Preparing method of super-amphiphobic surface with scale preventing performance

Abstract

The invention discloses a preparing method of a super-amphiphobic surface with scale preventing performance, relates to a preparing technology of the super-amphiphobic surface, and belongs to the field of metal material surface modification. The preparing method is a method for preparing a super-amphiphobic copper-zinc alloy layer on the surface of rolled steel. According to the preparing method, rolled steel serves as a substrate, firstly, a copper-zinc alloy layer is electrically deposited on the surface of the rolled steel, then a sample with the surface covered with the copper-zinc alloy layer is immersed in a beaker containing a mixed solution of potassium hydroxide and ammonium persulfate, and the beaker is placed in a water bath at a certain temperature to be insulated for corresponding time; and then at the room temperature, the treated steel sample is immersed in a perfluoro caprylic acid absolute ethyl alcohol solution with a certain concentration for several hours, and then the treated steel sample is taken out to be aired at the room temperature so that the super-amphiphobic surface can be obtained. The contact angle between the super-amphiphobic surface obtained through the method and water and the contact angle between the super-amphiphobic surface obtained through the method and glycerin both exceed 150 degrees, and the rolling angle between the super-amphiphobic surface obtained through the method and water and the rolling angle between the super-amphiphobic surface obtained through the method and glycerin are both smaller than 5 degrees. The scaling appearance of the super-amphiphobic sample in a mixed solution composed of CaCl2 and NaHCO3 is in a needle shape and is similar to an aragonite structure, and the super-amphiphobic sample has good scale preventing performance compared with a rhomb calcite structure on the surface of a steel base body.

Description

technical field [0001] The invention belongs to the field of surface modification of metal materials, and relates to a method for preparing a super-amphiphobic surface with anti-fouling properties on a steel substrate. Background technique [0002] Due to its special wettability, superhydrophobic surface has attracted extensive attention of researchers, and has become one of the hotspots in bionic micro-nano technology. In recent years, a large number of literature and patents on superhydrophobicity have emerged, but there are relatively few literature and patents on superamphiphobia, especially the realization of superamphiphobia on the surface of steel. A superamphiphobic surface refers to a surface that is both superhydrophobic and superoleophobic, that is, the obtained surface has a contact with water and oil greater than 150°, and has a small rolling angle. The superamphiphobic surface can realize self-cleaning, thereby realizing anti-pollution and anti-corrosion capab...

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Problems solved by technology

However, it is particularly easy to be corroded in a humid en

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