CN102728244A - Ultrafiltration membrane material with high tensile strength and preparation method thereof - Google Patents
Ultrafiltration membrane material with high tensile strength and preparation method thereof Download PDFInfo
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- CN102728244A CN102728244A CN2011100829514A CN201110082951A CN102728244A CN 102728244 A CN102728244 A CN 102728244A CN 2011100829514 A CN2011100829514 A CN 2011100829514A CN 201110082951 A CN201110082951 A CN 201110082951A CN 102728244 A CN102728244 A CN 102728244A
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Abstract
A technical scheme adopted by the invention is an ultrafiltration membrane material with high tensile strength and a preparation method thereof. The ultrafiltration membrane material comprises the following components, by weight: 15%-25% of poly(ether sulfone) (PES), 50%-60% of N-methyl pyrrolidone (NMP), 10%-15% of polyvinyl pyrrolidone (PVP) and 2%-3% of additive. The prepared ultrafiltration membrane has pressure resistance, heat resistance, high oxidation resistance, strong acid and alkaline resistance, and good biological compatibility.
Description
Technical field
The present invention relates to a kind of milipore filter material, a kind of specifically have high-tensile milipore filter material and preparation method thereof, belongs to technical field of polymer materials.
Background technology
Family surplus the university of mechanism that China is engaged in film research and development has 30 is engaged in about more than 300 families of enterprise that film is produced.In total sale of film, 50% market is occupied by reverse osmosis membrane, and ultrafiltration and micro-filtration, electrodialysis respectively account for 10%, and remaining 20% is occupied by gas separation membrane, inorganic ceramic membrane, ventilated membrane and other types.Though occupation rate of market is not very high, begin double growth at milipore filter over nearly 1 year, get into the development key phase.Along with industrial expansion, the water pollution situation is serious day by day, to water pretreatment require increasingly highly, have more and more enterprises select to use milipore filter to do preliminary treatment.
But not only price is high for existing milipore filter, flux is little, and in the process of using, receives various pollutions easily, for example adsorbs pollution, deposit fouling and biological pollution etc.All pollutions and frequent cleaning meeting cause the ultra life-span of passing through film and have a strong impact on, and make the operation energy consumption of ultrafiltration technology and the amortization charge in the operating cost increase, and then cause whole cost to increase.
Summary of the invention
To the deficiency that prior art exists, technical problem to be solved by this invention is, a kind of high-tensile milipore filter material and preparation method thereof is provided, prepared milipore filter is withstand voltage, heat-resisting, non-oxidizability is high, resistance to acids and bases is strong, good biocompatibility.
For solving the problems of the technologies described above, the technical scheme that the present invention taked is, a kind of high-tensile milipore filter material and preparation method thereof, and it comprises following parts by weight of component:: polyether sulfone (PES), 15%-25%; N-methyl pyrrolidone (NMP), 50%-60%; Polyvinylpyrrolidone (PVP), 10%-15%; Additive, 2%-3%.
Above-mentioned high-tensile milipore filter material, it comprises following parts by weight of component:: polyether sulfone (PES), 18%; N-methyl pyrrolidone (NMP), 55%; Polyvinylpyrrolidone (PVP), 10%; Additive, 2.5%.
Above-mentioned high-tensile milipore filter preparation methods comprises following content:
(1) preparation casting solution: according to formula ratio polyether sulfone (PES) and polyvinylpyrrolidone (PVP) mixing are dissolved in the N-methyl pyrrolidone (NMP), add additive, mixed liquor is heated to 60 ℃ of dissolvings, until the casting solution homogeneous transparent;
(2) deaeration: casting solution is placed the deaeration jar, under 70 ℃ of temperature conditions, stirred 1 hour, to be mixedly left standstill fully deaeration 24 hours after evenly;
(3) preparation fibril: the mixed liquor after the abundant deaeration is sent in the spinning-drawing machine; Extrude with spinning head and to form the hollow form fibril, leave standstill, treat in the fibril after the partial solvent evaporation; In the glycerite coagulating bath of immersion 2%, it is that 0.8mm, external diameter are the solid-state doughnut of 1.25mm that fibril is frozen into internal diameter;
(4) film forming: the fibril for preparing is put into ethanolic solution soak;
Said casting solution comprises following parts by weight of component: polyether sulfone (PES), 15%-25%; N-methyl pyrrolidone (NMP), 50%-60%; Polyvinylpyrrolidone (PVP), 10%-15%; Additive, 2%-3%.
