CN109703071A - A kind of bionical multilevel structure tubular composite material and preparation method thereof - Google Patents
A kind of bionical multilevel structure tubular composite material and preparation method thereof Download PDFInfo
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Abstract
The present invention provides bionical multilevel structure tubular composite material designs of a kind of aluminium alloy/carbon fiber/foam resin and preparation method thereof, including different tube diameters aluminium-alloy pipe is pre-processed；It carries out overlaying glue on aluminium-alloy pipe surface, carbon fiber/resin prepreg material is carried out solidification using carbon fiber of the resin to aluminium-alloy pipe surface and different tube diameters tubular material prefabricated component is prepared with default wrapping wire angle wound on aluminium-alloy pipe；Tubular material prefabricated component that caliber is respectively the first caliber and the second caliber is chosen as low-level pipe fitting and high-level pipe fitting, and by low-level pipe fitting insertion high-level pipe fitting, obtains multilevel structure pipe fitting；By foamed resin perfusion filling to multilevel structure pipe fitting gap, foams and curing molding obtains bionical multilevel structure tubular composite material.Preparation method provided by the invention is based on the analysis and reduction to bird bone biological structure, the advantages of combining aluminium alloy, carbon fiber, foamed resin and biomimetic features, has good comprehensive performance.
Description
Technical field
The present invention relates to material preparation process technical fields, and it is bionical to particularly relate to a kind of aluminium alloy/carbon fiber/foam resin
Multilevel structure tubular composite material design and preparation method thereof.
Background technique
The science and technology in the present age and industrial development propose more fully and harsh requirement material property, and single material is
Through being difficult to meet required special or comprehensive performance.Currently, industrially require advanced configuration material that there is high-intensitive, weight
Gently, the features such as stability is good.
Bionic composite material multiple valve embodies a kind of completely new design on material structure thought, is by the compound of multilevel size
Material single tube is through assembly, the fixed multi-layer composite pipe structure being prepared of filling foamed resin filling.Bionic composite material
Multiple valve not only inherits the high intensity of composite material, rigidity, also has the characteristics that high-ductility, the lightweight of imitative natural biology body, therefore,
It can be applied to the main force support structure material in the fields such as Aeronautics and Astronautics, weapons, and with high excellent of large span flowering structure stability
Gesture, especially suitable for the aircraft longspan structure to weight demands harshness.
Density possessed by aluminium alloy is small, high specific strength, high ductibility, excellent electric conductivity, thermal conductivity and corrosion stability etc.
Good comprehensive performance and lower cost open wide application prospect in each industrial circle for aluminium alloy.Carbon fiber
The specific strength and modulus of reinforced resin based composites are high, and creep-resistant property is more excellent, superior fatigue resistance, coefficient of friction and mill
Loss rate is low, has self-lubrication；It is thermally conductive, electric conductivity is good, thermal expansion coefficient is small, excellent corrosion resistance.Therefore it is widely used
In fields such as Aeronautics and Astronautics.
Summary of the invention
In view of this, the technical problem to be solved in the present invention is to provide a kind of bionical multilevel structure tubular composite material and its
Preparation method combines aluminium alloy, carbon fiber, foamed resin and bionical based on the analysis and reduction to bird bone biological structure
The advantages of structure, has good comprehensive performance.
To achieve the goals above, it is proposed that following solution:
On the one hand, a kind of preparation method of bionical multilevel structure tubular composite material is provided, comprising:
Different tube diameters aluminium-alloy pipe is pre-processed；
Paving glue in advance is carried out on aluminium-alloy pipe surface after the pre-treatment, by carbon fiber/resin prepreg material to preset wrapping wire
Angle wound carries out solidification using carbon fiber of the resin to the aluminium-alloy pipe surface and is prepared not on the aluminium-alloy pipe
With caliber tubular material prefabricated component；
The tubular material prefabricated component of the first caliber is chosen as low-level pipe fitting and the tubulose of the second caliber
Material preforms are inserted into the high-level pipe fitting as high-level pipe fitting, and by the low-level pipe fitting, obtain multilevel structure
Pipe fitting；Wherein, first caliber is less than second caliber, the low-level pipe fitting and institute in the multilevel structure pipe fitting
The general pipeline number of packages amount for stating high-level pipe fitting is more than or equal to 2；
By foamed resin perfusion filling to multilevel structure pipe fitting gap, the simultaneously curing molding that foams obtains described bionical more
Level structure tubular composite material.
