CN109289541A - A kind of preparation method of organic forward osmosis membrane - Google Patents
A kind of preparation method of organic forward osmosis membrane Download PDFInfo
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- CN109289541A CN109289541A CN201811316613.0A CN201811316613A CN109289541A CN 109289541 A CN109289541 A CN 109289541A CN 201811316613 A CN201811316613 A CN 201811316613A CN 109289541 A CN109289541 A CN 109289541A
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- 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
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/002—Forward osmosis or direct osmosis
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- 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
- B01D71/58—Other polymers having nitrogen in the main chain, with or without oxygen or carbon only
- B01D71/62—Polycondensates having nitrogen-containing heterocyclic rings in the main chain
- B01D71/64—Polyimides; Polyamide-imides; Polyester-imides; Polyamide acids or similar polyimide precursors
-
- 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
- B01D2325/48—Antimicrobial properties
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- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Manufacturing & Machinery (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a kind of preparation methods of organic forward osmosis membrane, include the following steps: to weigh polyimide resin and cellulose triacetate in proportion, and it is mixed evenly, and organic mixed solvent is placed in 40-50 degrees Celsius of gnotobasis, then mixture is added thereto, and 30-45min is stood in the state of mixing, first mixed liquor and the second mixed liquor are placed in vibrating screen mixer simultaneously, and 16-19h is mixed under conditions of 30 degrees Celsius, after the completion, uniformly sprinkling defoaming agent carries out defoaming treatment thereto, third mixed liquor is homogeneously disposed in substrate surface, substrate with counterdie is put into 36-42 degrees Celsius of water-bath and is formed a film, and standing time is 30-45s, then 70-85 degrees Celsius of gnotobasis is placed it in Middle drying.Invention significantly improves the hydrophilies of film, reduce interior concentration polarization, improve permeation flux, remain high rejection.
Description
Technical field
The present invention relates to forward osmosis membrane preparation technical field more particularly to a kind of preparation methods of organic forward osmosis membrane.
Background technique
Positive infiltration refer to water from higher water chemistry gesture (or compared with Hyposmolality) side region by permselectivity membrane flow to compared with
The process of low water chemistry gesture (or compared with hyperosmosis)-side region.Two kinds of tools are placed respectively in the two sides with permselectivity membrane
There is the solution of different osmotic, it is a kind of for the material liquid compared with Hyposmolality, another kind is with the driving compared with hyperosmosis
Solution, the permeable pressure head that positive infiltration exactly applies film two sides solution just allow the water to spontaneously as driving force from material liquid
Side reaches driving liquid-side through permselectivity membrane.It is less than permeable pressure head when applying one to the high side solution of osmotic pressure
Impressed pressure when, water still can from the hydraulic effluent of raw material to driving liquid side, this process be called pressure damping infiltration.Pressure
The driving force of damping infiltration is still osmotic pressure, therefore it is also a kind of positive process of osmosis.In the process, permeable membrane have to
Important role is closed, and in the prior art, the hydrophily of organic forward osmosis membrane is poor, and interior concentration polarization is big, and permeation flux is small, retention
Rate is low and antibiotic property is poor, film strength is not high, actual use it is ineffective.For this purpose, we have proposed a kind of organic positive infiltrations
The preparation method of film.
Summary of the invention
The invention proposes a kind of preparation methods of organic forward osmosis membrane, to solve mentioned above in the background art ask
Topic.
