membrane characteristic and foam substrate featured configuration.
Further, the thickness of wideband interlayer absorbing material be 2~50mm be either 5~45mm or be 10~
40mm is either 20~30mm or is 23~27mm.The absorbing property of this wideband interlayer absorbing material is with its thickness in just
Correlation can be specifically chosen thickness according to the performance indicator of target material.
Step S3：Wideband interlayer absorbing material and explosion-proof covering are fitted in reflected bottom plate successively.
Further, there is the rubber-ferrite reflecting layer prepared by continuous magnetisable coating wave-absorption fibre in reflected bottom plate,
It has reflection and wave-sucking performance.Wherein, continuous magnetisable coating wave-absorption fibre includes magnetisable coating carbon fiber, magnetisable coating is carbonized
Any one in silica fibre, magnetisable coating glass fibre and magnetisable coating organic fiber.
Above-mentioned preparation method overcomes absorbing material and is difficult to the technology barrier combined with explosion-proof lamp, while has explosion-proof work(
Can have the characteristics that low frequency performance is good, absorption band is wide, surface density is low and environmental performance is superior with broadband absorbing function, both solved
It has determined the explosion prevention function of product, and with the function of broadband absorbing.
The feature and performance of the present invention are described in further detail with reference to embodiments：
Embodiment 1
The present embodiment provides a kind of explosion-proof broadband absorbing composite materials, are layer structure, including the reflection contacted successively
Substrate, wideband interlayer absorbing material and explosion-proof covering.
The flow of its preparation method is as shown in Fig. 2, specifically include：
1) prepares explosion-proof covering：
2) prepares wideband interlayer absorbing material：
A. using chopped carbon fiber as wave absorbing agent, chopped carbon fiber is put into crucible, is added in sintering oven, 400
When heating 4 is small at DEG C.Take out chopped carbon fiber with the concentrated sulfuric acid impregnate 1 it is small when, removal the concentrated sulfuric acid simultaneously clean 3 times with acetone, will clearly
When chopped carbon fiber after washing is placed on that naturally dry 24 is small on filter paper.
B. by tetrahydrofuran, acetone and epoxy jelly membrane according to 3:3:2 mass ratioes are configured to glue, at the uniform velocity stir 10min, treat
Glue is completely dissolved.Chopped carbon fiber weight is calculated according to the following formula, the concentration of chopped carbon fiber is respectively 0.05%,
0.1%th, 0.2%, 0.3%, 0.4%, 0.5%.
In formula, CCarbon fiberFor chopped carbon fiber concentration, WCarbon fiberFor chopped carbon fiber quality, WEpoxy jelly membraneFor the quality of epoxy jelly membrane.
Load weighted chopped carbon fiber is added in and disperses 20min in glue.After chopped carbon fiber uniformly disperses, according to
1.2kg/m2The glue for being mixed with chopped carbon fiber is coated uniformly on foam by dosage, is marked respectively.It will be painted with being chopped
The foam of carbon fiber is cool under air drying ventilated environment to be put for 24 hours, and electricity damage is made and inhales wave plate.
C. according to quality ripple powder is inhaled than metal：Epoxy resin：Solvent or diluent=2:1:1 configuration coating, is put into emulsifier and disperses
20min adds in curing agent, epoxy resin in finely dispersed coating：Curing agent=5:1, stir 5min.It will be added with solid
The coating even application of agent is on foam, spraying weight 2000g/m2, when drying 5 is small at 50 DEG C, magnetic loss is made and inhales ripple
Piece.
D. after the electricity damage prepared being inhaled wave plate laying, one layer of epoxy jelly membrane is laid on it, is then laid on it again
The magnetic loss prepared inhales wave plate, and electricity damage inhales wave plate and magnetic loss inhales wave plate and is alternately laid with successively and is laid with epoxy jelly membrane therebetween,
When absorbing material thickness reaches design thickness, absorbing material hot briquetting that will complete obtains wideband interlayer absorbing material.
3) wideband interlayer absorbing material and explosion-proof covering are fitted in successively in reflected bottom plate, obtains explosion-proof broadband absorbing and answer
Condensation material.
Embodiment 2
The present embodiment provides a kind of explosion-proof broadband absorbing composite materials, are layer structure, including the reflection contacted successively
Substrate, wideband interlayer absorbing material and explosion-proof covering.
Its preparation method is substantially consistent with embodiment 1, the difference is that：
2) prepares wideband interlayer absorbing material：
A. using carbon nanotubes as wave absorbing agent, carbon nanotubes is put into crucible, is added in sintering oven, at 500 DEG C
Heat 3 it is small when.Take out carbon nanotubes with the concentrated sulfuric acid impregnate 0.5 it is small when, removal the concentrated sulfuric acid simultaneously cleaned 3 times with acetone, after cleaning
Carbon nanotubes when being placed on that naturally dry 24 is small on filter paper.
