Connecting method and structure of carbon fiber reinforced composite part and metal part and automobile

Abstract

The invention provides a connecting method and structure of a carbon fiber reinforced composite part and a metal part. The connecting method of the carbon fiber reinforced composite part and the metalpart includes the steps that an adhesive film layer (2) is laid on the surface of the metal part (3), and multiple carbon fiber reinforced composite prepreg layers (7) are laid on the adhesive film layer (2); each metal rod (4) penetrates through the multiple carbon fiber reinforced composite prepreg layers (7), the adhesive film layer (2) and the metal part (3); and the structures of the carbonfiber reinforced composite part and the metal part are transferred into a forming die to be heat-cured, and the multiple carbon fiber reinforced composite prepreg layers (7) are heat-cured to form thecarbon fiber reinforced composite part (1). According to the connecting method of the carbon fiber reinforced composite part and the metal part, the interlayer strength of a carbon fiber reinforced composite can be improved, the stripping-resistant capacity of the adhesive film layer for connecting the carbon fiber reinforced composite with the metal part is improved, and the bearing capacity isimproved.

Description

technical field [0001] The invention relates to assembly technology in the field of automobiles, in particular to a method for connecting a carbon fiber reinforced composite material part and a metal part, a connection structure and an automobile using the connection method. The connection method and connection structure described in the present invention can be used in the manufacture of multiple parts on automobiles Background technique [0002] With the increasing global environmental pollution and energy crisis, energy conservation and emission reduction has become an important issue for the sustainable development of the global automotive industry. As an important means of energy saving and emission reduction, lightweight has been highly valued by various automobile companies, and it is also an effective means for them to improve their competitiveness. Carbon fiber reinforced composite material (English full name is Carbon Fiber Reinforced Polymer / Plastic, abbreviated ...

AI Technical Summary

Problems solved by technology

Among them, adhesive bonding is used for parts that do not require high connection strength, such as body panels. The adhesive bonding structure is prone to aging due to environmental influences and has poor peeling resistance; the mechanical connection has high connection strength and is relatively reliable, and can be used for structural bearings. Force parts, but this connection method needs to open holes in CFRP, destroying the continuity of fibers and affecting the overall performance of CFRP, and stress concentration is prone to occur around the holes

The existing hybrid connection combines the advantages of adhesive bonding and mechanical connection, but the use of fasteners such as rivets and bolts also requires opening holes in CFRP, causing stress concentration problems

There are obvious deficiencies in the connection between CFRP parts and metal parts in the prior art

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