Preparation method of super-hydrophobic coating based on polydopamine self-assembly
A technology of super-hydrophobic coating and polydopamine, which is applied in coatings, anti-fouling/underwater coatings, anti-corrosion coatings, etc. It can solve the problems of poor oxidizing agent and hydrophobic modification effect, achieve good chemical stability and broad application prospects Effect
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Embodiment 1
[0025] The concrete steps of the preparation method of superhydrophobic coating in the present embodiment are as follows:
[0026] (1) Ultrasonic degrease the glass slides in ethanol for 30 minutes, wash them three times with deionized water, and then place them in a blast oven at 80°C for 2 hours to dry for later use.
[0027] (2) Weigh 6.057g of Tris in a beaker, add an appropriate amount of ultrapure water to dissolve it, transfer it to a 1L volumetric flask, and adjust the pH to 8.5 with hydrochloric acid to obtain Tris-hydrochloric acid buffer.
[0028] (3) Take by weighing 0.1g dopamine hydrochloride and 0.014g nanometer zero-valent iron in a 100mL beaker, add 50mL of tris-hydrochloric acid buffer solution prepared by step (2), and magnetically stir it to fully dissolve it to obtain mixture.
[0029] (4) Immerse the glass slide in the mixed solution obtained in step (3) for deposition for 4 hours, accompanied by magnetic stirring at the stirring speed of 200r·min -1 ,...
Embodiment 2
[0034] The concrete steps of the preparation method of superhydrophobic coating in the present embodiment are as follows:
[0035] (1) Ultrasonic degrease the glass slides in ethanol for 30 minutes, wash them three times with deionized water, and then place them in a blast oven at 80°C for 2 hours to dry for later use.
[0036] (2) Weigh 6.057g of Tris in a beaker, add an appropriate amount of ultrapure water to dissolve it, transfer it to a 1L volumetric flask, and adjust the pH to 8.5 with hydrochloric acid to obtain Tris-hydrochloric acid buffer.
[0037] (3) Take by weighing 0.1g dopamine hydrochloride, 0.014g nanometer zero-valent iron in a 100mL beaker, add 50mL of tris-hydrochloric acid buffer solution prepared by step (2), and magnetically stir it to fully dissolve it to obtain mixture.
[0038] (4) Immerse the glass slide in the mixed solution obtained in step (3) for deposition for 1 h, accompanied by magnetic stirring at a stirring speed of 100 r min -1 , take ou...
Embodiment 3
[0043] The concrete steps of the preparation method of superhydrophobic coating in the present embodiment are as follows:
[0044] (1) Ultrasonic degrease the glass slides in ethanol for 30 minutes, wash them three times with deionized water, and then place them in a blast oven at 80°C for 2 hours to dry for later use.
[0045] (2) Weigh 6.057g of Tris in a beaker, add an appropriate amount of ultrapure water to dissolve it, transfer it to a 1L volumetric flask, and adjust the pH to 8.5 with hydrochloric acid to obtain Tris-hydrochloric acid buffer.
[0046] (3) Take by weighing 0.1g dopamine hydrochloride, 0.014g nanometer zero-valent iron in a 100mL beaker, add 50mL of tris-hydrochloric acid buffer solution prepared by step (2), and magnetically stir it to fully dissolve it to obtain mixture.
[0047](4) Immerse the glass slide in the mixed solution obtained in step (3) for deposition for 4 hours, accompanied by magnetic stirring at the stirring speed of 180r min -1 , tak...
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