A liquid-assisted forming method for preparing superoleophobic surfaces

Abstract

The invention relates to the technical field of functional surface preparation, in particular to a liquid assisted forming method for preparing a superoleophobic surface. The method is suitable for preparing a polymer superoleophobic surface, particularly for preparing the superoleophobic surface under simple and easy conditions. The method comprises the steps that assisted forming liquid is injected into a treated flat surface with preferential wettability; the liquid and the flat surface serve as a template; and the preparation of a secondary groove structure is achieved by a replica molding method. Equipment required by the liquid assisted forming method is simple, the preparation of the superoleophobic surface can be achieved under the simple and easy conditions, the preparation cost is low, and batch preparation is easy.

Description

technical field [0001] The invention relates to the technical field of functional surface preparation, in particular to a liquid-assisted forming method for preparing super-oleophobic surfaces, which is suitable for the preparation of polymer super-oleophobic surfaces, especially for the preparation of super-oleophobic surfaces under simple conditions. Background technique [0002] A superoleophobic surface refers to a surface that enables droplets with low surface tension (such as oil droplets) to present a large contact angle (>130°) on its surface. Since the oil droplets can have a larger contact angle, the surface extends the performance of the superhydrophobic surface to the oil environment, and can achieve more excellent self-cleaning and drag reduction performance. Therefore, superoleophobic surfaces have received extensive attention in recent years. [0003] Existing research (“A new type of super-oleophobic surface structure design method”, national invention pa...

AI Technical Summary

Problems solved by technology

This method can prepare superoleophobic surfaces under simple conditions, however, due to the small diameter of the filaments, the depth of the constructed secondary groove structure is limited, and this limited depth of secondary groove structure makes the surface superoleophobic Both the performance and its stability are affected, and, due to the poor regularity of the filament arrangement, the method is difficult to achieve the controllable preparation of the secondary groove structure

[0005] In short, as far as the current methods of preparing superoleophobic surfaces are concerned, the Bosch process requires expensive equipment and the preparation process is complicated, while the controllability of the secondary groove structure prepared by electrospinning is poor.

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