Preparation and application method of super-wetting stain-resistant stainless steel fiber felt for emulsion separation

An emulsion separation, stainless steel technology, applied in anodizing, nanotechnology and other directions, can solve problems such as unfavorable large-scale production and application, complex preparation process, expensive reagents, etc., to improve the resistance to dynamic droplet penetration pressure and static resistance. The ability of liquid column pressure, good toughness, and the effect of improving anti-fouling

Active Publication Date: 2018-12-14
SOUTHEAST UNIV
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  • Application Information

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Problems solved by technology

However, the preparation process of the micro-nano composite rough structure and super-wetting properties on the surface of stainless steel fiber mat reported so far is complicated, the equipment requirements are high, and the reagents are expensive, which is not conducive to large-scale production and application.

Method used

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  • Preparation and application method of super-wetting stain-resistant stainless steel fiber felt for emulsion separation
  • Preparation and application method of super-wetting stain-resistant stainless steel fiber felt for emulsion separation
  • Preparation and application method of super-wetting stain-resistant stainless steel fiber felt for emulsion separation

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preparation example Construction

[0027] A method for preparing a super-wetting and stain-resistant stainless steel fiber felt for emulsion separation according to the present invention, the method comprises first adopting double anode electroplating to realize the coating of micron-sized copper particles on the surface of the stainless steel fiber, and then adopting electrochemical oxidation to obtain micronized copper hydroxide Nanoscale composite structures. Specific steps are as follows:

[0028] 1. Sample pretreatment: Cut the stainless steel fiber felt into small pieces of the required size, ultrasonically clean them with acetone for 10 minutes, wash them with absolute ethanol and deionized water for 5 minutes each, take them out, and dry them.

[0029] 2. Double anode copper plating: prepare 0.2~0.8mol / L CuSO 4 ·5H 2 O, 1.0~1.5mol / L H 2 SO 4 , 0.02-0.05g / L chloride ion and 0.03-0.06g / L polyethylene glycol (2000-10000) acidic electroplating solution, placed in the electroplating tank. Place the pret...

Embodiment example 1

[0032] Cut the stainless steel fiber felt into small pieces of 5cm×5cm, first use acetone to ultrasonically clean it for 10 minutes, then wash it with absolute ethanol and deionized water for 5 minutes respectively, take it out and dry it. The scanning electron microscope photos of the cleaned stainless steel fiber felt are as follows: figure 1 shown. Prepare 0.8mol / L CuSO 4 ·5H 2 O, 1.1mol / L H 2 SO 4 , 0.02g / L chloride ion and 0.03g / L polyethylene glycol mixed aqueous solution is placed in the electroplating tank. The pretreated stainless steel felt is used as the cathode, and two pure copper sheets of the same size are used as the anode, and the distance between the cathode and the anode is 5cm, placed in the electroplating tank, and the constant current density is 80mA / cm 2 , electroplating 10min. After electroplating, the samples were taken out, washed with ethanol and deionized water, and dried in an oven at 50°C. After electroplating, micron-sized copper particles...

Embodiment example 2

[0034] Cut the stainless steel fiber mat into small pieces of 5cm×5cm, first use acetone to ultrasonically clean it for 10 minutes, then wash it with absolute ethanol and deionized water for 5 minutes respectively, take it out and dry it. Prepare 0.5mol / L CuSO 4 ·5H 2 O, 1.2mol / L H 2 SO 4 , 0.04g / L chloride ion and 0.05g / L polyethylene glycol mixed aqueous solution, placed in the electroplating tank. The pretreated stainless steel fiber felt is used as the cathode, and two pure copper sheets of the same size are used as the anode, and the distance between the cathode and the anode is 3cm, placed in the electroplating tank, and the constant current density is 40mA / cm 2 , Plating 0.5h. After electroplating, the samples were taken out, washed with ethanol and deionized water, and dried in an oven at 50°C. Configure 1mol / L NaOH aqueous solution. At room temperature, the electroplated and activated stainless steel fiber felt is used as the anode, and two pure copper sheets of...

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Abstract

The invention relates to preparation and using methods of ultra-infiltrating strain-resistant stainless steel fiber felt for emulsion separation. Firstly, micron-sized copper particles are electrically deposited on stainless steel fibers through a double-anode electroplating method, and then the copper particles are oxidized into copper hydroxide of a micro-nano structure through an electrochemical oxidation method. The ultra-infiltrating characteristics such as super-hydrophilicity and super-hydrophobicity are obtained after modification of different surface energy substances, and efficient separation of an oil-water stratified mixture and oil-in-water emulsion or water-in-oil emulsion is achieved. According to the methods, facilities and the process are simple, operation is convenient, raw materials are easily obtained, cost and energy consumption are low, and the methods are suitable for surface roughening of other stainless steel products made of the same materials and can be applied to industrial production on a large scale.

Description

technical field [0001] The invention relates to a method for preparing an emulsion separation material, in particular to a method for preparing and using a super-wetting stain-resistant stainless steel fiber felt. Background technique [0002] Metal stainless steel fiber felt is made of stainless steel fiber wires sintered at high temperature. It has a three-dimensional network porous structure with high porosity, uniform pore size distribution, large specific surface area, high strength, and excellent structural properties. At the same time, it is resistant to high temperature, organic solvents, nitric acid, lye, etc., can be welded and processed, and is easy to regenerate and clean. It can be used for filtering dust in the fields of petroleum, chemical industry, and metallurgy, and for precision filtration of lubricating oil and hydraulic oil in the fields of electronics, aviation, machinery, and ships. , Medicine, food field liquid filtration and other fields are widely u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D7/06C25D3/38C25D11/34B82Y40/00
CPCB82Y40/00C25D3/38C25D7/0607C25D11/34
Inventor 颜子尧张友法朱海燕李豆豆蔡名娟郭鹏业林云敏余新泉
Owner SOUTHEAST UNIV
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