CN116872579A - Large-size thin aluminum panel honeycomb sandwich structure and preparation method thereof - Google Patents

Large-size thin aluminum panel honeycomb sandwich structure and preparation method thereof Download PDF

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Publication number
CN116872579A
CN116872579A CN202310904876.8A CN202310904876A CN116872579A CN 116872579 A CN116872579 A CN 116872579A CN 202310904876 A CN202310904876 A CN 202310904876A CN 116872579 A CN116872579 A CN 116872579A
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CN
China
Prior art keywords
aluminum panel
honeycomb
sandwich structure
honeycomb sandwich
panel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310904876.8A
Other languages
Chinese (zh)
Inventor
曹延君
邹志伟
秦闯
孟凡宇
迟贺
乐强
王宏禹
冯昌青
李志超
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Changchun Changguang Aerospace Composite Material Co ltd
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Changchun Changguang Aerospace Composite Material Co ltd
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Filing date
Publication date
Application filed by Changchun Changguang Aerospace Composite Material Co ltd filed Critical Changchun Changguang Aerospace Composite Material Co ltd
Priority to CN202310904876.8A priority Critical patent/CN116872579A/en
Publication of CN116872579A publication Critical patent/CN116872579A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • 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
    • 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
    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/06—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions for securing layers together; for attaching the product to another member, e.g. to a support, or to another product, e.g. groove/tongue, interlocking
    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
    • 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
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • 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
    • 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
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention relates to the technical field of honeycomb sandwich structures, and provides a large-size thin aluminum panel honeycomb sandwich structure and a preparation method thereof, wherein the preparation method of the large-size thin aluminum panel honeycomb sandwich structure comprises the following operation steps: s1, preparing a honeycomb core, an aluminum panel and an I-beam; s2, cutting and phosphoric acid anodizing the aluminum panel, and splicing the honeycomb cores by utilizing the I-beam; s3, adhering aluminum panels to the upper side and the lower side of the spliced honeycomb core for solidification molding; s4, fixedly connecting the aluminum panel and the I-beam through rivets, and reinforcing the joint of the honeycomb cores. The large-size thin aluminum panel honeycomb sandwich structure and the preparation method thereof provided by the invention realize panel splicing and performance assurance of the large-size thin aluminum panel honeycomb sandwich structure, and can further improve the surface quality of products.

