CN103962019A - Drinking water purification composite nano-filtration membrane and preparation process thereof - Google Patents
Drinking water purification composite nano-filtration membrane and preparation process thereof Download PDFInfo
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- CN103962019A CN103962019A CN201310032563.4A CN201310032563A CN103962019A CN 103962019 A CN103962019 A CN 103962019A CN 201310032563 A CN201310032563 A CN 201310032563A CN 103962019 A CN103962019 A CN 103962019A
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Abstract
The present invention relates to the technical field of polymer material membranes, particularly to a novel drinking purification composite nano-filtration membrane. According to the method, polyether sulfone and polyurethane are adopted as main materials, and other pore forming solvents are adopted to blend, wherein through blending of polyether sulfone with polyurethane, the prepared drinking purification composite nano-filtration membrane is provided withcharacteristics of a certain complementarity, high temperature resistance, good acid resistance, good alkali resistance, good hydrophobicity, good oil resistance, toughness, wear resistance, aging resistance, high flux, uniform pore size, and nano-scale size. According to the present invention, after deep well water or municipal tap water is purified through the drinking water purification composite nano-filtration membrane, bacteria, viruses, rust, colloid, chlorine residue, ammonia, nitrogen, organic polymer compounds and other harmful substances in water can be removed, the obtained water can be directly and safely drunk, minerals, trace elements, dissolved oxygen and other beneficial substances in water are not destroyed and lost, the purified water is weakly alkaline so as to provide benefits for human body health, and the required minerals are not required to be additionally supplemented so as to provide the low production cost.
Description
Technical field
The present invention relates to purifying of drinking water polymer material film technical field, be specifically related to a kind of polyether sulfone and polyurethane comixing nanofiltration film and preparation technology.
Background technology
At present, due to chemical fertilizer and the irrational use of agricultural chemicals, not only cause soil compaction, polluted the drinking water sources such as river, river, lake simultaneously, the discharge beyond standards of the harmful substance contents such as organic matter, ammonia, nitrogen in industrial wastewater particularly, causes the severe contamination of Drinking Water water quality.In addition the infringement of the secondary pollution of water to human body in hydraulic pipeline, pond, the healthy of numerous people masses in serious threat.In order further to improve the quality that improves public drinking water, the film filter of selling in the market has coiled reverse osmosis membrane, hollow fiber ultrafiltration film, ceramic membrane.Reverse osmosis membrane flux is low, need power consumption, can not retain mineral matter useful in water, dead-end filtration.Hollow fiber ultrafiltration film is the mineral matter in compression resistance, non-refractory, reservation water not, can not remove water small molecular organic matter, affects water quality mouthfeel.Pottery membrane flux is little, cost is high.Blend masking is paid attention to by people day by day, an important means that become and improve film properties, reduces masking cost.The composite membrane making is the purifying of drinking water composite nanometer filter membrane material of a class excellence.
Summary of the invention
The object of the invention is, purifying of drinking water composite nanometer filtering film is polyether sulfone and polyurethane comixing masking, and wherein PES has superior heat-resisting quantity and good acidproof, alkali resistance, its hydrophobicity is better, and heat-resisting quantity is fabulous, but UV resistant is poor, pliability is poor, more crisp, easy fracture of wire during spinning; Polyurethane has good oil resistivity, toughness, wearability, resistance to ag(e)ing.After polyether sulfone, both blend of polyurethane, can form certain complementarity, have heat-resisting quantity and good acidproof, alkali resistance, its hydrophobicity better, the feature of oil resistivity, toughness, wearability, resistance to ag(e)ing.Phreatic water or municipal tap water purify through purifying of drinking water composite nanometer filtering film, remove in water the harmful substances such as bacterium, virus, iron rust, colloid, chlorine residue, ammonia, nitrogen and organic high molecular compound, can directly drink safely, and the benefit materials such as mineral matter wherein, trace element and dissolved oxygen is not destroyed and run off, water purification water quality be alkalescent, be more of value to people healthy, therefore, do not need to supplement required mineral matter etc. in addition, production cost is lower.
The object of the invention is to be realized by following technical scheme:
Purifying of drinking water composite nanometer filtering film casting solution reparation technology: polyether sulfone, polyurethane comixing ratio are pressed 8:2, add a certain amount of pore former and solvent dimethylacetylamide to dissolution equipment to carry out swelling, until dissolve completely, become stoste, after filtration, make casting solution after deaeration; Spinning and aftertreatment technology: casting solution is made to purifying of drinking water composite nanometer filtering film through dry-jet wet spinning technique, air-dry, make membrane structure be fixed to finished product.
The purifying of drinking water composite nanometer filtering film of preparing by this method has good separating property.
Accompanying drawing explanation
Below in conjunction with implementing, the present invention is described in detail.
