Surface capable of adjusting and controlling rebound time of liquid drops and preparation method of surface

Abstract

The invention discloses a surface capable of adjusting and controlling rebound time of liquid drops and a preparation method of the surface. The method comprises the following steps: a primary microstructure surface is prepared from a silicone material on a substrate; titanium dioxide powder is mixed with anhydrous ethanol, a titanium dioxide suspension is prepared ultrasonically, octadecyltrimethoxysilane is added, ultrasonic treatment is performed continuously for uniform mixing, and a superhydrophobic titanium dioxide spin coating liquid is obtained after reaction; the primary microstructure is adhered to a sucker opening of a spinner for spinning, and a microstructure culture dish is taken out with tweezers after spinning for solidification; the substrate is dried by a blast drying oven; a superhydrophobic secondary microstructure film meeting requirements is prepared; the edge of the film is fixed by a clamp with the middle in a suspended state, and clamping force of the clamp isadjusted. The edge of the superhydrophobic film is fixed to form a trampoline structure without bottom support, the effect of elastic force of the film on liquid drops is increased in a flexible structure manner, and the effect of prompting the liquid drops to rebound faster and more completely is achieved.

Description

technical field [0001] The invention relates to the technical field of substrate surface treatment, in particular to a surface capable of regulating droplet rebound time and a preparation method thereof. Background technique [0002] The dynamic behavior of droplets on the surface of materials can often be seen in daily life, such as splashing water droplets, grass leaves watered by rain, various liquid sprays, etc. Usually, researchers use the special texture and chemical properties of the surface of the material to make it superhydrophobic. However, the research is often based on rigid materials or placing the material surface on a rigid support plane. In nature, there are actually many surfaces that are soft and unbound, the most typical of which is the surface of the lotus leaf, which is not a rigid super-hydrophobic surface, and most of the leaves are suspended unsupported structures. The central part is supported by a rhizome. Some researchers have conducted contrast...

AI Technical Summary

Problems solved by technology

The same situation also occurs on the surface of many plant leaves, but only a few works have explored the dynamic wetting of droplets on flexible superhydrophobic surfaces, and previous studies are basically limited to how to shorten the rebound of droplet bouncing. In terms of time, but there is not much depth on whether to realize the controllability of the droplet rebound time

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