Description

Large-size thin aluminum panel honeycomb sandwich structure and preparation method thereof
Technical Field
The invention relates to the technical field of honeycomb sandwich structures, in particular to a large-size thin aluminum panel honeycomb sandwich structure and a preparation method thereof.
Background
With the development of aerospace technology, the honeycomb sandwich structure is widely applied to various structural members due to the advantages of high specific strength, high specific rigidity, high fatigue resistance, high damping and shock absorbing performance, high structural designability and the like, the aluminum panel honeycomb sandwich structure is widely applied due to high thermal conductivity, new requirements are also provided for the preparation technology of the large-size honeycomb sandwich structure along with the development of the large-size satellite structure, the novel requirements are limited by the preparation width of the thin aluminum panel, when the size of the honeycomb sandwich structure panel exceeds 2500mm x 2500mm, the conventional aluminum panel width cannot meet the requirements, and the aluminum panel needs to be spliced, so that the preparation Fa of the large-size thin aluminum panel honeycomb sandwich structure is finished through splicing the aluminum panel at present.
Disclosure of Invention
The invention aims to overcome the defect that the width of an aluminum panel cannot meet the requirement of preparation of a large-size honeycomb sandwich structure, and provides a large-size thin aluminum panel honeycomb sandwich structure and a preparation method thereof, which can realize the molding preparation of the large-size thin aluminum panel honeycomb sandwich structure and meet the requirements of product appearance quality, dimensional precision, splicing strength and the like.
In order to achieve the above purpose, the present invention adopts the following specific technical scheme:
the invention provides a honeycomb sandwich structure of a large-size thin aluminum panel, which comprises honeycomb cores, aluminum panels, I-shaped beams and rivets, wherein the I-shaped grooves are formed on two sides of each I-shaped beam, two honeycomb cores are inserted into the I-shaped grooves for splicing, the aluminum panels are paved on the upper side and the lower side of each honeycomb core in a butt joint mode of every two butt joints, the butt joints are positioned on the middle vertical line of each I-shaped beam, and the rivets are positioned on the left side and the right side of the butt joints and penetrate through the aluminum panels and the I-shaped beams and are inserted into the honeycomb cores.
The invention provides a large-size thin aluminum panel honeycomb sandwich structure and a preparation method thereof, and the honeycomb sandwich structure specifically comprises the following steps:
s1, preparing a honeycomb core, an aluminum panel and an I-beam.
S2, cutting and phosphoric acid anodizing the aluminum panel, and splicing the honeycomb cores by utilizing the I-beam.
And S3, adhering aluminum panels to the upper side and the lower side of the spliced honeycomb core, and curing and forming.
S4, fixedly connecting the aluminum panel and the I-beam through rivets, and reinforcing the joint of the honeycomb cores.
Preferably, step S2 coats the non-glued face of the aluminum panel with a protective substance before phosphoric acid anodising, and removes the protective substance after phosphoric acid anodising is completed.
Preferably, the protective substance comprises a chemical milling glue or a polyimide film.
Preferably, step S2 cuts the spliced portion of the honeycomb core according to the shape of the edge of the i-beam before the honeycomb core is spliced by the i-beam, so that the honeycomb core and the i-beam are spliced seamlessly.
Preferably, the number of aluminum panels is not less than two.
Preferably, the step S3 specifically includes the following steps:
s31, coating primer on the bonding surface of the aluminum panel, wherein the primer is used for bonding the honeycomb core and the aluminum panel, and assembling the honeycomb core, the aluminum panel and the I-beam.
S32, using a high-temperature adhesive tape to bond and position the joint, wherein the high-temperature adhesive tape is used for preventing the aluminum panel from shifting, and the high-temperature adhesive tape is cured together with the aluminum panel.
S33, pressurizing and curing the honeycomb sandwich structure by adopting an autoclave.
S34, taking off the high-temperature adhesive tape after curing.
Preferably, the thickness of the aluminum panel is 0.3mm to 0.5mm, wherein in step S33, the aluminum panel having a thickness of 0.3mm is pressed in an autoclave at 0.03 to 0.05Mpa, the aluminum panel having a thickness of 0.4mm is pressed at 0.04 to 0.08Mpa, or the aluminum panel having a thickness of 0.5mm is pressed at 0.08 to 0.1Mpa.
Preferably, the rivet reinforcements are spaced apart a distance of 50 to 100mm.
The invention can obtain the following technical effects:
1. the invention solves the problem of splicing the large-size thin aluminum panel by designing the splicing scheme of the large-size aluminum panel.
2. The invention solves the problem of color difference of the panel caused by the existence of the phosphoric acid anodized film in the process of cleaning the panel and the problem of color difference of the panel in the process of cleaning the subsequent surface wiping by optimizing the surface quality control method of the non-bonding surface before phosphoric acid anodization.
