CN106739364A - A kind of aramid fiber/Al alloy composite and its preparation method and application - Google Patents
A kind of aramid fiber/Al alloy composite and its preparation method and application Download PDFInfo
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- CN106739364A CN106739364A CN201611065820.4A CN201611065820A CN106739364A CN 106739364 A CN106739364 A CN 106739364A CN 201611065820 A CN201611065820 A CN 201611065820A CN 106739364 A CN106739364 A CN 106739364A
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- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/088—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyamides
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- B—PERFORMING OPERATIONS; TRANSPORTING
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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
- B32B15/00—Layered products comprising a layer of metal
- B32B15/14—Layered products comprising a layer of metal next to a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
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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
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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
- B32B37/10—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
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/16—Drying; Softening; Cleaning
- B32B38/164—Drying
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
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- B32B2250/00—Layers arrangement
- B32B2250/42—Alternating layers, e.g. ABAB(C), AABBAABB(C)
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- 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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- 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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- 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
- B32B2262/0261—Polyamide fibres
- B32B2262/0269—Aromatic polyamide fibres
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- B32B2307/206—Insulating
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- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/306—Resistant to heat
- B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
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- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/308—Heat stability
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- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/71—Resistive to light or to UV
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B2605/18—Aircraft
Abstract
It is the multiple-layer stacked structure being alternately compounded to form successively by the aramid fiber material layer of N+1 layers of aluminium alloy flaggy and N layer the invention discloses a kind of aramid fiber/Al alloy composite；Wherein, the bottom of the aramid fiber/Al alloy composite and the superiors are aluminium alloy flaggy, and 1≤N≤8 and N are integer.The invention also discloses the preparation method of the aramid fiber/Al alloy composite, first aramid fiber material and aluminium alloy are pre-processed, according still further to composite structure bond together, most obtained through hot-forming afterwards.Aramid fiber/Al alloy composite of the invention, not only with good high high-temp stability, chemical stability, fire resistance, electrical insulating property and radiation resistance, high specific strength, high specific stiffness, excellent anticorrosive and fatigue performance also with metal；And its relative density is low, can be used to make airframe, wing etc. in field of aerospace, had broad application prospects in airliner, warplane and unmanned plane.
Description
Technical field
The present invention relates to a kind of composite of space flight and aviation, more particularly to a kind of aramid fiber/Al alloy composite and
Its preparation method and application.
Background technology
In recent years, composite is more and more extensive in field of aerospace application, as field items technology is constantly entered
Step, to composite property requirement also more and more higher.
Aramid fiber material is the extraordinary new material of a kind of high-performance, high added value, and it not only has excellent physics
Mechanical performance, also with good high high-temp stability, chemical stability, anti-flammability, electrical insulating property and radiation resistance, therefore,
Aramid fiber material is made into composite will also have excellent performance.Domestic patent 201510295801.X discloses one
The preparation method of aramid fiber/polyethylene composite board is planted, domestic patent 201410529669.X discloses a kind of aramid fiber/glass fibre
Composite sheet preparation method, but such composite lacks the characteristics such as metal high specific strength, high specific stiffness and corrosion resistance, should
It is limited with field, it is difficult to apply in field of aerospace.
The content of the invention
The technical problems to be solved by the invention are to overcome the shortcomings of to be mentioned and defect in background above technology, there is provided one
Kind of aramid fiber/Al alloy composite and preparation method thereof, the composite have concurrently the high specific strength of metal material, high specific stiffness and
Corrosion resistance, and the features such as the lightweight of special fibre material, high tenacity and excellent fatigue performance, in field of aerospace
In have broad application prospects.
In order to solve the above technical problems, technical scheme proposed by the present invention is：
A kind of aramid fiber/Al alloy composite, is handed over successively by the aramid fiber material layer of N+1 layers of aluminium alloy flaggy and N layer
For the multiple-layer stacked structure being compounded to form, wherein, the bottom of the aramid fiber/Al alloy composite and the superiors are aluminium conjunction
Golden plate layer, 1≤N≤8 and N are integer.
Above-mentioned aramid fiber/Al alloy composite, it is preferred that the surface of the aluminium alloy flaggy is through anodized
Cross；Aramid fiber material layer be by aramid fiber material with being impregnated after coupling agent surface treatment, in immersion epoxy-resin systems, heat
Obtained after molded.By the surface of the aluminium alloy plate through anodized mistake, the corrosion resistance of aluminium alloy can be increased,
The usage cycles of composite can be improved.