B. by tetrahydrofuran, acetone and epoxy jelly membrane according to 1.2:1.2:1 mass ratio is configured to glue, at the uniform velocity stirs
10min treats that glue is completely dissolved.Carbon nanotubes are calculated with reference to the formula of embodiment 1, the concentration of carbon nanotubes is respectively
0.05%th, 0.1%, 0.2%, 0.3%, 0.4%, 0.5%.
Load weighted carbon nanotubes is added in and disperses 20min in glue.After carbon nanotubes uniformly disperses, according to 1.2kg/
m2The glue for being mixed with carbon nanotubes is coated uniformly on foam by dosage, is marked respectively.It will be painted with the bubble of carbon nanotubes
Foam is cool under air drying ventilated environment to be put for 24 hours, and electricity damage is made and inhales wave plate.
C. according to quality than polycrystalline iron powder：Epoxy resin：Solvent or diluent=1.5:0.5:1 configuration coating, is put into emulsifier and divides
20min is dissipated, curing agent, epoxy resin are added in finely dispersed coating：Curing agent=5:1, stir 5min.It will be added with
The coating even application of curing agent is on foam, spraying weight 2000g/m2, when drying 5 is small at 50 DEG C, magnetic loss is made and inhales
Wave plate.
D. after the electricity damage prepared being inhaled wave plate laying, one layer of epoxy jelly membrane is laid on it, is then laid on it again
The magnetic loss prepared inhales wave plate, and electricity damage inhales wave plate and magnetic loss inhales wave plate and is alternately laid with successively and is laid with epoxy jelly membrane therebetween,
When absorbing material thickness reaches design thickness, absorbing material hot briquetting that will complete obtains wideband interlayer absorbing material.
Embodiment 3
The present embodiment provides a kind of explosion-proof broadband absorbing composite materials, are layer structure, including the reflection contacted successively
Substrate, wideband interlayer absorbing material and explosion-proof covering.
Its preparation method is substantially consistent with embodiment 1, the difference is that：
2) prepares wideband interlayer absorbing material：
A. using carbon black as wave absorbing agent, carbon black is put into crucible, is added in sintering oven, it is small that 5 are heated at 300 DEG C
When.Take out carbon black with the concentrated sulfuric acid impregnate 1.5 it is small when, removal the concentrated sulfuric acid simultaneously cleaned 3 times with acetone, the carbon black after cleaning was placed on
When naturally dry 24 is small on filter paper.
B. by tetrahydrofuran, acetone and epoxy jelly membrane according to 1.8:1.8:1 mass ratio is configured to glue, at the uniform velocity stirs
20min treats that glue is completely dissolved.Carbon black weight is calculated with reference to the formula of embodiment 1, the concentration of carbon black is respectively 0.05%,
0.1%th, 0.2%, 0.3%, 0.4%, 0.5%.
Load weighted carbon black is added in and disperses 20min in glue.After carbon black uniformly disperses, according to 1.2kg/m2Dosage will
The glue for being mixed with carbon black is coated uniformly on foam, is marked respectively.The foam for being painted with carbon black is divulged information in air drying
It is cool under environment to put for 24 hours, electricity damage is made and inhales wave plate.
C. according to quality than hydroxy iron powder absorbent：Epoxy resin：Solvent or diluent=2.5:1.5:1 configuration coating, is put into emulsification
Disperse 10min in agent, curing agent, epoxy resin are added in finely dispersed coating：Curing agent=5:1, stir 5min.
By added with the coating even application of curing agent on foam, spraying weight 2000g/m2, when drying 5 is small at 50 DEG C, it is made
Magnetic loss inhales wave plate.
D. after the electricity damage prepared being inhaled wave plate laying, one layer of epoxy jelly membrane is laid on it, is then laid on it again
The magnetic loss prepared inhales wave plate, and electricity damage inhales wave plate and magnetic loss inhales wave plate and is alternately laid with successively and is laid with epoxy jelly membrane therebetween,
When absorbing material thickness reaches design thickness, absorbing material hot briquetting that will complete obtains wideband interlayer absorbing material.
Experimental example
With reference to performance test data to the composite material that is provided in the embodiment of the present invention in terms of explosion-proof and inhale ripple
Effect is evaluated.
First, Stealth Fighter：
The composite material prepared in embodiment 1 is used into GJB 2038A-2011《Radar absorbing reflectance test side
Method》Its Stealth Fighter is tested, as a result as shown in Figure 3 and Figure 4；
It is low that composite material reflectivity in the range of 1.98GHz~18GHz is can be seen that from test result Fig. 3 and Fig. 4
In -10dB, cover S-band, C-band, X-band, Ku wave bands, thus illustrate that the composite material has broadband absorbing performance.
2nd, explosion-proof performance
The composite material prepared in embodiment 1 is used into GB 3836-2010《Explosive atmosphere》Test its explosion-proof performance；
Test result shows the explosive-proof grade of the composite material as dIIBT4, wherein, d is explosion-proof symbol, and II B is can be with
In the explosive mixture environment formed using II B classes gas and air；T4 is that the ignition temperature of explosive gas is T4 groups,
Temperature t scopes are 135 DEG C of ﹤ t≤200 DEG C.
