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Oil-water separation net membrane with self-cleaning function and preparation method thereof

An oil-water separation mesh membrane, functional technology, applied in separation methods, immiscible liquid separation, liquid separation and other directions, can solve the problems of loss of oil-water separation function, complex preparation process, high-temperature curing, etc., achieve good oil-water separation effect, improve Separation efficiency, effect of reducing oil clogging

Active Publication Date: 2016-04-20
SHANDONG JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent applications CN1387932A, CN1721030A, CN101518695A and CN101708384A respectively disclose oil-water separation membranes with super-hydrophobic and super-oleophilic functions, which can realize oil-water separation, but there are also deficiencies, such as complicated preparation process, some using fluorine-containing compounds, Some require high temperature curing, etc., and the omentum is easy to lose the oil-water separation function due to oil clogging during use
However, there have been no reports of patents and literatures that use amphoteric polymers to modify the surface of metal mesh, realize oil-water separation through the superhydrophilic and underwater superoleophobic properties of amphoteric polymers, and have self-purification functions.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) Immerse a 200-mesh stainless steel mesh film with a thickness of 0.50 to 1.50 mm, whose length and width are arbitrarily set according to needs, in the Piranha solution (the volume ratio of 98% concentrated sulfuric acid to 30% hydrogen peroxide is 3:1), and slowly heat to The solution overflowed without bubbles. After cooling, take out the omentum, soak it in deionized water, and dry it under nitrogen flow for later use;

[0019] (2) Immerse the omentum obtained in (1) in 20 mL of dichloromethane solution containing 2-bromoisobutyryl bromide (0.4 mmol) and triethylamine (0.8 mmol) pre-cooled by ice-water mixture, and stir for 2 hours , continue to react overnight at room temperature, take out the omentum, wash it in deionized water, and dry it under nitrogen flow for later use;

[0020] (3) Immerse the omentum obtained in (2) into methanol (10mL), 2-methacryloyloxyethylphosphorylcholine (12mmol), 2,2'-bipyridine (0.6mmol), CuBr (0.2mmol ) in a mixed solution and ...

Embodiment 2

[0023] (1) Immerse a 200-mesh stainless steel mesh film with a thickness of 0.1 to 1.50 mm, whose length and width are arbitrarily set according to needs, in the Piranha solution (the volume ratio of 98% concentrated sulfuric acid to 30% hydrogen peroxide is 3:1), and slowly heat to No bubbles spill. After cooling, take out the omentum, soak it in deionized water, and dry it under nitrogen flow for later use;

[0024] (2) Immerse the omentum obtained in (1) in 20 mL of dichloromethane solution containing 2-bromoisobutyryl bromide (0.4 mmol) and triethylamine (0.8 mmol) pre-cooled by ice-water mixture, and stir for 2 hours , continue to react overnight at room temperature, take out the omentum, wash it in deionized water, and dry it under nitrogen flow for later use;

[0025] (3) Immerse the omentum obtained in (2) into methanol (10mL), 2-methacryloyloxyethylsulfonate betaine (12mmol), 2,2'-bipyridine (0.6mmol), CuBr (0.2 mmol) in a mixed solution, cooled in liquid nitrogen. ...

Embodiment 3

[0028] (1) Immerse a 200-mesh stainless steel mesh film with a thickness of 1.5 to 2.0 mm, whose length and width are arbitrarily set according to needs, in the Piranha solution (the volume ratio of 98% concentrated sulfuric acid to 30% hydrogen peroxide is 3:1), and slowly heat to No bubbles spill. After cooling, take out the omentum, soak it in deionized water, and dry it under nitrogen flow for later use;

[0029] (2) Immerse the omentum obtained in (1) in 20 mL of dichloromethane solution containing 2-bromoisobutyryl bromide (0.4 mmol) and triethylamine (0.8 mmol) pre-cooled by ice-water mixture, and stir for 2 hours , continue to react overnight at room temperature, take out the omentum, wash it in deionized water, and dry it under nitrogen flow for later use;

[0030](3) Immerse the omentum obtained in (2) into methanol (10mL), 2-methacryloyloxyethyl carboxybetaine (12mmol), 2,2'-bipyridine (0.6mmol), CuBr (0.2mmol ) in a mixed solution and cooled in liquid nitrogen. ...

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PUM

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Abstract

The invention discloses an oil-water separation net membrane with a self-cleaning function. The oil-water separation net membrane is prepared by taking a stainless steel net, an aluminum alloy net or a copper net as a base and chemically grafting (methyl) acrylic polymer containing amphoteric groups on the surfaces of the net and meshes, wherein the thickness of the net membrane is 0.50-2.50mm; the length and width of the net membrane are randomly set according to the requirements; the contact angle between the net membrane and water in air is less than 5 degrees; the contact angle between the net membrane and normal hexane under water is 160-165 degrees. A preparation method of the oil-water separation net membrane provided by the invention is simple; the stability is high; the permeability of pore space is high; the net membrane has the self-cleaning function; the oil-water separation efficiency is high; the oil-water separation net membrane can be applied to the fields of complex oil water mixture separation, oil-containing waste water treatment, and the like.

Description

technical field [0001] The invention relates to an oil-water separation omentum with self-cleaning function and a preparation method thereof, belonging to the technical field of organic-inorganic composite functional materials. Background technique [0002] Oily sewage comes from a wide range of sources, such as oil exploration, crude oil spills, ship ballast water, as well as chemical, steel, food, textile, mechanical processing and other industries that discharge a large amount of oily sewage into the environment. Oily sewage not only pollutes the environment, but also destroys the ecological balance and endangers human health. Therefore, it is of great significance to effectively treat oily sewage. In the treatment of oily sewage, oil-water separation is beneficial to water purification. At the same time, through oil-water separation, the removal of impurities such as water in the refined oil is of great significance to improve the quality of oil products. [0003] Utili...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D17/022
CPCB01D17/02
Inventor 唐新德张群庞来学韩念凤
Owner SHANDONG JIAOTONG UNIV
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