Copper alloy composite and method for manufacturing same

摘要

A method for preparing a copper alloy given a certain special surface shape yields tremendous bonding strength through compatibility with an epoxy resin adhesive. With a composite part in which this technology is utilized to integrate a copper alloy member as a cover material with a CFRP, it is possible to take advantage of the characteristics of both the copper alloy and the FRP due to the tremendous bonding strength. In a step in which an FRP prepreg is put into a mold and heated and cured, usually the mold is first coated with a release agent to facilitate release from the mold, but with high-technology CFRP, bleeding of the release agent often diminishes the properties. A copper alloy sheet 21 is used as a cover material, and a CFRP 22 is cured.

主权项

1. A method for manufacturing a copper alloy composite, comprising:
a step of shaping a copper alloy part by machining from a casting or an intermediate material; a chemical etching step of immersing the shaped copper alloy part in an acidic aqueous solution containing an oxidant; a surface hardening step of immersing the chemically etched copper alloy part in a strongly basic aqueous solution containing an oxidant; a step of coating the hardened surface of the copper alloy part with an uncured epoxy resin; a step of adjusting a prepreg of a fiber-reinforced plastic by adjusting a size of the prepreg; a step of applying the prepreg to the coated side of the copper alloy part; and a step of positioning the prepreg and the copper alloy part, and heating the prepreg and the copper alloy part while holding them down, to cure the epoxy resin component.