Patent ID: 9166212
Filing Date: 2015-10-20
Classification: B29C,B29K,B29L,H01M,Y02E,Y02P,Y02T,Y10T

Abstract:
1. A method for manufacturing a metal-resin composite, comprising: an etching step of immersing an aluminum alloy in first water-soluble amine compound aqueous solution, so as to cover a surface of the aluminum alloy by ultrafine asperities of 20 to 80 nm period or ultrafine recesses or projections of 20 to 80 nm diameter, as well as to let an amine compound adsorbed on the surface; an adsorbing step of immersing the aluminum alloy obtained by the etching step in a second water-soluble amine compound aqueous solution of a concentration of 0.05% to 1% at 15° C. to 45° C. for 1 to 10 min, so as to increase an amount of the adsorbed amine compound; a drying step of drying the aluminum alloy obtained by the adsorbing step at 50° C. to 70° C.; and an injection-joining step of inserting the aluminum alloy obtained by the drying step into an injection mold and injecting a resin composition onto the surface of the aluminum alloy, so as to perform injection molding as well as to join a molded product of the resin composition with the aluminum alloy, wherein the resin composition comprises a rigid crystalline thermoplastic resin that is capable of reacting with the amine compound as a main component.