Used as a total inventive concept, the present invention also provides a kind of preparation method of aramid fiber/Al alloy composite, wraps
Include following steps：
(1) after carrying out anodized to aluminium alloy plate, washing is dried, the aluminium alloy plate for being pre-processed；
(2) after being surface-treated with coupling agent to aramid fiber material, impregnated in immersion epoxy-resin systems, obtained virtue
Synthetic fibre epoxy prepreg；
(3) the aramid fiber epoxy prepreg is carried out into prebake；
(4) superposition according to one layer of aramid fiber epoxy prepreg of the another layer prebake of aluminium alloy plate of pretreatment is suitable
Sequence, alternate multiple-layer stacked structure successively is paved into by the aramid fiber epoxy prepreg of the aluminium alloy plate of pretreatment and prebake,
Wherein, the bottom of multiple-layer stacked structure and the superiors are the aluminium alloy plate of pretreatment；
(5) the multiple-layer stacked structure is carried out hot-forming, that is, obtains the aramid fiber/Al alloy composite.
In above-mentioned preparation method, aramid fiber material is first surface-treated with coupling agent, then immerse epoxy-resin systems
Middle dipping, it is ensured that the adhesion strength between aramid fiber material layer and aluminium alloy flaggy, enhances composite interlayer adhesion.
Above-mentioned preparation method, it is preferred that in the step (2), the matter of aramid fiber epoxy prepreg epoxy resin
Amount control is 5%~65%.It is further preferred that the quality control of aramid fiber epoxy prepreg epoxy resin 25%~
45%.The content of the epoxy resin in control aramid fiber epoxy prepreg can ensure viscous between aramid fiber material and aluminium alloy plate
The overall performance of knotting strength and composite, it is to avoid epoxy resin content is too low to cause aramid fiber to infiltrate not exclusively, also avoids ring
Oxygen resin content is too high to cause curable epoxide not exclusively, influences the overall performance of composite.
Above-mentioned preparation method, it is preferred that every layer of thickness of aluminium alloy plate is 0.01~2.00mm, and every layer of aramid fiber epoxy is pre-
Leaching thickness of feed layer is 0.01~5.00mm.It is further preferred that every layer of thickness of aluminium alloy plate is 0.10~0.50mm, every layer pre-
The thickness of the aramid fiber epoxy prepreg of drying is 0.08~1.00mm.
Above-mentioned preparation method, it is preferred that the specific operation process of the step (4) is：One layer for first having pre-processed
Aluminium alloy plate single spreading sticks agent, and then pre-baked one layer of aramid fiber epoxy prepreg be stacked in the aluminium alloy plate of glue one side
On, then the aluminium alloy plate of the glutinous agent of one layer of single spreading is covered on pre-baked aramid fiber epoxy prepreg, form three layers of superposition
Structure.
Above-mentioned preparation method, it is preferred that the specific operation process of the step (4) is：One layer for first having pre-processed
Aluminium alloy plate single spreading sticks agent, and then pre-baked one layer of aramid fiber epoxy prepreg be stacked in the aluminium alloy plate of glue one side
On, then the two-sided aluminium alloy plate for scribbling adhesive is stacked on the pre-baked aramid fiber epoxy prepreg, so it is repeated,
Until being superimposed to the required number of plies, the overlaying structure of multilayer is obtained；Wherein the superiors of overlaying structure are aluminium alloy flaggy.
Above-mentioned preparation method, it is preferred that the adhesive is polysulfones epoxy resin adhesive or Epoxy nylon adhesive.
Above-mentioned preparation method, it is preferred that in the step (3), prebake is the preliminary drying in 60 DEG C~80 DEG C of environment
10min~60min；
In the step (5), it is hot-forming refer to temperature be 60 DEG C~300 DEG C, pressure be 0.1MPa~20.0MPa bars
30~90min of compacting is carried out under part.
Above-mentioned preparation method, it is preferred that the coupling agent is selected from any one in KH550, KH560, KH570.
Used as a total inventive concept, the present invention also provides what a kind of above-mentioned or above-mentioned preparation method was prepared
Application of the aramid fiber/Al alloy composite in aerospace structural material.
