A kind of preparation method of superhydrophobic film on the surface of metal material

Abstract

The invention relates to a preparation method of a metal material surface super-hydrophobic film, and belongs to the technical field of metal material surface super-hydrophobic treatment. The method includes the steps that a metallic matrix is pretreated, and oil contamination and oxide on the surface of the metallic matrix are removed; the metallic matrix obtained after impurity removal serves as a negative electrode, a noble electrode material, a pure Ni electrode or a slicker solder alloy electrode serves as a positive electrode, the distance of the electrodes is 0.5 cm to 2 cm, the electrodes are placed into electroplate liquid to be electroplated, a direct current power source is adopted for electroplating, the electric current density is controlled to range from 50 A / dm<2> to 70 A / dm<2>, washing and blowing are carried out, and the electroplated metallic matrix is obtained; and the electroplated metallic matrix is soaked into an ethanol solution of long-chain fatty acid for 2 min or above, modification and drying are carried out, the metal material surface super-hydrophobic film is obtained, the morphology of the film is even and irregular, the roughness value is 1.732 micrometers to 2.036 micrometers, and the dewatering angle reaches 150 degrees or above. The super-hydrophobic film has the anti-sticky, self-cleaning and antiseptic performance and other performances, and is widely applied to life and industries.

Description

Technical field [0001] The invention belongs to the technical field of metal surface treatment, in particular to a hydrophobization treatment technology on the surface of a metal material, and in particular to a method for preparing a superhydrophobic film on the surface of a metal material. Background technique [0002] As an important engineering structural material, metal has played an important and irreplaceable role in the history of human social development with its unique performance advantages. Multifunctional and intelligent metal surfaces can greatly expand the actual and potential application value of metal materials. [0003] The metal surface has high surface free energy and is a typical inherently hydrophilic material. Almost all liquids can easily spread on and wet the metal surface. The wettability of a solid surface depends on its chemical composition (or surface free energy) and geometric fine structure (or surface roughness). Generally speaking, superhydrophob...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the preparation is complicated and unstable

[0009] (5) Ultraviolet light curing method is a technology for photocuring perfluoropolyether with solvent-resistant microfluidic devices. The method is simple and feasible but has poor durability

[0010] (6) The organic polymer phase separation method is to reduce the solubility of the polymer and precipitate it under the action of an external force, so that the phase is separated and a non-uniform or uniform film is formed. The cost of raw materials used in this method is high, the process is relatively complicated, and the preparation is time-consuming. longer

At present, the research process of superhydrophobicity in metal anticorrosion is complicated, the cost is high, and the research is not systematic enough, so it is difficult to apply it to the actual industry.

Images