The present invention is a major ingredient with polyether sulfone (PES), and polyether sulfone (PES) is the typical polymer material of preparation milipore filter, has good chemistry, calorifics stability, mechanical performance, resistance to acids and bases.N-methyl pyrrolidone (NMP) is as solvent, has avirulence, higher boiling, corrosivity is little, solubility is big, viscosity is low, volatility is low, good stability, be prone to advantages such as recovery.Polyvinylpyrrolidone (PVP) can influence milipore filter micro-structural and performance, and the polyvinylpyrrolidone (PVP) of suitable content can make the flux of polyether sulfone (PES) film increase.The mixed liquor that additive is made up of polyethylene glycol (PEG400), chlorine vinegar, lithium chloride (LiCL) and inorganic salts improves its contamination resistance and tensile strength under the prerequisite of the flux that guarantees film.
The prepared milipore filter of the present invention is withstand voltage, heat-resisting, non-oxidizability is high, and resistance to acids and bases is strong, good biocompatibility, can be widely used in environmental project, food, etc. many industries.
The specific embodiment
Embodiment 1
The high-tensile milipore filter material of present embodiment, it comprises following parts by weight of component: polyether sulfone (PES, 147 powders), 18%; N-methyl pyrrolidone (NMP), 55%; Polyvinylpyrrolidone (PVP, K30), 10%; Additive, 2.5%.
The high-tensile milipore filter preparation methods of present embodiment comprises following content:
(1) preparation casting solution: according to formula ratio polyether sulfone (PES) and polyvinylpyrrolidone (PVP) mixing are dissolved in the N-methyl pyrrolidone (NMP), add additive, mixed liquor is heated to 60 ℃ of dissolvings, until the casting solution homogeneous transparent;
(2) deaeration: casting solution is placed the deaeration jar, under 70 ℃ of temperature conditions, stirred 1 hour, to be mixedly left standstill fully deaeration 24 hours after evenly;
(3) preparation fibril: the mixed liquor after the abundant deaeration is sent in the spinning-drawing machine; Extrude with spinning head and to form the hollow form fibril, leave standstill, treat in the fibril after the partial solvent evaporation; In the glycerite coagulating bath of immersion 2%, it is that 0.8mm, external diameter are the solid-state doughnut of 1.25mm that fibril is frozen into internal diameter;
(4) film forming: the fibril for preparing is put into ethanolic solution soak.
Combination property to the high-tensile milipore filter material of present embodiment is tested, and the result sees table 1
Table 1 all-round property testing result
| ? | The viscosity of casting solution | Burst strength (MPa) | Flux/L/m2h |
| Instance 1 | 7.68 | 0.15 | 457 |
The viscosity of traditional milipore filter casting solution is approximately about 5.6, and burst strength is below the 0.1MPa, and flux can be found out by table 1 that probably at 300/ L/m2h the high-tensile milipore filter material good combination property of present embodiment has good physicochemical property.
Embodiment 2
The high-tensile milipore filter material of present embodiment, it comprises following parts by weight of component: polyether sulfone (PES, 70 powders), 18%; N-methyl pyrrolidone (NMP), 55%; Polyvinylpyrrolidone (PVP, K30), 10%; Additive, 2.5%.
