A method for preparing superhydrophobic coatings on steel substrates by Fe-based nanocomposite brush plating

Abstract

The invention relates to a method for preparing a super-hydrophobic coating on a steel base by Fe-based nanocomposite brush plating, which belongs to the method for preparing a super-hydrophobic coating on a steel base. Nano-composite brush iron plating process to prepare super-hydrophobic coating on the surface of steel substrate, using nano-composite brush iron plating process and coating blackening treatment, to prepare super-hydrophobic coating with contact angle greater than 150° and rolling angle less than 3° on the surface of steel substrate , consists of the following steps: (1) preparatory work; (2) the process flow of preparing micro-nano rough structure on the steel surface by nano-composite brush iron plating; Al 2 o 3 Composite coating → lye soaking, rinse with water after each step of the process to prevent the plating solution from polluting the next process; blacken the coating; (4) modify the rough surface with low surface energy substances. Advantages: Brush iron plating on the hard metal surface and then blacken it to construct a super-hydrophobic surface, which has the advantages of light equipment, simple process, low cost, and strong bonding force of the coating.

Description

technical field [0001] The invention relates to a method for preparing a super-hydrophobic coating on a steel base, in particular to a method for preparing a super-hydrophobic coating on a steel base by Fe-based nanocomposite brush plating. Background technique [0002] Superhydrophobic surfaces have attracted extensive attention and in-depth research because of their large contact angles and extremely small rolling angles. Through a large number of experiments, researchers have found that super-hydrophobic surfaces have excellent properties such as self-cleaning, anti-fog, anti-freeze, and anti-corrosion, which provides broad prospects for the application of super-hydrophobic surfaces in production and life. The preparation of the superhydrophobic surface is mainly to construct the micro-nano composite protrusion classification characteristics. There are two main methods for the preparation of the superhydrophobic surface: one is to directly prepare the micro-nano rough str...

AI Technical Summary

Problems solved by technology

[0003] Most of the currently prepared superhydrophobic surfaces are constructed on soft substrate materials, and have poor stability, high cost, complicated preparation process, and high cost, which cannot be applied in large-scale industrial production.

The methods commonly used in laboratory research to prepare superhydrophobic include stencil printing, stencil extrusion, steam-induced separation, etching, deposition, etc. Due to the complexity of the process, none of them can be applied to industrial production on a large scale.