| 摘要 |
Provided is a coated aluminum material for capacitor cases which has satisfactory formability that enables the material to be formed into a capacitor case, and which, after being formed into a capacitor case, is excellent in terms of insulating property, resistance to high-temperature water, secondary adhesion, detergent resistance, corrosion resistance, blocking resistance, and printability. This coated aluminum material is excellent also from the standpoints of cost and of safety and environment. The coated aluminum material for capacitor cases comprises an aluminum base, a chemical conversion film formed on at least one surface of the aluminum base, and a coating film formed on the chemical conversion film, wherein the coating film comprises a bisphenol A epoxy resin as a major component and has a degree of swelling with methyl ethyl ketone of less than 1.5, a surface free energy of 36-50 mN/m, and a glass transition temperature of 50-100°C. |
