CN117922145A - Aluminum honeycomb sandwich mixed fiber composite board and manufacturing method thereof - Google Patents

Aluminum honeycomb sandwich mixed fiber composite board and manufacturing method thereof Download PDF

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Publication number
CN117922145A
CN117922145A CN202410135111.7A CN202410135111A CN117922145A CN 117922145 A CN117922145 A CN 117922145A CN 202410135111 A CN202410135111 A CN 202410135111A CN 117922145 A CN117922145 A CN 117922145A
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China
Prior art keywords
aluminum honeycomb
composite board
fiber
epoxy resin
aramid
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Pending
Application number
CN202410135111.7A
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Chinese (zh)
Inventor
孔新立
冯飞
何湖广
王鹏
王文烨
陈艺顺
周寅智
吴建钦
岳政圆
宋新宇
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Army Engineering University of PLA
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Army Engineering University of PLA
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Priority to CN202410135111.7A priority Critical patent/CN117922145A/en
Publication of CN117922145A publication Critical patent/CN117922145A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—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
    • 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
    • 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
    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/08—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer the fibres or filaments of a layer being of different substances, e.g. conjugate fibres, mixture of different fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/05—5 or more layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0261—Polyamide fibres
    • B32B2262/0269—Aromatic polyamide fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/106—Carbon fibres, e.g. graphite fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/14—Mixture of at least two fibres made of different materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties

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  • Laminated Bodies (AREA)

Abstract

The invention discloses an aluminum honeycomb sandwich mixed fiber composite board and a manufacturing method thereof, wherein the manufacturing method comprises the following steps: mixing aramid fiber and high-strength carbon fiber to prepare a fiber composite board, coating epoxy resin glue on the fiber composite board, and reacting at normal temperature in an air environment to prepare an upper panel and a lower panel; cutting aramid fiber cloth into short fiber bundles, and then placing the short fiber bundles into a wall breaking machine for stirring to obtain dispersed short fiber bundles; uniformly spreading the dispersed short fiber bundles on the lower surface of the upper panel and the upper surface of the lower panel to form a toughened aramid short fiber film uniformly distributed; uniformly brushing epoxy resin glue on the upper and lower surfaces of the aluminum honeycomb core and the surface of the toughened aramid short fiber film to form a bonding layer, and then standing at normal temperature. According to the aluminum honeycomb sandwich mixed fiber composite board and the manufacturing method thereof, the compression resistance of the whole honeycomb sandwich structure can be improved, and the bonding strength between the aluminum honeycomb panel and the core material interface can be improved.