The invention proposes a kind of preparation methods of organic forward osmosis membrane, include the following steps:
S1: raw material is chosen, and the formula of raw material by weight is as follows: 40-55 parts of polyimide resin, cellulose triacetate 18-24
Part, mixed solvent 18-24 parts organic, 6-9 parts of polyethylene glycol, 6-9 parts of polyether sulfone polymer, 12-15 parts of auxiliary agent；
S2: weighing polyimide resin and cellulose triacetate in proportion, and be mixed evenly, and forms mixing
Object chooses organic mixed solvent again, and organic mixed solvent is placed in 40-50 degrees Celsius of gnotobasis, then to it
Middle addition mixture, and organic mixed solvent is mixed in real time during addition；
S3: after the completion of adding in S2, temperature therein is increased 50-60 degrees Celsius, and stand in the state of mixing
30-45min, and revolving speed is that 80-110 turns/min, temperature is then being reduced to 40-46 degrees Celsius, again in mixing
50-60min is stood under state, so as to obtain the first mixed liquor；
S4: the auxiliary agent in S1 is placed in stirring container, and is mixed in 40-50 degrees Celsius of environment, same with this
When, the mixture of both polyethylene glycol and polyether sulfone polymer is slowly positioned at wherein, after the completion of addition, is mixed in the condition
30-60min is stirred, to obtain the second mixed liquor；
S5: the first mixed liquor in S3 and the second mixed liquor in S4 are placed in vibrating screen mixer simultaneously, and taken the photograph 30
16-19h is mixed under conditions of family name's degree, after the completion, uniformly sprinkling defoaming agent progress defoaming treatment obtains after the completion thereto
To third mixed liquor；
S6: the requirement according to reality to film thickness, length and width is chosen shaping substrate, and is uniformly smeared in substrate surface
Third mixed liquor is homogeneously disposed in substrate surface after its drying by remover, then uniformly scrapes the shape on substrate using scraper
At counterdie；
S7: the substrate with counterdie being put into 36-42 degrees Celsius of water-bath and is formed a film, and standing time is 30-45s, then will
It is placed in 70-85 degrees Celsius of gnotobasis and dries, and after the completion, removes the impurity on its surface, after the assay was approved to get to having
Machine forward osmosis membrane.
Preferably, organic mixed solvent is that the mixing of acetic acid, sodium chloride, polyethylene glycol and amine hydrochlorate class is molten
Liquid, and acetic acid, sodium chloride, polyethylene glycol and amine hydrochlorate class weight ratio be 2:1:1:4.
Preferably, the auxiliary agent is the mixing of binder, film forming agent, aluminum aluminum sulfate solvent, fire retardant and curing agent
Object, and binder, film forming agent, aluminum aluminum sulfate solvent, fire retardant and curing agent weight ratio be 3:1:2:0.5:0.5.
Preferably, in the preparation, the water content in total of used raw material need to be guaranteed lower than 5%.
Preferably, the substrate is specially metal plate, glass plate, is cast one kind in plate.
Preferably, in S6, it need to guarantee that third mixed liquor is maintained between 30-45ml/s in the flow velocity on substrate.
A kind of preparation method of organic forward osmosis membrane proposed by the present invention, beneficial effect are: organic forward osmosis membrane
Organic forward osmosis membrane made by preparation method not only significantly improves the hydrophily of film, reduces interior concentration polarization, improves and seeps
Saturating flux remains high rejection, dramatically increases anti-microbial property and due to nanometer particle size, also enhances film strength, so that
It is more efficient in actual use, meets the demand developed now.
Specific embodiment
It is next combined with specific embodiments below that the present invention will be further described.
Embodiment 1
The invention proposes a kind of preparation methods of organic forward osmosis membrane, include the following steps:
S1: raw material is chosen, and the formula of raw material by weight is as follows: 40 parts of polyimide resin, 18 parts of cellulose triacetate, organic
18 parts of mixed solvent, 6 parts of polyethylene glycol, 6 parts of polyether sulfone polymer, 12 parts of auxiliary agent；
S2: weighing polyimide resin and cellulose triacetate in proportion, and be mixed evenly, and forms mixing
Object chooses organic mixed solvent again, and organic mixed solvent is placed in 40 degrees Celsius of gnotobasis, then adds thereto
Add mixture, and organic mixed solvent is mixed in real time during addition；
S3: after the completion of adding in S2, temperature therein is increased 50 degrees Celsius, and stand in the state of mixing
30min, and revolving speed is that 80-110 turns/min, temperature is then being reduced to 40 degrees Celsius, again in the state of mixing
50min is stood, so as to obtain the first mixed liquor；
S4: the auxiliary agent in S1 is placed in stirring container, and is mixed in 40 degrees Celsius of environment, at the same time,
The mixture of both polyethylene glycol and polyether sulfone polymer is slowly positioned at wherein, after the completion of addition, is stirred in condition mixing
30min is mixed, to obtain the second mixed liquor；
S5: the first mixed liquor in S3 and the second mixed liquor in S4 are placed in vibrating screen mixer simultaneously, and taken the photograph 30
16h is mixed under conditions of family name's degree, after the completion, uniformly sprinkling defoaming agent carries out defoaming treatment thereto, after the completion, obtains the
Three mixed liquors；
S6: the requirement according to reality to film thickness, length and width is chosen shaping substrate, and is uniformly smeared in substrate surface
Third mixed liquor is homogeneously disposed in substrate surface after its drying by remover, then uniformly scrapes the shape on substrate using scraper
At counterdie；
S7: the substrate with counterdie being put into the water-bath of 36 degrees Celsius and is formed a film, and standing time is 30s, is then placed it in
Dried in 70 degrees Celsius of gnotobasis, after the completion, remove the impurity on its surface, after the assay was approved to get arrive organic positive infiltration
Film.
