Preparation method of anti-atomization micrometer and nanometer composite structure copper-based super-hydrophobic surface

Abstract

The invention relates to a preparation method of an anti-atomization micrometer and nanometer composite structure copper-based super-hydrophobic surface. The preparation method comprises the following steps that firstly, abrasive paper is used for carrying out polishing, and an ordered micrometer-level coarse structure is established on a metal copper base; then, a high-level ordered nanorod cone array structure is prepared on the surface of the micrometer-level coarse structure, and therefore a micrometer and nanometer graded composite structure is established on the surface of the copper base; and finally, fluoroalkyl silane is used for carrying out high-temperature vacuum fluoridation on the copper base with the micrometer and nanometer composite structure, and the anti-atomization micrometer and nanometer composite structure copper-based super-hydrophobic surface is prepared. According to the copper-based super-hydrophobic surface prepared through the method, the water static contact angle is about 165 degrees, the roll angle is about 1.0 degree, and the copper-based hydrophobic surface has excellent macroscopic hydrophobic performance; the hydrophobic surface is used for carrying out condensation assessment under a low-temperature and high-humidity environment, Cassie state contact of cold condensation drops can still be kept under the atomization condition, and an obvious anti-atomization effect is achieved.

Description

technical field [0001] The invention belongs to the technical field of chemical functional materials, and relates to a method for preparing a copper-based super-hydrophobic surface with a micro-nano composite structure, in particular to a method for preparing a copper-based super-hydrophobic surface with an anti-fog micro-nano composite structure. Background technique [0002] Copper and its alloys are widely used in the national economy due to their excellent performance. For example, most of the condensers, low-pressure heaters, heat exchange devices in oil coolers, and air-core wires of water-cooled generators use copper or copper alloys; in addition, in maritime military engineering, ship water piping systems use more There are also some copper and copper alloys. However, most of these copper-based materials / copper parts need to be exposed to a humid environment during use. Due to the high surface energy of copper, water molecules are easy to adsorb and gather, which ca...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a method for preparing a copper-based superhydrophobic surface with an anti-fog micro-nano composite structure that is environmentally friendly, simple in processing procedures, mild in conditions, easy to operate, low in cost, and good in stability, so as to solve the problems in the prior art. The existing copper-based superhydrophobic surface technology has technical problems such as complex processing procedures, high cost, poor stability, and failure of superhydrophobic properties under water vapor condensation conditions.

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