Preferably, described to pre-process aluminium-alloy pipe, comprising: dirt removal is carried out to aluminium-alloy pipe surface；To going
Except the aluminium-alloy pipe after surface smut carries out pickling or alkali cleaning progress oily waste degradation；To removal surface and oil contaminant after aluminium-alloy pipe into
Row ultrasonic cleaning immerses ethanol solution and is cleaned, drying is taken out after cleaning after cleaning.
Preferably, described that the low-level pipe fitting is inserted into the high-level pipe fitting, multilevel structure pipe fitting is obtained, is wrapped
It includes: the low-level pipe fitting being inserted into the high-level pipe fitting, loose assembly is made；Using drawing equipment by the dress
Ligand tenses, so that each level pipe fitting comes into full contact with.
Preferably, described by foamed resin perfusion filling to multilevel structure pipe fitting gap, it foams and curing molding obtains
To before the bionical multilevel structure tubular composite material, further includes: the low-level pipe fitting nozzle is closed using baffle, it will
The foamed resin perfusion is filled to multilevel structure pipe fitting gap.
Preferably, the carbon fibre tow is between 3-24K.
Preferably, the aluminium-alloy pipe includes: 2xxx line aluminium alloy pipe, 5xxx line aluminium alloy pipe, 6xxx line aluminium alloy pipe
And 7xxx line aluminium alloy pipe.
Preferably, resin material includes: phenolic resin, epoxy resin or polyimides in the fiber/resin prepreg
The thermosetting resin of resin；And the thermoplastic resin of polyvinyl chloride, polyethylene or polyethers ketone resins.
Preferably, the foamed resin includes: EPP expanded polypropylene, E51 foaming epoxy resin, XYH3001, XYH3002
Vinyl ester resin, GM197 Bisphenol a unsaturated polyester resin, Xm-1, Xm-2 xylol type unsaturated polyester resin, 2123,
2124 phenolic resin.
On the other hand, a kind of bionical multilevel structure tubular composite material is additionally provided, by bionical multistage knot described above
Structure tubular composite material preparation method is made.
The embodiment of the present invention has the advantages that
It is simple and easy to do by preparation method forming method simple process provided by the present application in above scheme, it prepares
Material number of levels, fiber wrapping wire angle, each group metamember, the volume fraction of multistage composite are controllable, have excellent performance.The material is from bionical
The advantages of learning optimization and design that angle carries out structure, combining the multiple materials such as aluminium alloy, carbon fiber, foamed resin, has
The advantages that intensity is high, and fracture toughness is high, and density is low, and fatigue behaviour is good is suitable for the fields such as Aeronautics and Astronautics.The present invention with reference to
Natural bird bone high-strength light architectural characteristic extracts it on the basis of analyzing strengthening mechanism and strengthens unit, constructs theoretical model, and
The theoretical model design is utilized on macrostructure part and prepares bionical multilevel structure tubular composite material.Design scheme be at
Ripe aerospace material is cementing, based on fiber-reinforced resin based composites preparation process, and feasibility is stronger, and prepares
Multistage pipe fitting have the lightweight of organism, high strength characteristics, have excellent performance.
Due to the cooperation being related between multiple material in the present invention, pipe fitting its mechanical property finally shaped is by fiber kind
Class；Fiber winding angle；Aluminium-alloy pipe type, caliber, wall thickness；Single tube quantity at the same level；Foamed resin frothing percentage, abscess-size etc. are more
The influence of factor.Therefore, the performance that can adjust final forming pipe fitting by adjusting technological parameter in the present invention, optimizes material
Material.
Detailed description of the invention
Fig. 1 is bionical multilevel structure tubular composite material preparation method flow chart of steps provided in an embodiment of the present invention.
Specific embodiment
To keep the embodiment of the present invention technical problems to be solved, technical solution and advantage clearer, below in conjunction with
Drawings and the specific embodiments are described in detail.
