Electrodeposition preparation method and device for super-hydrophobic structure on inner wall of pipeline

Abstract

The invention discloses an electro-deposition preparation method and device for a super-hydrophobic structure on the inner wall of a pipeline, and relates to the field of non-traditional machining. According to the method, a hollow tubular anode is placed in the center of the interior of a to-be-machined pipeline, and a certain gap is kept; a deposition solution is slowly introduced into a tubular anode, liquid drops attached to an opening in the upper end of the hollow tubular anode are adsorbed to the inner wall of a workpiece pipeline according to the electrostatic adsorption principle, a micro-channel is formed between the tubular anode and the inner wall of the workpiece pipeline, an electro-deposition channel is formed, and therefore the super-hydrophobic micro-nano structure is obtained. After the micro-nano structure is oxidized for a period of time or is coated with a low-surface-energy substance, a super-hydrophobic surface can be obtained on the inner wall of a workpiece pipeline. The operation process is simple, the micro-nano structure is easy to control, the hydrophobicity of the inner wall of the pipeline is enhanced, and the obtained super-hydrophobic structure pipeline can achieve the effect of accelerating the flow speed in the pipeline.

Description

technical field [0001] The invention relates to the field of surface processing in special processing technology, in particular to an electrodeposition preparation method and device for a super-hydrophobic structure on the inner wall of a pipeline, which is suitable for the preparation of a super-hydrophobic structure on the inner wall of metal straight pipes with different inner diameters. Background technique [0002] Superhydrophobic surfaces have a series of advantages such as self-cleaning, low resistance, and frost resistance. The preparation of cross-scale superhydrophobic micro-nanostructures is a key part of the preparation of superhydrophobic surfaces. Due to the particularity of long and straight pipes, it is difficult to prepare superhydrophobic structures on the inner wall of the pipe. [0003] The Chinese Patent Publication No. CN111850660A discloses "a simple super-hydrophobic pipe inner surface preparation device based on electroplating method". Micro-nano st...

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Problems solved by technology

[0003] The Chinese Patent Publication No. CN111850660A discloses "a simple super-hydrophobic pipe inner surface preparation device based on electroplating method", in which micro-nano structures are electrodeposited on the inner wall of the pipe, but the growth of micro-nano structures is disordered and uncontrollable

Chinese Patent Publication No. CN109913916A discloses "a device and method for preparing a superhydrophobic structure on the inner wall of a pipeline", and an ordered micro-nano structure is prepared by inserting an optical fiber into the pipeline, but the device is relatively complicated and expensive

These methods have their own characteristics, but they all fail to meet the requirements of simple and efficient preparation of ordered micro-nano hydrophobic structures.

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