Organic mixed solvent be acetic acid, sodium chloride, polyethylene glycol and amine hydrochlorate class mixed solution, and second
Acid, sodium chloride, polyethylene glycol and amine hydrochlorate class weight ratio be 2:1:1:4.
The auxiliary agent is the mixture of binder, film forming agent, aluminum aluminum sulfate solvent, fire retardant and curing agent, and viscous
The weight ratio for tying agent, film forming agent, aluminum aluminum sulfate solvent, fire retardant and curing agent is 3:1:2:0.5:0.5.
In the preparation, the water content in total of used raw material need to be guaranteed lower than 5%.
Preferably, the substrate is specially metal plate, glass plate, is cast one kind in plate.
In S6, it need to guarantee that third mixed liquor is maintained between 30-45ml/s in the flow velocity on substrate.
Embodiment 2
The invention proposes a kind of preparation methods of organic forward osmosis membrane, include the following steps:
S1: raw material is chosen, and the formula of raw material by weight is as follows: 45 parts of polyimide resin, 20 parts of cellulose triacetate, organic
20 parts of mixed solvent, 7 parts of polyethylene glycol, 7 parts of polyether sulfone polymer, 13 parts of auxiliary agent；
S2: weighing polyimide resin and cellulose triacetate in proportion, and be mixed evenly, and forms mixing
Object chooses organic mixed solvent again, and organic mixed solvent is placed in 43 degrees Celsius of gnotobasis, then adds thereto
Add mixture, and organic mixed solvent is mixed in real time during addition；
S3: after the completion of adding in S2, temperature therein is increased 53 degrees Celsius, and stand in the state of mixing
35min, and revolving speed is that 80-110 turns/min, temperature is then being reduced to 42 degrees Celsius, again in the state of mixing
53min is stood, so as to obtain the first mixed liquor；
S4: the auxiliary agent in S1 is placed in stirring container, and is mixed in 43 degrees Celsius of environment, at the same time,
The mixture of both polyethylene glycol and polyether sulfone polymer is slowly positioned at wherein, after the completion of addition, is stirred in condition mixing
40min is mixed, to obtain the second mixed liquor；
S5: the first mixed liquor in S3 and the second mixed liquor in S4 are placed in vibrating screen mixer simultaneously, and taken the photograph 30
17h is mixed under conditions of family name's degree, after the completion, uniformly sprinkling defoaming agent carries out defoaming treatment thereto, after the completion, obtains the
Three mixed liquors；
S6: the requirement according to reality to film thickness, length and width is chosen shaping substrate, and is uniformly smeared in substrate surface
Third mixed liquor is homogeneously disposed in substrate surface after its drying by remover, then uniformly scrapes the shape on substrate using scraper
At counterdie；
S7: the substrate with counterdie being put into 38 degrees Celsius of water-bath and is formed a film, and standing time is 35s, is then placed it in
Dried in 75 degrees Celsius of gnotobasis, after the completion, remove the impurity on its surface, after the assay was approved to get arrive organic positive infiltration
Film.
Organic mixed solvent be acetic acid, sodium chloride, polyethylene glycol and amine hydrochlorate class mixed solution, and second
Acid, sodium chloride, polyethylene glycol and amine hydrochlorate class weight ratio be 2:1:1:4.