To bird plumage skeleton studies have shown that its with typical class Russian Dolls multi-layer, outer cladding multi-angle fiber
Microstructure is meeting bird plumage skeleton just because of this structure from macroscopically saying that bird plumage skeleton is a kind of porous structure
Ultra lightweighting is kept while rigidity, intensity and toughness.Therefore, bird plumage skeleton structure can be used as aerospace high-strength light high-ductility
The reference of structure member design.Using natural biology body structure as reference, by carbon fiber enhancement resin base composite material, aluminium-alloy pipe
Part and Foamex are compound, and the advantage of three can be made to be not fully exerted, and it is excellent to be provided simultaneously with low, high-intensitive, high resiliency of density etc.
Anisotropic energy, special bionical multistage tubular structure make material have higher specific strength, specific stiffness and fatigue performance.
On the one hand, as shown in Figure 1, being bionical multilevel structure tubular composite material preparation method provided in an embodiment of the present invention
Flow chart of steps.On the one hand, a kind of preparation method of bionical multilevel structure tubular composite material is provided, comprising:
Step S101: the aluminium-alloy pipe of different tube diameters is pre-processed；
Step S102: on aluminium-alloy pipe surface after the pre-treatment carry out in advance paving glue, by carbon fiber/resin prepreg material with
Default wrapping wire angle wound carries out solidification system using carbon fiber of the resin to the aluminium-alloy pipe surface on the aluminium-alloy pipe
It is standby to obtain the tubular material prefabricated component of different tube diameters；
Specifically, aluminium-alloy pipe surface paving glue process may include: to select epoxy-resin systems glue film in alloy pipe surface
Spread glue.Glue film is cut respectively by alloy pipe size, by glue film paving in tube surface.After sturdy glue film, the another of surface is taken off
The anti-sticking barrier paper of layer.
Specifically, the braiding and solidification on aluminium-alloy pipe surface may include: will be after impregnated carbon fiber resin using wrapping machine
It is wrapped on pipe fitting according to certain Winding theory.Carbon fiber is driven using the rotation of pipe fitting, is made it through at resin storage tank impregnation
Then reason is removing resin extra in fiber prepreg material by compression roll, scraper plate.To prevent damage fiber, in advance with one layer
The resin of semi-solid preparation is coated in the surface of fiber, or directly improves carbon fiber/resin composite materials technique using prepreg
Performance.In such a way that machine driving and computer control fiber winding and winding angle.The tubular preforms that winding is finished
It is placed in autoclave and is solidified.
Step S103: the tubular material prefabricated component of the first caliber is chosen as low-level pipe fitting and the second caliber
The tubular material prefabricated component be inserted into the high-level pipe fitting as high-level pipe fitting, and by the low-level pipe fitting, obtain
To multilevel structure pipe fitting；Wherein, first caliber is less than second caliber, the low layer in the multilevel structure pipe fitting
The general pipeline number of packages amount of grade pipe fitting and the high-level pipe fitting is more than or equal to 2；
Specifically, the lesser pipe fitting of certain amount diameter is assemblied in the pipe fitting being relatively large in diameter, repeat the process until
Realize the nesting of multistage pipe fitting.
Step S104: it by foamed resin perfusion filling to multilevel structure pipe fitting gap, foams and curing molding obtains
The bionical multilevel structure tubular composite material.
Step 101 pre-processes aluminium-alloy pipe, comprising: carries out dirt removal to aluminium-alloy pipe surface；To removal table
Aluminium-alloy pipe after the dirt of face carries out pickling or alkali cleaning carries out oily waste degradation；Aluminium-alloy pipe after removal surface and oil contaminant is surpassed
Sound wave cleaning is immersed ethanol solution and is cleaned, drying is taken out after cleaning after cleaning.Key operation in specific implementation process
Process includes 1, preparation: the pipe fitting that surface is coated with oil sealing is first cleaned with diesel oil (or aqueous detergent), and dirt is serious
Pipe fitting using mechanical means remove dirt；2, pickling or alkali cleaning oil removing: using immersion way in slot to pipe fitting carry out pickling or
Alkali cleaning removes tube surface greasy dirt, and soaking time eliminates with surface contaminants, will not excessive corrosion be advisable, be immersed in after taking-up clear
In water, ultrasonic cleaning technology cleansing pipe fitting is utilized later, then pipe fitting is immersed into secondary cleaning in ethanol solution, 3, dry
It is dry: pipe being dried up with clean compressed air.
