Replacement reaction method for preparation of silver dendritic super-hydrophobic surface

A super-hydrophobic surface and displacement reaction technology, applied in liquid chemical plating, metal material coating process, coating, etc., can solve problems that hinder large-scale application, complex process control, harsh preparation conditions, etc., and achieve super-hydrophobic performance The effect of maintaining stability, widening the concentration range, and shortening the preparation time

Inactive Publication Date: 2016-06-15
XIAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods still have some disadvantages, such as expensive materials, complicated process control, and the need to use templating agents, which seriously hinder their large-scale application in engineering.
[0004] In recent years, the superhydrophobic surface of the dendritic structure has attracted much attention in the field of superphobicity. Although the related literature on the metal dendritic structure in the superphobic field has gradually increased, there are successful cases in which researchers have applied the dendritic structure

Method used

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  • Replacement reaction method for preparation of silver dendritic super-hydrophobic surface
  • Replacement reaction method for preparation of silver dendritic super-hydrophobic surface

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Step 1. Dissolve 0.05 g of silver nitrate crystals in distilled water, set the volume to 100 mL, and stir evenly to obtain solution A with a silver nitrate concentration of 0.003 mol / L;

[0026] Step 2. Dissolve 2.28 g of myristic acid in absolute ethanol, set the volume to 100 mL, and stir evenly to obtain a solution B with a concentration of myristic acid of 0.1 mol / L;

[0027] Step 3: Polish the copper substrate with a size of 50mm×25mm×1.5mm with water sandpaper to remove the oxide layer on the surface of the copper substrate, then rinse the polished copper substrate with distilled water and absolute ethanol in turn, and dry it for use;

[0028] Step 4, put the dried copper matrix in step 3 into the solution A described in step 1 to cause a displacement reaction, the time is 50s;

[0029] Step 5. Rinse and dry the copper substrate obtained in step 4 with distilled water and absolute ethanol successively, then apply solution B evenly on the surface of the rinsed and ...

Embodiment 2

[0032] Step 1. Dissolve 0.5 g of silver nitrate crystals in distilled water, set the volume to 100 mL, and stir evenly to obtain solution A with a silver nitrate concentration of 0.0294 mol / L;

[0033] Step 2. Dissolve 1.14 g of myristic acid in absolute ethanol, set the volume to 100 mL, and stir evenly to obtain a solution B with a concentration of myristic acid of 0.05 mol / L;

[0034] Step 3: Polish the copper substrate with a size of 50mm×25mm×1.5mm with water sandpaper to remove the oxide layer on the surface of the copper substrate, then rinse the polished copper substrate with distilled water and absolute ethanol in turn, and dry it for use;

[0035] Step 4, put the dried copper matrix in step 3 into the solution A described in step 1 to cause a displacement reaction, the time is 30s;

[0036] Step 5. Rinse the copper substrate obtained in step 4 with distilled water and absolute ethanol successively, then apply the solution B described in step 2 evenly on the surface o...

Embodiment 3

[0038] Step 1. Dissolve 0.85 g of silver nitrate crystals in distilled water, set the volume to 100 mL, and stir evenly to obtain a solution A with a silver nitrate concentration of 0.050 mol / L;

[0039] Step 2. Dissolve 2.28 g of myristic acid in absolute ethanol, set the volume to 100 mL, and stir evenly to obtain a solution B with a concentration of myristic acid of 0.10 mol / L;

[0040] Step 3: Polish the copper substrate with a size of 50mm×25mm×1.5mm with water sandpaper, 以 Remove the oxide layer on the surface of the copper substrate, then rinse the polished copper substrate with distilled water and absolute ethanol in turn, and dry it for use;

[0041] Step 4, put the dried copper substrate in step 3 into the solution A described in step 1 to cause a displacement reaction, the time is 5s;

[0042] Step 5. Rinse the copper substrate obtained in step 4 with distilled water and absolute ethanol successively, then apply the solution B in step 2 evenly on the surface of the...

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Abstract

The invention discloses a replacement reaction method for preparation of a silver dendritic super-hydrophobic surface. The method comprises the steps that 1, silver nitrate crystals are dissolved in distilled water and stirred to be even so as to obtain a solution A; 2, tetradecanoic acid is dissolved in absolute ethyl alcohol to obtain a solution B; 3, an oxide layer on the surface of a copper matrix is removed and then washed out sequentially through distilled water and absolute ethyl alcohol, and the copper matrix is dried for standby application; 4, the copper matrix is immersed in the solution A to be subjected to replacement reaction; and 5, the copper matrix obtained in the step 4 is washed out sequentially through distilled water and absolute ethyl alcohol, then the solution B is evenly smeared on the surface of the washed copper matrix, the surface of the copper matrix is aired and slightly wiped with a sponge, and then the silver dendritic super-hydrophobic surface is obtained. By the adoption of the method, the contact angle of the prepared super-hydrophobic surface on the copper matrix can reach more than 156 degrees, and the super-hydrophobic property keeps stable after the super-hydrophobic surface is put under the normal condition for one year.

Description

technical field [0001] The invention belongs to the technical field of preparation of hydrophobic surface materials, and in particular relates to a displacement reaction method for preparing superhydrophobic surfaces of silver dendrites. Background technique [0002] Many animals and plants in nano nature have super-hydrophobic properties, such as lotus leaves, taro leaves and other surfaces with super-hydrophobic self-cleaning properties. Inspired by this, researchers have carried out research on superhydrophobic properties, and this direction has developed into a research hotspot in surface science. Superphobic surfaces usually use a combination of low surface energy and micro-nano structures to achieve superphobic properties. Superhydrophobic materials are widely used in daily life, industrial production, and national defense. Building superhydrophobic films on metal surfaces can enhance the corrosion resistance of metals. [0003] With the in-depth study of superhydrop...

Claims

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Application Information

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IPC IPC(8): C23C18/16
CPCC23C18/16
Inventor 郝丽梅闫小乐庞绍芳解忧左瑜杰
Owner XIAN UNIV OF SCI & TECH
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