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Responsive oil and water separation net film with underwater super lipophobicity property and preparation method thereof

An oil-water separation mesh membrane, underwater superoleophobic technology, which is applied in separation methods, liquid separation, chemical instruments and methods, etc., can solve the problems of no separation mixture system, environmental pollution, complex preparation process, etc., and achieve economical separation. The effect of cost, easy availability of raw materials and simple process

Active Publication Date: 2013-05-22
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned oil-water separation membranes are partially prepared by using fluorine-containing compounds, which have certain pollution to the environment, and some of them have complicated preparation processes, and none of them are capable of separating a mixture system with a large amount of water and a small amount of oil.

Method used

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  • Responsive oil and water separation net film with underwater super lipophobicity property and preparation method thereof
  • Responsive oil and water separation net film with underwater super lipophobicity property and preparation method thereof
  • Responsive oil and water separation net film with underwater super lipophobicity property and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Example 1. Preparation of a responsive oil-water separation membrane with underwater superoleophobic properties

[0038] (1) Soak the 200-mesh stainless steel mesh in a mixed solution of ethanol and acetone with a volume ratio of 1:1, ultrasonically clean it for 15 minutes, take it out and dry it at room temperature;

[0039] (2) At room temperature, add 25mL of water, 10g of dimethylaminoethyl methacrylate, 0.20g of 2,2-diethoxyacetophenone, 0.30g of N,N'-methylenebis Acrylamide and 0.1g polyacrylamide were uniformly mixed by magnetic stirring to obtain a mixed solution; in the mixed solution, the mass percentage of dimethylaminoethyl methacrylate was 28.09%, 2,2-diethoxybenzene The mass percentage of ethyl ketone is 0.56%, the mass percentage of N,N'-methylenebisacrylamide is 0.84%, and the mass percentage of polyacrylamide is 0.28%;

[0040] (3) Soak the dried stainless steel mesh in step (1) in the mixed solution obtained in step (2) for 2 minutes and take it out; ...

Embodiment 2

[0045] Example 2. Preparation of a responsive oil-water separation omentum with underwater superoleophobic properties

[0046] (1) Soak the 300-mesh copper mesh in a mixed solution of ethanol and acetone with a volume ratio of 1:1, ultrasonically clean it for 15 minutes, take it out and dry it at room temperature;

[0047] (2) At room temperature, add 25mL of water, 10g of diethylaminoethyl methacrylate, 0.20g of 2,2-diethoxyacetophenone, 0.30g of N,N'-methylenebis Acrylamide and 0.1g polyacrylamide were uniformly mixed by magnetic stirring to obtain a mixed solution; in the mixed solution, the mass percentage of diethylaminoethyl methacrylate was 28.09%, 2,2-diethoxybenzene The mass percentage of ethyl ketone is 0.56%, the mass percentage of N,N'-methylenebisacrylamide is 0.84%, and the mass percentage of polyacrylamide is 0.28%;

[0048] (3) Soak the dried stainless steel mesh in step (1) in the mixed solution obtained in step (2) for 5 minutes;

[0049] (4) Take out the s...

Embodiment 3

[0053] Example 3. Preparation of a responsive oil-water separation omentum with underwater superoleophobic properties

[0054] (1) Soak the 400-mesh stainless steel mesh in a mixed solution of ethanol and acetone with a volume ratio of 1:1, ultrasonically clean it for 15 minutes, take it out and dry it at room temperature;

[0055] (2) At room temperature, add 25mL of water, 10g of dimethylaminoethyl methacrylate, 0.25g of 2,2-diethoxyacetophenone, 0.36g of N,N'-methylenebis Acrylamide and 0.20g polyacrylamide were uniformly mixed by magnetic stirring to obtain a mixed solution; in the mixed solution, the mass percentage of dimethylaminoethyl methacrylate was 27.93%, 2,2-diethoxybenzene The mass percentage of ethyl ketone is 0.70%, the mass percentage of N,N'-methylenebisacrylamide is 1.01%, and the mass percentage of polyacrylamide is 0.56%;

[0056] (3) Soak the dried stainless steel mesh in step (1) in the mixed solution obtained in step (2) for 10 minutes;

[0057] (4) T...

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Abstract

The invention discloses a responsive oil and water separation net film with an underwater super lipophobicity property and a preparation method thereof. The method comprises the following steps of: (1) dissolving a polymer monomer, a photoinitiator, a cross-linking agent and a thickening agent in water so as to obtain a mixed solution; (2) soaking a fabric net in the mixed solution; and (3) taking out the fabric net, carrying out a polymerization reaction on the soaked fabric net in ultraviolet light the wavelength of which is 365nm so as to obtain a polymer hydrogel coating layer in the fabric net, and then obtain the responsive oil and water separation net film with the underwater super lipophobicity property. The responsive oil and water separation net film with the underwater super lipophobicity property, provided by the invention, has the advantages that the oil-contaminated water can be separated, meanwhile, the temperature and pH dual responsive characteristics are realized, the controllable oil and water separation is realized, a separation device is simplified, and the separation cost is saved.

Description

technical field [0001] The invention relates to a responsive oil-water separation mesh with underwater super-oleophobic properties and a preparation method thereof, belonging to the field of surface modification of solid materials. Background technique [0002] In recent years, oil-water separation has become a very important topic, and it is of great significance in treating oily sewage and improving oil quality. In the existing oil-water separation technology, the oil-water separation net is used to separate the oil and water, so that one of the components of oil and water passes through the separation net, and the other component is blocked above the separation net. Fraction collection, which makes the use of oil-water separation membranes cumbersome and costly in industrial applications. Therefore, it is necessary to provide a responsive oil-water separation omentum. By simply changing external conditions, such as temperature, pH, etc., oil and water can pass through th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D17/022
Inventor 冯琳曹莹泽陶磊危岩
Owner TSINGHUA UNIV
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