CN105709609A - Preparation method of hollow fiber nanofiltration membrane - Google Patents
Preparation method of hollow fiber nanofiltration membrane Download PDFInfo
- Publication number
- CN105709609A CN105709609A CN201610224115.8A CN201610224115A CN105709609A CN 105709609 A CN105709609 A CN 105709609A CN 201610224115 A CN201610224115 A CN 201610224115A CN 105709609 A CN105709609 A CN 105709609A
- Authority
- CN
- China
- Prior art keywords
- hollow fiber
- whisker
- membrane
- nanofiltration membrane
- pva
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000012528 membrane Substances 0.000 title claims abstract description 71
- 239000012510 hollow fiber Substances 0.000 title claims abstract description 61
- 238000001728 nano-filtration Methods 0.000 title claims abstract description 40
- 238000002360 preparation method Methods 0.000 title abstract description 10
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 25
- GLUUGHFHXGJENI-UHFFFAOYSA-N Piperazine Chemical compound C1CNCCN1 GLUUGHFHXGJENI-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 22
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000005266 casting Methods 0.000 claims abstract description 15
- 239000007864 aqueous solution Substances 0.000 claims abstract description 13
- 239000002608 ionic liquid Substances 0.000 claims abstract description 13
- 238000012695 Interfacial polymerization Methods 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 11
- 210000004379 membrane Anatomy 0.000 claims description 9
- 229920000642 polymer Polymers 0.000 claims description 9
- IJOOHPMOJXWVHK-UHFFFAOYSA-N chlorotrimethylsilane Chemical compound C[Si](C)(C)Cl IJOOHPMOJXWVHK-UHFFFAOYSA-N 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 3
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 2
- 239000004695 Polyether sulfone Substances 0.000 claims description 2
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 2
- 210000002469 basement membrane Anatomy 0.000 claims description 2
- 239000004917 carbon fiber Substances 0.000 claims description 2
- 239000001913 cellulose Substances 0.000 claims description 2
- 229920002678 cellulose Polymers 0.000 claims description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 2
- 229920002492 poly(sulfone) Polymers 0.000 claims description 2
- 229920006393 polyether sulfone Polymers 0.000 claims description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 2
- WZCQRUWWHSTZEM-UHFFFAOYSA-N 1,3-phenylenediamine Chemical compound NC1=CC=CC(N)=C1 WZCQRUWWHSTZEM-UHFFFAOYSA-N 0.000 claims 1
- 235000012489 doughnuts Nutrition 0.000 claims 1
- 239000002904 solvent Substances 0.000 claims 1
- 238000009987 spinning Methods 0.000 claims 1
- 239000000243 solution Substances 0.000 abstract description 14
- 239000013078 crystal Substances 0.000 abstract description 3
- 239000002346 layers by function Substances 0.000 abstract description 3
- UWCPYKQBIPYOLX-UHFFFAOYSA-N benzene-1,3,5-tricarbonyl chloride Chemical compound ClC(=O)C1=CC(C(Cl)=O)=CC(C(Cl)=O)=C1 UWCPYKQBIPYOLX-UHFFFAOYSA-N 0.000 abstract 1
- 238000011065 in-situ storage Methods 0.000 abstract 1
- 230000014759 maintenance of location Effects 0.000 abstract 1
- 229920005597 polymer membrane Polymers 0.000 abstract 1
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 238000010612 desalination reaction Methods 0.000 description 11
- 230000001112 coagulating effect Effects 0.000 description 10
- 239000008367 deionised water Substances 0.000 description 10
- 229910021641 deionized water Inorganic materials 0.000 description 10
- 239000010410 layer Substances 0.000 description 10
- 238000012360 testing method Methods 0.000 description 8
- 238000007654 immersion Methods 0.000 description 5
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 230000004907 flux Effects 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 2
- 235000019341 magnesium sulphate Nutrition 0.000 description 2
- 238000001223 reverse osmosis Methods 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910021642 ultra pure water Inorganic materials 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/08—Hollow fibre membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0002—Organic membrane manufacture
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0079—Manufacture of membranes comprising organic and inorganic components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0081—After-treatment of organic or inorganic membranes
- B01D67/0093—Chemical modification
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/02—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/30—Polyalkenyl halides
- B01D71/32—Polyalkenyl halides containing fluorine atoms
- B01D71/34—Polyvinylidene fluoride
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/66—Polymers having sulfur in the main chain, with or without nitrogen, oxygen or carbon only
- B01D71/68—Polysulfones; Polyethersulfones
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2323/00—Details relating to membrane preparation
