Oil-water separation copper foam and preparation method thereof

A technology of oil-water separation and copper foam, which is applied in the field of copper foam, can solve the problems of lack of third-dimensional support and supplement, complicated process methods, and difficulty in large-scale preparation, and achieve excellent oil absorption characteristics, excellent superhydrophobic and superoleophilic properties, and high The effect of thermal conductivity

Inactive Publication Date: 2013-05-08
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above-mentioned oil-water separation materials still have disadvantages such as complex process methods, high cost, and difficulty in large-scale preparation.
At the same time, due to the two-dimensional scale effect of the mesh material, it lacks the support and supplement of the third dimension, so it has certain limitations in terms of separation efficiency, separation speed, wear resistance, durability, etc.

Method used

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  • Oil-water separation copper foam and preparation method thereof
  • Oil-water separation copper foam and preparation method thereof
  • Oil-water separation copper foam and preparation method thereof

Examples

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Effect test

preparation example Construction

[0026] A kind of preparation method of efficient oil-water separation copper foam, described method comprises the following steps:

[0027] (1) Foam copper pre-treatment: select three-dimensional through-hole foam copper with a thickness of 1-3mm (prepared by any method, commercially available can be used), the pore size is 400-1500μm, and cut it into the required size (for example, 5cm ×5cm), cleaned with acetone and ethanol in an ultrasonic environment for 5 minutes, blown dry with nitrogen, and then immersed in dilute hydrochloric acid aqueous solution with a molar concentration of 1mol / L for 60s to remove the oxide film on the surface and activate the surface of the foamed copper tendon. After taking it out, wash it successively with 1mol / L dilute sodium hydroxide aqueous solution and deionized water, and dry it with nitrogen;

[0028] (2) Surface roughening of activated foamed copper tendons: immerse the treated and activated foamed copper in a closed 0.1-0.5mol / L ammonia...

Embodiment 1

[0031] (1) Select a three-dimensional through-hole copper foam with a thickness of 1mm and a pore size of 400μm, cut it into the required size (5cm×5cm), clean it with acetone and ethanol in an ultrasonic environment for 5min, dry it with nitrogen, and then immerse it in a molar concentration Treat in 1mol / L hydrochloric acid aqueous solution for 60s to remove the oxide film on the surface and activate the surface of foamed copper tendons. After taking it out, wash it with 1mol / L sodium hydroxide aqueous solution and deionized water successively, and dry it with nitrogen gas;

[0032] (2) Immerse the activated copper foam in a closed 0.1mol / L ammonia solution for 12 hours, take it out, rinse it with clean water and dry it; put the ammonia solution in a closed container, heat it in a water bath, and the temperature is 5°C;

[0033](3) Soak the copper foam that has been activated and roughened in the stearic acid modification solution, soak it in a water bath at 80°C for 30 minut...

Embodiment 2

[0036] (1) Select a three-dimensional through-hole copper foam with a thickness of 3mm and a pore size of 1500μm. Cut it into the required size (5cm×5cm), clean it with acetone and ethanol in an ultrasonic environment for 5min, dry it with nitrogen, and immerse it in a molar concentration Treat in 1mol / L hydrochloric acid aqueous solution for 60s to remove the oxide film on the surface and activate the surface of foamed copper tendons. After taking it out, wash it with 1mol / L sodium hydroxide aqueous solution and deionized water successively, and dry it with nitrogen;

[0037] (2) Immerse the activated copper foam in a closed 0.5mol / L ammonia solution for 48 hours, take it out, rinse it with clean water and dry it; put the ammonia solution in a closed container, heat it in a water bath, and the temperature is 5°C;

[0038] (3) Soak the activated and roughened copper foam in the stearic acid modification solution, soak it in a water bath at 95°C for 90 minutes, and then rinse it...

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Abstract

The invention discloses oil-water separation copper foam and a preparation method thereof. The preparation method comprises the following steps of: selecting three-dimensional through-hole copper foam with the thickness of 1-3mm and the aperture size of 400-1500mu m, cutting the copper foam into required size, respectively washing with acetone and ethanol in an ultrasound environment, drying with nitrogen, immersing in dilute acid for treatment, then washing with a diluted alkaline solution and deionized water, and drying; then immersing in a closed 5-DEG C ammonia-water solution with the thickness of 0.1-0.5mol / L for 12-48 hours, taking out, washing with clean water and drying; finally soaking in stearaic acid modification liquid for 30-90 minutes under a 80-95 DEG C water bath condition, then washing with an ethanol solution so as to remove unabsorbed or weak unabsorbed stearaic acid molecules and other impurities on the copper foam, and finally drying to obtain the long-chain alkane molecular modified copper foam. The copper foam has a high-efficiency oil-water separation characteristic.

Description

technical field [0001] The invention relates to a copper foam, in particular to a copper foam used for oil-water separation and a preparation method thereof. Background technique [0002] Oil-water separation has important applications in the treatment of oily wastewater generated in petroleum, chemical, seawater oil pollution, machinery manufacturing, textile, catering and other industries. It is also an important means for diesel engines to purify fuel. important meaning. [0003] At present, the treatment methods for oil-water separation on the market mainly include gravity separation, electrolysis separation, centrifugal separation, chemical treatment and coalescence separation. Among them, the electro-de-separation method and the centrifugation method require power support, and the energy consumption is high, and the pollution of the chemical reagents used in the chemical treatment method also limits their application. The coalescence separation method is a method com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/08C22C9/00B01D17/022
Inventor 张友法吴春晓余新泉臧东勉陈锋
Owner SOUTHEAST UNIV
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