Surface capable of adjusting and controlling rebound time of liquid drops and preparation method of surface
A rebound time and droplet technology, applied in the direction of coating, etc., can solve the problem that the droplet rebound time can not be adjusted too deeply, so as to achieve complete rebound, adjust the rebound time, and shorten the rebound time Effect
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[0030] A surface preparation method capable of regulating droplet rebound time described in this embodiment comprises the following steps:
[0031] In the first step, the polydimethylsiloxane (PDMS) prepolymer and the crosslinking agent are mixed according to the mass ratio of 10:1. After being stirred evenly, put it in a vacuum oven for 20 minutes. Then, the treated PDMS was poured on a copper sheet (made by laser drilling) with a tapered hole array after hydrophobic treatment with octadecyltrimethoxysilane (TMOS). After pouring the PDMS evenly and reaching a certain thickness, put it back into the vacuum drying oven for 15 minutes of vacuum treatment. Then it was placed in a blast drying oven and treated at 90°C for 120min. After the PDMS is solidified, the PDMS is peeled off from the template along the same direction, and then placed on a glass slide for subsequent processing.
[0032] In the second step, disperse 0.5g of titanium dioxide powder with a particle size of a...
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