The present invention carries out aramid fiber and aluminium alloy to be combined resulting aramid fiber/Al alloy composite, not only with good
High high-temp stability, chemical stability, fire resistance, electrical insulating property and radiation resistance, also with the high than strong of metal
Degree, high specific stiffness, excellent anticorrosive and fatigue performance；The relative density of the composite is smaller than fine aluminium, more meets
Current field of aerospace lightweight trend, the advantage based on the composite, structure of the composite towards space flight and aviation
The preferred material of material, can be used to make airframe, wing etc..
Compared with prior art, the advantage of the invention is that：
(1) aramid fiber/Al alloy composite of the invention, not only with good high high-temp stability, chemical stability,
Fire resistance, electrical insulating property and radiation resistance, high specific strength, high specific stiffness, excellent anticorrosive also with metal with
And fatigue performance；The relative density of the composite is lower than fine aluminium by 10%~18%, can significantly mitigate weight, its fatigue resistance
Also can improve more than 30%, so it can be used to make airframe, wing etc. in field of aerospace, airliner,
Had broad application prospects in warplane and unmanned plane.
(2) preparation method of the invention is combined to complete by aramid fiber material with the lamination of aluminium alloy, by aramid fiber material
Material carries out modified its surface-active of increase in surface, from the modified epoxy gluing agent compatible with epoxy resin, and to aluminium alloy
Surface carries out the caking property of anodization common guarantee aramid fiber material and aluminium alloy, and reducing laminar composite inside should
Power, improves combination property.
Brief description of the drawings
Fig. 1 is the aramid fiber/Al alloy composite structural representation of the embodiment of the present invention 1,3.
Fig. 2 is the aramid fiber/Al alloy composite structural representation of the embodiment of the present invention 2,4.
Marginal data：
1st, aluminium alloy flaggy；2nd, aramid fiber material layer.
Specific embodiment
For the ease of understanding the present invention, do more complete to inventing herein below in conjunction with Figure of description and preferred embodiment
Face, meticulously describe, but protection scope of the present invention is not limited to specific examples below.
Unless otherwise defined, all technical terms used hereinafter are generally understood that implication phase with those skilled in the art
Together.Technical term used herein is intended merely to describe the purpose of specific embodiment, is not intended to limitation of the invention
Protection domain.
Unless otherwise specified, various raw material, reagent, instrument and equipment used in the present invention etc. can be by city
Field is commercially available or can be prepared by existing method.
Embodiment 1：
A kind of aramid fiber/Al alloy composite of the invention, structural representation are as shown in figure 1, by four layers of aluminium alloy plate
Seven layers of overlaying structure that layer 1 and three layers of aramid fiber material layer 2 are alternately compounded to form successively, wherein aramid fiber/Al alloy composite
The bottom and the superiors be aluminium alloy flaggy.
The preparation method of the aramid fiber/Al alloy composite in the present embodiment, comprises the following steps：
(1) the thick aluminium alloy plates of several piece 0.3mm are chosen, after carrying out surface anodization treatment, cleans dry with deionized water
Only, dried in 60 DEG C of baking ovens, it is stand-by；
(2) after Aramid No-Woven Cloth is surface-treated with KH560, immersion is carried out with bisphenol A type epoxy resin system
After profit leaching a period of time, (the mass fraction control of resin exists in the aramid fiber epoxy prepreg to obtain aramid fiber epoxy prepreg
20% or so, the thickness control of prepreg is in 0.08mm), prepreg puts in baking oven the preliminary drying 30min in 60 DEG C after completing；
(3) aluminium alloy plate after one piece of anodized is chosen, one side coats polysulfones epoxy resin adhesive, chooses one
Layer step (2) pre-baked aramid fiber epoxy prepreg is stacked on the aluminium alloy plate for scribbling adhesive one side, then by second piece
It is stacked on aramid fiber epoxy prepreg after 0.30mm thick aluminium alloy plate double spread, is so repeated, until superimposed layer totally 7
Layer, the superiors are the aluminium alloy plate of single spreading, that is, obtain seven stackings plus structural material；Wherein, in lamination process, press in time
Folded composite material, exerts a force along aramid fiber arragement direction from centre to edge direction, to drive bubble, reduces residual stress；
Complete lamination and be compacted；
(4) release cloth is spread in seven stackings plus structural material upper and lower surface for obtaining step (3), is then fed into hot press
In, temperature be 150 DEG C, pressure be 5.0MPa under the conditions of suppressed, and pressurize 60min is to obtain aramid fiber/aluminium alloy compound
Material.
