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A kind of superhydrophobic lipophilic separation metal mesh and preparation method thereof

A metal mesh and oil separation technology, applied in separation methods, liquid separation, chemical instruments and methods, etc., can solve the problems of high price and difficult industrialization of n-octadecyl phosphate, achieve low cost, reduce surface energy, and simple preparation Effect

Active Publication Date: 2019-11-22
HAINAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, n-octadecyl phosphate is expensive, and this method is difficult to industrialize

Method used

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  • A kind of superhydrophobic lipophilic separation metal mesh and preparation method thereof
  • A kind of superhydrophobic lipophilic separation metal mesh and preparation method thereof
  • A kind of superhydrophobic lipophilic separation metal mesh and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A method for superhydrophobic and lipophilic separation of metal mesh, comprising the steps of:

[0040] S1. Pretreatment of metal mesh: 100-mesh stainless steel wire mesh is ultrasonically cleaned with deionized water, acetone, ethanol, and deionized water in order to remove organic and inorganic dirt on the surface, and then immersed in 0.2M ferric chloride etching solution Medium etching for 20min, ultrasonically cleaned with deionized water again, and set aside;

[0041]S2. Soak the pretreated metal mesh in a 0.36% chitosan acetic acid solution with a volume fraction of 2% acetic acid solution as a solvent and chitosan as a solute, so that chitosan can fully adhere On the surface of the metal mesh, take it out after soaking for 20 minutes, and dry it at 60°C;

[0042] S3. Soak the metal mesh attached with chitosan in an ammonia solution with a volume fraction of 2%, take it out after soaking for 20min, and dry at 60°C;

[0043] S4. Using ethyl orthosilicate as the...

Embodiment 2

[0046] A method for superhydrophobic and lipophilic separation of metal mesh, comprising the steps of:

[0047] S1. Pretreatment of metal mesh: 200-mesh stainless steel wire mesh is ultrasonically cleaned with deionized water, acetone, ethanol, and deionized water in sequence to remove organic and inorganic dirt on the surface, and then immersed in 0.5mol / L hydrochloric acid solution for etching Etched in the solution for 20 minutes, then ultrasonically cleaned with deionized water again, and set aside;

[0048] S2. Soak the pretreated metal mesh in a 0.2% chitosan acetic acid solution with a volume fraction of 1% acetic acid solution as a solvent and chitosan as a solute, so that chitosan can fully adhere On the surface of the metal mesh, take it out after soaking for 30 minutes, and dry it at 60°C;

[0049] S3. Soak the metal mesh attached with chitosan in an ammonia solution with a volume fraction of 4%, take it out after soaking for 35min, and dry at 60°C;

[0050] S4. U...

Embodiment 3

[0053] A method for superhydrophobic and lipophilic separation of metal mesh, comprising the steps of:

[0054] S1. Pretreatment of metal mesh: 200-mesh stainless steel wire mesh is ultrasonically cleaned with deionized water, acetone, ethanol, and deionized water in sequence to remove organic and inorganic dirt on the surface, and then immersed in 0.4mol / L sulfuric acid solution for etching Etched in the solution for 20 minutes, then ultrasonically cleaned with deionized water again, and set aside;

[0055] S2, soak the pretreated metal mesh in 0.5% chitosan acetic acid solution with a volume fraction of 5% acetic acid solution as a solvent and chitosan as a solute, so that chitosan can fully adhere On the surface of the metal mesh, take it out after soaking for 35 minutes, and dry it at 60°C;

[0056] S3. Soak the metal mesh attached with chitosan in an ammonia solution with a volume fraction of 7%, take it out after soaking for 45min, and dry at 60°C;

[0057] S4. Using e...

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Abstract

The invention relates to a super-hydrophobic lipophilic separating metal mesh, and a preparation method thereof. The preparation method comprises following steps: firstly, attachment of chitosan ontothe surface of a metal mesh is carried out so as to form a chitosan film on the surface of the metal mesh, wherein the chitosan film is beneficial for loading of silica microparticles; then ethyl orthosilicate hydrolysis is adopted to generate silica microparticles, and deposition of the silica microparticles on the surface of the chitosan coated metal mesh is carried out, so that enrichment of the rough silica microparticles on the surface of the metal mesh is realized; and at least, the surface of the metal mesh is modified with trimethylchlorosilane, so that a super-hydrophobic lipophilic surface is formed.

Description

technical field [0001] The invention relates to a superhydrophobic and lipophilic separation metal mesh and a preparation method thereof, belonging to the technical field of chemical industry and functional materials. Background technique [0002] Oily wastewater mainly comes from production wastewater in daily life and chemical production, and its discharge will cause great harm to the environment; once an oil spill occurs, it will cause a large amount of crude oil to leak, float on the sea surface, and spread rapidly on the sea surface A layer of airtight oil film is formed, and this layer of oil film will hinder the oxygen enrichment of water. If the dissolved oxygen in the sea is insufficient, the respiration of aquatic organisms such as fish in the water will be restricted, which will cause abnormal growth of aquatic organisms. Sometimes it will even cause the water body to become smelly, which affects the utilization of water resources. Crude oil is very harmful to bo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D17/022E02B15/04
CPCB01D17/02E02B15/045
Inventor 王芙香刘群潘勤鹤任国建牛成杨玮婷
Owner HAINAN UNIV