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Preparation method of hollow fiber oxygen permeable membrane

An oxygen-enriched membrane and fiber technology, applied in the field of separation membranes, can solve problems such as low efficiency, small specific surface area, and difficult operation

Inactive Publication Date: 2016-06-29
ANYANG HUASEN PAPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide a method for preparing a hollow fiber oxygen-enriched membrane, which can effectively solve the problem of small specific surface area of ​​the membrane, small processing capacity, low efficiency, and complicated preparation process. Difficult to operate and difficult to industrialized production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] In concrete implementation, the present invention is realized by the following steps:

[0025] (1) Dissolve 20g of polysulfone in 200ml of N-methylpyrrolidone, add 1g of polyethylene glycol 400 to obtain a polysulfone solution, add the polysulfone solution into the spinning syringe, and the speed of the spinning syringe is 7 μl / min, 8cm away from the spinning collector of the needle electrospinning equipment, the longitudinal speed of the spinning braided tube of the needle electrospinning equipment is 5cm / min, and the porous base layer; the porous base layer is rinsed with ion water for 20s, and then placed in Dry in a drying room at 40°C for 1 hour, and set aside;

[0026] (2) Dissolve 11g of hydroxyl-terminated polydimethylsiloxane in 110mL of tetrahydrofuran, mix with 6g of methyl hydrogen-containing silicone oil crosslinking agent, then add 2g of dibutyltin oxide, and stir at 60°C for 10h. Obtain casting solution;

[0027] (3) Coat the casting solution prepared ...

Embodiment 2

[0029] In concrete implementation, the present invention is realized by the following steps:

[0030] (1) Dissolve 20g of polysulfone in 200ml of N-methylpyrrolidone, add 1g of 4-hydroxybutyric acid to obtain a polysulfone solution, add the polysulfone solution into the spinning syringe, and the speed of the spinning syringe is 7μl / min , 8cm away from the spinning collector of the needle electrospinning equipment, the longitudinal travel speed of the spinning braided tube of the needle electrospinning equipment is 5cm / min, and the porous base layer; the porous base layer is rinsed with ion water for 20s, and then placed in 40 Dry in a drying room at ℃ for 1 hour, and set aside;

[0031] (2) Dissolve 11g of hydroxyl-terminated polydimethylsiloxane in 110mL of chloroform, mix with 6g of methyl hydrogen-containing silicone oil crosslinking agent, then add 2g of monobutyltin oxide, and stir at 60°C for 10h. Obtain casting solution;

[0032] (3) Coat the casting solution prepared...

Embodiment 3

[0033] In concrete implementation, the present invention is realized by the following steps:

[0034] (1) Dissolve 10g of polyethersulfone in 100ml of N-methylpyrrolidone, add 1g of polyethylene glycol 400 to obtain a polyethersulfone solution, add the polyethersulfone solution into the spinning syringe, and the spinning syringe speeds up 10μl / min, 10cm away from the spinning collector of the needle electrospinning equipment, the longitudinal travel speed of the braided tube of the needle electrospinning equipment is 5cm / min, and a porous base layer; rinse the porous base layer with ion water for 20s, and then place it in Dry in a drying room at 40°C for 1 hour, and set aside;

[0035] (2), [The raw materials involved in this step are different from the raw materials given in the content of the invention, which has exceeded the part of the invention, please modify, or add the materials in this step to the raw materials in the corresponding part of the content of the invention ...

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Abstract

The invention relates to a preparation method of a hollow fiber oxygen-enriched membrane, which can effectively solve the problems of small specific surface area, small processing capacity, low efficiency, complicated preparation process, difficult operation, and difficulty in industrialized production of the membrane. The method is that the lining support pipe The outer surface of the hollow fiber oxygen-enriched membrane is prepared by needle electrospinning equipment, and then cleaned with deionized water and left to dry; it is prepared by mixing a hydroxyl-terminated polymer, a catalyst, a cross-linking agent and a first solvent Molding solution: Coat the casting solution on the porous substrate, firstly cure it at room temperature for 1-20 minutes, and then cure it at 50-80°C for 20-45 minutes, so that the silicone rubber can be completely cross-linked and form a hollow fiber oxygen-enriched membrane ; The present invention has higher gas flux, and the flux can reach 1.3m 3 / (m 2 h), the process is simple, easy to operate, and suitable for industrial applications.

Description

technical field [0001] The invention relates to separation membrane technology, in particular to a method for preparing a hollow fiber oxygen-enriched membrane. Background technique [0002] Oxygen and nitrogen separation in the atmosphere is one of the most concerned and promising membrane technologies. Usually people call the air with an oxygen volume fraction exceeding 20.93% "oxygen-enriched" air. In addition to the combustion-supporting properties of ordinary air, oxygen-enriched membranes In addition to important functions such as air, respiration and industrial oxidation, it is also widely used in the fields of energy conservation, environmental protection, medical treatment and biological products. The traditional methods of producing oxygen-enriched air are cryogenic separation and pressure swing adsorption, both of which have the disadvantages of high energy consumption and complicated equipment. Compared with other oxygen enrichment methods, the membrane oxygen e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/54B01D71/68B01D71/28B01D71/50B01D71/16B01D71/42B01D71/38B01D71/48B01D71/30B01D71/64B01D69/08B01D69/12B01D67/00
CPCB01D71/54B01D67/0002B01D69/08B01D69/12B01D71/16B01D71/28B01D71/30B01D71/38B01D71/42B01D71/48B01D71/50B01D71/64B01D71/68
Inventor 刘洁邢阳齐静李升军李建林
Owner ANYANG HUASEN PAPER
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