Electrochemical method for preparing super-hydrophobic surface on copper substrate
A superhydrophobic surface, copper matrix technology, applied in the field of electrochemistry, to achieve the effect of simple method, good hydrophobic performance and high efficiency
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[0024] Example 1
[0025] Step 1. Polish two copper substrates with a size of 50mm×25mm×1.5mm with 800 grit and 1200 grit water sandpaper in order to remove the oxide layer on the surface of the copper substrate, and then apply distilled water and anhydrous to the polished copper substrate. Rinse it with ethanol, and then dry it with a hair dryer for later use;
[0026] Step 2. Add 7g potassium hydroxide and 1.78g potassium persulfate to absolute ethanol, dilute the volume to 150mL, stir evenly to obtain a solution with a potassium hydroxide concentration of 0.83mol / L and a potassium persulfate concentration of 0.044mol / L A;
[0027] Step 3: Add 0.5 mL of fluorosilane dropwise to 30 mL of absolute ethanol, and stir until the fluorosilane is completely dissolved to obtain solution B;
[0028] Step 4. Put the solution A described in step 2 in an electrolytic cell as an electrolyte, and connect the two copper substrates dried in step 1 as anode and cathode to the positive and negative e...
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[0032] Example 2
[0033] This embodiment is the same as embodiment 1, except that the low surface energy material used is myristic acid, stearic acid or lauric acid.
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[0034] Example 3
[0035] Step 1. Polish two copper substrates with a size of 50mm×25mm×1.5mm with 800 grit and 1200 grit water sandpaper in order to remove the oxide layer on the surface of the copper substrate, and then apply distilled water and anhydrous to the polished copper substrate. Rinse it with ethanol, and then dry it with a hair dryer for later use;
[0036] Step 2. Add 6.3g potassium hydroxide and 1.78g potassium persulfate to absolute ethanol, dilute to 150mL, stir evenly to obtain potassium hydroxide concentration of 0.75mol / L, potassium persulfate concentration of 0.044mol / L Solution A;
[0037] Step 3: Add 0.5 mL of stearic acid dropwise to 30 mL of absolute ethanol, and stir until the stearic acid is completely dissolved to obtain solution B;
[0038] Step 4. Put the solution A described in step 2 in an electrolytic cell as an electrolyte, and connect the two copper substrates dried in step 1 as anode and cathode to the positive and negative electrodes of the DC pow...
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