Embodiment 2：
A kind of aramid fiber/Al alloy composite of the invention, structural representation are as shown in Fig. 2 by three layers of aluminium alloy plate
Five layers of overlaying structure that the aramid fiber material layer 2 of layer 1 and two-layer is alternately compounded to form successively, wherein aramid fiber/Al alloy composite
The bottom and the superiors be aluminium alloy plate.
The preparation method of the aramid fiber/Al alloy composite in the present embodiment, comprises the following steps：
(1) the thick aluminium alloy plates of several piece 0.3mm are chosen, after carrying out surface anodization treatment, cleans dry with deionized water
Only, dried in 60 DEG C of baking ovens, it is stand-by；
(2) after aramid fiber is surface-treated with KH560, then aryl fiber cloth is obtained by Wet Winding Process method,
Profit leaching is carried out in immersion bisphenol A type epoxy resin system, aramid fiber epoxy prepreg (resin content matter in the prepreg is obtained
, 25% or so, prepreg thickness control is in 1.00mm for amount Fractional domination), prepreg is put in baking oven in 60 DEG C after completing
Preliminary drying 30min；
(3) aluminium alloy plate after one piece of anodized is chosen, one side coats polysulfones epoxy resin adhesive, chooses one
Layer step (2) pre-baked aramid fiber epoxy prepreg is stacked on the aluminium alloy plate for scribbling adhesive one side, then by second piece
It is stacked on aramid fiber epoxy prepreg after 0.30mm thick aluminium alloy plate double spread, is so repeated, until superimposed layer totally 5
Layer, that is, obtain five stackings plus structural material (the superiors are the aluminium alloy plate of single spreading)；Wherein, in lamination process, in time
Laminated composite material, exerts a force along Aramid No-Woven Cloth fiber architecture direction from centre to edge direction, to drive bubble, reduces residual
Residue stress；Complete lamination and be compacted；
(4) release cloth is spread in five stackings plus structural material upper and lower surface for obtaining step (3), is then fed into hot press
In, temperature be 150 DEG C, pressure be 5.0MPa under the conditions of suppressed, and pressurize 50min is to obtain aramid fiber/aluminium alloy compound
Material.
Embodiment 3：
A kind of aramid fiber/Al alloy composite of the invention, structural representation are as shown in figure 1, by four layers of aluminium alloy plate
Seven layers of overlaying structure that layer 1 and three layers of aramid fiber material layer 2 are alternately compounded to form successively, wherein aramid fiber/Al alloy composite
The bottom and the superiors be aluminium alloy plate.
The preparation method of the aramid fiber/Al alloy composite in the present embodiment, comprises the following steps：
(1) the thick aluminium alloy plates of several piece 0.5mm are chosen, after carrying out surface anodization treatment, cleans dry with deionized water
Only, dried in 60 DEG C of baking ovens, it is stand-by；
(2) after Aramid No-Woven Cloth is surface-treated with KH560, profit leaching is carried out with bisphenol A type epoxy resin system, is obtained
To aramid fiber epoxy prepreg, (resin quality Fractional domination is in 30% or so, prepreg thickness in the aramid fiber epoxy prepreg
Control is in 1.50mm), prepreg puts in baking oven the preliminary drying 50min in 60 DEG C after completing；
(3) aluminium alloy plate after one piece of anodized is chosen, one side coats polysulfones epoxy resin adhesive, chooses one
Layer step (2) pre-baked aramid fiber epoxy prepreg is stacked on the aluminium alloy plate for scribbling adhesive one side, then by second piece
It is stacked on aramid fiber epoxy prepreg after 0.50mm thick aluminium alloy plate double spread, is so repeated, until superimposed layer totally 7
Layer, that is, obtain seven stackings plus structural material (the superiors are the aluminium alloy plate of single spreading)；Wherein, in lamination process, in time
Laminated composite material, exerts a force along Aramid No-Woven Cloth fiber architecture direction from centre to edge direction, to drive bubble, reduces residual
Residue stress；Complete lamination and be compacted；
(4) release cloth is spread in seven stackings plus structural material upper and lower surface for obtaining step (3), is then fed into hot press
In, temperature be 150 DEG C, pressure be 8.0MPa under the conditions of suppressed, pressurize 90min is to obtain aramid fiber/aluminium alloy compound material
Material.
Embodiment 4：
A kind of aramid fiber/Al alloy composite of the invention, structural representation are as shown in Fig. 2 by three layers of aluminium alloy plate
Five layers of overlaying structure that the aramid fiber material layer 2 of layer 1 and two-layer is alternately compounded to form successively, wherein aramid fiber/Al alloy composite
The bottom and the superiors be aluminium alloy plate.