The high-tensile milipore filter preparation methods of present embodiment comprises following content:
(1) preparation casting solution: according to formula ratio polyether sulfone (PES) and polyvinylpyrrolidone (PVP) mixing are dissolved in the N-methyl pyrrolidone (NMP), add additive, mixed liquor is heated to 60 ℃ of dissolvings, until the casting solution homogeneous transparent;
(2) deaeration: casting solution is placed the deaeration jar, under 70 ℃ of temperature conditions, stirred 1 hour, to be mixedly left standstill fully deaeration 24 hours after evenly;
(3) preparation fibril: the mixed liquor after the abundant deaeration is sent in the spinning-drawing machine; Extrude with spinning head and to form the hollow form fibril, leave standstill, treat in the fibril after the partial solvent evaporation; In the glycerite coagulating bath of immersion 2%, it is that 0.8mm, external diameter are the solid-state doughnut of 1.25mm that fibril is frozen into internal diameter;
(4) film forming: the fibril for preparing is put into ethanolic solution soak.
Combination property to the high-tensile milipore filter material of present embodiment is tested, and the result sees table 2
Table 2 all-round property testing result
| ? | The viscosity of casting solution | Burst strength (MPa) | Flux/L/m2h |
| Instance 2 | 1.05 | 0.1 | 323 |
The viscosity of traditional milipore filter casting solution is approximately about 5.6, and burst strength is below the 0.1MPa, and flux can be found out by table 2 that probably at 300/ L/m2h the high-tensile milipore filter material good combination property of present embodiment has good physicochemical property.
Embodiment 3
The high-tensile milipore filter material of present embodiment, it comprises following parts by weight of component: polyether sulfone (PES, 49 powders), 18%; N-methyl pyrrolidone (NMP), 55%; Polyvinylpyrrolidone (PVP, K30), 10%; Additive, 2.5%.
The high-tensile milipore filter preparation methods of present embodiment comprises following content:
(1) preparation casting solution: according to formula ratio polyether sulfone (PES) and polyvinylpyrrolidone (PVP) mixing are dissolved in the N-methyl pyrrolidone (NMP), add additive, mixed liquor is heated to 60 ℃ of dissolvings, until the casting solution homogeneous transparent;
(2) deaeration: casting solution is placed the deaeration jar, under 70 ℃ of temperature conditions, stirred 1 hour, to be mixedly left standstill fully deaeration 24 hours after evenly;
(3) preparation fibril: the mixed liquor after the abundant deaeration is sent in the spinning-drawing machine; Extrude with spinning head and to form the hollow form fibril, leave standstill, treat in the fibril after the partial solvent evaporation; In the glycerite coagulating bath of immersion 2%, it is that 0.8mm, external diameter are the solid-state doughnut of 1.25mm that fibril is frozen into internal diameter;
(4) film forming: the fibril for preparing is put into ethanolic solution soak.
Combination property to the high-tensile milipore filter material of present embodiment is tested, and the result sees table 3
Table 3 all-round property testing result
| ? | The viscosity of casting solution | Burst strength (MPa) | Flux/L/m2h |
| Instance 3 | 0.67 | 0.5 | 295 |
The viscosity of traditional milipore filter casting solution is approximately about 5.6, and burst strength is below the 0.1MPa, and flux can be found out by table 3 that probably at 300/ L/m2h the high-tensile milipore filter material good combination property of present embodiment has good physicochemical property.
Embodiment 4
The high-tensile milipore filter material of present embodiment, it comprises following parts by weight of component: polyether sulfone (PES, 147 powders), 18%; N-methyl pyrrolidone (NMP), 55%; Polyvinylpyrrolidone (PVP, K30), 10%; Additive, 2%.
The high-tensile milipore filter preparation methods of present embodiment comprises following content:
(1) preparation casting solution: according to formula ratio polyether sulfone (PES) and polyvinylpyrrolidone (PVP) mixing are dissolved in the N-methyl pyrrolidone (NMP), add additive, mixed liquor is heated to 60 ℃ of dissolvings, until the casting solution homogeneous transparent;
(2) deaeration: casting solution is placed the deaeration jar, under 70 ℃ of temperature conditions, stirred 1 hour, to be mixedly left standstill fully deaeration 24 hours after evenly;
(3) preparation fibril: the mixed liquor after the abundant deaeration is sent in the spinning-drawing machine; Extrude with spinning head and to form the hollow form fibril, leave standstill, treat in the fibril after the partial solvent evaporation; In the glycerite coagulating bath of immersion 2%, it is that 0.8mm, external diameter are the solid-state doughnut of 1.25mm that fibril is frozen into internal diameter;
(4) film forming: the fibril for preparing is put into ethanolic solution soak.
