The invention relates to the field of functional
surface preparation technology, and particularly relates to a capillary forming method for a preparing super oleophobic surface. The capillary forming method is suitable for preparation of a
polymer super oleophobic surface, particularly suitable for the preparation of the super oleophobic surface under a simple condition. A pre-prepared micro-nano structure surface is employed as a template by the method; the template is put on a smooth and flat substrate which is coated by a
liquid state polymer film; the template is separated 5-50 [mu]m from the substrate after contact with the separate speed
ranging from 0.1 [mu]m / s to 5 [mu]m / s; the
liquid state polymer is aggregated in a gap between the micro-nano structure and the substrate under the action of a capillary force; and at the time, the
liquid state polymer is cured, so that a preparation of a secondary groove structure. Equipment required by the method is simple, preparation of the super oleophobic surface can be realized under a simple condition, preparation cost is low, and batch preparation can be easily realized.