Specifically, step S103 includes: and the low-level pipe fitting is inserted into the high-level pipe fitting loose dress is made
Ligand；The assembly is tensed using drawing equipment, so that each level pipe fitting comes into full contact with.The lesser low-level of caliber is closed
Key, chooses that certain amount caliber is identical and in the smallest aluminium-alloy pipe merging biggish aluminium-alloy pipe of next stage caliber, will assemble
The second level composite pipe both ends polytetrafluoroethylene tape packaging protection of completion, using clamp and is fixed in drawing equipment,
Pipe fitting is tensed using stepping at a slow speed, makes to contact between multistage pipe fitting close.The lesser pipe fitting of certain amount diameter is assemblied in
In the pipe fitting being relatively large in diameter, nesting of the process until realizing multistage pipe fitting is repeated.
Before step S104, further includes: close the low-level pipe fitting nozzle using baffle, the foamed resin is filled
Note is filled to multilevel structure pipe fitting gap.Specifically, baffle is advanced with by low-level duct occlusion, by foam resin
E51 Foamex is cast in the gap of multistage pipe fitting, in foaming outside baking oven, after resin no longer flows out, places into 150 DEG C
Solidify 3-4h in baking oven, be then cooled to 70 DEG C, and takes out (temperature-fall period about 2h) after keeping 30min.
Specifically, the carbon fibre tow in step S101 is between 3-24K.In preparation method provided in an embodiment of the present invention
Aluminium-alloy pipe can be selected: 2xxx line aluminium alloy pipe, 5xxx line aluminium alloy pipe, 6xxx line aluminium alloy pipe and 7xxx line aluminium alloy pipe
Deng.
Specifically, resin material can be chosen in S102 fiber/resin prepreg: phenolic resin, epoxy resin or polyamides
The thermosetting resins such as imide resin；And the thermoplastic resins such as polyvinyl chloride, polyethylene or polyethers ketone resins.The present invention is implemented
Foamed resin can be selected in the preparation method that example provides: EPP expanded polypropylene, E51 foaming epoxy resin, XYH3001,
XYH3002 vinyl ester resin, GM197 Bisphenol a unsaturated polyester resin, Xm-1, Xm-2 xylol type unsaturated polyester (UP) tree
Rouge, 2123,2124 phenolic resin etc..
On the other hand, a kind of bionical multilevel structure tubular composite material is additionally provided, by bionical multistage knot described above
Structure tubular composite material preparation method is made.
The present invention extracts its reinforcing on the basis of analyzing strengthening mechanism with reference to natural bird bone high-strength light architectural characteristic
Unit constructs theoretical model, and using the theoretical model design and to prepare bionical multilevel structure tubulose multiple on macrostructure part
Condensation material.Design scheme be using mature aerospace material cementing, fiber-reinforced resin based composites preparation process as base
Plinth, feasibility is stronger, and the multistage pipe fitting prepared has the lightweight of organism, high strength characteristics, has excellent performance.
The specific embodiment of several bionical multilevel structure tubular composite material preparation methods provided by the present application is provided below
(specific embodiment one to specific embodiment four), those skilled in the art should be recognized that specific technical solution not as
Limit, being subject to can be realized.In addition, a kind of aluminium alloy provided in an embodiment of the present invention/bionical multistage of carbon fiber/foam resin
Aluminium-alloy pipe can choose circular cross-section in structure tubulose composite material tube preparation method, also can choose the square tube of on-circular cross-section
Or special pipe, and be not particularly limited.
Specific embodiment 1: a kind of bionical multilevel structure tubulose of aluminium alloy/carbon fiber/foam resin of present embodiment
Composite material and preparation method sequentially includes the following steps: the surface clean of one, aluminium-alloy pipe: aluminium-alloy pipe is polished through sand paper
Acetone or alcohol washes are used afterwards, remove tube surface greasy dirt, and selecting concentration is the NaOH aqueous cleaning pipe fitting of 20g/L, in alkali
It after impregnating 5-10min in water, is rinsed well using clear water, ultrasonic cleaning technology cleansing pipe fitting is used after drying, then soaked
Enter secondary cleaning in ethanol solution, takes out drying.
