Laminated structure of metal plate and non-metal plate

Abstract

The invention relates to a laminated structure of a metal plate and a non-metal plate, which comprises a glue film and a glue film clamped between a fiber resin composite prepreg and a metal plate, the surface of the metal plate is provided with a plurality of guide grooves, a group of grooves are arranged between any two adjacent guide grooves, the grooves enable any two adjacent guide grooves to be communicated with each other, and the glue film is arranged between the fiber resin composite prepreg and the metal plate. Any two adjacent grooves in each group of grooves are encircled to form a boss, the boss is arranged on one side facing the adhesive film, the cross section of the boss is trapezoidal, and the cross section of the groove is triangular. According to the technical scheme provided by the invention, the crisscrossed guide grooves and grooves are formed in the surface of the metal plate, so that the contact area between the metal plate and the adhesive film and the contact area between the fiber resin composite prepreg and the adhesive film are increased, and part of the fiber resin composite prepreg and the metal plate are embedded in the metal surface; and the bonding strength between the fiber resin composite prepreg and the metal plate is enhanced under the condition that the fiber resin composite prepreg is not damaged.

Description

Technical Field

[0001] The invention belongs to the technical field of assembly, and in particular relates to a laminated structure of a metal plate and a non-metal plate. Background Art

[0002] Carbon fiber composite materials are considered to be a lightweight material with good application prospects due to their high strength, large specific modulus, good corrosion resistance, and strong designability. They can be used for body panels and structural parts. Components made of carbon fiber composite materials inevitably need to be connected to metal parts. When connecting carbon fiber composite components to metal parts, the connection area is usually the weak link in load bearing. At present, the commonly used connection technologies for connecting carbon fiber composite components to metals are adhesive bonding, mechanical bonding, and hybrid bonding. Among them, adhesive bonding is used for parts with low connection strength requirements, such as body panels. The adhesive bonding structure is easily affected by the environment and aging occurs, and the peeling resistance is poor; the connection strength of mechanical connection is high and more reliable. It can be used for structural load-bearing parts, but this connection method requires opening holes in carbon fiber composite components, destroying the continuity of the fibers and thus affecting the overall performance of carbon fiber composite components, and stress concentration is prone to occur around the holes. The existing hybrid connection combines the advantages of both adhesive bonding and mechanical connection, but the use of fasteners such as rivets and bolts also requires opening holes in carbon fiber composite components, resulting in stress concentration problems. There are obvious deficiencies in the connection between carbon fiber composite components and metal parts in the prior art.

[0003] For example, a patent document with publication number "CN110315784A" discloses a method for connecting a carbon fiber reinforced composite material part and a metal part, and the steps of the method for connecting a carbon fiber reinforced composite material part and a metal part are as follows: laying an adhesive film layer on the surface of the metal part, and laying a plurality of carbon fiber reinforced composite material prepreg layers on the adhesive film layer; each metal rod passes through the plurality of carbon fiber reinforced composite material prepreg layers, the adhesive film layer, and the metal part respectively; the carbon fiber reinforced composite material part and the metal part structure are transferred to a molding mold for heating and curing, and the plurality of carbon fiber reinforced composite material prepreg layers are subjected to heating and curing treatment to form a carbon fiber reinforced composite material part. The above-mentioned connection structure combines the adhesive structure with the mechanical connection structure. Although the connection strength between the carbon fiber reinforced composite material and the metal part is enhanced, it is still necessary to perforate the surface of the carbon fiber reinforced composite material component, which destroys the continuity of the carbon fiber and affects the overall performance of the carbon fiber reinforced composite material. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a stacked structure of a metal plate and a non-metal plate.

[0005] The present invention provides a stacked structure of a metal plate and a non-metal plate, comprising an adhesive film, wherein the adhesive film is sandwiched between a fiber resin-based prepreg and a metal plate, wherein a plurality of guide grooves are arranged on the surface of the metal plate, wherein a group of grooves are arranged between any two adjacent guide grooves, wherein the grooves interconnect any two adjacent guide grooves, wherein a boss is formed between any two adjacent grooves in each group of grooves, wherein the boss is arranged on a side facing the adhesive film, wherein the cross section of the boss is a trapezoid, and the cross section of the groove is a triangle.

[0006] The length direction of the guide grooves is consistent with the length direction of the metal plate, and the length directions of any two adjacent groups of guide grooves are parallel to each other.

[0007] The distance between two adjacent guide grooves is 30 mm to 80 mm.

[0008] Along the width direction of the metal plate, the corresponding grooves in two adjacent groups of grooves are arranged alternately with each other.

[0009] The depth of the groove is smaller than the depth of the guide groove.

[0010] The groove has a notch width of 30 mm to 80 mm.

[0011] The depth of the guide groove is 0.4 mm to 1.2 mm.

[0012] The ratio of the number of the grooves to the number of the guide grooves is 3:1 to 10:1.

[0013] In each group of grooves, the angle between the side surfaces of any two adjacent bosses is 45° to 60°.

[0014] The width of the boss is 60 mm to 200 mm.

[0015] The beneficial effects of the present invention are as follows: by adopting the technical solution provided by the present invention, criss-cross guide grooves and grooves are arranged on the surface of the metal plate, and when the fiber resin-based prepreg and the metal plate are bonded together by coating an adhesive film, the contact area between the metal plate and the adhesive film, and between the fiber resin-based prepreg and the adhesive film is increased, and part of the fiber resin-based prepreg and the metal plate are embedded in the inside of the metal surface, thereby enhancing the bonding strength between the fiber resin-based prepreg and the metal plate without damaging the fiber resin-based prepreg component, thereby avoiding damage to the carbon fibers inside the fiber resin-based prepreg. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of the present invention;

[0017] Figure 2 It is an axonometric view of the metal plate of the present invention.