The auxiliary agent is the mixture of binder, film forming agent, aluminum aluminum sulfate solvent, fire retardant and curing agent, and viscous
The weight ratio for tying agent, film forming agent, aluminum aluminum sulfate solvent, fire retardant and curing agent is 3:1:2:0.5:0.5.
In the preparation, the water content in total of used raw material need to be guaranteed lower than 5%.
Preferably, the substrate is specially metal plate, glass plate, is cast one kind in plate.
In S6, it need to guarantee that third mixed liquor is maintained between 30-45ml/s in the flow velocity on substrate.
Embodiment 3
The invention proposes a kind of preparation methods of organic forward osmosis membrane, include the following steps:
S1: raw material is chosen, and the formula of raw material by weight is as follows: 50 parts of polyimide resin, 22 parts of cellulose triacetate, organic
22 parts of mixed solvent, 8 parts of polyethylene glycol, 8 parts of polyether sulfone polymer, 14 parts of auxiliary agent；
S2: weighing polyimide resin and cellulose triacetate in proportion, and be mixed evenly, and forms mixing
Object chooses organic mixed solvent again, and organic mixed solvent is placed in 47 degrees Celsius of gnotobasis, then adds thereto
Add mixture, and organic mixed solvent is mixed in real time during addition；
S3: after the completion of adding in S2, temperature therein is increased 57 degrees Celsius, and stand in the state of mixing
40min, and revolving speed is that 80-110 turns/min, temperature is then being reduced to 44 degrees Celsius, again in the state of mixing
57min is stood, so as to obtain the first mixed liquor；
S4: the auxiliary agent in S1 is placed in stirring container, and is mixed in 47 degrees Celsius of environment, at the same time,
The mixture of both polyethylene glycol and polyether sulfone polymer is slowly positioned at wherein, after the completion of addition, is stirred in condition mixing
50min is mixed, to obtain the second mixed liquor；
S5: the first mixed liquor in S3 and the second mixed liquor in S4 are placed in vibrating screen mixer simultaneously, and taken the photograph 30
18h is mixed under conditions of family name's degree, after the completion, uniformly sprinkling defoaming agent carries out defoaming treatment thereto, after the completion, obtains the
Three mixed liquors；
S6: the requirement according to reality to film thickness, length and width is chosen shaping substrate, and is uniformly smeared in substrate surface
Third mixed liquor is homogeneously disposed in substrate surface after its drying by remover, then uniformly scrapes the shape on substrate using scraper
At counterdie；
S7: the substrate with counterdie being put into 40 degrees Celsius of water-bath and is formed a film, and standing time is 40s, is then placed it in
Dried in 80 degrees Celsius of gnotobasis, after the completion, remove the impurity on its surface, after the assay was approved to get arrive organic positive infiltration
Film.
Organic mixed solvent be acetic acid, sodium chloride, polyethylene glycol and amine hydrochlorate class mixed solution, and second
Acid, sodium chloride, polyethylene glycol and amine hydrochlorate class weight ratio be 2:1:1:4.
The auxiliary agent is the mixture of binder, film forming agent, aluminum aluminum sulfate solvent, fire retardant and curing agent, and viscous
The weight ratio for tying agent, film forming agent, aluminum aluminum sulfate solvent, fire retardant and curing agent is 3:1:2:0.5:0.5.
In the preparation, the water content in total of used raw material need to be guaranteed lower than 5%.
Preferably, the substrate is specially metal plate, glass plate, is cast one kind in plate.
In S6, it need to guarantee that third mixed liquor is maintained between 30-45ml/s in the flow velocity on substrate.
