CN110293713A - A kind of New Radar Absorbing composite material and preparation method - Google Patents
A kind of New Radar Absorbing composite material and preparation method Download PDFInfo
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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
- 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- 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
- B32B5/22—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/20—All layers being fibrous or filamentary
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/02—Composition of the impregnated, bonded or embedded layer
- B32B2260/021—Fibrous or filamentary layer
- B32B2260/023—Two or more layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/04—Impregnation, embedding, or binder material
- B32B2260/046—Synthetic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/106—Carbon fibres, e.g. graphite fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
- B32B2264/10—Inorganic particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
- B32B2264/10—Inorganic particles
- B32B2264/102—Oxide or hydroxide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
- B32B2264/10—Inorganic particles
- B32B2264/107—Ceramic
- B32B2264/108—Carbon, e.g. graphite particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
- B32B2264/12—Mixture of at least two particles made of different materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
- B32B2307/212—Electromagnetic interference shielding
Abstract
The invention discloses a kind of New Radar Absorbing composite material and preparation methods.The New Radar Absorbing composite material passes through the composite high-performance PBO/ epoxy resin composite material outside CF/ epoxy resin composite material, PBO/ epoxy resin composite material wave transparent function is integrated in CF/ epoxy resin composite material, and nano wave-absorbing material is added in PBO reinforced epoxy composite material, make electromagnetic wave when through PBO/ epoxy resin composite material, it realizes and is absorbed when penetrating, and after incident electromagnetic wave enters composite inner, strong reflection of the carbon-fibre reinforced epoxy resin composite material composite material to electromagnetic wave, electromagnetic wave is set to again pass by PBO/ epoxy resin composite material, realize double absorption, achieve the effect that wave-absorbing and camouflage.Therefore, the New Radar Absorbing composite material in the present invention is expected to can be used as excellent combination property and the good structure-function integrated material of Stealth Fighter is applied to aerospace field.
Description
Technical field
The invention belongs to technical field of composite materials, in particular to are mainly used in the fields such as Aeronautics and Astronautics, military project
A kind of New Radar Absorbing composite material and preparation method.
Technical background
In the military technology that the world today gives priority to, stealth technology is one of hot spot in recent years, modern improving
It plays an important role in terms of the penetration ability and survival ability of weapons, which results in the height weights of each military power, the world
Depending on.Therefore, each state is all falling over each other to develop and develop the material with excellent Stealth Fighter for defence and military and weapon dress
It is standby.
Currently, classify according to material forming process and bearing capacity, absorbing material can be divided into coating-type absorbing materials and
Structural absorbing mater ials.The former be by all kinds of absorbents, including metal or alloy powder, ferrite and conductive fiber etc. with it is viscous
After mixture mixing, it is coated on target surface and forms microwave absorbing coating.It is narrow with absorption band, use and maintenance is cumbersome, increases
A series of disadvantages such as vehicle mass, easy to fall off.And structural absorbing mater ials have the dual function for carrying and inhaling wave, lead to
It is often to be formed by connecting by various structures such as wave permeation layer, absorbed layer and reflecting layer by certain moulding process.Since its is outstanding
Can bearing structure, the advantages that wave-sucking performance is strong and designability is strong, widely studied and applied.
Absorbent structure composite material generally uses hybrid composite.Superficial layer is generally wave permeation layer, very thin, and being used for will
Electromagnetic wave penetrates；Middle layer is then to inhale wave layer, is made of Wave suction composite material, generally nano wave-absorption particulate reinforcement resin base
Composite material is used for electromagnetic wave absorption；Bottom is reflecting layer, is made of carbon fibre composite or metallic film, will not inhaled
The electromagnetic wave of receipts returns, and further progress absorbs.Currently, absorbent structure composite material has been applied to advanced stealthy fighter plane
In such as F-22, be the tip materials that each military power competitively develops.
Summary of the invention
It is an object of the present invention to provide a kind of New Radar Absorbing composite material and preparation methods, and it is good to obtain Stealth Fighter
Structure-function integrated material both has high intensity, high-modulus, the strong reflection to electromagnetic wave, at the same time as load knot
Structure.
Technical solution is as follows:
A kind of New Radar Absorbing composite material, which is characterized in that pass through high property compound outside CF/ epoxy resin composite material
Energy PBO/ epoxy resin composite material, PBO/ epoxy resin composite material wave transparent function are integrated in CF/ epoxy resin composite material
In, and nano wave-absorbing material is added in PBO reinforced epoxy composite material, so that electromagnetic wave is being penetrated PBO/ epoxy resin
When composite material, realizes and absorbed when penetrating, and after incident electromagnetic wave enters composite inner, it is carbon-fibre reinforced
Strong reflection of the epoxy resin composite material composite material to electromagnetic wave, makes electromagnetic wave again pass by PBO/ epoxy resin composite material,
Realize double absorption.
