CN102580558A - Non-pressure type hollow fiber filter membrane and preparation method thereof - Google Patents
Non-pressure type hollow fiber filter membrane and preparation method thereof Download PDFInfo
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- CN102580558A CN102580558A CN2012100336352A CN201210033635A CN102580558A CN 102580558 A CN102580558 A CN 102580558A CN 2012100336352 A CN2012100336352 A CN 2012100336352A CN 201210033635 A CN201210033635 A CN 201210033635A CN 102580558 A CN102580558 A CN 102580558A
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Abstract
The invention relates to a non-pressure type hollow fiber filter membrane and a preparation method thereof. The hollow fiber filter membrane is prepared from raw materials which consist of polysulfone, polyether sulfone, N,N-dimethylacetamide, N methyl pyrrolidinone, polyethylene glycol and sodium chloride; membrane holes are formed at the two ends of a filter membrane body; more than three micropores are formed on the wall of the hollow fiber filter membrane; and the outer diameter of the filter membrane body is 0.5+/-0.02mm, the aperture of each membrane hole is 0.3+/-0.02mm, and the aperture of each micropore is 0.05 to 0.1mm. By the non-pressure type hollow fiber filter membrane and the preparation method thereof, a spinning solution is sprayed out of a double-end spinning nozzle through a molding silk spray device under the action of gas pressure, the wall of a device filter membrane is uniform and smooth, and the prepared filter membrane is high in ultrafiltration rates; and due to the adoption of the raw material formula, the produced filter membrane can achieve a filtering effect without pressure, is high in water yield and convenient to use and can be applied in fields.
Description
Technical field
The present invention relates to the field of tunica fibrosa, especially a kind of no pressure type doughnut filter membrane and manufacturing approach thereof.
Background technology
Filter membrane is to filter water with fenestra as a kind of means that can be used for molecular filtration, and impurity in the water is held back; And there is not chemical change; Handle easy technology, but, have technical problem accordingly because of fenestra is very tiny; Filter membrane is to hold back the magnitude classification of material grains in the former water, and fenestra is divided into micro-filtration membrane, milipore filter, nano filter membrane and reverse osmosis membrane from coarse to fine.Above or the above molecular weight of 20 Wan Daoertun not of micro-filtration membrane aperture 0.2um.The milipore filter aperture is 10000～150000 molecular weight, and reverse osmosis membrane and NF membrane micropore are littler.More than four kinds of films all be to make Separation of Solid and Liquid with pressure-driven.
At present for some earthquake disasters area, water resource in short supply, all contaminated for existing water resource under such rugged environment; All can't directly drink, just need use filter membrane then, but because the filter membrane that uses all need be in that have under the pressure situation can water outlet in the prior art; If can water outlet, its water yield be little, uses very inconvenient like this; And if for open-air user, do not have power source, can't use at all.
Summary of the invention
The technical problem that the present invention will solve is: in order to overcome the above-mentioned middle problem that exists, a kind of no pressure type doughnut filter membrane and manufacturing approach thereof are provided, it has increased water yield, and technology is simple, and the tunica fibrosa wall thickness of shaping is even, and continuity is good.
The technical solution adopted for the present invention to solve the technical problems is: a kind of no pressure type doughnut filter membrane, and by the raw material that polysulfones, polyether sulfone, NN-dimethylacetylamide, N methyl pyrrolidone, polyethylene glycol and sodium chloride are formed, raw material comprises following ingredients: by weight percentage: the content of polysulfones is 10～15%, the content of polyether sulfone 5～10%, NN-dimethylacetylamide is 65～75%, the content of N methyl pyrrolidone is 8～10%, the content of polyethylene glycol is 3～4%, the content of sodium chloride is 1～5%; Process the doughnut filter membrane, polysulfones is as the main material of filter membrane, and polyether sulfone has increased its hydrophily; Both combine can increase the toughness of its film and anti-corrosive properties, and sodium chloride has increased the lubricated, water-soluble of hole; Increased the pore-forming performance, the NN-dimethylacetylamide can be convenient to the main material dissolving fully as solvent; The N methyl pyrrolidone is as solvent; Increased porosity, polyethylene glycol has increased hydrophily as solvent; The doughnut filter membrane comprises the filtration film body of hollow structure; The two ends of filtering film body offer fenestra, offer three above micropores on the membranous wall of doughnut filter membrane, and the external diameter of described filtration film body is 0.5 ± 0.02mm; The aperture of fenestra is 0.3 ± 0.02mm, and the aperture of micropore is 0.05～0.1mm.
