A method for preparing superhydrophobic copper mesh by dipping and coating polymer nanoparticles

A nanoparticle, micro-nanoparticle technology, applied in separation methods, chemical instruments and methods, liquid separation, etc., can solve the problems of complex preparation process, limited in-situ growth method, long growth time, etc., and achieve simple and good preparation methods. Business prospects, strong adhesion effect

Active Publication Date: 2021-10-15
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the complex preparation process and long growth time limit the application of the in situ growth method.

Method used

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  • A method for preparing superhydrophobic copper mesh by dipping and coating polymer nanoparticles
  • A method for preparing superhydrophobic copper mesh by dipping and coating polymer nanoparticles
  • A method for preparing superhydrophobic copper mesh by dipping and coating polymer nanoparticles

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Experimental program
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Effect test

Embodiment 1

[0033] Superphobic polymer micro-nanoparticles were prepared by self-emulsification / solvent diffusion method.

[0034] (1) Dissolve 1g of thermoplastic polyurethane elastomer in 30ml of DMF to form solution A, add 15ml of n-butanol, and stir to form translucent solution B; pour the above solution into water, stir to form a milky white dispersion system, centrifuge, wash and press 1g The concentration of / L is dispersed in ethanol solution to obtain superhydrophobic dispersion of polymer;

[0035] (2) Dissolving industrial-grade quick-drying adhesive 502 (α-ethyl cyanoacrylate) in acetone to form a solution C with a concentration of 10 wt%, which is used as an adhesive for subsequent use;

[0036] (3) Place the copper grid to be processed in clear water and ethanol for ultrasonic cleaning for 30 minutes to remove surface impurities;

[0037] (4) Soak the cleaned copper mesh in solution C, take it out after 2 minutes, then soak it in the polymer superhydrophobic coating, take i...

Embodiment 2

[0040] (1) Prepare superphobic polymer micro-nanoparticles by self-emulsification / solvent diffusion method. Dissolve 1g PVDF in 30ml DMF to form solution A, add 10ml ethanol, stir to form translucent solution B; pour the above solution into water, stir to form a milky white dispersion system, centrifuge and wash, and disperse in ethanol solution at a concentration of 1g / L Obtain superhydrophobic polymer coating;

[0041] (2) Dissolving industrial-grade quick-drying adhesive 502 (α-ethyl cyanoacrylate) in acetone to form a solution C with a concentration of 15 wt%, which is used as an adhesive for subsequent use;

[0042] (3) Place the copper grid to be processed in clear water and ethanol for ultrasonic cleaning for 30 minutes to remove surface impurities;

[0043] (4) Soak the cleaned copper mesh in solution C, take it out after 2 minutes, then soak it in the polymer superhydrophobic coating, take it out after 2 minutes, and dry the surface of the copper mesh at 60°C. A sup...

Embodiment 3

[0046] (1) Prepare superphobic polymer micro-nanoparticles by self-emulsification / solvent diffusion method. Dissolve 1g PSF in 30ml DMF to form solution A, add 5ml ethanol, stir to form translucent solution B; pour the above solution into water, stir to form a milky white dispersion system, centrifuge, wash and disperse in ethanol solution at a concentration of 1g / L Obtain super-hydrophobic coatings;

[0047] (2) Dissolving industrial-grade quick-drying adhesive 502 (α-ethyl cyanoacrylate) in acetone to form a solution B with a concentration of 15 wt%, which is used as an adhesive for subsequent use;

[0048] (3) Place the copper grid to be processed in clear water and ethanol for ultrasonic cleaning for 30 minutes to remove surface impurities;

[0049] (4) Soak the cleaned copper mesh in solution C, take it out after 2 minutes, then soak it in the polymer superhydrophobic coating, take it out after 2 minutes, and dry the surface of the copper mesh at 60°C. A superhydrophobi...

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Abstract

The invention discloses a method for preparing superhydrophobic copper mesh by dipping and coating polymer nanoparticles: adopting a self-emulsification / solvent diffusion method to prepare polymer micro-nano particles with superhydrophobic properties and dissolving them in water to obtain polymer nanoparticles Dispersion liquid: soak the copper mesh in the dispersion liquid of adhesive agent and polymer nanoparticle successively, and dry to obtain the superhydrophobic copper mesh. The invention has the advantages of simple process, convenient operation, and easy realization of industrial production; the prepared superhydrophobic copper mesh has strong hydrophobicity, good acid-base stability, and good separation efficiency and separation repeatability for various oil-water mixtures. And the invention does not use any expensive low-surface-energy substances, which greatly reduces the cost and has good commercial prospects.

Description

technical field [0001] The invention belongs to the technical field of superhydrophobic functional materials, and in particular relates to a method for preparing superhydrophobic copper mesh by dipping and coating polymer nanoparticles. Background technique [0002] The issue of water resources has always been widely concerned by all walks of life, and the protection and purification of water resources is our eternal topic. The current frequent oil spill accidents and the surge in the discharge of industrial oily wastewater have made oil / water separation technology a topic that has attracted the attention of researchers around the world. Traditional oil / water separation technologies mainly include filtration, centrifugation, adsorption, etc., but these methods are too inefficient and costly to operate, and do not meet people's demands for a green economy. Superhydrophobic materials have received extensive attention in the field of oil-water separation due to their large sur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D17/022
CPCB01D17/0202
Inventor 张国亮潘高峰张宇藩徐泽海
Owner ZHEJIANG UNIV OF TECH
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