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PSF (polysulfone)-TPE (thermoplastic elastomer)-OMMT (organic montmorillonite) blended hollow fiber membrane and preparation method thereof

A technology of thermoplastic elastomer and organic montmorillonite, applied in the field of polysulfone-thermoplastic elastomer-organic montmorillonite blended hollow fiber membrane and its preparation, can solve the hydrophilicity and anti-pollution performance of polysulfone hollow fiber membrane Poor performance, reduced service life, decreased membrane flux, etc., to achieve the effect of improving comprehensive mechanical properties and anti-pollution performance, stable performance, and improving toughness

Active Publication Date: 2016-10-12
贵州省材料技术创新基地
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The polysulfone hollow fiber membrane has poor hydrophilicity and anti-pollution performance, and is easily polluted in practical applications, which reduces the membrane flux and reduces the service life of the membrane.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1 of the present invention: polysulfone-thermoplastic elastomer-organic montmorillonite blended hollow fiber membrane, calculated in parts by mass, including 18.5 parts of polysulfone, 1.5 parts of sulfonated polysulfone, and 35.6 parts of polyethylene glycol Alcohol 400, 44.4 parts of N,N-dimethylacetamide, 3 parts of organic montmorillonite and 5 parts of thermoplastic elastomer TPE.

[0018] The preparation method of polysulfone-thermoplastic elastomer-organic montmorillonite blended hollow fiber membrane, each component is taken according to the above-mentioned mass fraction, and the organic montmorillonite is put into supercritical carbon dioxide reaction before the organic montmorillonite is used In the kettle, the reaction temperature is 40 ° C, the reaction pressure is ≥ 20 MPa, and the reaction time is 2 hours. After the reaction is completed, the pressure is released quickly and repeated 4 times to obtain organic montmorillonite treated with supercritic...

Embodiment 2

[0023] Example 2 of the present invention: polysulfone-thermoplastic elastomer-organic montmorillonite blended hollow fiber membrane, calculated in parts by mass, including 15 parts of polysulfone, 1.7 parts of sulfonated polysulfone, and 33 parts of polyethylene glycol Alcohol 400, 48 parts of N,N-dimethylacetamide, 0.5 part of organic montmorillonite and 1 part of thermoplastic elastomer TPE.

[0024] The preparation method is the same as in Example 1.

[0025] After testing, the performance indicators of the product in Example 2 are: inner diameter 600-800um, wall thickness 200-300um, pure water flux ≥ 180L·m-2·h-1, retention rate for bovine serum albumin (67000) ≥ 90%, and the tensile strength of the membrane filament is ≥4.0 MPa.

Embodiment 3

[0026] Example 3 of the present invention: polysulfone-thermoplastic elastomer-organic montmorillonite blended hollow fiber membrane, calculated in parts by mass, including 20 parts of polysulfone, 1.2 parts of sulfonated polysulfone, and 37 parts of polyethylene glycol Alcohol 400, 42 parts of N,N-dimethylacetamide, 5 parts of organic montmorillonite and 10 parts of thermoplastic elastomer TPE.

[0027] The preparation method is the same as in Example 1.

[0028] After testing, the performance indicators of the product in Example 3 are: inner diameter 600-800um, wall thickness 200-300um, pure water flux ≥ 130L·m-2·h-1, retention rate of bovine serum albumin (67000) ≥96%, tensile strength of membrane filament ≥5MPa.

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Abstract

The invention discloses a PSF (polysulfone)-TPE (thermoplastic elastomer)-OMMT (organic montmorillonite) blended hollow fiber membrane and a preparation method thereof. Aiming at problems of performance of a PSF hollow fiber membrane and combining respective advantages of the TPE and the OMMT, the novel PSF / TPE / OMMT blended hollow fiber membrane is prepared with a phase inversion method. According to the invention, the toughness of the PSF hollow fiber membrane is improved, and the application range of the PSF hollow fiber membrane is extended; furthermore, on the premise that the better water flux and higher rejection rate of the PSF hollow fiber membrane are kept, the synthesized mechanical properties and the antifouling property of the PSF hollow fiber membrane can be improved; the overall performance of the polymer membrane can be improved, the OMMT further plays a role of a bulking agent for a PSF / TPE composite material, intersolubility of PST / TPE is improved, and a PSF / TPE / OMMT composite material with more stable performance is formed.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a polysulfone-thermoplastic elastomer-organic montmorillonite blended hollow fiber membrane and a preparation method thereof. Background technique [0002] Polysulfone (PSF) material has the advantages of non-toxicity, good compression resistance, good chemical stability, high heat resistance and wide pH range, and has become the most widely used polymer membrane material in modern industry. The polysulfone hollow fiber membrane has poor hydrophilicity and anti-fouling performance, and is easily polluted in practical applications, which reduces the membrane flux and reduces the service life of the membrane. For this reason, inorganic nanoparticles such as Al 2 o 3 ,TiO 2 , SiO 2 , ZrO 2 And carbon nanotubes, etc., to improve the hydrophilicity, strength, hardness, permeability and pollution resistance of polysulfone membranes. Contents of the invention [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/68B01D69/08B01D67/00
CPCB01D67/0079B01D69/08B01D71/68B01D2325/24
Inventor 姚勇张敏敏秦舒浩张凯舟杨敬葵谢高艺邵慧菊靳进波
Owner 贵州省材料技术创新基地
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