Fig. 1 is technological process of the present invention
Fig. 2 is the single structure cross sectional representation of purifying of drinking water composite nanometer filtering film of the present invention.
The specific embodiment
Embodiment mono-:
The reparation technology of spinning solution:
Get polyether sulfone, polyurethane comixing ratio by 8:2, getting dimethyl sulfoxide (DMSO) DMSO is solvent, gets percentage by weight and be 1% Mg (ClO
4)
2solid as additive, after above-mentioned substance drop into is dissolved under 0.2MPa pressure equipment solids removed by filtration impurity after filtration, through vacuum plant, carry out bubble removing and make film silk casting solution, vacuum <-0.1MPa.
Generally, spinning casting solution temperature is controlled at 40 ℃～60 ℃, and filter pressure is at 0.2MPa～0.4MPa.
Spinning and aftertreatment technology:
The casting solution making is spun into purifying of drinking water composite nanometer filtering film through dry-jet wet spinning spinning, after stretching, make solvent in the nascent film solution prevapourising that partly volatilized, again nascent film is immersed to contain weight percent concentration be in 2% the DMSO aqueous solution, by double diffusion, frozen glue completes solidifying of strand, protect again after the processing of hole, through washing, air-dry operation, remove solvent and coagulating agent in purifying of drinking water composite nanometer filtering film, make membrane structure be fixed to finished product.Wherein salivating temperature is 40 ℃, humidity 60%; Solvent pre-evaporation is 10 seconds, and temperature is 20 ℃; 10 ℃ of coagulation bath temperatures; The aqueous solution that guarantor's hole agent is ethylene glycol, weight percent concentration is 20%; Draw ratio is 1.7 times; During spray silk, adopt concentric circles inserting pipe-type spinning nozzle.
Generally, salivation temperature is 40 ℃～50 ℃, humidity 60%～70%; Solvent pre-evaporation is 10 seconds～60 seconds, and temperature is 20 ℃～40 ℃; Coagulation bath composition is the dimethyl sulfoxide (DMSO) DMSO aqueous solution, percentage by weight 2%～50%, 10 ℃～30 ℃ of temperature; Draw ratio is 1.7 times～1.9 times; Protect the aqueous solution that hole agent is generally ethylene glycol, weight percent concentration 20%～50%.
Accompanying drawing 1 is shown in its technological process.
Embodiment bis-: technique and flow process are with embodiment mono-, and concrete technology parameter is as follows:
Polyether sulfone: polyurethane=8:2
Solvent: dimethyl sulfoxide (DMSO) DMSO
Additive (Mg (ClO
4)
2) amount: 20%
Spinning casting solution temperature: 50 ℃
Filter pressure: 0.3MPa
Vacuum: ﹤-0.1MPa
Spinning head: concentric circles plug-in type
Salivation temperature: 45 ℃
Salivation chamber humidity: 65%
Solvent pre-evaporation: 30 seconds
Coagulation bath composition: the dimethyl sulfoxide (DMSO) DMSO aqueous solution
Coagulating bath concentration: 40%
Coagulation bath temperature: 20 ℃
Draw ratio: 1.8 times
Protect hole agent: the aqueous solution of ethylene glycol
Concentration: 30%
Embodiment tri-:
A purifying of drinking water composite nanometer filtering film, is characterized in that: the structure of its cross section is that polyether sulfone, polyurethane comixing high performance composite membrane inwall, film supporting layer, compacted zone and film outer wall join successively.
The advantage that the present invention has is: purifying of drinking water composite nanometer filter energy film casting solution belongs to the compatible system of part, has micron-scale phase separation in system.Blend ratio solution phase capacitive is better, and film shaping speed is suitable, spinning process continous-stable, and it is best that film properties also reaches.The purifying of drinking water composite nanometer filter energy film making have heat-resisting quantity and good acidproof, alkali resistance, its hydrophobicity better, the feature of oil resistivity, toughness, wearability, resistance to ag(e)ing.Structure is two cortex purifying of drinking water composite nanometer filtering films, and flux is large, pore-forming is even, assembles number of perforations and increases, and aperture is nanoscale.It is the composite nanometer filter membrane material of a class excellence.
Purifying of drinking water composite nanometer filtering film of the present invention, phreatic water or municipal tap water are carried out to purified treatment, remove the wherein harmful substance such as bacterium, virus, iron rust, colloid, chlorine residue, ammonia, nitrogen and organic high molecular compound, can directly drink safely, the benefit materials such as mineral matter wherein, trace element and dissolved oxygen do not destroy and run off, particularly the alkalescent of water purification water quality, very useful to maintaining human body alkalescent and health.Compare with other pure water that sell in market, the Drinking Water that adopts purifying of drinking water composite nanometer filtering film of the present invention to produce is safe and reliable, not only can remove the harmful substances such as bacterium in water, virus, iron rust, colloid, chlorine residue, ammonia, nitrogen and organic high molecular compound, can directly drink safely, and the benefit materials such as mineral matter wherein, trace element and dissolved oxygen is not destroyed and run off, water purification water quality be alkalescent, more be of value to people healthy, therefore, do not need to supplement required mineral matter etc. in addition, production cost is lower.