Description

Aluminum honeycomb sandwich mixed fiber composite board and manufacturing method thereof
Technical Field
The invention relates to an aluminum honeycomb sandwich mixed fiber composite board and a manufacturing method thereof, and belongs to the technical field of honeycomb interlayers.
Background
The composite material is a mixture, is a new material which is formed by optimally combining material components with different properties by using advanced material preparation technology, but maintains the advantages of the material properties of each component. The composite material plays a very important role in the development of modern science and technology. The honeycomb sandwich structure is used as a relatively common composite material, and is widely applied because of excellent characteristics since the advent, wherein the aluminum honeycomb structure with aluminum material as a honeycomb core is commonly applied to various fields of aerospace, protection engineering and the like because of the characteristics of light weight, high specific strength, high specific rigidity and the like. However, the honeycomb sandwich structure has the following problems: firstly, an aluminum honeycomb panel in a honeycomb sandwich structure is generally made of an aramid composite material, and the compression resistance of the aramid composite material is poor, so that the compression resistance of the whole honeycomb sandwich structure is affected; and secondly, the bonding between the aluminum honeycomb panel and the core material interface is low, so that the mechanical property of the honeycomb sandwich structure is affected.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides an aluminum honeycomb sandwich mixed fiber composite board and a manufacturing method thereof, which can improve the overall compression resistance of a honeycomb sandwich structure and the bonding strength between an aluminum honeycomb panel and a core material interface.
In order to solve the technical problems, the invention adopts the following technical scheme:
the manufacturing method of the aluminum honeycomb sandwich mixed fiber composite board comprises the following steps:
Step a, mixing aramid fibers and high-strength carbon fibers to obtain a fiber composite board, coating epoxy resin glue on the fiber composite board, soaking epoxy resin in the epoxy resin glue among fibers in the fiber composite board, and reacting at normal temperature in an air environment to obtain an upper panel and a lower panel;
Step b, cutting the aramid fiber cloth into short fiber bundles, then placing the short fiber bundles into a wall breaking machine, and stirring to fully disperse the short fiber bundles which are originally gathered together, thus obtaining dispersed short fiber bundles;
Step c, uniformly spreading the dispersed short fiber bundles on the lower surface of the upper panel and the upper surface of the lower panel, and respectively forming uniformly distributed toughened aramid short fiber films on the upper panel and the lower panel;
and d, uniformly brushing epoxy resin glue on the upper surface and the lower surface of the aluminum honeycomb core and the surfaces of the toughened aramid staple fiber films, forming a bonding layer between the upper surface of the aluminum honeycomb core and the toughened aramid staple fiber films on the upper panel and between the lower surface of the aluminum honeycomb core and the toughened aramid staple fiber films on the lower panel, and standing at normal temperature.
In the step a, the mass ratio of the aramid fiber to the high-strength carbon fiber is 1:0.8 to 1.2; the epoxy resin adhesive is prepared from epoxy resin and an epoxy curing agent according to the following weight ratio of 1: mixing the materials according to the mass ratio of 0.8-1.2; coating epoxy resin glue on the fiber composite board in a hand coating mode; the reaction time at normal temperature is 36-48 hours.
In the step b, the length of the short fiber bundles is 5-6 mm; the stirring time is 0.5-1.5 minutes.
In the step d, uniformly brushing epoxy resin glue on the upper surface and the lower surface of the aluminum honeycomb core, and manually coating the surface of the toughened aramid short fiber film; the epoxy resin adhesive is prepared from epoxy resin and an epoxy curing agent according to the following weight ratio of 1: mixing the materials according to the mass ratio of 0.8-1.2.
The high-strength carbon fiber is carbon fiber T300.
The height of the aluminum honeycomb core is 50mm, the thickness of the honeycomb structure is 0.15mm, the diameter is 10mm, and the thickness of the rib plate is 5mm.
The aluminum honeycomb sandwich mixed fiber composite board is manufactured by the manufacturing method of the aluminum honeycomb sandwich mixed fiber composite board.
