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Hydrophilic hollow fiber dry microporous membrane and preparation method thereof

A hydrophilic, microporous membrane technology, applied in the field of membrane separation, can solve the problems of environmental protection, volatile, unsafe, etc., and achieve the effects of low cost, extended shelf life, and safe and stable operation

Inactive Publication Date: 2013-04-24
TIANJIN TISUN ITASCA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, ethanol is a flammable solvent, highly volatile, neither environmentally friendly nor safe

Method used

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  • Hydrophilic hollow fiber dry microporous membrane and preparation method thereof
  • Hydrophilic hollow fiber dry microporous membrane and preparation method thereof
  • Hydrophilic hollow fiber dry microporous membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048]Hydrophilic hollow fiber dry state microporous membrane is characterized in that it is composed of polyolefin hollow fiber microfiltration membrane base membrane and penetrating hydrophilic surfactant; wherein polyolefin hollow fiber microfiltration membrane base membrane and hydrophilic The weight-to-volume ratio of the surfactant is 1:0.5% (w / v); the hydrophilic surfactant is diisobutyl sodium sulfosuccinate; the hydrophilic hollow fiber is dry state microporous membrane structure, which includes a polypropylene membrane silk matrix 1, a hydrophilic membrane internal permeate 3; wherein the hydrophilic membrane internal permeate penetrates through the polypropylene membrane silk matrix 1 to the film layer 2 of the polypropylene membrane silk, Micropores 4 of the polypropylene membrane filament. The pore diameter of the polypropylene membrane silk matrix is ​​0.1 μm.

[0049] Preparation method of hydrophilic hollow fiber dry microporous membrane:

[0050] (1) Prepare...

Embodiment 2

[0055] Hydrophilic hollow fiber dry state microporous membrane is characterized in that it is composed of polyolefin hollow fiber microfiltration membrane base membrane and penetrating hydrophilic surfactant; wherein polyolefin hollow fiber microfiltration membrane base membrane and hydrophilic The weight-to-volume ratio of the surfactant is 1:5% (w / v); the hydrophilic surfactant is sodium diisohexyl sulfosuccinate; the dry state of the hydrophilic hollow fiber Microporous membrane structure, which includes a polypropylene membrane silk matrix 1, a hydrophilic membrane internal permeate 3; wherein the hydrophilic membrane internal permeate 3 penetrates through the polypropylene membrane silk matrix 1 to the film layer 2 of the polypropylene membrane silk, Micropores 4 of the polypropylene membrane filament. The pore diameter of the polypropylene membrane silk matrix is ​​0.1 μm.

[0056] Preparation method of hydrophilic hollow fiber dry microporous membrane:

[0057] (1) Pr...

Embodiment 3

[0062] Hydrophilic hollow fiber dry state microporous membrane is characterized in that it is composed of polyolefin hollow fiber microfiltration membrane base membrane and penetrating hydrophilic surfactant; wherein polyolefin hollow fiber microfiltration membrane base membrane and hydrophilic The weight-to-volume ratio of the surfactant is 1:10% (w / v); the hydrophilic surfactant is diisooctyl sodium sulfonate; the hydrophilic hollow fiber dry micro Porous membrane structure, which includes polypropylene membrane filament matrix 1, hydrophilic membrane internal permeate 3; wherein hydrophilic membrane internal permeate 3 penetrates into the film layer 2 of polypropylene membrane filament through polypropylene membrane filament matrix 1, polypropylene membrane filament Micropores 4 of the acrylic membrane silk. The pore diameter of the polypropylene membrane silk matrix is ​​0.1 μm.

[0063] Preparation method of hydrophilic hollow fiber dry microporous membrane:

[0064] (1...

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Abstract

The invention discloses a hydrophilic hollow fiber dry microporous membrane and a preparation method thereof. The hydrophilic hollow fiber dry microporous membrane consists of a polyolefin hollow fiber micro-filtration membrane base membrane (PP membrane) in which a hydrophilic surfactant permeates, wherein the weight ratio of the polyolefin hollow fiber micro-filtration membrane base membrane to the hydrophilic surfactant is 1:0.1-20 percent. By the method, the non-volatilized hydrophilic surfactant with low molecular weight is easily diluted without residues; and after hydrophilic treatment is executed, a dried hydrophilic active substance can be firmly adsorbed to the surface and micro holes of the membrane, cannot be lost and volatilized and is easy to store or convey. After the membrane is treated, the fixed property, such as the mechanical strength and the physical and chemical index, of the microporous membrane cannot be changed. The method is a simple and quick hydrophilic treatment method.

Description

technical field [0001] The invention belongs to the technical field of membrane separation, relates to the technical field of surface modification preparation of polymer polyolefin hollow fiber microfiltration membranes, and particularly relates to a dry-state micropore of a hydrophilic hollow fiber modified without alcohols and organic solvents Membranes and methods of making them. Background technique [0002] Polyolefin is a material for the manufacture of microporous separation membranes with excellent performance. The alkali and acid resistance performance is very outstanding. The hollow fiber microporous membrane made by melt spinning and uniaxial stretching not only has good separation performance, but also has wet spinning (NIPS) or thermal spinning (TIPS) Its incomparable mechanical strength is its inherent characteristic, and it is widely used in sewage treatment and other fields. In addition, polyolefin PP or PE, raw materials are easy to obtain and the price is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/26B01D71/34B01D69/08B01D67/00
Inventor 赵玉峰侯春梅
Owner TIANJIN TISUN ITASCA TECH