Combination property to the high-tensile milipore filter material of present embodiment is tested, and the result sees table 4
Table 4 all-round property testing result
| ? | The viscosity of casting solution | Burst strength (MPa) | Flux/L/m2h |
| Instance 4 | 6.53 | 0.6 | 376 |
The viscosity of traditional milipore filter casting solution is approximately about 5.6, and burst strength is below the 0.1MPa, and flux can be found out by table 4 that probably at 300/ L/m2h the high-tensile milipore filter material good combination property of present embodiment has good physicochemical property.
Embodiment 5
The high-tensile milipore filter material of present embodiment, it comprises following parts by weight of component: polyether sulfone (PES, 147 powders), 18%; N-methyl pyrrolidone (NMP), 55%; Polyvinylpyrrolidone (PVP, K30), 10%; Additive, 2.8%.
The high-tensile milipore filter preparation methods of present embodiment comprises following content:
(1) preparation casting solution: according to formula ratio polyether sulfone (PES) and polyvinylpyrrolidone (PVP) mixing are dissolved in the N-methyl pyrrolidone (NMP), add additive, mixed liquor is heated to 60 ℃ of dissolvings, until the casting solution homogeneous transparent;
(2) deaeration: casting solution is placed the deaeration jar, under 70 ℃ of temperature conditions, stirred 1 hour, to be mixedly left standstill fully deaeration 24 hours after evenly;
(3) preparation fibril: the mixed liquor after the abundant deaeration is sent in the spinning-drawing machine; Extrude with spinning head and to form the hollow form fibril, leave standstill, treat in the fibril after the partial solvent evaporation; In the glycerite coagulating bath of immersion 2%, it is that 0.8mm, external diameter are the solid-state doughnut of 1.25mm that fibril is frozen into internal diameter;
(4) film forming: the fibril for preparing is put into ethanolic solution soak.
Combination property to the high-tensile milipore filter material of present embodiment is tested, and the result sees table 5
Table 5 all-round property testing result
| ? | The viscosity of casting solution | Burst strength (MPa) | Flux/L/m2h |
| Instance 5 | 7.04 | 0.8 | 405 |
The viscosity of traditional milipore filter casting solution is approximately about 5.6, and burst strength is below the 0.1MPa, and flux can be found out by table 5 that probably at 300/ L/m2h the high-tensile milipore filter material good combination property of present embodiment has good physicochemical property.
Embodiment 6
The high-tensile milipore filter material of present embodiment, it comprises following parts by weight of component: polyether sulfone (PES, 147 powders), 15%; N-methyl pyrrolidone (NMP), 50%; Polyvinylpyrrolidone (PVP, K30), 10%; Additive, 2%.
The high-tensile milipore filter preparation methods of present embodiment comprises following content:
(1) preparation casting solution: according to formula ratio polyether sulfone (PES) and polyvinylpyrrolidone (PVP) mixing are dissolved in the N-methyl pyrrolidone (NMP), add additive, mixed liquor is heated to 60 ℃ of dissolvings, until the casting solution homogeneous transparent;
(2) deaeration: casting solution is placed the deaeration jar, under 70 ℃ of temperature conditions, stirred 1 hour, to be mixedly left standstill fully deaeration 24 hours after evenly;
(3) preparation fibril: the mixed liquor after the abundant deaeration is sent in the spinning-drawing machine; Extrude with spinning head and to form the hollow form fibril, leave standstill, treat in the fibril after the partial solvent evaporation; In the glycerite coagulating bath of immersion 2%, it is that 0.8mm, external diameter are the solid-state doughnut of 1.25mm that fibril is frozen into internal diameter;
(4) film forming: the fibril for preparing is put into ethanolic solution soak.
Embodiment 7
The high-tensile milipore filter material of present embodiment, it comprises following parts by weight of component: polyether sulfone (PES, 49 powders), 25%; N-methyl pyrrolidone (NMP), 60%; Polyvinylpyrrolidone (PVP, K30), 15%; Additive, 3%.