- B01D2323/02—Hydrophilization
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2323/00—Details relating to membrane preparation
- B01D2323/40—Details relating to membrane preparation in-situ membrane formation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/24—Mechanical properties, e.g. strength
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/36—Hydrophilic membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/40—Fibre reinforced membranes
Abstract
The invention discloses a method for preparing a hollow fiber nanofiltration membrane through crystal whisker doping and PVA (polyvinyl alcohol) pretreatment. The preparation method is mainly technically characterized in that crystal whiskers are added to a polymer membrane casting solution and are spun to form a hollow fiber ultrafiltration membrane, the inner (outer) surface of the hollow fiber ultrafiltration membrane is precoated with PVA and an ionic liquid aqueous solution, piperazine and trimesoyl chloride in-situ interfacial polymerization is performed on the pretreated surface, and the hollow fiber nanofiltration membrane is prepared. The hollow fiber nanofiltration membrane prepared with the method has extremely high mechanical strength, the functional layer is more compact and uniform, is combined with a base membrane more closely and is not prone to peel, and the hollow fiber nanofiltration membrane has a higher retention rate and longer service life.
Description
Technical field
The preparation method that the present invention relates to a kind of hollow fiber nanofiltration membrane, is specially the method that whisker blends and hollow fiber nanofiltration membrane is prepared in immobilization process, belongs to separation film and manufactures field.
Background technology
Nanofiltration (NF) is a kind of membrane separation technique between reverse osmosis and ultrafiltration, NF membrane can remove the granule that diameter is about 1nm, retaining relative molecular weight is 200～1000, to the removal efficiency of monovalent salt lower than 80%, the removal efficiency of divalent salts is higher than 90%, separable similar amino acid and protein, it is achieved high score is in the separation of amount and low-molecular-weight organic matter.Hollow fiber nanofiltration membrane specific surface area is big, the loading density of membrane module is high, technique is simple, easy cleaning, production cost is lower than other kinds of NF membrane, and still there is relatively high desalination performance at low pressures, thus be widely used in ultra-pure water prepare, food, chemical industry, medicine, biochemistry, environmental protection, the various concentrations in the field such as metallurgy and separation process.Hollow fiber nanofiltration membrane by hollow fiber ultrafiltration membrane and hollow fiber ultrafiltration membrane (outward) desalination layer on surface form, desalination layer is generally by the ultra-thin compacted zone that (outward) the original position interfacial polymerization on surface obtains in hollow fiber nanofiltration membrane.In the production process of hollow fiber nanofiltration membrane, the hydrophilic of desalination layer affects the uniformity and the compactness of desalination layer, thus affecting salt rejection rate and the service life of hollow fiber nanofiltration membrane.
Whisker is a kind of novel enhanced filler.A kind of fiber that whisker grows into single crystal form, its diameter very little (micron order), there is the advantages such as high intensity, high-modulus and high elongation rate.The intensity of whisker, far above other chopped strands, is mainly used as the reinforcement of composite, is used for manufacturing high strength composite.
Summary of the invention
In order to improve existing hollow fiber nanofiltration membrane desalination layer density and in uneven thickness, functional layer is easy to fall off, mechanical strength is relatively low, morphotropism is big, the shortcoming of easy fracture, the method that a kind of whisker of disclosure blends and hollow fiber nanofiltration membrane is prepared in immobilization process, it is proposed that the preparation technology of a kind of Novel hollow fiber nano filtering film.Main masking step is as follows:
(1) preparation of whisker-polymer mixed solution
Polymer, organic solvent and perforating agent are configured to polymeric casting film liquid by a certain percentage；Whisker is added in casting solution, standing and defoaming after stirring.
(2) preparation of hollow fiber ultrafiltration membrane
Casting solution containing whisker and core liquid are extruded by the shower nozzle of spinneret simultaneously after 5cm-20cm air bath, enters coagulating bath, coagulating bath stops 5s-30s and makes polymer point phase, from godet roller, take off film silk deionized water repeatedly rinse and soak 48h in deionized water, namely obtain hollow fiber ultrafiltration membrane.
