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Preparation method of super-hydrophilic oleophobic net film and application thereof in oil water separation

A super-hydrophilic and omentum technology, which is applied in the fields of chemistry, chemical engineering and functional materials, can solve the problems of complex preparation process, easy pollution and separation omentum, complex process, etc., and achieve simple preparation process, good application prospect and good separation effect Effect

Inactive Publication Date: 2014-02-19
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese invention patents CN101708384A, CN101518695, CN1721030A, etc. have reported the oil-water separation omentum with superhydrophobic and super lipophilic functions, but the above-mentioned omentum is not suitable for the separation of oil-water mixture of a small amount of oil in a large amount of water, and it is easy to pollute the separation omentum, etc.
[0004] Chinese invention patents CN102350094A, CN103316507A etc. report a kind of oil-water separator with superhydrophilicity and underwater superoleophobicity, but the process is complicated and the environment of oil-water separation It is underwater, and the device is cumbersome, which limits its wide range of applications
[0005] Yang J.; Zhang Z.; Xu X.; Zhu X.; Men X.; Zhou X. J.Mater.Chem.2012, 22, 2834 reported a A superhydrophilic-superoleophobic polymer nanocomposite coating not only overcomes the problem of oil pollution on the hydrophilic surface, but also can be applied to oil-water separation, but the preparation process of the polymer nanocomposite coating is complicated and the preparation conditions are harsh. high cost

Method used

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  • Preparation method of super-hydrophilic oleophobic net film and application thereof in oil water separation
  • Preparation method of super-hydrophilic oleophobic net film and application thereof in oil water separation
  • Preparation method of super-hydrophilic oleophobic net film and application thereof in oil water separation

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for preparing a superhydrophilic and oleophobic mesh, using a brass mesh as a base, constructing a micro-nano structure by a simple solution soaking method, and using polydimethyldiallylammonium chloride-sodium perfluorooctanoate / silica (PDDA-PFO / SiO 2 ) complex for surface modification, the steps are as follows:

[0028] 1) Clean the brass mesh with a pore size of 180 mesh with washing powder, ethanol solution with a concentration of 50 w%, and deionized water for 10 minutes, and dry it in an electric blast drying oven for 1 hour;

[0029] 2) Weigh 0.849 g AgNO under dark conditions 3 Put the powder into 250ml of deionized water, and then ultrasonically oscillate in the ultrasonic tank until it is completely dissolved; use a pipette to take 0.08ml of ammonia water with a concentration of 27w%, and add it dropwise to the AgNO 3 solution, to get AgNO 3 Ammonia solution;

[0030] 3) Put the brass mesh treated in step 1) into the solution for 60s, take it out,...

Embodiment 2

[0041] A preparation method of superhydrophilic and oleophobic omentum, the steps are as follows:

[0042] 1) Clean the brass mesh with a pore size of 180 mesh with washing powder, ethanol solution with a concentration of 50 w%, and deionized water for 5 minutes, and dry it in an electric blast drying oven for 2 hours

[0043] 2) Weigh 0.849 g AgNO under dark conditions 3 Put the powder into 250ml of deionized water, and then ultrasonically oscillate in the ultrasonic tank until it is completely dissolved; use a pipette to take 0.08ml of ammonia water with a concentration of 27w%, and add it dropwise to the AgNO 3 solution, to get AgNO 3 Ammonia solution;

[0044] 3) Put the brass mesh treated in step 1) into the solution for 60s, take it out, and then put it in a 90°C drying oven to dry for 3 hours. 3 It is easy to decompose when exposed to light, so the experiment process should be completely protected from light;

[0045] 4) Add 0.9 g of nano-SiO 2 Particles were ultraso...

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Abstract

The invention discloses a preparation method of a super-hydrophilic oleophobic net film. A silver micro-nanometer branch type structure is constructed through a simple solution dipping method with a brass net as a substrate; a poly-dimethyl diallyl ammonium chloride-perfluoro sodium caprylate / silicon dioxide compound is used for modifying the surface to prepare the super-hydrophilic oleophobic net film; the super-hydrophilic oleophobic net film is used for oil water separation. The preparation method of the super-hydrophilic oleophobic net film is simple, and is suitable for industrial production; the super-hydrophilic oleophobic net film is applied in the oil water separation to realize the effect of water penetrating the net film and oil not penetrating the net film, and has a better separation effect on vegetable oil and gasoline; the oil water separation net film has the advantages of easy cleaning, recycling property, good stability and excellent application foreground in the oil water separation.

Description

technical field [0001] The invention belongs to the technical fields of chemistry, chemical engineering and functional materials, in particular to a preparation method of a superhydrophilic and oleophobic omentum and its application in oil-water separation. Background technique [0002] Due to the increasing amount of industrial oily sewage and frequent oil spill accidents, how to efficiently separate oil from water has become an increasingly urgent problem in modern industrial processes and environmental protection. [0003] Based on the wettability of materials, superhydrophobic and superoleophilic films have been successfully prepared. Chinese invention patents CN101708384A, CN101518695, CN1721030A, etc. have reported the oil-water separation omentum with superhydrophobic and super lipophilic functions, but the above-mentioned omentum is not suitable for the separation of oil-water mixture of a small amount of oil in a large amount of water, and it is easy to pollute the...

Claims

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Application Information

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IPC IPC(8): B01D17/022
Inventor 袁志好姬悄悄杜学丽
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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