Long-acting hydrophobic-oleophobic surface treatment process

Abstract

The invention discloses a long-acting hydrophobic-oleophobic surface treatment process which comprises the following steps: 1. etching the surface of a substrate to obtain a micro-nano structure with coarse surface; 2. dipping and coating hydrophilia nano silicon dioxide sol on the surface of the etched substrate, and drying to obtain a transparent silicon dioxide film; and 3. dipping and coating perfluor acid anhydride alky triethoxy silane on the surface of a joint layer, and drying to obtain a hydrophobic-oleophobic layer. According to the long-acting hydrophobic-oleophobic surface treatment process, the hydrophobic-oleophobic layer with good compactness can be obtained, so that better hydrophobic-oleophobic performance and stronger wear resistance can be achieved by surface treatment.

Description

technical field [0001] The invention relates to the technical field of surface treatment, in particular to a long-acting hydrophobic and oleophobic surface treatment process. Background technique [0002] In the prior art, one of the preparation methods of hydrophobic and oleophobic film is to prepare by dipping and then baking. The disadvantage of this method is that the process is relatively long, it needs to consume more raw materials, and the baking temperature is relatively high. However, ordinary plastic materials cannot High temperature resistance, resulting in higher cost and affect the use. [0003] The second preparation method of the hydrophobic and oleophobic film is to use physical vapor deposition (PVD) or chemical vapor deposition (CVD). The disadvantage of preparing hydrophobic coatings by physical vapor deposition is that no chemical reaction occurs during the deposition process, so the coating has poor adhesion, poor wear resistance and short service life....

AI Technical Summary

Problems solved by technology

The disadvantage of physical vapor deposition to prepare hydrophobic coatings is that no chemical reaction occurs during the deposition process, so the coating has poor adhesion, poor wear resistance and short service life.

The chemical vapor deposition preparation reaction gas is easy to cause cracking, which affects the hydrophobic effect, and the deposition speed is slow and the cost is high

[0004] In the prior art, the hydrophobic and oleophobic layer obtained without etching treatment has disadvantages such as poor friction resistance and poor anti-corrosion effect. In view of this, the present invention proposes a long-term hydrophobic and oleophobic surface treatment process, and this case is thus produce