Metal laminate-polymer resin composite and method of manufacturing the same

A method of preparing a metal laminate-polymer resin composite, the metal laminate-polymer resin composite comprising:

• a metal laminate formed of copper and aluminum laminated therein;
• and a polymer resin,
• the method comprising:
• a degreasing step of degreasing a surface of the metal laminate;
• an electrolytic oxidation step of electrolytically oxidizing the metal laminate in a solution for electrolytic oxidation to form a first porous oxide film having a roughened structure on a surface of the aluminum;
• an electroless oxidation step of performing electroless oxidation for the metal laminate in a solution for electroless oxidation to form a second porous oxide film having a roughened structure on a surface of the copper;
• and
• a bonding step of bonding the metal laminate with the polymer resin,
• wherein the solution for electrolytic oxidation is an acidic solution prepared by mixing two or more acids selected from oxalic acid (C2H2O4), phosphoric acid (H3PO4), chromic acid (H2CrO4), citric acid (CH8O7) and sulfuric acid (H2SO4) with water, and
• the solution for electroless oxidation is a mixed solution prepared by dissolving two or more substances selected from sodium sulfate, sodium hydroxide, sodium chlorate, sodium chlorite and sodium phosphate in water.