Method for preparing superhydrophobic oil-water separation mesh membrane in one step
An off-grid, super-thin technology, applied in separation methods, liquid separation, chemical instruments and methods, etc., can solve the problems of copper mesh surface roughness, expensive fluorine-containing reagents, complex preparation process, etc., and achieve chemical resistance and mechanical Good performance, easy cleaning and storage, and simplified preparation process
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[0020] Example 1:
[0021] (1) The 400 mesh copper mesh was ultrasonically cleaned with acetone, ethanol and deionized water for 15 minutes to remove the surface oil, and then the copper mesh was placed in a 6mol / L HCl solution for ultrasonic cleaning for 10 minutes, washed with deionized water, and dried spare;
[0022] (2) Add 0.57g of stearic acid to 100mL of absolute ethanol, dissolve it, put it into the copper mesh treated in step (1), and react at room temperature for 48 hours; take out the omentum, rinse the residual solution on the surface with absolute ethanol, and naturally Drying to obtain the superhydrophobic oil-water separation omentum.
[0023] The scanning electron micrograph of the surface morphology of the superhydrophobic oil-water separation omentum prepared in this example is as follows: figure 1 Shown
[0024] In the air, the contact angle of the superhydrophobic oil-water separation omentum prepared in this example to 5μL of water droplets was 159° (e.g. figur...
Example Embodiment
[0026] Example 2:
[0027] (1) Wash the nickel foam with 0.2mm pore size separately with acetone, ethanol and deionized water for 15 minutes to remove oil on the surface. Then put the nickel foam into a 4mol / L HCl solution for ultrasonic cleaning for 15 minutes, and clean with deionized water. Dry for use;
[0028] (2) Add 0.69g of myristic acid to 60mL of absolute ethanol, dissolve it, put it into the foamed nickel treated in step (1), and react at room temperature for 24 hours; take out the omentum, rinse the residual solution on the surface with absolute ethanol, and naturally Drying to obtain the superhydrophobic oil-water separation omentum.
[0029] In the air, the contact angle of the superhydrophobic oil-water separation membrane prepared in this embodiment to 5 μL of water droplets is greater than 150°;
[0030] use image 3 The shown experimental device performs a separation experiment on the superhydrophobic oil-water separation mesh prepared in this example. Fix the oil...
Example Embodiment
[0031] Example 3:
[0032] (1) Wash the iron foam with 0.1mm pore size separately with acetone, ethanol and deionized water for 15 minutes to remove oil on the surface, and then put the iron foam in a 3mol / L HCl solution for 25 minutes and wash with deionized water. Dry for use;
[0033] (2) Add 1.28g palmitic acid to 50mL absolute ethanol, dissolve it, put it into the foamed iron treated in step (1), and react for 12h at room temperature; take out the omentum and rinse the residual solution on the surface with absolute ethanol. Drying to obtain the superhydrophobic oil-water separation omentum.
[0034] In the air, the contact angle of the superhydrophobic oil-water separation membrane prepared in this embodiment to 5 μL of water droplets is greater than 150°;
[0035] use image 3 The shown experimental device performs a separation experiment on the superhydrophobic oil-water separation mesh prepared in this example. Fix the oil-water separation membrane obtained above in the dev...
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