The invention has the beneficial effects that: according to the aluminum honeycomb sandwich mixed fiber composite board and the manufacturing method thereof provided by the invention, the upper panel and the lower panel are made of the composite material made of the aramid fiber, the high-strength carbon fiber and the epoxy resin, and the thermal expansion coefficient of the aramid fiber and the carbon fiber is very similar, so that the compressive property of the hybrid composite material made of the aramid fiber and the carbon fiber used for the panel can be obviously improved. The aluminum honeycomb has the advantages of light weight, high strength, good compression resistance, convenient molding and simple process, has good energy absorption characteristics under static compression and dynamic impact load, and adopts an aramid fiber short fiber toughening method between the panel and the aluminum honeycomb core; the aluminum honeycomb is adopted as the core layer, so that the aluminum honeycomb has light weight and is simple to manufacture; the epoxy resin adhesive used in the invention is manufactured by adopting a hand coating method, the molding conditions are all normal temperature, large-scale machine equipment is not needed during manufacturing, the manufacturing difficulty and the manufacturing requirement are low, the working procedure is simple, and the process is stable.
Drawings
FIG. 1 is a schematic view of an aluminum honeycomb sandwich hybrid fiber composite panel according to the present invention;
fig. 2 is a schematic structural view of an aluminum honeycomb core in accordance with the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, and the following examples are only for more clearly illustrating the technical aspects of the present invention, and are not to be construed as limiting the scope of the present invention.
Example 1
The invention provides a preparation method of a chopped aramid fiber toughened aluminum honeycomb sandwich mixed fiber composite board, which has the advantages of simple and convenient manufacturing process and easy preparation, and comprises the following steps:
Step one, mixing aramid fiber and high-strength carbon fiber to obtain a fiber composite board, wherein the mass ratio of the aramid fiber to the high-strength carbon fiber is 1:0.8, wherein the high-strength carbon fiber is carbon fiber T300. And then the epoxy resin glue is coated on the fiber composite board in a hand coating mode, so that the epoxy resin in the epoxy resin glue is soaked among fibers in the fiber composite board. The epoxy resin adhesive is prepared from epoxy resin and an epoxy curing agent according to the following weight ratio of 1:1.2 by mass ratio. After reacting for 36 hours at normal temperature in an air environment, an upper panel and a lower panel are manufactured.
Cutting the aramid fiber cloth into short fiber bundles with the length of 6mm, putting the short fiber bundles into a wall breaking machine, stirring for 1.5 minutes to enable the short fiber bundles which are originally gathered together to be fully dispersed, and changing the original 'blocky' of the aramid fiber into the fluffy 'flocculent' to obtain the dispersed short fiber bundles.
And thirdly, uniformly spreading the dispersed short fiber bundles on the lower surface of the upper panel and the upper surface of the lower panel, and respectively forming uniformly distributed toughened aramid short fiber films on the upper panel and the lower panel. The toughening aramid short fiber has only one layer, so that the weight of the component is not increased, and the bonding force between the panel and the aluminum honeycomb core is increased.
Brushing the epoxy resin glue on the upper surface and the lower surface of the aluminum honeycomb core and the surface of the toughened aramid short fiber film in a hand coating mode, wherein the epoxy resin glue is prepared from epoxy resin and an epoxy curing agent according to a ratio of 1: and 0.8, and forming a bonding layer between the upper surface of the aluminum honeycomb core and the toughened aramid short fiber film on the upper panel and between the lower surface of the aluminum honeycomb core and the toughened aramid short fiber film on the lower panel, and then standing at normal temperature. As shown in FIG. 2, the aluminum honeycomb core had a height of 50mm, a honeycomb thickness of 0.15mm and a diameter of 10mm.
As shown in FIG. 1, the invention also discloses an aluminum honeycomb sandwich mixed fiber composite board, which is manufactured by the manufacturing method of the aluminum honeycomb sandwich mixed fiber composite board, and can effectively improve the mechanical property, the energy absorption property and the impact resistance of the board.
Example 2
The invention provides a preparation method of a chopped aramid fiber toughened aluminum honeycomb sandwich mixed fiber composite board, which has the advantages of simple and convenient manufacturing process and easy preparation, and comprises the following steps:
Step one, mixing aramid fiber and high-strength carbon fiber to obtain a fiber composite board, wherein the mass ratio of the aramid fiber to the high-strength carbon fiber is 1:1.2, wherein the high-strength carbon fiber is carbon fiber T300. And then the epoxy resin glue is coated on the fiber composite board in a hand coating mode, so that the epoxy resin in the epoxy resin glue is soaked among fibers in the fiber composite board. The epoxy resin adhesive is prepared from epoxy resin and an epoxy curing agent according to the following weight ratio of 1:0.8 mass ratio. After reacting for 48 hours at normal temperature in an air environment, an upper panel and a lower panel are manufactured.
