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Cu-Zn (copper-zinc)/polysulfone inorganic-organic hollow fibrous hybrid membrane and preparation method thereof

A hybrid membrane, cu-zn technology, applied in the field of fiber membrane materials, to achieve the effect of easy industrialization, good separation, and low cost

Active Publication Date: 2018-07-24
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at present, there is no report on the preparation of hollow fiber hybrid membranes by blending Cu-Zn metal powder with polysulfone polymers, so the preparation of Cu-Zn / polysulfone inorganic-organic hollow fiber hybrid membranes is a new attempt

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Weigh 5.25g of polysulfone particles and 38.5g of Cu-Zn metal powder (average particle size is 1000 mesh) and put them in a 60°C oven to dry for 24h, then add polysulfone particles into 25.2g of N-methylpyrrolidone solution , then add PVP1.05g, and mechanically stir for 6 hours in a water bath at 70°C to make it evenly stirred to form a homogeneous organic solution, then slowly add Cu-Zn metal powder to the above organic solution under rapid stirring, and continue stirring After 3 hours, the casting solution was obtained.

[0031] (2) After vacuum degassing the casting solution for 0.5h, pour it into the storage tank of the spinning device, and then the casting solution is pushed by the air pressure of 0.04MPa through the spinning head (the inner diameter is 1mm, the outer diameter is 1.5mm) Extrusion molding, at the same time, open the water outlet valve of the inner coagulation bath, so that the inner coagulation bath enters the spinning head under the action of a...

Embodiment 2

[0034] (1) Weigh 6.65g of polysulfone particles and 38.5g of Cu-Zn metal powder (average particle size is 1000 mesh) and put them in an oven at 60°C for 24 hours, then add polysulfone particles into 23.8g of N-methylpyrrolidone solution , then add PVP1.05g, and mechanically stir for 6 hours in a water bath at 70°C to make it evenly stirred to form a homogeneous organic solution, then slowly add Cu-Zn metal powder to the above organic solution under rapid stirring, and continue stirring After 3 hours, the casting solution was obtained.

[0035] (2) After vacuum degassing the casting solution for 0.5h, pour it into the storage tank of the spinning device, and then the casting solution is pushed by the air pressure of 0.08MPa through the spinning head (the inner diameter is 1mm, the outer diameter is 1.5mm) Extrusion molding, at the same time, open the water outlet valve of the inner coagulation bath, so that the inner coagulation bath enters the spinning head under the action of...

Embodiment 3

[0038] (1) Weigh 8.05g of polysulfone particles and 38.5g of Cu-Zn metal powder (average particle size is 1000 mesh) and put them in an oven at 60°C for 24 hours, then add polysulfone particles into 22.4g of N-methylpyrrolidone solution , then add PVP1.05g, mechanically stir in a water bath at 70°C for 6h, make it stir evenly, and form a homogeneous organic solution, then slowly add Cu-Zn metal powder into the organic solution under rapid stirring, and continue stirring for 3h After that, the casting solution is obtained.

[0039](2) After vacuum degassing the casting solution for 0.5h, pour it into the storage tank of the spinning device, and then the casting solution is pushed by the air pressure of 0.12MPa through the spinning head (the inner diameter is 1mm, the outer diameter is 1.5mm) Extrusion molding, at the same time, open the water outlet valve of the inner coagulation bath, so that the inner coagulation bath enters the spinning head under the action of air pressure;...

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Abstract

The invention belongs to the field of fibrous membrane materials, and discloses a Cu-Zn (copper-zinc) / polysulfone inorganic-organic hollow fibrous hybrid membrane and a preparation method thereof. Thepreparation method comprises the following steps of dissolving polysulfone into an organic solvent, adding a PVP (polyvinyl pyrrolidone) additive and Cu-Zn metal powder, and uniformly stirring and mixing, so as to obtain a membrane casting liquid; defoaming the membrane casting liquid under the vacuum condition, pouring into a spinning device, pushing to a spinning head by air pressure, extrudingand forming, condensing and forming by internal and external condensing baths, soaking into pure water, and naturally airing, so as to obtain the Cu-Zn / polysulfone inorganic-organic hollow fibrous hybrid membrane. The prepared Cu-Zn / polysulfone inorganic-organic hollow fibrous hybrid membrane has the advantages that the self-supporting function is realized, any supporter is not needed, the mechanical strength is high, and the separating property is good; the Cu-Zn alloy in the membrane can improve the hydrophilia of the membrane, and effectively remove the residual chloride in water; the application prospect is good.

Description

technical field [0001] The invention belongs to the field of fiber membrane materials, in particular to a Cu-Zn / polysulfone inorganic-organic hollow fiber hybrid membrane and a preparation method thereof. Background technique [0002] Organic-inorganic hybrid membranes introduce inorganic components into an organic matrix and combine the excellent properties of organic and inorganic components. It has become a hot spot in the research of separation membrane materials. Its rapid development provides new ideas for the design and development of membrane materials. [0003] In terms of organic materials, the price of polysulfone raw materials is low, and the membrane preparation method is simple. The prepared polysulfone membrane has excellent oxidation resistance, thermal stability, hydrolysis resistance and excellent mechanical properties; and the prepared separation membrane has a wide range of pore sizes. , Wide range of applications; therefore, it is widely used in water t...

Claims

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Application Information

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IPC IPC(8): B01D71/68B01D69/08B01D69/02B01D67/00C02F1/72C02F101/36
CPCB01D67/0079B01D69/02B01D69/08B01D71/68B01D2325/36C02F1/72C02F2101/36
Inventor 隋贤栋李安安
Owner SOUTH CHINA UNIV OF TECH
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