[0018] In the figure: 1-adhesive film, 2-fiber resin-based prepreg, 3-metal plate, 31-guide groove, 32-groove, 33-boss. DETAILED DESCRIPTION

[0019] The technical solution of the present invention is further described below in conjunction with the accompanying drawings, but the claimed protection scope is not limited to the above;

[0020] The present invention provides a laminated structure of a metal sheet and a non-metal sheet, such as Figure 1 to Figure 2 As shown, the laminated structure of the metal sheet and the non-metal sheet includes an adhesive film 1, which is sandwiched between the fiber resin-based prepreg 2 and the metal plate 3. The surface of the metal plate 3 is provided with a plurality of guide grooves 31, and a group of grooves 32 is provided between any two adjacent guide grooves 31. The grooves 32 make any two adjacent guide grooves 31 interconnected. A boss 33 is formed between any two adjacent grooves 32 in each group of grooves 32. The boss 33 is provided on the side facing the adhesive film 1. The cross section of the boss 33 is a trapezoid, and the cross section of the groove 32 is a triangle.

[0021] By adopting the technical solution provided by the present invention, criss-cross guide grooves and grooves are arranged on the surface of the metal plate. When the fiber resin-based prepreg and the metal plate are bonded together by coating an adhesive film, the contact area between the metal plate and the adhesive film, and between the fiber resin-based prepreg and the adhesive film is increased, and part of the fiber resin-based prepreg and the metal plate are embedded in the metal surface. The bonding strength between the fiber resin-based prepreg and the metal plate is enhanced without damaging the fiber resin-based prepreg component, thereby avoiding damage to the carbon fibers inside the fiber resin-based prepreg.

[0022] Specifically, the length direction of the guide groove 31 is consistent with the length direction of the metal plate 3, and the length directions of any two adjacent groups of guide grooves 31 are parallel to each other. The spacing between two adjacent guide grooves 31 is 30 mm to 80 mm. Along the width direction of the metal plate 3, the corresponding grooves 32 in two adjacent groups of grooves 32 are arranged alternately with each other. The depth of the groove 32 is less than the depth of the guide groove 31.

[0023] Preferably, the slot width of the groove 32 is 30 mm to 80 mm. The depth of the guide groove 31 is 0.4 mm to 1.2 mm. The ratio of the number of grooves 32 to the number of guide grooves 31 is 3:1 to 10:1. In each group of grooves 32, the angle between the sides of any two adjacent bosses 33 is 45° to 60°. The width of the boss 33 is 60 mm to 200 mm. The number of fiber resin-based prepregs 2 is 3 to 15 layers. The adhesive film is preferably one of epoxy resin adhesive film, phenolic resin adhesive film, cyanate adhesive film, and bismaleimide resin adhesive film.

Claims

1. A laminated structure of a metal sheet and a non-metal sheet, characterized in that: The invention comprises an adhesive film (1), wherein the adhesive film (1) is sandwiched between a fiber resin-based prepreg (2) and a metal plate (3), wherein a plurality of guide grooves (31) are arranged on the surface of the metal plate (3), wherein a group of grooves (32) are arranged between any two adjacent guide grooves (31), wherein the grooves (32) interconnect any two adjacent guide grooves (31), wherein a boss (33) is formed between any two adjacent grooves (32) in each group of grooves (32), wherein the boss (33) is arranged on a side facing the adhesive film (1), wherein the cross section of the boss (33) is a trapezoid, and the cross section of the groove (32) is a triangle.

2. The laminated structure of a metal sheet and a non-metal sheet as claimed in claim 1, characterized in that: The length direction of the guide grooves (31) is consistent with the length direction of the metal plate (3), and the length directions of any two adjacent groups of guide grooves (31) are parallel to each other.

3. The laminated structure of a metal sheet and a non-metal sheet as claimed in claim 2, characterized in that: The distance between two adjacent guide grooves (31) is 30 mm to 80 mm.

4. The laminated structure of a metal sheet and a non-metal sheet as claimed in claim 1, characterized in that: Along the width direction of the metal plate (3), the corresponding grooves (32) in two adjacent groups of grooves (32) are arranged in a staggered manner.

5. The laminated structure of a metal sheet and a non-metal sheet as claimed in claim 1 or 4, characterized in that: The depth of the groove (32) is smaller than the depth of the guide groove (31).

6. The laminated structure of a metal sheet and a non-metal sheet as claimed in claim 5, characterized in that: The groove (32) has a slot width of 30 mm to 80 mm.

7. The laminated structure of a metal sheet and a non-metal sheet as claimed in claim 5, characterized in that: The depth of the guide groove (31) is 0.4 mm to 1.2 mm.

8. The laminated structure of a metal sheet and a non-metal sheet as claimed in claim 5, characterized in that: The ratio of the number of the grooves (32) to the number of the guide grooves (31) is 3:1 to 10:

1.

9. The laminated structure of a metal sheet and a non-metal sheet as claimed in claim 1, characterized in that: In each group of grooves (32), the angle between the side surfaces of any two adjacent bosses (33) is 45° to 60°.

10. The laminated structure of a metal sheet and a non-metal sheet as claimed in claim 1 or 9, characterized in that: The width of the boss (33) is 60 mm to 200 mm.

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