Preferably, the nano wave-absorbing material includes any one in ferrite, carbon nanotube, graphene or silicon carbide
Kind is several.
A kind of preparation method of New Radar Absorbing composite material, comprising the following steps:
(1) epoxy resin solution A is prepared, and epoxy-resin systems is added several times in the acetone of boiling, and heating shape is kept
State simultaneously continues to stir, and 56~58 DEG C of heating temperature, stirring rate is 500r/min~1500r/min, and flow back 30~50min, cold
But to upper layer clear solution after room temperature, is taken, the mass fraction of epoxy resin is 30~60%；
Epoxy resin solution B is prepared, and in solution A preparation process, nano wave-absorbing material is added, when heating stirring flows back
Ultrasonic disperse 60min-120min is carried out, is dispersed in nano wave-absorbing material in epoxy resin solution, as solution B,
Middle nano wave-absorbing material additive amount is 3%~20%, and partial size is 1~100nm；
(2) preparation of prepreg, continuous P BO fiber, carbon fiber under the action of tractive force, by filling epoxy resin third
The steeping vat of ketone solution, by adjusting the glue content of the spreading roller control fiber surface at nearly winding end；After impregnation, by fiber
It is uniformly wrapped on homemade mold, mode is winding of single layer, and then the mold for teasing fiber is placed in vacuum drying oven
It is dried 50~60 minutes at 40 DEG C, wherein when carbon fiber winding, made when pbo fiber is wound using epoxy resin solution A
With epoxy resin solution B, impregnation temperature is room temperature, and hauling speed is 0.5~1.2m/min, rubber scraping bar spacing is 0.3~
0.8mm；
(3) preparation of composite material increases 5-10 piece carbon-fibre reinforced epoxy resin prepreg and 5-15 piece PBO fiber
Strong epoxy prepreg is put into processing molding in hot press moulding molding equipment, cooling, demoulding, and it is multiple to obtain a kind of New Radar Absorbing
Condensation material.
Further, in step (3), hot press moulding condition are as follows: 80 DEG C~150 DEG C of preheating temperature, processing the time be 30~
60 minutes；160~180 DEG C of gelling temperature, the processing time is 50~80 minutes；Solidifying pressure is 0.5~1MPa, and temperature is protected
195~205 DEG C are held, the processing time is 3~4 hours.
Preferably, the nano wave-absorbing material includes any one in ferrite, carbon nanotube, graphene or silicon carbide
Kind is several.
Preferably, the carbon fiber is one of T300, T700, T800 or T1000.
Preferably, the epoxy-resin systems include epoxy resin, curing agent and promotor, and epoxy-resin systems stick
Degree is not less than 300mPas.
A kind of New Radar Absorbing composite material and preparation method provided by the invention, by CF/ epoxy resin composite wood
Expect outer composite high-performance PBO/ epoxy resin composite material, PBO/ epoxy resin composite material wave transparent function is integrated in CF/ epoxy
In resin composite materials, and nano wave-absorbing material is added in PBO reinforced epoxy composite material, is penetrating electromagnetic wave
When PBO/ epoxy resin composite material, realizes and absorbed when penetrating, and after incident electromagnetic wave enters composite inner,
Strong reflection of the carbon-fibre reinforced epoxy resin composite material composite material to electromagnetic wave, makes electromagnetic wave again pass by PBO/ epoxy
Resin composite materials realize double absorption, achieve the effect that wave-absorbing and camouflage.Therefore, the New Radar Absorbing composite material in the present invention
It is expected that can be used as excellent combination property and the good structure-function integrated material of Stealth Fighter is applied to aerospace field.
Specific embodiment
To make those skilled in the art more fully understand technical solution of the present invention, below to one kind provided by the invention
New Radar Absorbing composite material and preparation method is described in detail.Following embodiment be merely to illustrate the present invention not for
It limits the scope of the invention.
New Radar Absorbing composite material provided by the invention is a kind of continuous carbon fibre, continuous P BO fiber reinforced epoxy resin
Based composites are presoaked by 5-10 piece pbo fiber reinforced epoxy prepreg and 5-15 piece carbon-fibre reinforced epoxy resin
Material, forms to obtain by hot press moulding；For pbo fiber reinforced epoxy composite material upper, carbon-fibre reinforced epoxy resin is multiple
Condensation material is under, the visible following examples of specific preparation process.
