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Super-hydrophobic and super-oleophilic copper wire mesh free of low surface energy material modification and preparation method thereof

A low-surface-energy substance and super-hydrophobic technology, which is applied in separation methods, chemical instruments and methods, and immiscible liquid separation, can solve problems such as poor thermal stability, reduced super-hydrophobic performance, and environmental pollution, and achieve the ability to improve, The effect of ease of processing

Active Publication Date: 2017-06-13
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these oil-water separation membranes are all made of low surface energy substances such as fluorine-containing compounds or carbon-containing long-chain alkyl groups, which not only pollute the environment to a certain extent, but also have poor thermal stability and are easily decomposed during use. Decrease in superhydrophobicity
Although there is no low surface energy substance involved in the Chinese patent application CN104801067A, the chemical reagents used are expensive and highly corrosive, and the cost is high and it is not easy to prepare in a large area

Method used

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  • Super-hydrophobic and super-oleophilic copper wire mesh free of low surface energy material modification and preparation method thereof
  • Super-hydrophobic and super-oleophilic copper wire mesh free of low surface energy material modification and preparation method thereof
  • Super-hydrophobic and super-oleophilic copper wire mesh free of low surface energy material modification and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 180-mesh copper mesh with a size of 50×30, after surface pretreatment, electrodeposition and high-temperature drying, a super-hydrophobic and super-oleophilic surface with outstanding structural characteristics is obtained, specifically including the following steps and process conditions:

[0030] (1) Copper sheet pretreatment: ultrasonically clean the copper mesh with acetone, alcohol, and deionized water for 5 minutes at room temperature, and blow dry with a hair dryer to remove oil and impurities on the surface;

[0031] (2) Plating solution configuration: Dissolve thioacetamide, disodium edetate and copper sulfate pentahydrate in deionized water, wherein the concentration of thioacetamide is 0.1mol / L, ethylenediaminetetraacetic acid di The concentration of sodium is 0.2mol / L, and the concentration of copper sulfate pentahydrate is 0.02mol / L;

[0032] (3) Electrodeposition: take two pretreated copper grids as the poles of alternating current respectively, take 100ml...

Embodiment 2

[0036] The 120-mesh brass mesh with a size of 50×30 is subjected to surface pretreatment, electrodeposition and high-temperature drying to obtain a super-hydrophobic and super-oleophilic surface with outstanding structural features, specifically including the following steps and process conditions:

[0037] (1) Copper sheet pretreatment: ultrasonically clean the brass mesh with acetone, alcohol, and deionized water for 2 minutes at room temperature, and blow dry with a hair dryer to remove oil and impurities on the surface;

[0038] (2) Electroplating solution configuration: dissolve thioacetamide, disodium edetate and copper sulfate pentahydrate in deionized water, wherein the concentration of thioacetamide is 0.05mol / L, ethylenediaminetetraacetic acid di The concentration of sodium is 0.4mol / L, and the concentration of copper sulfate pentahydrate is 0.08mol / L;

[0039] (3) Electrodeposition: use two pretreated copper nets as the poles of alternating current respectively, tak...

Embodiment 3

[0043] The 300-mesh phosphorus copper mesh with a size of 50×30, after surface pretreatment, electrodeposition and high-temperature drying, obtains a super-hydrophobic and super-oleophilic surface with outstanding structural characteristics, specifically including the following steps and process conditions:

[0044] (1) Copper sheet pretreatment: ultrasonically clean the phosphor copper mesh with acetone, alcohol, and deionized water for 10 minutes at room temperature, and blow dry with a hair dryer to remove oil and impurities on the surface;

[0045] (2) Electroplating solution configuration: Dissolve thioacetamide, ethylenediaminetetraacetic acid disodium and copper sulfate pentahydrate in deionized water, wherein the concentration of thioacetamide is 0.18mol / L, ethylenediaminetetraacetic acid di The concentration of sodium is 0.1mol / L, and the concentration of copper sulfate pentahydrate is 0.06mol / L;

[0046] (3) Electrodeposition: take two pretreated copper grids as the ...

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Abstract

The invention belongs to the technical field of metal material surface treatment and discloses a super-hydrophobic and super-oleophilic copper wire mesh free of low surface energy material modification and a preparation method thereof. The preparation method comprises the steps of cleaning and drying the copper wire meshes, and taking two pieces of copper wire meshes as two electrodes of AC separately; carrying out electrodeposition in a deionized water electroplate liquid containing thioacetamide, ethylenediamine tetraacetic acid disodium and copper sulfate pentahydrate; and cleaning the copper meshes subjected to electrodeposition and then carrying out high-temperature drying at 80-200 DEG C to obtain the super-hydrophobic and super-oleophilic copper wire mesh. The two electrodes of the AC can be quickly etched at the same time, and the super-hydrophobic and super-oleophilic copper wire mesh is suitable for large-area production, special equipment does not need to be used, and the treatment process is easy to implement; and the related solution formula does not contain a toxic fluorine-containing or carbon-containing low surface energy material, is free of harm to the environment and a human body, and has good economical and environmental benefits.

Description

technical field [0001] The invention belongs to the technical field of surface treatment of metal materials, and in particular relates to a superhydrophobic and superoleophilic copper mesh that does not need to be modified by low surface energy substances and a preparation method thereof. Background technique [0002] With the rapid development of industry and offshore oil exploitation, marine oil spill accidents occur frequently. Oil spill accidents at sea will cause a large amount of crude oil to cover a sea area, which will have a profound impact on the environment; at the same time, the random discharge of daily oil will also make the inland offshore surface oil pollution more and more serious, which will bring great harm to the living environment of human beings. How to effectively collect and remove oil and organic pollutants from water has become a world-class challenge and has attracted widespread attention. Traditional oil removal methods include fence oil absorpti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D17/022
CPCB01D17/02
Inventor 康志新牛蕾张俊逸
Owner SOUTH CHINA UNIV OF TECH
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