Although illustrate and describing the present invention with specific embodiment, it will be appreciated that without departing substantially from the present invention's
Many other change and modification can be made in the case of spirit and scope.It is, therefore, intended that in the following claims
Including belonging to all such changes and modifications in the scope of the invention.
Claims (10)
1. a kind of preparation method of explosion-proof broadband absorbing composite material, which is characterized in that it includes：
Explosion-proof covering is prepared using quartz fibre and unsaturated-resin；
After wave absorbing agent is calcined 3~5h at 300~500 DEG C, 0.5~1.5h is impregnated in strong acid, after washing is dry, will be handled
The wave absorbing agent afterwards is dispersed in glue；The glue containing wave absorbing agent of gained is made coated on foam substrate again
It obtains electric damage and inhales wave plate；
The coating that ripple powder, epoxy resin and solvent or diluent are inhaled containing metal is scattered in emulsifier, after adding curing agent, is inhaled
Ripple coating；By the antiradar coatings coated on foam substrate, obtained magnetic loss inhales wave plate；
After the electricity damage suction wave plate, epoxy jelly membrane, magnetic loss suction wave plate are sequentially overlapped laying, hot briquetting obtains wideband
Interlayer absorbing material；And
The wideband interlayer absorbing material and the explosion-proof covering are fitted in reflected bottom plate successively.
2. the preparation method of explosion-proof broadband absorbing composite material according to claim 1, which is characterized in that the wave absorbing agent
Including at least one of carbon fiber, carbon black, carbon nanotubes and barium titanate；The grain size of the wave absorbing agent is 1~100nm.
3. the preparation method of explosion-proof broadband absorbing composite material according to claim 1, which is characterized in that the metal is inhaled
Ripple powder includes any one in ferrite, iron carbonyl, polycrystalline iron, metal powder, alloyed powder and nitrided iron.
4. the preparation method of explosion-proof broadband absorbing composite material according to claim 1, which is characterized in that the foam-based
Material includes at least one of Polymethacrylimide, polyvinyl chloride and polypropylene.
5. the preparation method of explosion-proof broadband absorbing composite material according to claim 1, which is characterized in that described in preparation
Electricity damage inhale wave plate in, the glue be by by tetrahydrofuran, acetone and epoxy jelly membrane according to mass ratio 1.2~1.8：1.2~
1.8：1 mixed preparing obtains.
6. the preparation method of explosion-proof broadband absorbing composite material according to claim 1, which is characterized in that described in preparation
Magnetic loss is inhaled in wave plate, and the coating is by the way that metal is inhaled ripple powder, epoxy resin and solvent or diluent according to mass ratio 1.5~2.5：0.5
~1.5：1 mixed preparing obtains.
7. the preparation method of explosion-proof broadband absorbing composite material according to claim 1, which is characterized in that the explosion-proof illiteracy
Skin is prepared by molding mode with pressure, and the briquetting pressure with pressure is 0.8~1.2MPa, and the Vacuumizing bag pressure time is small for 2~6
When, temperature is 80 DEG C~160 DEG C.
8. the preparation method of explosion-proof broadband absorbing composite material according to claim 1, which is characterized in that the wideband folder
The thickness of layer absorbing material is 2~50mm.
9. the preparation method of explosion-proof broadband absorbing composite material according to claim 1, which is characterized in that the reflection bottom
There is the rubber-ferrite reflecting layer prepared by continuous magnetisable coating wave-absorption fibre, the continuous magnetisable coating wave-absorption fibre on plate
Including in magnetisable coating carbon fiber, SiC Fiber with Magnetic Coating Layer, magnetisable coating glass fibre and magnetisable coating organic fiber
Any one.
10. a kind of explosion-proof broadband absorbing composite material as obtained by claim 1~9 any one of them preparation method,
It is characterized in that, the explosion-proof broadband absorbing composite material is layer structure, including reflection substrate, the wideband folder contacted successively
Layer absorbing material and the explosion-proof covering.
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| CN109551757B (en) * | 2018-10-18 | 2020-12-22 | 上海无线电设备研究所 | Preparation method of flexible terahertz wave-absorbing material |
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| CN110272675A (en) * | 2019-05-16 | 2019-09-24 | 宿迁南航新材料与装备制造研究院有限公司 | A kind of preparation method of radar and infrared compatible camouflage material |
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| CN110699968B (en) * | 2019-09-12 | 2022-05-24 | 巩义市泛锐熠辉复合材料有限公司 | Wave-absorbing composite foam and preparation method thereof |
| CN110791138A (en) * | 2019-09-23 | 2020-02-14 | 成都普瑞斯特新材料有限公司 | Electromagnetic wave unidirectional conduction coating and preparation method thereof |
| CN111559133A (en) * | 2020-05-29 | 2020-08-21 | 北京环境特性研究所 | Wave absorbing/wave transmitting integrated material and preparation method thereof |
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| CN115433302A (en) * | 2022-10-08 | 2022-12-06 | 成都雷隐科技有限公司 | Preparation method of modified GMI material |
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