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Preparation method of flexible super-hydrophobic silica gel film

A silica gel film and super-hydrophobic technology, applied in the field of flexible super-hydrophobic silica gel film preparation, can solve the problems of stoppage and the microstructure being easily damaged by the outside world, and achieve the effects of improving the rubbing accuracy, improving the corrosion time, and stabilizing the surface wettability.

Inactive Publication Date: 2021-10-19
张雪岳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the microstructure of the material surface is easily damaged by the outside world, most of the experimental results stop in the laboratory

Method used

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  • Preparation method of flexible super-hydrophobic silica gel film
  • Preparation method of flexible super-hydrophobic silica gel film
  • Preparation method of flexible super-hydrophobic silica gel film

Examples

Experimental program
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Effect test

Embodiment 1

[0022] S1. Anneal the pure aluminum sheet in a resistance furnace at 575°C for 3 hours, take it out, air-cool to room temperature and ultrasonically clean it with deionized water for 5 minutes. Then put the evenly mixed Baker's solution into a heating agitator, place the aluminum sheet in the Baker's solution to react for a few minutes, take it out, wash it with deionized water, and dry it to obtain an aluminum template;

[0023] S2. Mix the PDMS prepolymer and the curing agent at a ratio of 10:1 and stir fully, put the beaker into a vacuum box and evacuate until all the bubbles disappear;

[0024] S3. Select sodium polystyrene sulfonate (PSSNa, Mw=7000Da) as a release agent, and dissolve a certain amount of PSSNa in a certain amount of deionized water to obtain a PSSNa solution. Then the PSSNa solution is evenly dispersed on the aluminum template after the treatment in the S1 step with a glue homogenizer at a speed of 300 rpm, and dried;

[0025] S4. Finally, pour the PDMS s...

Embodiment 2

[0027] S1. Anneal the pure aluminum sheet in a resistance furnace at 550°C for 3 hours, take it out, air-cool it to room temperature and ultrasonically clean it with deionized water for 5 minutes. Then put the evenly mixed Baker's solution into a heating agitator, place the aluminum sheet in the Baker's solution to react for a few minutes, take it out, wash it with deionized water, and dry it to obtain an aluminum template;

[0028] S2. Mix the PDMS prepolymer and the curing agent at a ratio of 10:1 and stir fully, put the beaker into a vacuum box and evacuate until all the bubbles disappear;

[0029] S3. Select sodium polystyrene sulfonate (PSSNa, Mw=7000Da) as a release agent, and dissolve a certain amount of PSSNa in a certain amount of deionized water to obtain a PSSNa solution. Then the PSSNa solution is evenly dispersed on the aluminum template after the treatment in the S1 step with a glue homogenizer at a speed of 300 rpm, and dried;

[0030] S4. Finally, pour the PDM...

Embodiment 3

[0032] S1. Anneal the pure aluminum sheet in a resistance furnace at 525°C for 3 hours, take it out, air-cool to room temperature and ultrasonically clean it with deionized water for 5 minutes. Then put the evenly mixed Baker's solution into a heating agitator, place the aluminum sheet in the Baker's solution to react for a few minutes, take it out, wash it with deionized water, and dry it to obtain an aluminum template;

[0033] S2. Mix the PDMS prepolymer and the curing agent at a ratio of 10:1 and stir fully, put the beaker into a vacuum box and evacuate until all the bubbles disappear;

[0034] S3. Select sodium polystyrene sulfonate (PSSNa, Mw=7000Da) as a release agent, and dissolve a certain amount of PSSNa in a certain amount of deionized water to obtain a PSSNa solution. Then the PSSNa solution is evenly dispersed on the aluminum template after the treatment in the S1 step with a glue homogenizer at a speed of 300 rpm, and dried;

[0035] S4. Finally, pour the PDMS s...

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Abstract

The invention discloses a preparation method of a flexible super-hydrophobic silica gel film. The preparation method comprises the following steps: annealing a pure aluminum sheet in a resistance furnace at a certain temperature for 3 hours, taking out the annealed pure aluminum sheet, air-cooling the annealed pure aluminum sheet to room temperature, and ultrasonically cleaning the annealed pure aluminum sheet with deionized water for 5 minutes; then putting a uniformly mixed Becker solution into a heating stirrer, putting the aluminum sheet into the Becker solution for a reaction for several minutes, taking out the aluminum sheet, cleaning the aluminum sheet with deionized water, and drying the aluminum sheet to obtain an aluminum template; and uniformly pouring a PDMS solution prepared in a step S2 on the aluminum template treated in the step S3, conducting curing at 60 DEG C for 4 hours, slightly lifting an edge by using a knife after the PDMS solution is completely cured, and slowly tearing off the cured PDMS solution to obtain the flexible super-hydrophobic film. A silica gel polymer has long-term stability in the application of a super-hydrophobic material, and still keeps excellent restorability after cyclic deformation due to the flexibility of the silica gel polymer, so the silica gel polymer has a wider application range compared with the prior art, and is not only limited to tensile deformation any more. The method is simple, easy to scale and suitable for different polymers.

Description

technical field [0001] The invention relates to the technical field of superhydrophobic material preparation, in particular to a method for preparing a flexible superhydrophobic silica gel film. Background technique [0002] Superhydrophobic materials have important and broad application prospects in the fields of aerospace, functional materials, wearable devices, energy conservation and environmental protection, and have been one of the frontiers and hotspots of scientific research in the past two decades. However, because the microstructure of the material surface is easily damaged by the outside world, most of the experimental results stop in the laboratory. How to improve the long-term usability of superhydrophobic surfaces has always been the focus of research work. [0003] Compared with traditional rigid superhydrophobic materials, the flexible superhydrophobic film can withstand repeated deformation and extrusion when subjected to external shocks, which greatly solv...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08L83/04
CPCC08J5/18C08J2383/04
Inventor 张雪岳
Owner 张雪岳
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