Two, aluminium-alloy pipe surface spreads glue: epoxy-resin systems glue film being selected to spread glue on aluminium-alloy pipe surface.It is closed by multilevel aluminum
Golden pipe caliber size cuts glue film respectively, by glue film paving in tube surface.After sturdy glue film, another layer for taking surface off is anti-sticking
Barrier paper is spare.
Three, braiding and solidification of the carbon fiber in Al pipe surface: the two-way cloth prepreg of carbon fiber is wrapped in using wrapping machine
On pipe fitting, i.e., fiber wind angle is with axial direction at [0 °, 90 °].The tubular preforms that winding finishes are placed in baking oven, temperature
It is set as 90 DEG C, is kept after temperature is stablized 1 hour, temperature is then risen to 170 DEG C, kept for 2 hours.Turn off baking oven power supply,
To its natural cooling；
Four, the lesser low-level aluminium-alloy pipe of caliber the assembly of multi-layer prefabricated component: is prepared into prefabricated pipe through step 1
After part, choose that certain amount caliber is identical and the smallest level-one aluminium-alloy pipe single tube is placed in the biggish second level aluminium-alloy pipe of caliber
Two-stage pipe fitting both ends polytetrafluoroethylene tape packaging protection that is interior, will assembling, using clamp and is fixed on stretcher
In, pipe fitting is tensed using stepping at a slow speed, makes to be in close contact between multistage pipe fitting.
Five, the filling filling of foamed resin: baffle is advanced with by low-level duct occlusion, E51 Foamex is cast in more
In the gap of grade pipe fitting, in foaming outside baking oven, after resin no longer flows out, places into 150 DEG C of baking oven and solidify 3-4h, then
70 DEG C are cooled to, and takes out (temperature-fall period about 2h) after keeping 30min.
Specific embodiment 2: a kind of bionical multilevel structure tubulose of aluminium alloy/carbon fiber/foam resin of present embodiment
Composite material and preparation method sequentially includes the following steps: the surface clean of one, aluminium-alloy pipe: aluminium-alloy pipe is polished through sand paper
Acetone or alcohol washes are used afterwards, remove tube surface greasy dirt, and selecting concentration is the NaOH aqueous cleaning pipe fitting of 20g/L, in alkali
It after impregnating 5-10min in water, is rinsed well using clear water, ultrasonic cleaning technology cleansing pipe fitting is used after drying, then soaked
Enter secondary cleaning in ethanol solution, takes out drying.
Two, aluminium-alloy pipe surface spreads glue: epoxy-resin systems glue film being selected to spread glue on aluminium-alloy pipe surface.It is closed by multilevel aluminum
Golden pipe caliber size cuts glue film respectively, by glue film paving in tube surface.After sturdy glue film, another layer for taking surface off is anti-sticking
Barrier paper is spare.
Three, braiding and solidification of the carbon fiber in Al pipe surface: using wrapping machine that two layers of carbon fiber unidirectional cloth prepreg is first
After be wrapped on pipe fitting, fiber wind angle be with axial direction at [± 30 °, ± 30 °].The tubular preforms that winding finishes are placed in
In baking oven, temperature is set as 90 DEG C, keeps 1 hour after temperature is stablized, temperature is then risen to 170 DEG C, kept for 2 hours.It closes
Fall baking oven power supply, to its natural cooling；
Four, the lesser low-level aluminium-alloy pipe of caliber the assembly of multi-layer prefabricated component: is prepared into prefabricated pipe through step 1
After part, choose that certain amount caliber is identical and the smallest level-one aluminium-alloy pipe single tube is placed in the biggish second level aluminium-alloy pipe of caliber
Two-stage pipe fitting both ends polytetrafluoroethylene tape packaging protection that is interior, will assembling, using clamp and is fixed on stretcher
In, pipe fitting is tensed using stepping at a slow speed, makes to be in close contact between multistage pipe fitting.
