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A kind of preparation method of porous composite membrane with high permeability and high stability

A porous composite membrane, high stability technology, applied in chemical instruments and methods, semi-permeable membrane separation, permeation/dialysis water/sewage treatment, etc., can solve the problems of poor anti-pollution ability, easy to operate, easy to industrialize, The effect of simple preparation process

Active Publication Date: 2022-03-08
辽宁科京新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cellulose materials are rich in resources, with good hydrophilicity and strong membrane anti-fouling properties; polysulfones have excellent mechanical properties, including polysulfone, polyethersulfone and polyether ether ketone, etc., which are widely used in industrial separation. Very good application; another large category is polyamide polymer, which has strong corrosion resistance and high temperature resistance, but polyamide polymer has high water flux in water treatment, but its anti-pollution ability poor

Method used

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  • A kind of preparation method of porous composite membrane with high permeability and high stability
  • A kind of preparation method of porous composite membrane with high permeability and high stability

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Experimental program
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Effect test

Embodiment 1

[0031] In this embodiment, the preparation method of a porous composite membrane with high permeability and high stability, the specific steps are as follows:

[0032] (1) Disperse 0.5 g of zeolite in 50 ml of tetrahydrofuran and stir for 16 hours. After ultrasonic dispersion treatment for 4 hours, add 0.005 g of sodium dodecylbenzenesulfonate and stir for 4 hours to form a dispersed solution.

[0033] (2) Add the dispersion solution of step (1) to 40 ml of ethanol and 30 ml of ethylene glycol mixed solution and stir for 3 hours, then add 70 g of perfluorosulfonic acid resin, and heat and stir at 220°C to prepare a gel-like perfluorosulfonic acid resin. Fluorosulfonic acid resin mixed slurry.

[0034] (3) Put the slurry prepared in step (2) into a mold, and use a hot pressing method at a temperature of 130°C to form it. After forming, the temperature is kept at 80°C to volatilize the volatile substances occupying the pores and leave the pores to prepare porous Composite film....

Embodiment 2

[0038] In this embodiment, the preparation method of a porous composite membrane with high permeability and high stability, the specific steps are as follows:

[0039] (1) Disperse 2 grams of zeolite in 50 milliliters of tetrahydrofuran and stir for 12 hours. After ultrasonic dispersion treatment for 3 hours, add 0.002 g of sodium dodecylbenzenesulfonate and stir for 3 hours to form a dispersed solution.

[0040] (2) Add the dispersion solution of step (1) into 40 ml of ethanol and 30 ml of ethylene glycol mixed solution and stir for 2 hours, then add 70 g of perfluorosulfonic acid resin, heat and stir at 220°C to prepare gel-like full Fluorosulfonic acid resin mixed slurry.

[0041] (3) Put the slurry prepared in step (2) into a mold, and use a hot pressing method at a temperature of 130°C to form it. After forming, the temperature is kept at 80°C to volatilize the volatile substances occupying the pores and leave the pores to prepare porous Composite film.

[0042] The rel...

Embodiment 3

[0045] In this embodiment, the preparation method of a porous composite membrane with high permeability and high stability, the specific steps are as follows:

[0046] (1) Disperse 0.1 g of zeolite in 50 ml of tetrahydrofuran and stir for 24 hours. After ultrasonic dispersion treatment for 5 hours, add 0.001 g of sodium dodecylbenzenesulfonate and stir for 5 hours to form a dispersed solution.

[0047] (2) Add the dispersion solution of step (1) to 40 ml of ethanol and 30 ml of ethylene glycol mixed solution and stir for 4 hours, then add 70 g of perfluorosulfonic acid resin, and heat and stir at 220°C to prepare a gel-like perfluorosulfonic acid resin. Fluorosulfonic acid resin mixed slurry.

[0048] (3) Put the slurry prepared in step (2) into the mold, and mold it by hot pressing at a temperature of 130°C. After molding, the temperature is kept at 80°C to volatilize the volatile substances occupying the pores and leave the pores to prepare porous Composite film.

[0049] ...

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Abstract

The invention relates to the field of water treatment membrane preparation, in particular to a preparation method of a porous composite membrane with high permeability and high stability. Use perfluorosulfonic acid resin as the film-forming material, fill the porous material with volatile materials, mix the porous material containing volatile substances with high-concentration perfluorosulfonic acid gel-like colloid, and prepare porous materials by heating volatilization and leaving holes Composite film. Because the composite membrane prepared by the invention has a large number of meandering and penetrating micropores, the membrane has the advantages of small membrane resistance and high permeability, good chemical stability, high mechanical strength, simple preparation process, easy operation and easy industrialization.

Description

technical field [0001] The invention relates to the field of water treatment membrane preparation, in particular to a preparation method of a porous composite membrane with high permeability and high stability. Background technique [0002] Gas separation and water treatment are important separation aspects related to human life. Membrane separation technology plays an important role. It is energy-saving, environmentally friendly, simple and efficient, and easy to industrialize. It has broad development prospects. Therefore, the development of membrane materials is the key to the development of membrane separation technology. In the current research on separation membrane materials, organic polymer membranes are currently the most widely used and commercialized membranes due to their excellent film-forming properties and mechanical properties. [0003] Polymer materials mainly include cellulose, polysulfone and polyamide. Cellulose materials are rich in resources, with goo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D71/76B01D69/12B01D69/02B01D67/00C02F1/44
CPCB01D71/76B01D69/02B01D69/12B01D67/0079C02F1/44B01D2325/02B01D2325/24
Inventor 赵丽娜肖伟张建国彭海泉
Owner 辽宁科京新材料有限公司