(3) pretreatment of hollow fiber ultrafiltration membrane
After hollow fiber ultrafiltration membrane is dried, within it (outward) surface coating contains the aqueous solution of certain density polyvinyl alcohol (PVA) and ionic liquid, dry.
(4) preparation of hollow fiber nanofiltration membrane
In the hollow fiber ultrafiltration membrane that pretreatment is good, (outward) surface applies piperazine aqueous solution, repastes the hexane solution of deposited pyromellitic trimethylsilyl chloride, prepares hollow fiber nanofiltration membrane.
PVA and ionic liquid can reduce film tension, increase the piperazine aqueous solution adhesive force on film surface, make piperazine being more uniformly distributed in film surface distributed.It addition, PVA contains great amount of hydroxy group, can being combined formation ionic bond with some whisker, the formation of ionic bond adds the binding strength of PVA and basement membrane.After adopting PVA and ionic liquid pretreatment, in hollow fiber nanofiltration membrane, the desalination layer on (outward) surface is more fine and close, uniform, and rejection is also higher.
Described step (1), (2) whisker refer to one or more in carborundum, ramet, silicon nitride, carbon fiber, nano-cellulose whisker, it is preferred to: silicon carbide whisker.Polymer refers to one or more in polysulfones, polyether sulfone and Kynoar.
In described step (1), the concentration of whisker is 1wt%-12wt%.
In described step (3), the concentration of ionic liquid is 1wt%-10wt%；The concentration of PVA is 1wt%-10wt%.
In described step (4), hollow fiber nanofiltration membrane desalination layer is formed through original position interfacial polymerization by piperazine and pyromellitic trimethylsilyl chloride.
Compared with tradition hollow fiber nanofiltration membrane, its advantage is:
(1) addition of whisker enhances the mechanical strength of hollow fiber nanofiltration membrane；
(2) (outward) surface is after the pre-immersion of PVA and ionic liquid processes in hollow fiber nanofiltration membrane, and hydrophilic increases so that the desalination layer after interfacial polymerization is more fine and close, uniform, rejection is higher；
(3) in hollow fiber ultrafiltration membrane, (outward) surface, after the pre-immersion of PVA and ionic liquid processes, adds the binding strength of the whisker in hollow fiber ultrafiltration membrane and desalination layer, makes functional layer difficult drop-off.
Accompanying drawing explanation
Accompanying drawing (Fig. 1) is the structural representation of hollow fiber nanofiltration membrane cross section of the present invention.Wherein, 1 is hollow fiber ultrafiltration membrane cross section, and 2 is desalination layer, and 3 is whisker.
Detailed description of the invention
Below in conjunction with embodiment, the present invention program is further elaborated with.
Embodiment 1
The carborundum that concentration is 1wt% is added in polymeric casting film liquid, after dissolving deaeration, prepares the casting solution containing whisker；Casting solution containing whisker and core liquid are extruded by the shower nozzle of spinneret simultaneously after 10cm air bath, enters coagulating bath, coagulating bath stops 20s and makes polymer point phase, from godet roller, take off film silk deionized water repeatedly rinse and soak 48h in deionized water, namely obtain hollow fiber ultrafiltration membrane；Contain the ionic liquid of 5wt% and the aqueous solution of the PVA of 1wt% in the precoating of hollow fiber ultrafiltration membrane inner surface, after drying, coating piperazine aqueous solution repastes the hexane solution of deposited pyromellitic trimethylsilyl chloride, prepares hollow fiber nanofiltration membrane.
Embodiment 2
The carborundum that concentration is 5wt% is added in polymeric casting film liquid, after dissolving deaeration, prepares the casting solution containing whisker；Casting solution containing whisker and core liquid are extruded by the shower nozzle of spinneret simultaneously after 20cm air bath, enters coagulating bath, coagulating bath stops 10s and makes polymer point phase, from godet roller, take off film silk deionized water repeatedly rinse and soak 48h in deionized water, namely obtain hollow fiber ultrafiltration membrane；Contain the ionic liquid of 10wt% and the aqueous solution of the PVA of 5wt% in the precoating of hollow fiber ultrafiltration membrane inner surface, after drying, coating piperazine aqueous solution repastes the hexane solution of deposited pyromellitic trimethylsilyl chloride, prepares hollow fiber nanofiltration membrane.
