| 摘要 |
PURPOSE:To obtain the material of fin made of aluminum, which is provided with excellent hydrophilic property, anticorrosion property, resistance to degreasing and molding property while showing little abrasion of a mold or cracking upon molding, by a method wherein a hydrophilic organic film of polyacrylic ester series or polymethacrylic ester series is formed on the surface of the fin made of aluminum or aluminum alloy. CONSTITUTION:The vinyl series polymer of organic high molecular resin of polyacrylamide series or polymethacrylamide series, having water-solubility and water-dispersibility, is employed. The material of fin for heat exchanger, which is prominent in hydrophilic property, anticorrosion property and molding property, is obtained by forming the hydrophilic organic film of polyacrylamide series on the surface of the fin of aluminum, therefore, sufficient anticorrosion property may be obtained, however, the anticorrosion property may be improved further by introducing crosslinking group. Said film is soft, therefore, the ductility thereof is good, crack will never be generated at a bending part upon forming the fin and the molding property of the material is excellent. |
