Method for manufacturing composite structure of metal and plastic

Abstract

The invention relates to a method for manufacturing a composite structure of metal and plastic. The method comprises the following steps: firstly, stamping a porous coherent metal layer to form at least one first porous metal structure and at least one second porous metal structure, wherein the pore density of the first porous metal structure is less than that of the second porous metal structure; then, welding the at least one second porous metal structure on a surface metal layer; and finally, embedding a plastic body in the at least one first porous metal structure until the surface metal layer to ensure that the plastic body, the at least one first porous metal structure and the surface metal layer are jointed one another to improve the strength of the plastic.

Description

technical field [0001] The invention relates to a method for manufacturing a metal-plastic composite structure, in particular to a method for manufacturing a metal-plastic composite structure in which a porous continuous metal layer is bonded to a surface metal layer and plastic is embedded in porous continuous metal layers with different pore densities . Background technique [0002] At present, in the well-known metal-plastic combination technology, most of them use nano-injection molding technology (NMT, Nano Molding Technology) to make plastics (single polyphenylene sulfide, PPS, polybutylene terephthalate, PBT) ), directly injection molded and then adhered to the metal surface. The principle is that after the metal substrate is acid-etched to create nano-holes, soaking a specific chemical agent to fill the nano-holes with the chemical agent, and then injecting the specific plastic directly on the metal surface, due to the replacement of the specific plastic and the spe...

AI Technical Summary

Problems solved by technology

The principle is that after the metal substrate is acid-etched to create nano-holes, soaking a specific chemical agent to fill the nano-holes with the chemical agent, and then injecting the specific plastic directly on the metal surface, due to the replacement of the specific plastic and the specific chemical agent Reaction and sticking together, this method of changing the intramolecular bonding of plastics through chemical reactions can effectively combine plastics and metals directly, but because only specific plastics can be used, it will cause embrittlement of the subsequent surface treatment, and Troublesome Chemical Wet Process Handling

Or, in the technology of combining metal and plastic, adhesives such as quick-drying glue or light-curing resin glue are used to directly fix them with fixtures, and then the plastic structure and the metal substrate are bonded to each other by drying the adhesive, which is complicated. The multi-step processing procedure will only increase the cost of manpower and cost, and the chemical stability of the adhesive itself and the joint surface of the two are relatively poor in impact resistance.

If the above two known technologies are used, the scope of application will be limited for consumer electronic products that are environmentally friendly and have practicality and durability.

Images