The high-tensile milipore filter preparation methods of present embodiment comprises following content:
(1) preparation casting solution: according to formula ratio polyether sulfone (PES) and polyvinylpyrrolidone (PVP) mixing are dissolved in the N-methyl pyrrolidone (NMP), add additive, mixed liquor is heated to 60 ℃ of dissolvings, until the casting solution homogeneous transparent;
(2) deaeration: casting solution is placed the deaeration jar, under 70 ℃ of temperature conditions, stirred 1 hour, to be mixedly left standstill fully deaeration 24 hours after evenly;
(3) preparation fibril: the mixed liquor after the abundant deaeration is sent in the spinning-drawing machine; Extrude with spinning head and to form the hollow form fibril, leave standstill, treat in the fibril after the partial solvent evaporation; In the glycerite coagulating bath of immersion 2%, it is that 0.8mm, external diameter are the solid-state doughnut of 1.25mm that fibril is frozen into internal diameter;
(4) film forming: the fibril for preparing is put into ethanolic solution soak.
Claims (3)
1. high-tensile milipore filter material, it comprises following parts by weight of component: polyether sulfone (PES), 15%-25%; N-methyl pyrrolidone (NMP), 50%-60%; Polyvinylpyrrolidone (PVP), 10%-15%; Additive, 2%-3%.
2. high-tensile milipore filter material according to claim 1, it comprises following parts by weight of component: polyether sulfone (PES), 18%; N-methyl pyrrolidone (NMP), 55%; Polyvinylpyrrolidone (PVP), 10%; Additive, 2.5%.
3. the described high-tensile milipore filter of claim 1 preparation methods comprises following content:
(1) preparation casting solution: according to formula ratio polyether sulfone (PES) and polyvinylpyrrolidone (PVP) mixing are dissolved in the N-methyl pyrrolidone (NMP), add additive, mixed liquor is heated to 60 ℃ of dissolvings, until the casting solution homogeneous transparent;
(2) deaeration: casting solution is placed the deaeration jar, under 70 ℃ of temperature conditions, stirred 1 hour, to be mixedly left standstill fully deaeration 24 hours after evenly;
(3) preparation fibril: the mixed liquor after the abundant deaeration is sent in the spinning-drawing machine; Extrude with spinning head and to form the hollow form fibril, leave standstill, treat in the fibril after the partial solvent evaporation; In the glycerite coagulating bath of immersion 2%, it is that 0.8mm, external diameter are the solid-state doughnut of 1.25mm that fibril is frozen into internal diameter;
(4) film forming: the fibril for preparing is put into ethanolic solution soak;
Said casting solution comprises following parts by weight of component: polyether sulfone (PES), 15%-25%; N-methyl pyrrolidone (NMP), 50%-60%; Polyvinylpyrrolidone (PVP), 10%-15%; Additive, 2%-3%.
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| CN2011100829514A CN102728244A (en) | 2011-04-02 | 2011-04-02 | Ultrafiltration membrane material with high tensile strength and preparation method thereof |
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| CN2011100829514A CN102728244A (en) | 2011-04-02 | 2011-04-02 | Ultrafiltration membrane material with high tensile strength and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017215682A1 (en) * | 2016-06-13 | 2017-12-21 | Technická univerzita v Liberci | A polymeric matrix for the preparation of membranes and a membrane made of the polymeric matrix |
| CN108043234A (en) * | 2017-12-18 | 2018-05-18 | 安徽普朗膜技术有限公司 | The preparation method of ultrafiltration membrane |
-
2011
- 2011-04-02 CN CN2011100829514A patent/CN102728244A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017215682A1 (en) * | 2016-06-13 | 2017-12-21 | Technická univerzita v Liberci | A polymeric matrix for the preparation of membranes and a membrane made of the polymeric matrix |
| CN108043234A (en) * | 2017-12-18 | 2018-05-18 | 安徽普朗膜技术有限公司 | The preparation method of ultrafiltration membrane |
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Application publication date: 20121017 |