The preparation method of the aramid fiber/Al alloy composite in the present embodiment, comprises the following steps：
(1) the thick aluminium alloy plates of several piece 0.3mm are chosen, after carrying out surface anodization treatment, cleans dry with deionized water
Only, dried in 60 DEG C of baking ovens, it is stand-by；
(2) after Aramid No-Woven Cloth is surface-treated using KH560, immersion bisphenol A type epoxy resin system is moistened
Leaching, obtain aramid fiber epoxy prepreg (in the aramid fiber epoxy prepreg resin quality Fractional domination between 25%, prepreg
Thickness control is in 1.00mm), prepreg puts in baking oven the preliminary drying 50min in 60 DEG C after completing；
(3) aluminium alloy plate after one piece of anodized is chosen, one side coats polysulfones epoxy resin adhesive, chooses one
Layer step (2) pre-baked aramid fiber epoxy prepreg is stacked on the aluminium alloy plate for scribbling adhesive one side, then by second piece
It is stacked on aramid fiber epoxy prepreg after 0.30mm thick aluminium alloy plate double spread, is so repeated, until superimposed layer totally 5
Layer, that is, obtain five stackings plus structural material (the superiors are the aluminium alloy plate of single spreading)；Wherein, in lamination process, in time
Laminated composite material, exerts a force along aramid fiber arragement direction from centre to edge direction, to drive bubble, reduces remaining answering
Power；Complete lamination and be compacted；
(4) release cloth is spread in five stackings plus structural material upper and lower surface for obtaining step (3), is then fed into hot press
In, temperature be 150 DEG C, pressure be 5.0Mpa under the conditions of suppressed, pressurize 30min is to obtain aramid fiber/aluminium alloy compound material
Material.
Comparative example：
Aramid fiber/the Al alloy composite of this comparative example, by 3 layers of aluminium alloy flaggy and 2 layers of aramid fiber material layer successively
Five layers of overlaying structure that alternating is compounded to form, the wherein bottom of aramid fiber/Al alloy composite and the superiors are aluminium alloy
Plate.
The preparation method of the aramid fiber/Al alloy composite in the present embodiment, comprises the following steps：
(1) the thick aluminium alloy plates of several piece 0.3mm are chosen, after carrying out surface anodization treatment, cleans dry with deionized water
Only, dried in 60 DEG C of baking ovens, it is stand-by；
(2) Aramid No-Woven Cloth is directly immersed in into bisphenol A type epoxy resin system carries out profit leaching, obtains aramid fiber epoxy resin prepolymer
Leaching material (in the aramid fiber epoxy prepreg resin quality Fractional domination between 25%, prepreg thickness control is in 1.00mm), in advance
Leaching material puts in baking oven the preliminary drying 50min in 60 DEG C after completing；
(3) aluminium alloy plate after one piece of anodized is chosen, one side coats epoxy-modified acrylic acid adhesive, chooses
One layer of pre-baked aramid fiber epoxy prepreg of step (2) is stacked on the aluminium alloy plate for scribbling adhesive one side, then by second piece
It is stacked on aramid fiber epoxy prepreg after 0.30mm thick aluminium alloy plate double spread, is so repeated, until superimposed layer totally 5
Layer, that is, obtain five stackings plus structural material (the superiors are the aluminium alloy plate of single spreading)；Wherein, in lamination process, in time
Laminated composite material, exerts a force along aramid fiber arragement direction from centre to edge direction, to drive bubble, reduces remaining answering
Power；Complete lamination and be compacted；
(4) release cloth is spread in five stackings plus structural material upper and lower surface for obtaining step (3), is then fed into hot press
In, temperature be 150 DEG C, pressure be 5.0MPa under the conditions of suppressed, pressurize 30min is to obtain aramid fiber/aluminium alloy compound material
Material.
The performance test data of aramid fiber/Al alloy composite that above-mentioned 4 embodiments and comparative example are prepared is shown in Table 1
It is shown, as known from Table 1, aramid fiber/Al alloy composite of the invention with excellent tensile strength, stretch modulus, bending
The performances such as intensity, crushing strength, belong to the composite of high specific strength, high specific stiffness；And aramid fiber/aluminium alloy in the present invention is multiple
Bond strength between layers between condensation material are stronger, and relative density is low, lower than the density of aluminium alloy by 10%~18% (aluminium alloy it is close
Degree is in 2.7g/cm3Left and right), fatigue performance can improve more than 30%.Based on aramid fiber/Al alloy composite of the invention
Advantage, the composite can be used to make airframe, wing etc. towards the preferred material of the structural material of space flight and aviation.