Embodiment 3
The carborundum that concentration is 12wt% is added in polymeric casting film liquid, after dissolving deaeration, prepares the casting solution containing whisker；Casting solution containing whisker and core liquid are extruded by the shower nozzle of spinneret simultaneously after 5cm air bath, enters coagulating bath, coagulating bath stops 5s and makes polymer point phase, from godet roller, take off film silk deionized water repeatedly rinse and soak 48h in deionized water, namely obtain hollow fiber ultrafiltration membrane；Contain the ionic liquid of 5wt% and the aqueous solution of the PVA of 10wt% in the precoating of hollow fiber ultrafiltration membrane inner surface, after drying, coating piperazine aqueous solution repastes the hexane solution of deposited pyromellitic trimethylsilyl chloride, prepares hollow fiber nanofiltration membrane.
Matched group 1
Polymeric casting film liquid and core liquid are extruded by the shower nozzle of spinneret simultaneously after air bath, enters coagulating bath, coagulating bath stops and makes polymer point phase, from godet roller, take off film silk deionized water repeatedly rinse and soak 48h in deionized water, namely obtain hollow fiber ultrafiltration membrane；Apply piperazine aqueous solution at hollow fiber ultrafiltration membrane inner surface and repaste the hexane solution of deposited pyromellitic trimethylsilyl chloride, prepare hollow fiber nanofiltration membrane.
Small test membrane module made by the film silk of the same area that Example 1-3 and matched group 1 prepare, test: (1) test water flux, (2) test magnesium sulfate and sodium chloride rejection, (3) test hot strength.When water flux and cutoff performance test, operation pressure is 0.6MPa, and test system temperature is 25 DEG C.Experimental result is in Table 1.
The water flux of table 1 membrane module, rejection and hot strength
As shown in Table 1, under the same testing conditions, the hollow fiber nanofiltration membrane that embodiment and matched group prepare in the process of the present invention, its test water flux rate of change is 20.8%, magnesium sulfate rejection rate rate of change 4.7%, sodium chloride rejection rate of change is 27.3%, and hot strength rate of change is 30.8%.These results suggest that whisker prepared by the present invention blends and hollow fiber ultrafiltration membrane inner surface is prepared complex reverse osmosis membrane through pre-immersion process and is better than being not added with whisker and hollow fiber ultrafiltration membrane inner surface does not carry out pre-immersion and processes the hollow fiber nanofiltration membrane of preparation, alternative be not added with whisker and hollow fiber ultrafiltration membrane inner surface does not carry out pre-immersion and processes the hollow fiber nanofiltration membrane of preparation and use.
Claims (4)
1. a whisker blends the method preparing hollow fiber nanofiltration membrane with polyvinyl alcohol (PVA) pretreatment, the method is to be added by whisker in polymeric casting film liquid, adopt non-solvent phase inversion spinning hollow fiber ultrafiltration membrane, then (outward) surface in hollow-fibre membrane is precoated with the aqueous solution of PVA and the 1wt%-10wt% ionic liquid containing 1wt%-10wt%, the last original position interfacial polymerization carrying out piperazine and pyromellitic trimethylsilyl chloride on (outer) hollow-fibre membrane surface in pretreatment, obtains hollow fiber nanofiltration membrane.
2. as claimed in claim 1, a kind of whisker blends hollow fiber nanofiltration membrane, it is characterised in that containing whisker in basement membrane.Whisker refers to one or more in carborundum, ramet, silicon nitride, carbon fiber, nano-cellulose whisker, it is preferred to: silicon carbide whisker.Polymer refers to one or more in polysulfones, polyether sulfone and Kynoar.The concentration of whisker is 0.2wt%-10wt%.
3., as described in claim 1 and 2, adopt a kind of method that whisker blends and hollow fiber nanofiltration membrane is prepared in PVA pretreatment, it is characterised in that: by the aqueous solution pretreatment doughnut membrane surface containing PVA and ionic liquid.Wherein, the concentration of PVA is 1wt%-10wt%, and the concentration of ionic liquid is 1wt%-10wt%.