Embodiment 4
The invention proposes a kind of preparation methods of organic forward osmosis membrane, include the following steps:
S1: raw material is chosen, and the formula of raw material by weight is as follows: 55 parts of polyimide resin, 24 parts of cellulose triacetate, organic
24 parts of mixed solvent, 9 parts of polyethylene glycol, 9 parts of polyether sulfone polymer, 15 parts of auxiliary agent；
S2: weighing polyimide resin and cellulose triacetate in proportion, and be mixed evenly, and forms mixing
Object chooses organic mixed solvent again, and organic mixed solvent is placed in 50 degrees Celsius of gnotobasis, then adds thereto
Add mixture, and organic mixed solvent is mixed in real time during addition；
S3: after the completion of adding in S2, temperature therein is increased 60 degrees Celsius, and stand in the state of mixing
45min, and revolving speed is that 80-110 turns/min, temperature is then being reduced to 46 degrees Celsius, again in the state of mixing
60min is stood, so as to obtain the first mixed liquor；
S4: the auxiliary agent in S1 is placed in stirring container, and is mixed in 50 degrees Celsius of environment, at the same time,
The mixture of both polyethylene glycol and polyether sulfone polymer is slowly positioned at wherein, after the completion of addition, is stirred in condition mixing
60min is mixed, to obtain the second mixed liquor；
S5: the first mixed liquor in S3 and the second mixed liquor in S4 are placed in vibrating screen mixer simultaneously, and taken the photograph 30
19h is mixed under conditions of family name's degree, after the completion, uniformly sprinkling defoaming agent carries out defoaming treatment thereto, after the completion, obtains the
Three mixed liquors；
S6: the requirement according to reality to film thickness, length and width is chosen shaping substrate, and is uniformly smeared in substrate surface
Third mixed liquor is homogeneously disposed in substrate surface after its drying by remover, then uniformly scrapes the shape on substrate using scraper
At counterdie；
S7: the substrate with counterdie being put into 42 degrees Celsius of water-bath and is formed a film, and standing time is 45s, is then placed it in
Dried in 85 degrees Celsius of gnotobasis, after the completion, remove the impurity on its surface, after the assay was approved to get arrive organic positive infiltration
Film.
Organic mixed solvent be acetic acid, sodium chloride, polyethylene glycol and amine hydrochlorate class mixed solution, and second
Acid, sodium chloride, polyethylene glycol and amine hydrochlorate class weight ratio be 2:1:1:4.
The auxiliary agent is the mixture of binder, film forming agent, aluminum aluminum sulfate solvent, fire retardant and curing agent, and viscous
The weight ratio for tying agent, film forming agent, aluminum aluminum sulfate solvent, fire retardant and curing agent is 3:1:2:0.5:0.5.
In the preparation, the water content in total of used raw material need to be guaranteed lower than 5%.
Preferably, the substrate is specially metal plate, glass plate, is cast one kind in plate.
In S6, it need to guarantee that third mixed liquor is maintained between 30-45ml/s in the flow velocity on substrate.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (6)
1. a kind of preparation method of organic forward osmosis membrane, which comprises the following steps:
S1: raw material is chosen, and the formula of raw material by weight is as follows: 40-55 parts of polyimide resin, cellulose triacetate 18-24
Part, mixed solvent 18-24 parts organic, 6-9 parts of polyethylene glycol, 6-9 parts of polyether sulfone polymer, 12-15 parts of auxiliary agent；
S2: weighing polyimide resin and cellulose triacetate in proportion, and be mixed evenly, and forms mixing
Object chooses organic mixed solvent again, and organic mixed solvent is placed in 40-50 degrees Celsius of gnotobasis, then to it
Middle addition mixture, and organic mixed solvent is mixed in real time during addition；
S3: after the completion of adding in S2, temperature therein is increased 50-60 degrees Celsius, and stand in the state of mixing
30-45min, and revolving speed is that 80-110 turns/min, temperature is then being reduced to 40-46 degrees Celsius, again in mixing
50-60min is stood under state, so as to obtain the first mixed liquor；
S4: the auxiliary agent in S1 is placed in stirring container, and is mixed in 40-50 degrees Celsius of environment, same with this
When, the mixture of both polyethylene glycol and polyether sulfone polymer is slowly positioned at wherein, after the completion of addition, is mixed in the condition
30-60min is stirred, to obtain the second mixed liquor；
S5: the first mixed liquor in S3 and the second mixed liquor in S4 are placed in vibrating screen mixer simultaneously, and taken the photograph 30
16-19h is mixed under conditions of family name's degree, after the completion, uniformly sprinkling defoaming agent progress defoaming treatment obtains after the completion thereto
To third mixed liquor；
S6: the requirement according to reality to film thickness, length and width is chosen shaping substrate, and is uniformly smeared in substrate surface
Third mixed liquor is homogeneously disposed in substrate surface after its drying by remover, then uniformly scrapes the shape on substrate using scraper
At counterdie；
S7: the substrate with counterdie being put into 36-42 degrees Celsius of water-bath and is formed a film, and standing time is 30-45s, then will
It is placed in 70-85 degrees Celsius of gnotobasis and dries, and after the completion, removes the impurity on its surface, after the assay was approved to get to having
Machine forward osmosis membrane.
