Method of preparing aluminum-resin complex

摘要

Provided is a method of preparing an aluminum-resin complex in which an aluminum alloy and a resin composition are integrated with each other. More particularly, the present invention is relates to a method of preparing an aluminum-resin complex having improved bonding strength by preparing an aluminum alloy having a more uniform etching surface using an alkaline aqueous solution to which a chelating agent and a cycloamine are added and an acidic aqueous solution to which a chelating agent is added and injection-molding a resin composition using the aluminum alloy.

主权项

1. A method of preparing an aluminum-resin complex comprising:
preparing an aluminum alloy material having an etched surface; and injection-molding a resin composition on the etched surface of the aluminum alloy material to thereby be integrated with each other, wherein the preparing of the aluminum alloy material includes:
i) a primary processing process of treating the aluminum alloy material with an alkaline aqueous solution to which a chelating agent and a cycloamine are added; andii) a secondary processing process of treating the aluminum alloy material with an acidic aqueous solution to which a chelating agent is added; and wherein the etched surface of the aluminum alloy material has an average inner diameter of 0.1 to 10 μm and an average surface roughness of 50 to 200 μm.