4. as described in claim 1 and 2, a kind of method that whisker blends and hollow fiber nanofiltration membrane is prepared in PVA pretreatment, it is characterised in that: hollow fiber nanofiltration membrane compacted zone is formed through original position interfacial polymerization by m-diaminobenzene. piperazine and pyromellitic trimethylsilyl chloride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610224115.8A CN105709609B (en) | 2016-04-07 | 2016-04-07 | A kind of preparation method of hollow fiber nanofiltration membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610224115.8A CN105709609B (en) | 2016-04-07 | 2016-04-07 | A kind of preparation method of hollow fiber nanofiltration membrane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105709609A true CN105709609A (en) | 2016-06-29 |
| CN105709609B CN105709609B (en) | 2018-09-28 |
Family
ID=56159887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610224115.8A Active CN105709609B (en) | 2016-04-07 | 2016-04-07 | A kind of preparation method of hollow fiber nanofiltration membrane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105709609B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108043227A (en) * | 2017-11-22 | 2018-05-18 | 北京新源国能科技集团股份有限公司 | A kind of preparation method of polyvinylidene fluoride NF membrane |
| CN110681269A (en) * | 2019-11-20 | 2020-01-14 | 宁波建嵘科技有限公司 | Two-stage coating heterogeneous synchronous composite membrane preparation technology and device |
| CN111054214A (en) * | 2018-10-16 | 2020-04-24 | 天津天元新材料科技有限公司 | Preparation method of composite reverse osmosis membrane |
| CN115193269A (en) * | 2021-04-14 | 2022-10-18 | 西陇科学股份有限公司 | Preparation method of high-flux fine hollow fiber nanofiltration membrane for purifying drinking water |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101524626A (en) * | 2008-03-07 | 2009-09-09 | 浙江欧美环境工程有限公司 | External pressure type hollow fiber nano filtering film and preparation method thereof |
| CN103041713A (en) * | 2013-01-28 | 2013-04-17 | 天津膜天膜科技股份有限公司 | Preparation method of hollow fiber nanofiltration membrane |
| CN103240008A (en) * | 2012-02-08 | 2013-08-14 | 沃盛环保科技（上海）有限公司 | Whisker reinforced polyvinylidene fluoride hollow fiber film and preparation technology thereof |
-
2016
- 2016-04-07 CN CN201610224115.8A patent/CN105709609B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101524626A (en) * | 2008-03-07 | 2009-09-09 | 浙江欧美环境工程有限公司 | External pressure type hollow fiber nano filtering film and preparation method thereof |
| CN103240008A (en) * | 2012-02-08 | 2013-08-14 | 沃盛环保科技（上海）有限公司 | Whisker reinforced polyvinylidene fluoride hollow fiber film and preparation technology thereof |
| CN103041713A (en) * | 2013-01-28 | 2013-04-17 | 天津膜天膜科技股份有限公司 | Preparation method of hollow fiber nanofiltration membrane |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108043227A (en) * | 2017-11-22 | 2018-05-18 | 北京新源国能科技集团股份有限公司 | A kind of preparation method of polyvinylidene fluoride NF membrane |
| CN108043227B (en) * | 2017-11-22 | 2021-03-30 | 北京新源国能科技集团股份有限公司 | Preparation method of polyvinylidene fluoride nanofiltration membrane |
| CN111054214A (en) * | 2018-10-16 | 2020-04-24 | 天津天元新材料科技有限公司 | Preparation method of composite reverse osmosis membrane |
| CN110681269A (en) * | 2019-11-20 | 2020-01-14 | 宁波建嵘科技有限公司 | Two-stage coating heterogeneous synchronous composite membrane preparation technology and device |
| CN115193269A (en) * | 2021-04-14 | 2022-10-18 | 西陇科学股份有限公司 | Preparation method of high-flux fine hollow fiber nanofiltration membrane for purifying drinking water |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105709609B (en) | 2018-09-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105435653B (en) | A kind of composite nanometer filtering film to divalent ion removing with high selectivity and preparation method thereof | |
| CN110449048B (en) | Nanofiltration membrane, preparation method and dye separation method | |
| US20080197071A1 (en) | Nano Composite Hollow Fiber Membrane and Method of Manufacturing the Same | |
| CN105709609A (en) | Preparation method of hollow fiber nanofiltration membrane | |
| WO2007064123A1 (en) | A braid-reinforced composite hollow fiber membrane | |
| CN106731897B (en) | High-pollution-resistance polyvinylidene fluoride hollow fiber ultrafiltration membrane, and preparation method and device thereof | |