2. a kind of preparation method of organic forward osmosis membrane according to claim 1, it is characterised in that: organic mixing
Solvent be acetic acid, sodium chloride, polyethylene glycol and amine hydrochlorate class mixed solution, and acetic acid, sodium chloride, polyethylene glycol and
The weight ratio of amine hydrochlorate class is 2:1:1:4.
3. a kind of preparation method of organic forward osmosis membrane according to claim 1, it is characterised in that: the auxiliary agent is viscous
The mixture of agent, film forming agent, aluminum aluminum sulfate solvent, fire retardant and curing agent is tied, and binder, film forming agent, aluminum aluminum sulfate are molten
The weight ratio of agent, fire retardant and curing agent is 3:1:2:0.5:0.5.
4. a kind of preparation method of organic forward osmosis membrane according to claim 1, it is characterised in that: in the preparation, need to protect
The water content in total for demonstrate,proving used raw material is lower than 5%.
5. a kind of preparation method of organic forward osmosis membrane according to claim 1, it is characterised in that: the substrate is specific
It is a kind of in metal plate, glass plate, curtain coating plate.
6. a kind of preparation method of organic forward osmosis membrane according to claim 1, it is characterised in that: in S6, need to guarantee
Third mixed liquor is maintained between 30-45ml/s in the flow velocity on substrate.
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| CN101773789A (en) * | 2010-03-23 | 2010-07-14 | 何涛 | Hydrophilic film material and preparation method thereof |
| CN101947416A (en) * | 2010-09-16 | 2011-01-19 | 华南理工大学 | High-selectivity asymmetric moisture-permeable film as well as preparation method and application thereof |
| WO2012149141A1 (en) * | 2011-04-26 | 2012-11-01 | The Regents Of The University Of California | Forward osmosis membrane with blended polymeric support |
| CN102921307A (en) * | 2012-11-13 | 2013-02-13 | 哈尔滨工业大学 | Preparation method of high-performance forward osmosis membrane |
| CN103304088A (en) * | 2013-03-12 | 2013-09-18 | 何涛 | Recycling method of high brine waste water based on forward osmosis |
| KR20140059755A (en) * | 2011-04-29 | 2014-05-16 | 바스프 에스이 | Composite membranes comprising a sulfonated polyarylether and their use in forward osmosis processes |
| CN103816811A (en) * | 2014-02-26 | 2014-05-28 | 宁波莲华环保科技股份有限公司 | Preparation method of organic forward-osmosis membrane |
-
2018
- 2018-11-07 CN CN201811316613.0A patent/CN109289541A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101773789A (en) * | 2010-03-23 | 2010-07-14 | 何涛 | Hydrophilic film material and preparation method thereof |
| CN101947416A (en) * | 2010-09-16 | 2011-01-19 | 华南理工大学 | High-selectivity asymmetric moisture-permeable film as well as preparation method and application thereof |
| WO2012149141A1 (en) * | 2011-04-26 | 2012-11-01 | The Regents Of The University Of California | Forward osmosis membrane with blended polymeric support |
| KR20140059755A (en) * | 2011-04-29 | 2014-05-16 | 바스프 에스이 | Composite membranes comprising a sulfonated polyarylether and their use in forward osmosis processes |
| CN102921307A (en) * | 2012-11-13 | 2013-02-13 | 哈尔滨工业大学 | Preparation method of high-performance forward osmosis membrane |
| CN103304088A (en) * | 2013-03-12 | 2013-09-18 | 何涛 | Recycling method of high brine waste water based on forward osmosis |
| CN103816811A (en) * | 2014-02-26 | 2014-05-28 | 宁波莲华环保科技股份有限公司 | Preparation method of organic forward-osmosis membrane |
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Application publication date: 20190201 |