Abstract:Inspired by the lubricated surface of pitcher plant and the guiding structure of the surface of rice leaf, a lubricating coating with simple process, stable chemical properties and oriented anti-adhesion was prepared. The oriented rough structure was obtained by grinding the plastic substrates such as polypropylene (PP) with sandpaper in the same direction. In this structure, 1H, 1H, 2H, 2H-perfluorooctyl trichlorosilicon was chemically deposited after ultraviolet treatment, and then perfluoropolyether was poured into the surface micro-structure to obtain the lubricating surface. SEM, roughness tester and contact angle tester were used to analyze the coating surface. The surface grooves obtained by directional polishing provided conditions for storing lubricants. The water contact angle of PP surface with Ra≈1.891um was 135°, and the water contact angle after fluorosilane deposition was 141°. The PP lubricating coating obtained after impregnating the lubricating liquid had the contact angle of 105° and 59° for water and dodecane, respectively, the oriented title angle of water and dodecane were 2° and 4° respectively and the inclination angles of the oriented water and dodecane are 2° and 4°, respectively; compared with the untreated surface, after being immersed in honey and shower gel for 0.5 hours the adhesion amount of the lubricated PP coating reduced by 89.4% and 86.7%.