Compound of aluminum or aluminum alloy and plastics and manufacturing method thereof

Abstract

The invention provides a compound of aluminum or an aluminum alloy and plastics and a manufacturing method thereof. The compound comprises an aluminum or aluminum alloy substrate and a plastic piece which is combined with the aluminum or aluminum alloy substrate through injection molding, wherein the aluminum or aluminum alloy substrate is subjected to electrochemical etching, thus the surface of the aluminum or aluminum alloy substrate is etched from the surface to the inside to form a plurality of nano holes; and the plastic piece is made of crystalline thermoplastic plastics. The manufacturing method of the compound comprises the following steps: providing the aluminum or aluminum alloy substrate; carrying out electrochemical etching treatment on the aluminum or aluminum alloy substrate, thus the surface of the aluminum or aluminum alloy substrate is etched from the surface to the inside to form the plurality of nano holes; and placing the aluminum or aluminum alloy substrate subjected to electrochemical etching into an injection molding mould, and combining the injection molding piece on the surface of the aluminum or aluminum alloy substrate, thus the compound is obtained, wherein the molding piece is made of crystalline thermoplastic plastics.

Description

technical field [0001] The invention relates to a composite of aluminum or aluminum alloy and plastic and a manufacturing method thereof, in particular to a composite of aluminum or aluminum alloy and plastic with strong binding force and a manufacturing method of the composite. Background technique [0002] As the shell or components of 3C products, aluminum or aluminum alloy can be connected with other materials by welding, mechanical connection and bonding. Among them, welding is the most important connection method for aluminum or aluminum alloy. But when aluminum or aluminum alloy is connected with plastic parts, it is necessary to use the bonding method. The bonding method refers to a method of combining aluminum or aluminum alloy with plastic parts by using adhesive as an intermediate interface material. [0003] Although the bonding method can realize the connection between aluminum or aluminum alloy and plastic parts, it has the following disadvantages: the bondin...

AI Technical Summary

Problems solved by technology

[0003] Although the bonding method can realize the connection between aluminum or aluminum alloy and plastic parts, it has the following disadvantages: the bonding strength is not high enough, and its bonding force is generally only up to 0.5MPa; it is difficult to automate and is affected by the proficiency of the operator; The working temperature is affected by the performance of the adhesive, and generally it can only work normally within the temperature range of -50-100°C; under ambient light, heat, humidity and other factors, the adhesive will cause aging and fracture; most adhesives are toxic, and the operation process It emits irritating gas, which is harmful to human health

However, the above-mentioned aqueous solution immersion method needs to use toxic and harmful amine compounds, and the anodic oxidation treatment process is long and the production efficiency is low

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