Five, the filling filling of foamed resin: baffle is advanced with by low-level duct occlusion, E51 Foamex is cast in more
In the gap of grade pipe fitting, in foaming outside baking oven, after resin no longer flows out, places into 150 DEG C of baking oven and solidify 3-4h, then
70 DEG C are cooled to, and takes out (temperature-fall period about 2h) after keeping 30min.
Specific embodiment 3: a kind of bionical multilevel structure tubulose of aluminium alloy/carbon fiber/foam resin of present embodiment
Composite material and preparation method sequentially includes the following steps: the surface clean of one, aluminium-alloy pipe: aluminium-alloy pipe is polished through sand paper
Acetone or alcohol washes are used afterwards, remove tube surface greasy dirt, and selecting concentration is the NaOH aqueous cleaning pipe fitting of 20g/L, in alkali
It after impregnating 5-10min in water, is rinsed well using clear water, ultrasonic cleaning technology cleansing pipe fitting is used after drying, then soaked
Enter secondary cleaning in ethanol solution, takes out drying.
Two, aluminium-alloy pipe surface spreads glue: epoxy-resin systems glue film being selected to spread glue on aluminium-alloy pipe surface.It is closed by multilevel aluminum
Golden pipe caliber size cuts glue film respectively, by glue film paving in tube surface.After sturdy glue film, another layer for taking surface off is anti-sticking
Barrier paper is spare.
Three, braiding and solidification of the carbon fiber in Al pipe surface: the two-way cloth prepreg of carbon fiber is wrapped in using wrapping machine
On pipe fitting, i.e., fiber wind angle is with axial direction at [0 °, 90 °].The tubular preforms that winding finishes are placed in baking oven, temperature
It is set as 90 DEG C, is kept after temperature is stablized 1 hour, temperature is then risen to 170 DEG C, kept for 2 hours.Turn off baking oven power supply,
To its natural cooling；
Four, the assembly of multi-layer prefabricated component: the lesser level-one aluminium-alloy pipe single tube of caliber is placed in second level aluminium-alloy pipe,
The two-stage pipe fitting assembled is fitted into the bigger three-level aluminium-alloy pipe single tube of caliber again, the three-level multiple tube that assembly is completed
Part both ends polytetrafluoroethylene tape packaging protection, using clamp and is fixed in stretcher, will be managed using stepping at a slow speed
Part tenses, and makes to be in close contact between multistage pipe fitting.
Five, the filling filling of foamed resin: baffle is advanced with by low-level duct occlusion, E51 Foamex is cast in more
In the gap of grade pipe fitting, in foaming outside baking oven, after resin no longer flows out, places into 150 DEG C of baking oven and solidify 3-4h, then
70 DEG C are cooled to, and takes out (temperature-fall period about 2h) after keeping 30min.
Specific embodiment 4: a kind of bionical multistage tubular structure of aluminium alloy/carbon fiber/foam resin of present embodiment
Composite material and preparation method sequentially includes the following steps: the surface clean of one, aluminium-alloy pipe: aluminium-alloy pipe is polished through sand paper
Acetone or alcohol washes are used afterwards, remove tube surface greasy dirt, and selecting concentration is the NaOH aqueous cleaning pipe fitting of 20g/L, in alkali
It after impregnating 5-10min in water, is rinsed well using clear water, ultrasonic cleaning technology cleansing pipe fitting is used after drying, then soaked
Enter secondary cleaning in ethanol solution, takes out drying.
Two, aluminium-alloy pipe surface spreads glue: epoxy-resin systems glue film being selected to spread glue on aluminium-alloy pipe surface.It is closed by multilevel aluminum
Golden pipe caliber size cuts glue film respectively, by glue film paving in tube surface.After sturdy glue film, another layer for taking surface off is anti-sticking
Barrier paper is assembled to bonded part by drawing, is placed in moulds of industrial equipment, to solidify.Then glued pipe fitting is lain in into baking
In case, solidifying pressure is 0.30 ± 0.02MPa.It is started to warm up from room temperature, heating rate is 2 DEG C/min~4 DEG C/min, is heated to
130 ± 5 DEG C (temperature is test specimen temperature), and it is maintained at temperature 2h.Then stop heating.Sample is natural in the case where keeping pressure
It is cooled to 60 DEG C or less releases.
