Ultra-hydrophobic high sticking composite metal oxide thin film and preparing method thereof
A technology of oxide film and composite metal, which is applied in the direction of metal material coating process, coating, superimposed layer plating, etc., can solve the problems of inconvenient and widely popularized application, application limitation, complicated process, etc., and achieve excellent superhydrophobic high Adhesive performance, low cost, and easy-to-obtain raw materials
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Embodiment 1
[0031] The aluminum sheet with a purity of 99.5% and a thickness of 0.1mm is first cleaned with absolute ethanol to remove surface oil stains, then cleaned with deionized water, and then soaked in a 5% sodium hydroxide solution to remove the natural oxide layer on the surface , and finally rinsed with deionized water. The pretreated aluminum sheet was used as the anode, the lead plate was used as the cathode, the sulfuric acid solution of 1.0 mol / L was used as the electrolyte, the oxidation current was 2A, and the reaction time was 1 hour to obtain an anodized aluminum sheet for use.
[0032] In a 1000mL reaction vessel, 0.05mol Ni(NO 3 ) 2 ·6H 2 O and 0.30mol NH 4 NO 3 Dissolve in 500mL deionized water, and adjust the pH of the solution to 6.5 with dilute ammonia water.
[0033] Suspend the anodized aluminum substrate vertically in the above reaction solution, and react at a constant temperature of 75°C for 36 hours. After the reaction, take out the aluminum substrate, r...
Embodiment 2
[0038] Aluminum sheet is processed with embodiment 1.
[0039] In a 1000mL reaction vessel, 0.06mol Ni(NO 3 ) 2 ·6H 2 O and 0.18mol NH 4 NO 3 Dissolve in 600mL deionized water, and adjust the pH of the solution to 6.0 with dilute ammonia water.
[0040] Suspend the anodized aluminum substrate vertically in the above reaction solution, and react at a constant temperature of 60°C for 28 hours. After the reaction, take out the aluminum substrate, rinse it with deionized water repeatedly, and dry it at room temperature to obtain NiAl-LDHs film.
[0041] The NiAl-LDHs film prepared above was calcined in a muffle furnace at a heating rate of 0.5 °C / min at 400 °C for 2.5 hours to convert it into a NiAl-LDO composite metal oxide film.
[0042] The prepared NiAl-LDO film was vertically suspended in 0.1mol / L potassium laurate (C 12 h 23 o 2 K) In the aqueous solution, take out the film after constant temperature reaction at 30°C for 10 hours, rinse with ethanol, wash with deion...
Embodiment 3
[0044] In this embodiment, an aluminum sheet with a purity of 80% and a thickness of 0.1 mm is used, and the processing steps are the same as in Embodiment 1.
[0045] In a 1000mL reaction vessel, 0.12mol Ni(NO 3 ) 2 ·6H 2 O and 0.72mol NH 4 NO 3 Dissolve in 600mL deionized water, and adjust the pH of the solution to 5.8 with dilute ammonia water.
[0046] Suspend the anodized aluminum substrate vertically in the above reaction solution, and react at a constant temperature of 75°C for 36 hours. After the reaction, take out the aluminum substrate, rinse it with deionized water repeatedly, and dry it at room temperature to obtain NiAl-LDHs film.
[0047] The three NiAl-LDHs films prepared above were calcined in a muffle furnace at a heating rate of 1°C / min at 400°C, 500°C, and 600°C for 4 hours to convert them into NiAl-LDO composite metal oxides film. The SEM photos of NiAl-LDO composite metal oxide thin films prepared under the above different calcination temperatures a...
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