Preparation method of super-hydrophobic/super-oleophylic stainless steel mesh

A stainless steel mesh and super-hydrophobic technology, applied in separation methods, chemical instruments and methods, immiscible liquid separation, etc., can solve the problems of high processing equipment requirements, unfavorable large-scale production, complicated operation process, etc., and achieve good hydrophobic effect , The preparation method is simple and convenient, and the effect of stable separation efficiency

Inactive Publication Date: 2018-04-06
CHINA RES INST OF DAILY CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the raw materials used in these existing preparation methods are special, the requirements for processing equipment are high, and the operation process is complicated, which is not conducive to large-scale production.

Method used

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  • Preparation method of super-hydrophobic/super-oleophylic stainless steel mesh
  • Preparation method of super-hydrophobic/super-oleophylic stainless steel mesh
  • Preparation method of super-hydrophobic/super-oleophylic stainless steel mesh

Examples

Experimental program
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Effect test

Embodiment 1

[0026] (1) Dip the 200-mesh stainless steel mesh into deionized water and ultrasonically clean it for 10 minutes, then dry it;

[0027] (2) Immerse the cleaned stainless steel mesh in 1 M hydrochloric acid and corrode it for 10 minutes, take it out, clean it ultrasonically with deionized water for 10 minutes, and then dry it;

[0028] (3) Immerse the dried stainless steel mesh in 0.1 M silver nitrate solution for 1 min, take it out, clean it ultrasonically with deionized water for 10 min, and then dry it;

[0029] (4) Finally, immerse the dried stainless steel mesh in 0.1 M stearic acid for 10 minutes, take it out and ultrasonically clean it with deionized water for 10 minutes, and then dry it to obtain an oil-water separation mesh with superhydrophobic and superlipophilic functions .

[0030] The contact angle of the stainless steel mesh with water is 140°, and the contact angle with kerosene is 0. It can realize fast and efficient separation of oil-water mixture, with good ...

Embodiment 2

[0032] (1) Soak the 300-mesh stainless steel mesh in deionized water and ultrasonically clean it for 10 minutes, then dry it;

[0033] (2) Immerse the cleaned stainless steel mesh in 5 M sulfuric acid and corrode it for 60 minutes, take it out and ultrasonically clean it with deionized water for 10 minutes and then dry it;

[0034] (3) Immerse the dried stainless steel mesh in 1 M copper sulfate solution for 10 minutes, take it out, clean it ultrasonically with deionized water for 10 minutes, and then dry it;

[0035] (4) Finally, immerse the dried stainless steel mesh in 1 M palmitic acid for 60 minutes, take it out and ultrasonically clean it with deionized water for 10 minutes, and then dry it to obtain an oil-water separation mesh with superhydrophobic and superlipophilic functions.

[0036] The contact angle of the stainless steel mesh with water is 148°, and the contact angle with kerosene is 0. It can realize fast and efficient separation of oil-water mixture, with good...

Embodiment 3

[0038] (1) Immerse the 400-mesh stainless steel mesh in deionized water, ultrasonically clean it for 10 minutes, and then dry it;

[0039] (2) Immerse the cleaned stainless steel mesh in 3 M sulfuric acid and corrode it for 30 minutes, take it out and ultrasonically clean it with deionized water for 10 minutes and then dry it;

[0040] (3) Immerse the dried stainless steel mesh in 0.5 M chloroauric acid solution for 5 minutes, take it out, clean it ultrasonically with deionized water for 10 minutes, and then dry it;

[0041] (4) Finally, immerse the dried stainless steel mesh in 0.5 M hexadecanic acid to react for 30 minutes, take it out, clean it ultrasonically with deionized water for 10 minutes, and then dry it to obtain an oil-water separation mesh with superhydrophobic and superlipophilic functions membrane.

[0042] The contact angle of the stainless steel mesh with water is 145°, and the contact angle with kerosene is 0. It can realize fast and efficient separation of ...

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Abstract

The invention discloses a super-hydrophobic/super-oleophylic stainless steel mesh for oil-water separation and a preparation method thereof. The preparation method comprises the following steps: ultrasonically cleaning a stainless steel mesh with deionized water, then performing drying, soaking the clean stainless steel mesh in a dilute strong acid solution for corrosion, taking out the corroded stainless steel mesh, ultrasonically cleaning the corroded stainless steel mesh, and drying the cleaned stainless steel mesh; soaking the stainless steel mesh after corrosion in a salt solution of an inactive metal, performing reacting, taking out the reacted stainless steel mesh, ultrasonically cleaning the reacted stainless steel mesh, and performing drying; finally, soaking the dried stainless steel mesh in a long-chain alkyl organic acid solution for reaction and then taking out the reacted stainless steel mesh, performing ultrasonic cleaning and drying, so as to finally obtain the super-hydrophobic/super-oleophylic stainless steel mesh. The oil-water separation filter mesh prepared by the method has the advantages of being high in oleophylic speed, good in hydrophobic effect, not easyto fall off and reusable for many times, the separation of oil-containing wastewater can be realized quickly and efficiently, and the stainless steel mesh has good separation effect on kerosene, gasoline, liquid paraffin, toluene and the like and also has good separation effect on strong-acidity, strong-alkaline and high-salinity oil-containing wastewater, and has a wide application prospect in the fields of petrochemical environment protection and the like.

Description

technical field [0001] The invention belongs to the field of superhydrophobic materials, in particular to a superphobic / superoleophilic stainless steel mesh for oil-water separation and a preparation method thereof. Background technique [0002] Oil-water mixture is a common environmental pollutant with a wide range of sources, ranging from petroleum industry, manufacturing, transportation and other fields to food and catering, medicine and household life. Water is an important resource for production and life, so the oil-water separation step is particularly important in the oily wastewater treatment process. Conventional oil-water separation methods include gravity method, centrifugation method, adsorption method, flotation method, chemical method and so on. These traditional treatment methods generally have the disadvantages of large footprint, long time consumption, high consumption, and low separation efficiency. Essentially, oil-water separation is a problem of inter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D17/022
CPCB01D17/02
Inventor 台秀梅丁鹏杜志平刘晓英胡倡
Owner CHINA RES INST OF DAILY CHEM IND
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