| CN102824859B (en) | Method for preparing hollow fiber nanofiltration membrane by using thermally induced phase separation/interface cross linking synchronization method | |
| Tsai et al. | Pervaporation of water/alcohol mixtures through chitosan/cellulose acetate composite hollow‐fiber membranes | |
| Tsai et al. | Study on the pervaporation performance and long-term stability of aqueous iso-propanol solution through chitosan/polyacrylonitrile hollow fiber membrane | |
| CN105879700A (en) | Preparation method of whisker-blended composite reverse osmosis membrane | |
| CN113019146A (en) | Preparation method of ultrahigh-flux composite nanofiltration membrane | |
| CN111298664B (en) | Hollow fiber gas separation composite membrane and preparation method thereof | |
| Cheraghali et al. | Enhanced modification technique for polyacrylonitrile UF membranes by direct hydrolysis in the immersion bath | |
| CN107486041B (en) | Ultra-low pressure composite reverse osmosis membrane and preparation method thereof | |
| Tsai et al. | Study of the separation properties of chitosan/polysulfone composite hollow-fiber membranes | |
| CN104826501A (en) | High peel strength vinyl polyvinylidene fluoride hollow fiber composite membrane preparation process | |
| Nazri et al. | Improving water permeability and anti-fouling property of polyacrylonitrile-based hollow fiber ultrafiltration membranes by surface modification with polyacrylonitrile-g-poly (vinyl alcohol) graft copolymer | |
| CN103495348A (en) | Polyvinyl chloride hollow fiber ultrafiltration membrane and preparation method thereof | |
| CN113144912B (en) | Preparation method of high-flux covalent organic framework nanofiltration membrane based on TFC structure | |
| CN106890571A (en) | A kind of preparation method of organic tubular nanofiltration membrane | |
| CN108479432A (en) | A kind of preparation method of hydrophily phenolphthalein polyether sulfone composite nano fiber ultrafiltration membrane | |
| CN110833768B (en) | Double-layer polyamide solvent-resistant nanofiltration membrane containing beta-CD @ ZIF-8 nanoparticles and preparation method thereof | |
| CN111298666A (en) | Hollow fiber forward osmosis composite membrane containing oriented carbon nanotubes and preparation method thereof | |
| CN114405291B (en) | Preparation method of nanofiber forward osmosis composite membrane | |
| KR20200075347A (en) | Hollow fiber type nanofiltration membrane module having high salt rejection and manufacturing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| DD01 | Delivery of document by public notice |
Addressee: Yu Tian Document name: Notification of Acceptance of Patent Application |
|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 300382 Room 305, 4 tower, Hai Lan De building, 35, Xuefu Industrial Zone, Xiqing, Tianjin. Applicant after: Technology University (Tianjin) New Material Technology Co.,Ltd. Address before: 300382 Room 305, 4 tower, Hai Lan De building, 35, Xuefu Industrial Zone, Xiqing, Tianjin. Applicant before: TIANJIN LONGYUAN NEW MATERIAL TECHNOLOGY Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 300382 Room 305, 4 tower, Hai Lan De building, 35, Xuefu Industrial Zone, Xiqing, Tianjin. Applicant after: TIANJIN TIANGONG NEW MATERIAL TECHNOLOGY Co.,Ltd. Address before: 300382 Room 305, 4 tower, Hai Lan De building, 35, Xuefu Industrial Zone, Xiqing, Tianjin. Applicant before: Technology University (Tianjin) New Material Technology Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 300382, Room 305, building 4, Hoi Tak mansion, No. 35, wisdom road, Tianjin, Xiqing Patentee after: Tianjin Tianyuan New Material Technology Co.,Ltd. Address before: 300382, Room 305, building 4, Hoi Tak mansion, No. 35, wisdom road, Tianjin, Xiqing Patentee before: TIANJIN TIANGONG NEW MATERIAL TECHNOLOGY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240227 Address after: Room 1305, Building B, No. 19 Beiyuan East Road, Chaoyang District, Beijing, 100012 Patentee after: Xu Jiawang Country or region after: China Address before: 300382 Room 305, 4 tower, Hai Lan De building, 35, Xuefu Industrial Zone, Xiqing, Tianjin. Patentee before: Tianjin Tianyuan New Material Technology Co.,Ltd. Country or region before: China |
|
| TR01 | Transfer of patent right |