Superhydrophobic Film make up of Corrosion Aluminum Plates and Polypropylene Coated

Polypropylene (PP) film was used as coating to improve the hydrophobicity of corrosive aluminum surface. A micro-porous film with compound nano-particles was obtained on the aluminum alloy substrate using the corrosion method and coated PP. The water contact angle (WCA) of superhydrophobic surface is 157 degrees. The superhydrophobic property is attributed to this special surface morphology and low surface energy PP. Aggregated nano-particles would help to increase the surface hydrophobicity.