Metal-plastic composite structure, preparation method therefor and application thereof

By forming an oxide film layer on the surface of metal layers of different materials and then stacking a plastic layer, the problem of insufficient bonding between metal and plastic in composite metal shells is solved, achieving strong bonding and stability, which is suitable for industrial production and electronic equipment applications.

WO2025251690A9 Publication Date: 2026-04-23BYD CO LTD
0 Cites 0 Cited by

Patent Information

Application Number
PCT/CN2025/078553
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-06-04
Filing Date
2025-02-21
Publication Date
2026-04-23

AI Technical Summary

Technical Problem

In existing technologies, while composite metal shells achieve high strength and lightweight, the bonding ability between metal and plastic is insufficient, and the performance differences between different metals make surface treatment difficult, making industrialization difficult.

Method used

Anodizing is used to form an oxide film on the surface of metal layers of different materials, and plastic layers are sequentially stacked on the oxide film to form a nanoporous structure to improve the bonding force. Fluorine-containing electrolyte is used for treatment during the bonding process, and injection molding is used to form a metal-plastic composite structure.

Benefits of technology

It achieves strong bonding and stability in metal-plastic composite structures, simplifies the manufacturing process, is suitable for industrial production, and improves the reliability of applications in fields such as electronic devices.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

A plastic composite structure, a preparation method therefor and an application thereof. The plastic composite structure comprises: a first metal layer and a second metal layer which are stacked and connected to each other, wherein the first metal layer and the second metal layer are made of different materials; and a first oxide film layer and a first plastic layer which are sequentially stacked on the surface of the first metal layer that is not connected to the second metal layer, and / or a second oxide film layer and a second plastic layer which are sequentially stacked on the surface of the second metal layer that is not connected to the first metal layer. The first oxide film layer comprises a plurality of first nanopores, and the minimum distance between two adjacent first nanopores is less than or equal to 50 nm; and / or the second oxide film layer comprises a plurality of second nanopores, and the minimum distance between two adjacent second nanopores is less than or equal to 50 nm.
Need to check novelty before this filing date? Find Prior Art