Three, braiding and solidification of the carbon fiber in Al pipe surface: using wrapping machine that two layers of carbon fiber unidirectional cloth prepreg is first
After be wrapped on pipe fitting, fiber wind angle be with axial direction at [± 30 °, ± 30 °].The tubular preforms that winding finishes are placed in
In baking oven, temperature is set as 90 DEG C, keeps 1 hour after temperature is stablized, temperature is then risen to 170 DEG C, kept for 2 hours.It closes
Fall baking oven power supply, to its natural cooling；
Four, the assembly of multi-layer prefabricated component: the lesser level-one aluminium-alloy pipe single tube of caliber is placed in second level aluminium-alloy pipe,
The two-stage pipe fitting assembled is fitted into the bigger three-level aluminium-alloy pipe single tube of caliber again, the three-level multiple tube that assembly is completed
Part both ends polytetrafluoroethylene tape packaging protection, using clamp and is fixed in stretcher, will be managed using stepping at a slow speed
Part tenses, and makes to contact between multistage pipe fitting close.
Five, the filling filling of foamed resin: baffle is advanced with by low-level duct occlusion, E51 Foamex is cast in more
In the gap of grade pipe fitting, in foaming outside baking oven, after resin no longer flows out, places into 150 DEG C of baking oven and solidify 3-4h, then
70 DEG C are cooled to, and takes out (temperature-fall period about 2h) after keeping 30min.
It is simple and easy to do by preparation method forming method simple process provided by the present application, the multistage composite prepared
Material number of levels, fiber wrapping wire angle, each group metamember, volume fraction are controllable, have excellent performance.The material is carried out from bionics angle
The optimization and design of structure the advantages of combining the multiple materials such as aluminium alloy, carbon fiber, foamed resin, have that intensity is high, fracture
The advantages that toughness is high, and density is low, and fatigue behaviour is good is suitable for the fields such as Aeronautics and Astronautics.The present invention is with reference to natural bird bone lightweight
High strength structure characteristic extracts it on the basis of analyzing strengthening mechanism and strengthens unit, constructs theoretical model, and in macrostructure part
It is upper to utilize the theoretical model design and prepare bionical multilevel structure tubular composite material.Design scheme is with mature aerospace
Material is cementing, based on fiber-reinforced resin based composites preparation process, and feasibility is stronger, and the multistage pipe fitting tool prepared
The lightweight of standby organism, is had excellent performance high strength characteristics.
Due to the cooperation being related between multiple material in the present invention, pipe fitting its mechanical property finally shaped is by fiber kind
Class；Fiber winding angle；Aluminium-alloy pipe type, caliber, wall thickness；Single tube quantity at the same level；Foamed resin frothing percentage, abscess-size etc. are more
The influence of factor.Therefore, the performance that can adjust final forming pipe fitting by adjusting technological parameter in the present invention, optimizes material
Material.
In each method embodiment of the present invention, the serial number of each step can not be used to limit the successive suitable of each step
Sequence, for those of ordinary skill in the art, without creative efforts, the successive variation to each step
Within protection scope of the present invention.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of preparation method of bionical multilevel structure tubular composite material characterized by comprising
The aluminium-alloy pipe of different tube diameters is pre-processed；
Paving glue in advance is carried out on aluminium-alloy pipe surface after the pre-treatment, by carbon fiber/resin prepreg material to preset wrapping wire angle
It is wrapped on the aluminium-alloy pipe, carries out solidification using carbon fiber of the resin to the aluminium-alloy pipe surface and different pipes are prepared
The tubular material prefabricated component of diameter；
The tubular material prefabricated component of the first caliber is chosen as low-level pipe fitting and the tubular material of the second caliber
Prefabricated component is inserted into the high-level pipe fitting as high-level pipe fitting, and by the low-level pipe fitting, obtains multilevel structure pipe fitting；
Wherein, first caliber is less than second caliber, the low-level pipe fitting and the height in the multilevel structure pipe fitting
The general pipeline number of packages amount of level pipe fitting is more than or equal to 2；
By foamed resin perfusion filling to multilevel structure pipe fitting gap, foams and curing molding obtains the bionical multistage knot
Structure tubular composite material.