Cutting the aramid fiber cloth into short fiber bundles with the length of 5mm, putting the short fiber bundles into a wall breaking machine, stirring for 1.5 minutes to enable the short fiber bundles which are originally gathered together to be fully dispersed, and changing the original 'blocky' of the aramid fiber into the fluffy 'flocculent' to obtain the dispersed short fiber bundles.
And thirdly, uniformly spreading the dispersed short fiber bundles on the lower surface of the upper panel and the upper surface of the lower panel, and respectively forming uniformly distributed toughened aramid short fiber films on the upper panel and the lower panel. The toughening aramid short fiber has only one layer, so that the weight of the component is not increased, and the bonding force between the panel and the aluminum honeycomb core is increased.
Brushing the epoxy resin glue on the upper surface and the lower surface of the aluminum honeycomb core and the surface of the toughened aramid short fiber film in a hand coating mode, wherein the epoxy resin glue is prepared from epoxy resin and an epoxy curing agent according to a ratio of 1: and the aluminum honeycomb core is prepared by mixing the materials according to the mass ratio of 0.8-1.2, so that a bonding layer is formed between the upper surface of the aluminum honeycomb core and the toughened aramid short fiber film on the upper panel and between the lower surface of the aluminum honeycomb core and the toughened aramid short fiber film on the lower panel, and then the aluminum honeycomb core is kept stand at normal temperature. As shown in FIG. 2, the aluminum honeycomb core had a height of 50mm, a honeycomb thickness of 0.15mm and a diameter of 10mm.
As shown in FIG. 1, the invention also discloses an aluminum honeycomb sandwich mixed fiber composite board, which is manufactured by the manufacturing method of the aluminum honeycomb sandwich mixed fiber composite board, and can effectively improve the mechanical property, the energy absorption property and the impact resistance of the board.
Example 3
The invention provides a preparation method of a chopped aramid fiber toughened aluminum honeycomb sandwich mixed fiber composite board, which has the advantages of simple and convenient manufacturing process and easy preparation, and comprises the following steps:
Step one, mixing aramid fiber and high-strength carbon fiber to obtain a fiber composite board, wherein the mass ratio of the aramid fiber to the high-strength carbon fiber is 1:1, wherein the high-strength carbon fiber is carbon fiber T300. And then the epoxy resin glue is coated on the fiber composite board in a hand coating mode, so that the epoxy resin in the epoxy resin glue is soaked among fibers in the fiber composite board. The epoxy resin adhesive is prepared from epoxy resin and an epoxy curing agent according to the following weight ratio of 1:1 mass ratio. After reacting for 42 hours at normal temperature in an air environment, an upper panel and a lower panel are manufactured.
Cutting the aramid fiber cloth into short fiber bundles with the length of 5.5mm, putting the short fiber bundles into a wall breaking machine, stirring for 1 minute to enable the short fiber bundles which are originally gathered together to be fully dispersed, and changing the original 'blocky' of the aramid fiber into the fluffy 'flocculent' to obtain dispersed short fiber bundles.
And thirdly, uniformly spreading the dispersed short fiber bundles on the lower surface of the upper panel and the upper surface of the lower panel, and respectively forming uniformly distributed toughened aramid short fiber films on the upper panel and the lower panel. The toughening aramid short fiber has only one layer, so that the weight of the component is not increased, and the bonding force between the panel and the aluminum honeycomb core is increased.
Brushing the epoxy resin glue on the upper surface and the lower surface of the aluminum honeycomb core and the surface of the toughened aramid short fiber film in a hand coating mode, wherein the epoxy resin glue is prepared from epoxy resin and an epoxy curing agent according to a ratio of 1: and 1, mixing the materials according to the mass ratio to form a bonding layer between the upper surface of the aluminum honeycomb core and the toughened aramid short fiber film on the upper panel and between the lower surface of the aluminum honeycomb core and the toughened aramid short fiber film on the lower panel, and standing at normal temperature. As shown in FIG. 2, the aluminum honeycomb core had a height of 50mm, a honeycomb thickness of 0.15mm and a diameter of 10mm.
As shown in FIG. 1, the invention also discloses an aluminum honeycomb sandwich mixed fiber composite board, which is manufactured by the manufacturing method of the aluminum honeycomb sandwich mixed fiber composite board, and can effectively improve the mechanical property, the energy absorption property and the impact resistance of the board.
The foregoing is only a preferred embodiment of the invention, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.