3. The invention not only meets the requirement of the pressurizing pressure, but also avoids the instability of the panel caused by overlarge pressurizing pressure by improving the pressurizing pressure.
Drawings
Fig. 1 is a schematic top view structure of an aluminum panel splicing structure according to an embodiment of the present invention.
Fig. 2 is a schematic side view structure of an aluminum panel splicing structure according to an embodiment of the present invention.
Fig. 3 is a schematic structural view of an i-beam according to an embodiment of the present invention.
Fig. 4 is a schematic flow chart of a method for manufacturing a large-size thin aluminum panel honeycomb sandwich structure according to an embodiment of the invention.
Wherein reference numerals include: the aluminum panel 1, the joint position 2, the I-beam 3, the honeycomb core 4 and the rivet 5.
Detailed Description
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the following description, like modules are denoted by like reference numerals. In the case of the same reference numerals, their names and functions are also the same. Therefore, a detailed description thereof will not be repeated.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limiting the invention.
Fig. 1 and 2 respectively provide an aluminum panel splice structure from two viewpoints according to an embodiment of the present invention, and fig. 3 shows a structure of an i-beam 3 provided according to an embodiment of the present invention.
As shown in fig. 1 to 3, the large-size thin aluminum panel honeycomb sandwich structure provided by the embodiment of the invention comprises an aluminum panel 1, an i-beam 3, a honeycomb core 4 and rivets 5.
I-shaped grooves are formed in two sides of the I-shaped beam 3, two honeycomb cores 4 are inserted into the I-shaped grooves for splicing, the aluminum panel 1 is paved on the upper side and the lower side of the honeycomb cores 4 in a butt joint mode of two-by-two butt joints, the butt joint positions 2 are located on the middle vertical line of the I-shaped beam 3, the rivets 5 are located on the left side and the right side of the butt joint positions 2, penetrate through the aluminum panel 1 and the I-shaped beam 3 and are inserted into the honeycomb cores 4.
Fig. 4 shows a specific flow of a method for manufacturing a large-size thin aluminum panel honeycomb sandwich structure according to an embodiment of the present invention.
As shown in fig. 4, the method for preparing the large-size thin aluminum panel honeycomb sandwich structure provided by the embodiment of the invention specifically comprises the following steps:
s1, preparing a honeycomb core 4, an aluminum panel 1 and an I-beam 3.
The mould material used for preparing the honeycomb sandwich structure is an aluminium alloy material with a coefficient of thermal expansion matched with that of the aluminium panel 1.
S2, cutting and phosphoric acid anodizing the aluminum panel 1, and splicing the honeycomb cores 4 by using the I-beams 3.
Step S2 is to coat the non-adhesive surface of the aluminum panel 1 with a protective substance for protection before the phosphoric acid anodizing is performed, and to remove the protective substance after the phosphoric acid anodizing is completed.
The protective substance comprises chemical milling glue or polyimide film.
In addition, before the honeycomb core 4 is spliced by the I-beam 3, the splicing part of the honeycomb core 4 is cut according to the edge shape of the I-beam 3, so that the honeycomb core 4 and the I-beam 3 are spliced seamlessly.
And S3, adhering the aluminum panels 1 to the upper side and the lower side of the spliced honeycomb core 4, and curing and forming.
The step S3 specifically comprises the following steps:
s31, coating primer on the bonding surface of the aluminum panel 1, wherein the primer is used for bonding the honeycomb core 4 and the aluminum panel 1, and assembling the honeycomb core 4, the aluminum panel 1 and the I-beam 3.
S32, using a high-temperature adhesive tape to bond and position the joint position 2, wherein the high-temperature adhesive tape is used for preventing the aluminum panel 1 from shifting, and the high-temperature adhesive tape is cured together with the aluminum panel 1.
S33, pressurizing and curing the honeycomb sandwich structure by adopting an autoclave.
The thickness of the aluminum panel 1 is 0.3mm to 0.5mm, wherein in step S33, the aluminum panel 1 with the thickness of 0.3mm is pressed in an autoclave at 0.03 Mpa to 0.05Mpa, the aluminum panel 1 with the thickness of 0.4mm is pressed at 0.04 Mpa to 0.08Mpa, or the aluminum panel 1 with the thickness of 0.5mm is pressed at 0.08Mpa to 0.1Mpa.
In order to make the stress of the honeycomb sandwich structure more uniform in the pressurizing process, the autoclave adopts the parameters to realize pressurizing and solidifying the honeycomb sandwich structure, and the large-size thin aluminum panel honeycomb sandwich structure can be prepared.
S34, taking off the high-temperature adhesive tape after curing.
S4, fixedly connecting the aluminum panel 1 and the I-beam 3 through rivets 5, and reinforcing the joint of the honeycomb cores 4, wherein the spacing distance between the reinforcements of the rivets 5 is 50-100 mm. If a single mounting piece exists at the reinforcing position of the rivet 5, the avoidance is performed.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
The above embodiments of the present invention do not limit the scope of the present invention. Any of various other corresponding changes and modifications made according to the technical idea of the present invention should be included in the scope of the claims of the present invention.