Embodiment 1
(1) epoxy resin solution A is prepared: epoxy-resin systems being added in the acetone of boiling several times, is kept heating shape
State simultaneously continues to stir, and heating and temperature control is at 56~58 DEG C, stirring rate 1000r/min, and flow back 45min, is cooled to room temperature
Afterwards, upper layer clear solution is taken.When preparing solution, the mass fraction of epoxy resin is 48%；
Epoxy resin solution B is prepared: in solution A preparation process, nano wave-absorbing material is added, when heating stirring flows back,
Ultrasonic disperse 80min is carried out, is dispersed in nano wave-absorbing material in epoxy resin solution, as solution B, wherein nanometer
Absorbing material is nanometer ferrite, partial size 15nm, additive amount 8%；
(2) preparation of prepreg: continuous P BO fiber, T700 carbon fiber under the action of tractive force, by filling asphalt mixtures modified by epoxy resin
The steeping vat of rouge acetone soln, by adjusting the glue content of the spreading roller control fiber surface at nearly winding end；It, will after impregnation
Fiber is uniformly wrapped on homemade mold, and mode is winding of single layer.Then the mold for teasing fiber vacuum is placed in dry
It is dried 50 minutes at 40 DEG C in case.Wherein, when carbon fiber winding, made when pbo fiber is wound using epoxy resin solution A
With epoxy resin solution B.Impregnation temperature is room temperature, and hauling speed 1.0m/min, rubber scraping bar spacing is 0.5mm.
(3) 10 carbon-fibre reinforced epoxy resin prepregs and 10 pbo fibers are enhanced ring by the preparation of composite material
Oxygen resin prepreg material is put into processing molding in hot press moulding molding equipment, cooling, demoulding, and it is multiple that a kind of New Radar Absorbing can be obtained
Condensation material.Hot press moulding condition are as follows: 80 DEG C~150 DEG C of preheating temperature, the processing time is 30~60 minutes.Gelling temperature 160
~180 DEG C, the processing time is 50~80 minutes.Solidifying pressure is 0.5~1MPa, and temperature is kept for 195~205 DEG C, handles the time
It is 3~4 hours.
Embodiment 2
(1) epoxy resin solution A is prepared: epoxy-resin systems being added in the acetone of boiling several times, is kept heating shape
State simultaneously continues to stir, and heating and temperature control is at 56~58 DEG C, stirring rate 1000r/min, and flow back 40min, is cooled to room temperature
Afterwards, upper layer clear solution is taken.When preparing solution, the mass fraction of epoxy resin is 46%；
Epoxy resin solution B is prepared: in solution A preparation process, nano wave-absorbing material is added, when heating stirring flows back,
Ultrasonic disperse 90min is carried out, is dispersed in nano wave-absorbing material in epoxy resin solution, as solution B, wherein nanometer
Absorbing material is carbon nanotube, partial size 15nm, additive amount 6%；
(2) preparation of prepreg: continuous P BO fiber, T800 carbon fiber under the action of tractive force, by filling asphalt mixtures modified by epoxy resin
The steeping vat of rouge acetone soln, by adjusting the glue content of the spreading roller control fiber surface at nearly winding end；It, will after impregnation
Fiber is uniformly wrapped on homemade mold, and mode is winding of single layer.Then the mold for teasing fiber vacuum is placed in dry
It is dried 50 minutes at 40 DEG C in case.Wherein, when carbon fiber winding, made when pbo fiber is wound using epoxy resin solution A
With epoxy resin solution B.Impregnation temperature is room temperature, and hauling speed 0.8m/min, rubber scraping bar spacing is 0.5mm.
(3) preparation of composite material, by 10 carbon-fibre reinforced epoxy resin prepregs and 8 pbo fiber reinforced epoxies
Resin prepreg material is put into processing molding in hot press moulding molding equipment, cooling, demoulding, and it is compound that a kind of New Radar Absorbing can be obtained
Material.Hot press moulding condition are as follows: 80 DEG C~150 DEG C of preheating temperature, the processing time is 30~60 minutes.Gelling temperature 160~
180 DEG C, the processing time is 50~80 minutes.Solidifying pressure be 0.5~1MPa, temperature keep 195~205 DEG C, processing the time be
3~4 hours.