Claims (7)

1. A manufacturing method of an aluminum honeycomb sandwich mixed fiber composite board is characterized by comprising the following steps: the method comprises the following steps:
Step a, mixing aramid fibers and high-strength carbon fibers to obtain a fiber composite board, coating epoxy resin glue on the fiber composite board, soaking epoxy resin in the epoxy resin glue among fibers in the fiber composite board, and reacting at normal temperature in an air environment to obtain an upper panel and a lower panel;
Step b, cutting the aramid fiber cloth into short fiber bundles, then placing the short fiber bundles into a wall breaking machine, and stirring to fully disperse the short fiber bundles which are originally gathered together, thus obtaining dispersed short fiber bundles;
Step c, uniformly spreading the dispersed short fiber bundles on the lower surface of the upper panel and the upper surface of the lower panel, and respectively forming uniformly distributed toughened aramid short fiber films on the upper panel and the lower panel;
and d, uniformly brushing epoxy resin glue on the upper surface and the lower surface of the aluminum honeycomb core and the surfaces of the toughened aramid staple fiber films, forming a bonding layer between the upper surface of the aluminum honeycomb core and the toughened aramid staple fiber films on the upper panel and between the lower surface of the aluminum honeycomb core and the toughened aramid staple fiber films on the lower panel, and standing at normal temperature.
2. The method for manufacturing the aluminum honeycomb sandwich mixed fiber composite board according to claim 1, wherein the method comprises the following steps: in the step a, the mass ratio of the aramid fiber to the high-strength carbon fiber is 1:0.8 to 1.2; the epoxy resin adhesive is prepared from epoxy resin and an epoxy curing agent according to the following weight ratio of 1: mixing the materials according to the mass ratio of 0.8-1.2; coating epoxy resin glue on the fiber composite board in a hand coating mode; the reaction time at normal temperature is 36-48 hours.
3. The method for manufacturing the aluminum honeycomb sandwich mixed fiber composite board according to claim 1, wherein the method comprises the following steps: in the step b, the length of the short fiber bundles is 5-6 mm; the stirring time is 0.5-1.5 minutes.
4. The method for manufacturing the aluminum honeycomb sandwich mixed fiber composite board according to claim 1, wherein the method comprises the following steps: in the step d, uniformly brushing epoxy resin glue on the upper surface and the lower surface of the aluminum honeycomb core, and manually coating the surface of the toughened aramid short fiber film; the epoxy resin adhesive is prepared from epoxy resin and an epoxy curing agent according to the following weight ratio of 1: mixing the materials according to the mass ratio of 0.8-1.2.
5. The method for manufacturing the aluminum honeycomb sandwich mixed fiber composite board according to claim 2, wherein the method comprises the following steps: the high-strength carbon fiber is carbon fiber T300.
6. The method for manufacturing the aluminum honeycomb sandwich mixed fiber composite board according to claim 1, wherein the method comprises the following steps: the aluminum honeycomb core has a height of 50mm, a honeycomb structure thickness of 0.15mm and a diameter of 10mm.
7. An aluminum honeycomb sandwich mixed fiber composite board, which is characterized in that: a composite board made by the method for making an aluminum honeycomb sandwich mixed fiber composite board according to any one of claims 1 to 6.
CN202410135111.7A 2024-01-31 2024-01-31 Aluminum honeycomb sandwich mixed fiber composite board and manufacturing method thereof Pending CN117922145A (en)

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CN202410135111.7A CN117922145A (en) 2024-01-31 2024-01-31 Aluminum honeycomb sandwich mixed fiber composite board and manufacturing method thereof

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Application Number Priority Date Filing Date Title
CN202410135111.7A CN117922145A (en) 2024-01-31 2024-01-31 Aluminum honeycomb sandwich mixed fiber composite board and manufacturing method thereof

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