The aramid fiber of each embodiment of table 1 and comparative example/aluminium alloy lamination composite material test result
Claims (10)
1. a kind of aramid fiber/Al alloy composite, it is characterised in that the aramid fiber/Al alloy composite is by N+1 layers of aluminium
The multiple-layer stacked structure that alloy plate layer and N layers of aramid fiber material layer are alternately compounded to form successively；Wherein, the aramid fiber/aluminium alloy
The bottom of composite and the superiors are aluminium alloy flaggy, and 1≤N≤8 and N are integer.
2. aramid fiber/Al alloy composite as claimed in claim 1, it is characterised in that the surface warp of the aluminium alloy flaggy
Anodized mistake；Aramid fiber material layer be by after aramid fiber material coupling agent surface treatment, immersion epoxy-resin systems
In impregnated, it is hot-forming after obtain.
3. a kind of preparation method of aramid fiber/Al alloy composite, it is characterised in that comprise the following steps：
(1) after carrying out anodized to aluminium alloy plate, washing is dried, the aluminium alloy plate for being pre-processed；
(2) after aramid fiber material is surface-treated with coupling agent, impregnated in immersion epoxy-resin systems, obtained aramid fiber ring
Oxygen resin prepreg material；
(3) the aramid fiber epoxy prepreg is carried out into prebake；
(4) according to one layer of overlay order of the aramid fiber epoxy prepreg of the another layer prebake of aluminium alloy plate of pretreatment, will
The aluminium alloy plate of pretreatment and the aramid fiber epoxy prepreg of prebake are paved into alternate multiple-layer stacked structure successively, wherein,
The bottom of multiple-layer stacked structure and the superiors are the aluminium alloy plate of pretreatment；
(5) the multiple-layer stacked structure is carried out hot-forming, that is, obtains the aramid fiber/Al alloy composite.
4. preparation method as claimed in claim 3, it is characterised in that in the step (2), in aramid fiber epoxy prepreg
The mass content of epoxy resin is 5%~65%；
In the step (4), the thickness of every layer of aluminium alloy plate in multiple-layer stacked structure is 0.01~2.00mm, every layer of prebake
Aramid fiber epoxy prepreg thickness be 0.01~5.00mm.
5. preparation method as claimed in claim 3, it is characterised in that the specific operation process of the step (4) is：First will be pre-
, then be stacked in for pre-baked one layer of aramid fiber epoxy prepreg and scribble gluing by the glutinous agent of one layer of aluminium alloy plate single spreading handled well
On the aluminium alloy plate of agent one side, then the aluminium alloy plate of the glutinous agent of one layer of single spreading is covered in the pre-baked aramid fiber epoxy preimpregnation
On material, three layers of overlaying structure is formed.
6. preparation method as claimed in claim 3, it is characterised in that the specific operation process of the step (4) is：First will be pre-
, then be stacked in for pre-baked one layer of aramid fiber epoxy prepreg and scribble gluing by the glutinous agent of one layer of aluminium alloy plate single spreading handled well
On the aluminium alloy plate of agent one side, then the two-sided aluminium alloy plate for scribbling adhesive is stacked in the pre-baked aramid fiber epoxy prepreg
On, so it is repeated, until being superimposed to the required number of plies, form the overlaying structure of multilayer；The superiors of wherein overlaying structure are
Aluminium alloy flaggy.
7. the preparation method as described in claim 5 or 6, it is characterised in that the adhesive is polysulfones epoxy resin adhesive
Or Epoxy nylon glue.
8. the preparation method as described in any one of claim 3~6, it is characterised in that in the step (3), prebake refers to
Preliminary drying 10min~60min at a temperature of 60 DEG C~80 DEG C；
In the step (5), it is hot-forming refer to temperature be 60 DEG C~300 DEG C, pressure be 0.1MPa~20.0MPa under the conditions of
Carry out 30~90min of compacting.
9. the preparation method as described in any one of claim 3~6, it is characterised in that the coupling agent be selected from KH550,
Any one in KH560, KH570.
10. the virtue that the preparation method described in a kind of as claimed in claim 1 or 2 or any one of claim 3~9 is prepared
Application of the synthetic fibre/Al alloy composite in aerospace structural material.
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