Embodiment 3
(1) epoxy resin solution A is prepared: epoxy-resin systems being added in the acetone of boiling several times, is kept heating shape
State simultaneously continues to stir, and heating and temperature control is at 56~58 DEG C, stirring rate 1200r/min, and flow back 50min, is cooled to room temperature
Afterwards, upper layer clear solution is taken.When preparing solution, the mass fraction of epoxy resin is 50%；
Epoxy resin solution B is prepared: in solution A preparation process, nano wave-absorbing material is added, when heating stirring flows back,
Ultrasonic disperse 100min is carried out, is dispersed in nano wave-absorbing material in epoxy resin solution, as solution B, wherein nanometer
Absorbing material is nanometer ferrite, partial size 20nm, additive amount 5%；
(2) preparation of prepreg: continuous P BO fiber, T700 carbon fiber under the action of tractive force, by filling asphalt mixtures modified by epoxy resin
The steeping vat of rouge acetone soln, by adjusting the glue content of the spreading roller control fiber surface at nearly winding end；It, will after impregnation
Fiber is uniformly wrapped on homemade mold, and mode is winding of single layer.Then the mold for teasing fiber vacuum is placed in dry
It is dried 50 minutes at 40 DEG C in case.Wherein, when carbon fiber winding, made when pbo fiber is wound using epoxy resin solution A
With epoxy resin solution B.Impregnation temperature is room temperature, and hauling speed 1.0m/min, rubber scraping bar spacing is 0.5mm.
(3) preparation of composite material, by 8 carbon-fibre reinforced epoxy resin prepregs and 12 pbo fiber reinforced epoxies
Resin prepreg material is put into processing molding in hot press moulding molding equipment, cooling, demoulding, and it is compound that a kind of New Radar Absorbing can be obtained
Material.Hot press moulding condition are as follows: 80 DEG C~150 DEG C of preheating temperature, the processing time is 30~60 minutes.Gelling temperature 160~
180 DEG C, the processing time is 50~80 minutes.Solidifying pressure be 0.5~1MPa, temperature keep 195~205 DEG C, processing the time be
3~4 hours.
Embodiment 4
(1) epoxy resin solution A is prepared: epoxy-resin systems being added in the acetone of boiling several times, is kept heating shape
State simultaneously continues to stir, and heating and temperature control is at 56~58 DEG C, stirring rate 800r/min, and flow back 35min, is cooled to room temperature
Afterwards, upper layer clear solution is taken.When preparing solution, the mass fraction of epoxy resin is 42%；
Epoxy resin solution B is prepared: in solution A preparation process, nano wave-absorbing material is added, when heating stirring flows back,
Ultrasonic disperse 100min is carried out, is dispersed in nano wave-absorbing material in epoxy resin solution, as solution B, wherein nanometer
Absorbing material is nanometer silicon carbide, partial size 30nm, additive amount 8%；
(2) preparation of prepreg: continuous P BO fiber, T300 carbon fiber under the action of tractive force, by filling asphalt mixtures modified by epoxy resin
The steeping vat of rouge acetone soln, by adjusting the glue content of the spreading roller control fiber surface at nearly winding end；It, will after impregnation
Fiber is uniformly wrapped on homemade mold, and mode is winding of single layer.Then the mold for teasing fiber vacuum is placed in dry
It is dried 50 minutes at 40 DEG C in case.Wherein, when carbon fiber winding, made when pbo fiber is wound using epoxy resin solution A
With epoxy resin solution B.Impregnation temperature is room temperature, and hauling speed 1.0m/min, rubber scraping bar spacing is 0.5mm.
(3) 10 carbon-fibre reinforced epoxy resin prepregs and 10 pbo fibers are enhanced ring by the preparation of composite material
Oxygen resin prepreg material is put into processing molding in hot press moulding molding equipment, cooling, demoulding, and it is multiple that a kind of New Radar Absorbing can be obtained
Condensation material.Hot press moulding condition are as follows: 80 DEG C~150 DEG C of preheating temperature, the processing time is 30~60 minutes.Gelling temperature 160
~180 DEG C, the processing time is 50~80 minutes.Solidifying pressure is 0.5~1MPa, and temperature is kept for 195~205 DEG C, handles the time
It is 3~4 hours.
Example of the invention is explained in detail above in conjunction with embodiment, but the present invention is not limited to examples detailed above,
Within the knowledge of a person skilled in the art, it can also make without departing from the purpose of the present invention
Various change, also should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of New Radar Absorbing composite material, which is characterized in that pass through the composite high-performance outside CF/ epoxy resin composite material
PBO/ epoxy resin composite material, PBO/ epoxy resin composite material wave transparent function are integrated in CF/ epoxy resin composite material,
And nano wave-absorbing material is added in PBO reinforced epoxy composite material, make electromagnetic wave compound through PBO/ epoxy resin
When material, realizes and absorbed when penetrating, and after incident electromagnetic wave enters composite inner, carbon-fibre reinforced epoxy resin
Strong reflection of the composite material to electromagnetic wave makes electromagnetic wave again pass by PBO/ epoxy resin composite material, realizes two
Secondary absorption.