Polysulfones with 10～15%, 5～10% polyether sulfone and 1～5% sodium chloride mix to dissolving; Add 65～75% NN-dimethylacetylamide, 8～10% N methyl pyrrolidone, 3～4% the extremely thorough dissolving spinning liquid of polyethylene glycol again; Spinning solution after the dissolving is delivered in the closed container of shaping spinning appts; In container, feed gas; The outer hole ejection of three the concentric diplopore spinning heads of spinning solution on the distributing pipe that is horizontally set on external container, the fiber of ejection gets into water-bath solidification forming, coiling, forms the doughnut filter membrane.
Described shaping spinning appts comprises airtight container and feed tube, and container top offers admission line, and the control valve of regulator solution surface pressure is housed on the admission line; The bottom is communicated with horizontally disposed distributing pipe; Three diplopore spinning heads and pressure sensor are installed on the distributing pipe, also are provided with on the described container and fill pipe, fill pipe and be connected with the endoporus of diplopore spinning head; The output of described pressure sensor is connected with the input of controller, and the output of controller connects control valve.
The invention has the beneficial effects as follows that no pressure type doughnut filter membrane of the present invention and manufacturing approach thereof adopt the shaping spinning appts; Under the pressure effect through gas; From the ejection of double end spinning head, device filter membrane membranous wall is even, smooth with spinning solution, and its produced filter membrane ultrafiltration rate is high; Adopt this kind composition of raw materials, its filter membrane of producing also can play the effect of filtration under no pressure situation, and its water yield is big, and is easy to use, can be fit to open-air the use.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Fig. 1 be doughnut filter membrane of the present invention the structural representation of shaping spinning appts;
Fig. 2 is the structural representation of the doughnut filter membrane processed through Fig. 1;
Fig. 3 is that the sealing of many doughnut filter membranes is potted in the structural representation in the housing.
1. containers among the figure, 2. feed tube, 3. admission line, 4. control valve, 5. distributing pipe, 6. diplopore spinning head, 7. pressure sensor is 8. filled pipe, and 9. controller 10. filters film body, 10-1. fenestra, 10-2. micropore.
The specific embodiment
Combine accompanying drawing that the present invention is done further detailed explanation now.These accompanying drawings are the sketch map of simplification, basic structure of the present invention only is described in a schematic way, so it only show the formation relevant with the present invention.
No pressure type doughnut filter membrane and manufacturing approach thereof as shown in Figure 1, at first by weight percentage, the polysulfones with 12%; 8% polyether sulfone and 3% sodium chloride mix to dissolving, add 70% NN-dimethylacetylamide, 9% N methyl pyrrolidone, 3.5% the extremely thorough dissolving spinning liquid of polyethylene glycol again, and the spinning solution after the dissolving is delivered in the closed container 1 of shaping spinning appts; In container 1, feed gas, spinning solution is on the distributing pipe 5 that is horizontally set on external container, and distributing pipe 5 is with the outer hole ejection from three concentric diplopore spinning heads 6 of the flow of 0.01～4ml/min; Be installed in 7 pairs of distributing pipes of pressure sensor on the distributing pipe 5 and carry out flow and monitor in real time, and fluid pressure signal is fed back on the controller 9 controller 9 output signals; Thereby control and regulation valve 4, admission pressure in the control container 1, solidification forming in the aqueous solution that the fiber entering of ejection is 40 ℃; Speed with 30～50m/min is reeled, and forms doughnut filter membrane (as shown in Figure 2), and the doughnut filter membrane comprises the filtration film body 10 of hollow structure; The two ends of filtering film body 10 offer fenestra 10-1; On the membranous wall that filters film body 10, offer a plurality of micropore 10-2, the external diameter that filters film body 10 is 0.5 ± 0.02mm, and the aperture of fenestra 10-1 is 0.3 ± 0.02mm; The aperture of micropore 10-2 is 0.05～0.1mm; With the many doughnut filter membranes of the processing material of packing into is in the housing of polycarbonate, carries out the injecting glue envelope at housing one end then and irritates, and forms filtering film component (as shown in Figure 3).
Table 1 is 0.1m for the membrane area of filtering film component of the present invention under the no pressure situation
2The time the properties of product test result, table 2 is 0.1m for the membrane area of common hyperfiltration membrane assembly under the no pressure situation
2The time the properties of product test result; Table 3 is 0.3m for the membrane area of filtering film component of the present invention under the no pressure situation
2The time the properties of product test result, table 4 is 0.3m for the membrane area of common hyperfiltration membrane assembly under the no pressure situation
2The time the properties of product test result.
Table 1
Table 2
Table 3
Table 4
From above-mentioned table 1 and table 2 or table 3 and table 4, can clearly find out, choose identical membrane area as experimental subjects, filter membrane of the present invention; Under no pressure situation; Its water yield is Duoed doubly a lot than common milipore filter water yield, prove the filter membrane of using this raw material to process like this; Can be applicable under the no pressure condition, be particularly useful for the user of field survivorship.