The specific embodiment
Fig. 2, purifying of drinking water composite nanometer filtering film of the present invention, the structure of its cross section is that film inwall A3, film supporting layer A1, compacted zone A2 and film outer wall A4 join successively.
Claims (4)
1. purifying of drinking water composite nanometer filtering film and preparation technology, is characterized in that: use polyether sulfone, polyurethane comixing for 8:2 adds a certain amount of perforating agent and solvent dimethylacetylamide to dissolution equipment, to carry out swelling in proportion; Until dissolve completely, become stoste, after filtration, make casting solution after deaeration; Spinning and aftertreatment technology: casting solution is made to purifying of drinking water composite nanometer filtering film through dry-jet wet spinning technique, air-dry, make membrane structure be fixed to finished product.
2. purifying of drinking water composite nanometer filtering film according to claim 1: it is characterized in that: the composite nanometer filtering film making has heat-resisting quantity and good acid resistance, alkali resistance, oil resistivity, toughness, wearability, resistance to ag(e)ing, flux is large, aperture is in nano level feature, is the purifying of drinking water composite nanometer filter membrane material of a class excellence.
3. purifying of drinking water composite nanometer filtering film according to claim 1: it is characterized in that: phreatic water or municipal tap water purify through purifying of drinking water composite nanometer filtering film, remove bacterium, virus, iron rust, colloid, chlorine residue, ammonia, nitrogen, organic high molecular compound harmful substance in water, can directly drink safely, and mineral matter wherein, trace element, dissolved oxygen benefit materials is not destroyed and loss feature.
4. as the purifying of drinking water composite nanometer filtering film preparation technology as described in any one in claim 1～3 and the composite nanometer filtering film of preparing, it is characterized in that: casting solution reparation technology: polyether sulfone, polyurethane comixing ratio are by 8:2, add a certain amount of pore former and solvent dimethylacetylamide to dissolution equipment to carry out swelling, until dissolve completely, become stoste, after filtration, make casting solution after deaeration; Spinning and aftertreatment technology: casting solution is made to purifying of drinking water composite nanometer filtering film through dry-jet wet spinning technique, air-dry, make membrane structure be fixed to finished product; The purifying of drinking water NF membrane making has that internal-and external diameter is adjustable, aperture nanoscale, have heat-resisting quantity and good acidproof, alkali resistance, its hydrophobicity better, the feature of oil resistivity, toughness, wearability, resistance to ag(e)ing, be the purifying of drinking water composite nanometer filter membrane material of a class excellence.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110743380A (en) * | 2019-11-12 | 2020-02-04 | 时代沃顿科技有限公司 | Preparation method of nanofiltration membrane and nanofiltration membrane prepared by same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090057225A1 (en) * | 2005-04-07 | 2009-03-05 | Bernd Krause | Filtration Membrane |
| CN101804306A (en) * | 2010-04-22 | 2010-08-18 | 吉林市金赛科技开发有限公司 | High-performance polyethersulfone separating membrane and device for recycling sewage |
| CN102019150A (en) * | 2010-12-21 | 2011-04-20 | 惠州七芯膜净化环保有限公司 | Polyether sulfone-polyurethane blend hollow fiber membrane and preparation method thereof |
-
2013
- 2013-01-29 CN CN201310032563.4A patent/CN103962019A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090057225A1 (en) * | 2005-04-07 | 2009-03-05 | Bernd Krause | Filtration Membrane |
| CN101804306A (en) * | 2010-04-22 | 2010-08-18 | 吉林市金赛科技开发有限公司 | High-performance polyethersulfone separating membrane and device for recycling sewage |
| CN102019150A (en) * | 2010-12-21 | 2011-04-20 | 惠州七芯膜净化环保有限公司 | Polyether sulfone-polyurethane blend hollow fiber membrane and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| L.T. DUARTE ET AL.,: ""Polyurethane/polyethersulphone composite hollow fibers produced by simultaneous spinning of two polymer solutions"", 《JOURNAL OF MEMBRANE SCIENCE》, vol. 311, 31 December 2008 (2008-12-31), pages 12 - 22, XP022487824, DOI: 10.1016/j.memsci.2007.11.030 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110743380A (en) * | 2019-11-12 | 2020-02-04 | 时代沃顿科技有限公司 | Preparation method of nanofiltration membrane and nanofiltration membrane prepared by same |
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Application publication date: 20140806 |