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A kind of preparation of superhydrophobic nanometer Ni on the surface of nickel mesh 3 s 2 method of coating

A super-hydrophobic, nickel mesh technology, applied in the direction of metal material coating process, can solve the problems of strong dependence on production equipment, long production cycle, and limit the popularization and application of solvothermal reaction method, to increase the popularization and application, good protection Effects with low dependence on action,

Inactive Publication Date: 2020-12-15
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The solvothermal reaction method is simple to operate, and the Ni grown in situ under high temperature and high pressure environment 3 S 2 The micro-nano structure has a strong bonding force with the matrix, but the solvothermal reaction method requires a special sealed reaction vessel, which makes it more dependent on the production equipment, and the production cycle of this method is long, which greatly limits the solvothermal reaction. promotion and application of the law

Method used

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  • A kind of preparation of superhydrophobic nanometer Ni on the surface of nickel mesh <sub>3</sub> s <sub>2</sub> method of coating
  • A kind of preparation of superhydrophobic nanometer Ni on the surface of nickel mesh <sub>3</sub> s <sub>2</sub> method of coating

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0024] (1) Cut a nickel mesh (purity ≥ 99.5%) with an opening size of 75 μm × 75 μm into a sample size of 25 mm × 25 mm, soak it in 100 mL of hydrochloric acid solution with a concentration of 0.5 mol / L for 10 min to remove surface oxides After taking it out, rinse it with deionized water and dry it quickly; then ultrasonically clean the sample in 100mL deionized water and 100mL absolute ethanol for 10min to remove impurities and oil on the surface, and dry it for later use;

[0025] (2) 0.025mol sodium hydroxide and 0.013mol ammonium persulfate are dissolved in a beaker with 100mL deionized water, fully stirred to make the solution mix uniformly; the nickel mesh processed through step (1) is soaked in the solution, Then heat in a water bath at 50°C for 10 minutes, take out the sample, rinse it with deionized water, and dry it quickly;

[0026] (3) Dissolve 0.002mol of sodium sulfate nonahydrate and 0.014mol of ammonium fluoride in 100mL of deionized water, and after mixing ev...

specific Embodiment 2

[0030] (1) Cut the nickel mesh into a sample with a size of 25mm×25mm, soak it in 0.5mol / L hydrochloric acid solution for 10min to remove surface oxidized substances, rinse it with deionized water after taking it out, and dry it quickly; then put the sample in the Ultrasonic cleaning in deionized water and absolute ethanol for 10 minutes to remove impurities and oil on the surface, and dry for later use;

[0031] (2) 0.03mol sodium hydroxide and 0.02mol ammonium persulfate are dissolved in a beaker with 100mL deionized water, fully stirred to make the solution mix uniformly; the nickel mesh processed through step (1) is soaked in the solution, Then heat in a water bath at 60°C for 20 minutes, take out the sample, rinse it with deionized water, and dry it quickly;

[0032] (3) Dissolve 0.001mol sodium sulfate nonahydrate and 0.010mol ammonium fluoride in an appropriate amount of deionized water, and after mixing evenly, heat the solution in a water bath to 70°C, and soak the sa...

specific Embodiment 3

[0036] (1) Cut the nickel mesh into a sample with a size of 25mm×25mm, soak it in 1mol / L hydrochloric acid solution for 10min to remove surface oxidized substances, rinse it with deionized water after taking it out, and dry it quickly; Ultrasonic cleaning in ionized water and absolute ethanol for 10 minutes to remove impurities and oil on the surface, and dry for later use;

[0037] (2) 0.04mol sodium hydroxide and 0.025mol ammonium persulfate are dissolved in a beaker with 100mL deionized water, fully stirred to make the solution mix uniformly; the nickel mesh processed through step (1) is soaked in the solution, Then heat in a water bath at 40°C for 30 minutes, take out the sample, rinse it with deionized water, and dry it quickly;

[0038] (3) Dissolve 0.003mol of sodium sulfate nonahydrate and 0.020mol of ammonium fluoride in an appropriate amount of deionized water, and after mixing evenly, heat the solution in a water bath to 85°C, and soak the sample obtained in step (2...

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Abstract

The invention relates to a method for preparing a super-hydrophobic nano Ni3S2 coating on the surface of a nickel mesh. The method comprises the following steps taht firstly, pretreating the surface of the nickel mesh to remove oil stains and impurities attached to the surface of the nickel mesh; dissolving a proper amount of sodium hydroxide and ammonium persulfate into deionized water, fully stirring and uniformly mixing, soaking the nickel mesh in the solution and heating in a water bath at the temperature of 35-65 DEG c, so that an oxidation layer is formed on the surface of the nickel net, taking out the sample, washing with deionized water and rapidly drying; then preparing a water solution with a certain concentration of sodium sulfate decahydrate and ammonium fluoride, fully stirring and heating to 60-90 DEG c, soaking the nickel mesh subjected to the treatment in the solution, and keeping the temperature for a certain time to obtain a Ni3S2 coating with a nano-protrusion structure; finally, the super-hydrophobic nano Ni3S2 coating is obtained on the surface of the nickel net through tetradecanoic acid modification, the contact angle between the coating and the deionized water is between 151-159 degrees, the rolling angle ranges from 5 degrees to 10 degrees. The method is simple to operate and low in cost, and is easy to realize industrial production.

Description

technical field [0001] The invention relates to the field of surface modification of metal materials, in particular to a method for preparing superhydrophobic nano-Ni on the surface of nickel mesh. 3 S 2 The coating method, through oxidation treatment, vulcanization treatment and low-energy modification on the surface of nickel mesh, makes the surface of nickel mesh obtain super-hydrophobic function, which has broad application prospects in wastewater treatment, oil-water separation and other fields. Background technique [0002] Wettability is an important property of the surface of solid materials. Generally, the surface with a static water contact angle greater than 150° and a rolling angle less than 10° is called a superhydrophobic surface. The superhydrophobic surface has excellent properties such as self-cleaning, corrosion resistance and anti-icing. performance has received extensive attention. In addition to the "lotus leaf effect", there are many plants and animal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C22/60C23C22/68
CPCC23C22/60C23C22/68
Inventor 于思荣尹晓丽吕哲馨臧洁赵严刘恩洋
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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