2. New Radar Absorbing composite material according to claim 1, which is characterized in that the nano wave-absorbing material includes iron oxygen
Any one or a few in body, carbon nanotube, graphene or silicon carbide.
3. a kind of preparation method of New Radar Absorbing composite material, which comprises the following steps:
(1) epoxy resin solution A is prepared, and epoxy-resin systems is added several times in the acetone of boiling, keeps heated condition simultaneously
Lasting stirring, 56~58 DEG C of heating temperature, stirring rate is 500r/min~1500r/min, and flow back 30~50min, is cooled to
After room temperature, upper layer clear solution is taken, the mass fraction of epoxy resin is 30~60%；
Epoxy resin solution B is prepared, and in solution A preparation process, nano wave-absorbing material is added, heating stirring is surpassed when flowing back
Sound disperses 60min-120min, is dispersed in nano wave-absorbing material in epoxy resin solution, as solution B, wherein nanometer
Absorbing material additive amount is 3%~20%, and partial size is 1~100nm；
(2) preparation of prepreg, continuous P BO fiber, carbon fiber under the action of tractive force, by filling epoxy resin acetone soln
Steeping vat, by adjusting the glue content of the spreading roller control fiber surface at nearly winding end；After impregnation, fiber is uniformly twined
It is wound on homemade mold, mode is winding of single layer, and then the mold for teasing fiber is placed in vacuum drying oven at 40 DEG C
Drying 50~60 minutes, wherein when carbon fiber winding, use epoxy resin when pbo fiber is wound using epoxy resin solution A
Solution B, impregnation temperature are room temperature, and hauling speed is 0.5~1.2m/min, and rubber scraping bar spacing is 0.3~0.8mm；
(3) preparation of composite material, by 5-10 piece carbon-fibre reinforced epoxy resin prepreg and 5-15 piece pbo fiber reinforced epoxy
Resin prepreg material is put into processing molding in hot press moulding molding equipment, cooling, demoulding, obtains a kind of New Radar Absorbing composite material.
4. the preparation method of New Radar Absorbing composite material according to claim 3, which is characterized in that in step (3), high temperature mould
Press strip part are as follows: 80 DEG C~150 DEG C of preheating temperature, the processing time is 30~60 minutes；160~180 DEG C of gelling temperature, when processing
Between be 50~80 minutes；Solidifying pressure is 0.5~1MPa, and temperature is kept for 195~205 DEG C, and the processing time is 3~4 hours.
5. the preparation method of New Radar Absorbing composite material according to claim 4, which is characterized in that the nano wave-absorbing material
Including any one or a few in ferrite, carbon nanotube, graphene or silicon carbide.
6. the preparation method of New Radar Absorbing composite material according to claim 4, which is characterized in that the carbon fiber is
One of T300, T700, T800 or T1000.
7. the preparation method of New Radar Absorbing composite material according to claim 6, which is characterized in that the epoxy-resin systems
Including epoxy resin, curing agent and promotor, the viscosity of epoxy-resin systems is not less than 300mPas.
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| CN111037781A (en) * | 2019-12-26 | 2020-04-21 | 航天特种材料及工艺技术研究所 | Wave-absorbing prepreg and preparation method thereof |
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| CN104387769A (en) * | 2014-11-17 | 2015-03-04 | 大连理工大学 | Bismaleimide resin-based microwave-absorbing composite material |
| CN104404814A (en) * | 2014-09-10 | 2015-03-11 | 华南理工大学 | Wave-absorbing paper and preparation method and application thereof |
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| CN104404814A (en) * | 2014-09-10 | 2015-03-11 | 华南理工大学 | Wave-absorbing paper and preparation method and application thereof |
| CN104387769A (en) * | 2014-11-17 | 2015-03-04 | 大连理工大学 | Bismaleimide resin-based microwave-absorbing composite material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111037781A (en) * | 2019-12-26 | 2020-04-21 | 航天特种材料及工艺技术研究所 | Wave-absorbing prepreg and preparation method thereof |
| CN111037781B (en) * | 2019-12-26 | 2022-06-24 | 航天特种材料及工艺技术研究所 | Wave-absorbing prepreg and preparation method thereof |
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