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A kind of preparation method of superhydrophobic-superoleophobic material

A superoleophobic and superhydrophobic technology, which is applied in the field of new material preparation, can solve the problems of not meeting the needs of industrial development, not having superoleophobic properties, and losing excellent properties of materials, achieving short time consumption, simple preparation method, Stable performance

Inactive Publication Date: 2019-05-07
SICHUAN AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the deepening of research, people have found that ordinary superhydrophobic surfaces have some weaknesses, such as: materials that only have superhydrophobic properties but not superoleophobic properties, when faced with oily wastewater, they are easily polluted by oil and lose superhydrophobicity. performance, so that the material quickly loses its original excellent performance
Therefore, the prepared materials with only superhydrophobic properties can no longer meet the needs of industrial development, and it has become a research trend to prepare a material with dual properties of superhydrophobic and superoleophobic

Method used

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  • A kind of preparation method of superhydrophobic-superoleophobic material
  • A kind of preparation method of superhydrophobic-superoleophobic material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A. Substrate pretreatment: Cut the copper sheet and aluminum sheet into 5cm × 3.5cm × 0.1cm size, and ultrasonically clean them in acetone, ethanol and deionized water for 15 minutes respectively to remove surface oil. Then the metal sheet was polished and polished with 300-mesh, 600-mesh and 1200-mesh sandpaper respectively, and then chemically polished in 2mol / L sodium hydroxide for 5 minutes, rinsed with deionized water, and dried for later use;

[0029] B. Electrolyte preparation: In 100ml deionized solution, add 0.1M nickel sulfate hexahydrate, 0.0625M copper sulfate pentahydrate, 0.10M sodium sulfate, 0.025M sodium hypophosphite, 0.05M citric acid, 0.012g ten Dialkyl sodium sulfate agent, 25wt% ammonia water will adjust the pH value of the solution to 5.5.

[0030] C. Preparation of coating: use copper sheet as anode, metal sheet as cathode, add electrolyte for electroplating; current density is controlled at 0.06A / cm 2 , the electrodeposition time is 10 minutes,...

Embodiment 2

[0033] A. Substrate pretreatment: Cut the copper sheet and stainless steel sheet into 5.2cm × 3.5cm × 0.1cm size, and ultrasonically clean them in acetone, ethanol and deionized water for 15 minutes respectively to remove surface oil. Then the metal sheet was polished and polished with 300-mesh, 600-mesh and 1200-mesh sandpaper respectively, and then chemically polished in 8mol / L hydrochloric acid for 2 minutes, rinsed with deionized water, and dried for later use;

[0034] B. Electrolyte preparation: In 100ml deionized solution, add 0.15M nickel chloride, 0.05M copper chloride, 0.06M sodium chloride, 0.05M sodium hypophosphite, 0.01M citric acid, 0.015g dodecane The pH value of the solution was adjusted to 5 with sodium alkyl sulfate and 0.1M sodium hydroxide.

[0035] C. Preparation of coating: use copper sheet as anode, metal sheet as cathode, add electrolyte for electroplating; current density is controlled at 0.03A / cm 2 , the electrodeposition time is 30 minutes, and the...

Embodiment 3

[0038] A. Substrate pretreatment: Cut the copper sheet and titanium into 5.2cm × 3.5cm × 0.1cm size, and ultrasonically clean them in acetone, ethanol and deionized water for 15 minutes respectively to remove surface oil. Then the metal sheet was polished and polished with 300 mesh, 600 mesh and 1200 mesh sandpaper respectively, and then chemically polished in 2mol / L hydrofluoric acid for 5 minutes, rinsed with deionized water, and dried for later use;

[0039] B. Electrolyte preparation: In 100ml deionized solution, add 0.05M nickel sulfate hexahydrate, 0.15M copper sulfate pentahydrate, 0.12M sodium sulfate, 0.01M sodium hypophosphite, 0.1M citric acid, 0.005g ten Sodium dialkylbenzene sulfonate and 25% ammonia water adjust the pH value of the solution to 6.

[0040] C. Preparation of coating: use copper sheet as anode, metal sheet as cathode, add electrolyte for electroplating; current density is controlled at 0.1A / cm 2 , the electrodeposition time is 3 minutes, and the ca...

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Abstract

The invention relates to the technical field of new material preparation, in particular to a preparation method of a super-hydrophobic and super-oleophobic material. The preparation method comprises the following steps: by taking a pretreated copper sheet as an anode, a pretreated thin metal sheet as a cathode, and an aqueous solution containing nickel ions and copper ions as an electrolytic solution, electro-deposition is carried out at constant current, and then a cathode thin metal sheet substrate is taken out, cleaned and dried, and then is soaked in a long-chain-alkyl siloxane alcohol solution for a period of time, thereby obtaining the material having super-hydrophobic and super-oleophobic properties. The preparation method is simple, the consumed time is short, the super-hydrophobic and super-oleophobic properties of the material are stable and lasting, and the material has high economic value.

Description

technical field [0001] The invention relates to the technical field of preparation of new materials, in particular to a method for preparing a superhydrophobic-superoleophobic material. Background technique [0002] The "lotus leaf effect" in nature has triggered people's research on super-hydrophobic surfaces. During the research process, it was found that the surface of super-hydrophobic materials has the characteristics of self-cleaning, anti-icing and frosting, corrosion resistance, drag reduction, and high bearing capacity. It has broad application prospects in military, communication, energy, environment and other fields. However, with the deepening of research, people have found that ordinary superhydrophobic surfaces have some weaknesses, such as: materials that only have superhydrophobic properties but not superoleophobic properties, when faced with oily wastewater, they are easily polluted by oil and lose superhydrophobicity. Performance, so that the material quic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D3/56C25D5/48
CPCC25D3/56C25D5/48
Inventor 张延宗向美苏罗方王博刘燕何燕沈飞杨刚张小洪邓仕槐
Owner SICHUAN AGRI UNIV