2. preparation method according to claim 1, which is characterized in that described to pre-process aluminium-alloy pipe, comprising:
Dirt removal is carried out to aluminium-alloy pipe surface；
Pickling is carried out to the aluminium-alloy pipe after removal surface smut or alkali cleaning carries out oily waste degradation；
Ultrasonic cleaning is carried out to the aluminium-alloy pipe after removal surface and oil contaminant, ethanol solution is immersed after cleaning and is cleaned,
Drying is taken out after cleaning.
3. preparation method according to claim 1, which is characterized in that described that the low-level pipe fitting is inserted into the high level
In grade pipe fitting, multilevel structure pipe fitting is obtained, comprising:
The low-level pipe fitting is inserted into the high-level pipe fitting, loose assembly is made；
The assembly is tensed using drawing equipment, so that each level pipe fitting comes into full contact with.
4. preparation method according to claim 1, which is characterized in that described by foamed resin perfusion filling to the multistage
Structure pipe fitting gap, the simultaneously curing molding that foams obtain before the bionical multilevel structure tubular composite material, further includes:
The low-level pipe fitting nozzle is closed using baffle, by foamed resin perfusion filling to the multilevel structure pipe fitting
Gap.
5. preparation method described in -4 according to claim 1, which is characterized in that the carbon fibre tow is between 3-24K.
6. preparation method according to claim 1-4, which is characterized in that the aluminium-alloy pipe includes: 2xxx system
Aluminium-alloy pipe, 5xxx line aluminium alloy pipe, 6xxx line aluminium alloy pipe and 7xxx line aluminium alloy pipe.
7. preparation method according to claim 1-4, which is characterized in that set in the fiber/resin prepreg
Rouge material includes: the thermosetting resin of phenolic resin, epoxy resin or polyimide resin；And polyvinyl chloride, polyethylene or
The thermoplastic resin of polyethers ketone resins.
8. preparation method according to claim 1-4, which is characterized in that the foamed resin includes: EPP foaming
Polypropylene, E51 foaming epoxy resin, XYH3001, XYH3002 vinyl ester resin, GM197 bisphenol A-type unsaturated polyester (UP) tree
Rouge, Xm-1, Xm-2 xylol type unsaturated polyester resin, 2123,2124 phenolic resin.
9. a kind of bionical multilevel structure tubular composite material, which is characterized in that by any preparation method of claim 1-8
It is made.
Priority Applications (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112339306A (en) * | 2020-10-13 | 2021-02-09 | 武汉理工大学 | Necking processing preparation method of fiber-metal tube |
| CN116082794A (en) * | 2022-12-28 | 2023-05-09 | 哈尔滨工程大学 | Pressure-resistant multi-stage carbon fiber circular tube composite buoyancy material structure and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2498433Y (en) * | 2001-10-11 | 2002-07-03 | 李朝襄 | Multi-shield high temperature pipe |
| CN201934810U (en) * | 2011-01-30 | 2011-08-17 | 吴汉超 | Five-layer stainless-steel-glass-fiber-reinforced-plastic composite insulating pipe with pipe joints |
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- 2018-12-24 CN CN201811581703.2A patent/CN109703071A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2498433Y (en) * | 2001-10-11 | 2002-07-03 | 李朝襄 | Multi-shield high temperature pipe |
| CN201934810U (en) * | 2011-01-30 | 2011-08-17 | 吴汉超 | Five-layer stainless-steel-glass-fiber-reinforced-plastic composite insulating pipe with pipe joints |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112339306A (en) * | 2020-10-13 | 2021-02-09 | 武汉理工大学 | Necking processing preparation method of fiber-metal tube |
| CN112339306B (en) * | 2020-10-13 | 2022-06-07 | 武汉理工大学 | Necking processing preparation method of fiber-metal tube |
| CN116082794A (en) * | 2022-12-28 | 2023-05-09 | 哈尔滨工程大学 | Pressure-resistant multi-stage carbon fiber circular tube composite buoyancy material structure and preparation method thereof |
| CN116082794B (en) * | 2022-12-28 | 2024-01-09 | 哈尔滨工程大学 | Pressure-resistant multi-stage carbon fiber circular tube composite buoyancy material structure and preparation method thereof |
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Application publication date: 20190503 |