Claims (9)

1. The utility model provides a large-scale thin aluminum panel honeycomb sandwich structure, its characterized in that includes honeycomb core, aluminum panel, I-beam and rivet, the both sides of I-beam are formed with the I-beam, insert two honeycomb cores in the I-beam and splice, aluminum panel adopts the mode of two liang butt joints to lay the upper and lower both sides of honeycomb core, and the piece position is located on the perpendicular bisector of I-beam, the rivet is located the left and right sides of piece position, and pass aluminum panel with the I-beam inserts in the honeycomb core.
2. The preparation method of the large-size thin aluminum panel honeycomb sandwich structure is characterized by comprising the following steps of:
s1, preparing the honeycomb core, the aluminum panel and the I-beam;
s2, cutting and phosphoric acid anodizing the aluminum panel, and splicing the honeycomb cores by utilizing the I-beam;
s3, adhering aluminum panels to the upper side and the lower side of the spliced honeycomb core, and solidifying and forming;
s4, fixedly connecting the aluminum panel with the I-beam through rivets, and reinforcing the joint of the honeycomb cores.
3. The method of manufacturing a honeycomb sandwich structure of large-size thin aluminum panels according to claim 2, wherein the step S2 is to coat a non-glued face of the aluminum panels with a protective substance for protection before phosphoric acid anodizing, and to remove the protective substance after phosphoric acid anodizing is completed.
4. A method of making a large size thin aluminum panel honeycomb sandwich structure according to claim 3 wherein said protective substance comprises a chemical milling glue or polyimide film.
5. The method for manufacturing a honeycomb sandwich structure of a large-size thin aluminum panel according to claim 2, wherein the step S2 is to cut the joint of the honeycomb core according to the edge shape of the i-beam before the i-beam is used to splice the honeycomb core, so that the honeycomb core and the i-beam are seamlessly spliced.
6. The method for manufacturing a honeycomb sandwich structure of large-size thin aluminum panels according to claim 2, wherein the number of the aluminum panels is not less than two.
7. The method for manufacturing a honeycomb sandwich structure of large-size thin aluminum panels according to claim 2, wherein the step S3 specifically comprises the following steps:
s31, coating primer on the bonding surface of the aluminum panel, wherein the primer is used for bonding the honeycomb core and the aluminum panel, and assembling the honeycomb core, the aluminum panel and the I-beam;
s32, using a high-temperature adhesive tape to bond and position the joint, wherein the high-temperature adhesive tape is used for preventing the aluminum panel from shifting, and the high-temperature adhesive tape is cured together with the aluminum panel;
s33, pressurizing and curing the honeycomb sandwich structure by adopting an autoclave;
s34, taking off the high-temperature adhesive tape after curing.
8. The method of manufacturing a large-sized thin aluminum panel honeycomb sandwich structure according to claim 6, characterized in that the thickness of the aluminum panel is 0.3mm to 0.5mm, wherein in step S33, the aluminum panel having a thickness of 0.3mm is pressed in the autoclave at 0.03 to 0.05Mpa, the aluminum panel having a thickness of 0.4mm is pressed at 0.04 to 0.08Mpa, or the aluminum panel having a thickness of 0.5mm is pressed at 0.08 to 0.1Mpa.
9. The method of manufacturing a honeycomb sandwich structure of large-size thin aluminum panels as claimed in claim 2, wherein the rivet reinforcement is spaced apart by a distance of 50-100 mm.
CN202310904876.8A 2023-07-21 2023-07-21 Large-size thin aluminum panel honeycomb sandwich structure and preparation method thereof Pending CN116872579A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310904876.8A CN116872579A (en) 2023-07-21 2023-07-21 Large-size thin aluminum panel honeycomb sandwich structure and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310904876.8A CN116872579A (en) 2023-07-21 2023-07-21 Large-size thin aluminum panel honeycomb sandwich structure and preparation method thereof

Publications (1)

Publication Number Publication Date
CN116872579A true CN116872579A (en) 2023-10-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310904876.8A Pending CN116872579A (en) 2023-07-21 2023-07-21 Large-size thin aluminum panel honeycomb sandwich structure and preparation method thereof

Country Status (1)

Country Link
CN (1) CN116872579A (en)

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