With above-mentioned foundation desirable embodiment of the present invention is enlightenment, and through above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this invention technological thought.The technical scope of this invention is not limited to the content on the specification, must confirm its technical scope according to the claim scope.
Claims (3)
1. no pressure type doughnut filter membrane; It is characterized in that: the raw material of forming by polysulfones, polyether sulfone, NN-dimethylacetylamide, N methyl pyrrolidone, polyethylene glycol and sodium chloride; Raw material comprises following ingredients: by weight percentage: the content of polysulfones is 10～15%, the content of polyether sulfone 5～10%, NN-dimethylacetylamide is 65～75%, the content of N methyl pyrrolidone is 8～10%, the content of polyethylene glycol is 3～4%, the content of sodium chloride is 1～5%; Process the doughnut filter membrane; The doughnut filter membrane comprises the filtration film body (10) of hollow structure; The two ends of filtering film body (10) offer fenestra (10-1), offer three above micropores (10-2) on the membranous wall of doughnut filter membrane (10), and the external diameter of described filtration film body (10) is 0.5 ± 0.02mm; The aperture of fenestra (10-1) is 0.3 ± 0.02mm, and the aperture of micropore (10-2) is 0.05～0.1mm.
2. manufacturing approach of not having pressure type doughnut filter membrane; It is characterized in that: the polysulfones with 10～15%, 5～10% polyether sulfone and 1～5% sodium chloride mix to dissolving; Add 65～75% NN-dimethylacetylamide, 8～10% N methyl pyrrolidone, 3～4% the extremely thorough dissolving spinning liquid of polyethylene glycol again; Spinning solution after the dissolving is delivered in the closed container of shaping spinning appts, in container, fed gas, the outer hole ejection of three the concentric diplopore spinning heads of spinning solution on the distributing pipe that is horizontally set on external container; The fiber of ejection gets into water-bath solidification forming, coiling, forms the doughnut filter membrane.
3. no pressure type doughnut filter membrane manufacturing approach according to claim 2; It is characterized in that: described shaping spinning appts comprises airtight container (1) and feed tube (2); Container (1) top offers admission line (3), and the control valve (4) of regulator solution surface pressure is housed on the admission line (3), and the bottom is communicated with horizontally disposed distributing pipe (5); Three diplopore spinning heads (6) and pressure sensor (7) are installed on the distributing pipe (5); Also be provided with on the described container (1) and fill pipe (8), fill pipe (8) and be connected, be provided with controller (9) between described pressure sensor (7) and the control valve (4) with the endoporus of diplopore spinning head (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012100336352A CN102580558A (en) | 2012-02-15 | 2012-02-15 | Non-pressure type hollow fiber filter membrane and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100336352A CN102580558A (en) | 2012-02-15 | 2012-02-15 | Non-pressure type hollow fiber filter membrane and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104043350A (en) * | 2014-05-20 | 2014-09-17 | 桐乡市健民过滤材料有限公司 | Pressureless polyethersulfone hollow fiber film with highly-asymmetric spongy structure |
| WO2023087530A1 (en) * | 2021-10-13 | 2023-05-25 | 富商国际股份有限公司 | Method for using hollow fiber filter element |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101288831A (en) * | 2008-06-12 | 2008-10-22 | 张亚琴 | Forming method and device of hollow fiber blood filtering membrane |
| CN101721925A (en) * | 2010-01-21 | 2010-06-09 | 常州市美纤膜技术有限公司 | Domestic hollow fiber ultrafiltration membrane for purifying water and preparation method thereof |
-
2012
- 2012-02-15 CN CN2012100336352A patent/CN102580558A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101288831A (en) * | 2008-06-12 | 2008-10-22 | 张亚琴 | Forming method and device of hollow fiber blood filtering membrane |
| CN101721925A (en) * | 2010-01-21 | 2010-06-09 | 常州市美纤膜技术有限公司 | Domestic hollow fiber ultrafiltration membrane for purifying water and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104043350A (en) * | 2014-05-20 | 2014-09-17 | 桐乡市健民过滤材料有限公司 | Pressureless polyethersulfone hollow fiber film with highly-asymmetric spongy structure |
| CN104043350B (en) * | 2014-05-20 | 2016-04-06 | 桐乡市健民过滤材料有限公司 | A kind of polyether sulphone hollow fibre film with no pressure with highly asymmetric cavernous structure |
| WO2023087530A1 (en) * | 2021-10-13 | 2023-05-25 | 富商国际股份有限公司 | Method for using hollow fiber filter element |
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Application publication date: 20120718 |