CN106943902A - Ester modified polyamide reverse osmosis composite film of a kind of silicic acid and preparation method thereof - Google Patents
Ester modified polyamide reverse osmosis composite film of a kind of silicic acid and preparation method thereof Download PDFInfo
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- CN106943902A CN106943902A CN201710247555.XA CN201710247555A CN106943902A CN 106943902 A CN106943902 A CN 106943902A CN 201710247555 A CN201710247555 A CN 201710247555A CN 106943902 A CN106943902 A CN 106943902A
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- 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
- B01D71/76—Macromolecular material not specifically provided for in a single one of groups B01D71/08 - B01D71/74
- B01D71/82—Macromolecular material not specifically provided for in a single one of groups B01D71/08 - B01D71/74 characterised by the presence of specified groups, e.g. introduced by chemical after-treatment
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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
- B01D67/0006—Organic membrane manufacture by chemical reactions
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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
- B01D69/12—Composite membranes; Ultra-thin membranes
- B01D69/125—In situ manufacturing by polymerisation, polycondensation, cross-linking or chemical reaction
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- 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
- B01D71/56—Polyamides, e.g. polyester-amides
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- 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
- B01D71/70—Polymers having silicon in the main chain, with or without sulfur, nitrogen, oxygen or carbon only
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Abstract
The invention provides a kind of method of use esters of silicon acis modified polyamide reverse osmosis composite membrane, its preparation method includes：The aqueous phase solution containing aromatic polyvalent amine compound is poured on polysulphone super-filter membrane support layer surface first, the organic phase solution containing appropriate aromatic series acyl chlorides is submerged into film surface after draining to contact with aqueous phase, contain appropriate esters of silicon acis wherein in organic phase or aqueous phase, interface polymerization reaction is carried out under esters of silicon acis subsidiary conditions and obtains polyamide active layer, through Overheating Treatment, that is, obtain modified polyamide reverse osmosis composite film.On the one hand esters of silicon acis adjusts membrane structure in interfacial polymerization process as cosolvent, on the other hand as silicon source, and hydrolytic polymerization generation nano SiO 2 particle is doped in polyamide separating layer in interfacial polymerization and last handling process.The method of esters of silicon acis assistant interface polymerization combines the advantage of cosolvent and inorganic nano-particle.The present invention is polymerize by esters of silicon acis assistant interface, is prepared for the reverse osmosis composite membrane of the high salt-stopping rate of high water flux.
Description
Technical field
The present invention relates to reverse osmosis composite membrane field, and in particular to the preparation of esters of silicon acis modified polyamide reverse osmosis composite membrane
Method.
Background technology
With the fast development of global economy, the shortage of water resources problem in worldwide is increasingly highlighted.Data display,
The situation that 50 areas will appear from water resource extremely shortage with country is close on to 2025, is related to population 1,400,000,000, is concentrated mainly on not
Developed regions.And arrive 2035, this scale will continue to expand, and estimate that the normal life of nearly 3,000,000,000 people will be unable to ensure with water.
Seawater or brackish water desalination are to solve one of weary important channel of the serious plaque of water resource.In recent years, developed country in the world is not
The research direction of desalinization embrane method has been turned into about with ground.Counter-infiltration as realizing one of industrialized membrane technology earliest,
Have been obtained for being widely applied in field of seawater desalination.The core of reverse osmosis technology is reverse osmosis composite membrane, and research and development are high
The reverse osmosis composite membrane of performance is significant.Wherein polyamide reverse osmosis composite film is widely used, and the method for preparation has
A variety of, wherein interfacial polymerization is that application is most wide, maximally efficient method.Compared with other preparation methods, interfacial polymerization
Method has from inhibition, and the formation of superficial cortical layers prevents diffusion of the polyamine to reaction zone so that separating layer thickness most I
To reach 30 nm；Because reaction occurs at the interface of two-phase solvent, so not requiring particularly monomer purity, Ke Yitong
Cross the performance for the concentration regulation and control separating layer for changing monomer in solvent.These advantages make it that interfacial polymerization turns into the preparation of most main flow
The method of composite membrane.
Although polyamide reverse osmosis composite film has significant raising in terms of water flux and salt rejection rate, but still exists
Many not enough, such as energy consumption is big, poor selectivity, easily pollution, flux finite so that reverse osmosis membrane technology obtains the cost ratio of fresh water
It is higher.In recent years, led using the research that desalinization cost as target are reduced by improving water flux as reverse osmosis membrane materials
One of the focus in domain.Wherein by the method for modifying of adulterate inorganic nanoparticles or addition cosolvent, because of technical process and not
Modified polyamide composite film is identical, does not increase preparation process, and of great interest.
By the way that inorganic nanoparticles are dispersed in the organic phase of interfacial polymerization or aqueous phase, during interfacial polymerization,
Inorganic nanoparticles can be doped in the separating layer of polyamide, be improved the water flux of film.Although the performance of film is obtained
Improve, but be due to nano particle be to be added in the form of solid inorganic material in solution, be accordingly difficult to be uniformly dispersed, and
And research finds that when the nano particle of addition is more, it can assemble in aramid layer, cause to lack in aramid layer
Fall into, decline the separating property of film.
Organic molecule is added in organic phase as cosolvent, two it is alternate can form miscible area, form new
PA membrane, it has multilayer, loose structure, the thickness increase of total PA membrane, but the thickness per tunic is less than
Unmodified film, the degree of cross linking of film declines, aperture and porosity increase, hydrophily enhancing.So the water flux increase of film.Due to
During preparation, cosolvent is, to be added in the form of organic molecule in organic phase, to be asked in the absence of hardly possible is dispersed
Topic, hence in so that the Repeatability of the film prepared is good.But, cosolvent after the film formation, the mistake soaked in heat treatment and water
Cheng Zhonghui is removed.Therefore, at operation with high pressure PA membrane can be compacted the film of cosolvent formation, therefore in counter-infiltration operation
During the water flux of film can be caused to be reduced with the operating time.
Therefore, exploration prepares the new method of reverse osmosis composite membrane, with important research meaning.
The content of the invention
The present invention is intended to provide a kind of polyamide reverse osmosis composite film ester modified by silicic acid, its preparation method is by silicic acid
Ester is added among the organic phase of interfacial polymerization or aqueous phase, influences interfacial polymerization process, and hydrolytic polymerization product is to polyamides
The influence of amine layer, acted on by cosolvent reduces the degree of cross linking of film first, introduces inorganic additionally by the hydrolytic polymerization of additive
Nano material, and then greatly improve water flux on the basis of salt-stopping rate is ensured.
To achieve the above object, the invention provides following technical scheme.
A kind of preparation method of esters of silicon acis modified polyamide reverse osmosis composite membrane.
（1）The aqueous phase solution of the compound containing aromatic amine is prepared, wherein monomer mass concentration is 0.1% ~ 10%, aqueous phase pH
For 8 ~ 10.
（2）The organic phase solution of the acyl chlorides containing aromatic series is prepared, wherein aromatic series acyl chlorides mass concentration is 0.02% ~ 2%.
（3）Esters of silicon acis is respectively added to aqueous phase or organic phase, and mass concentration is 0 ~ 30%.
（4）Aqueous phase solution is poured on after support layer surface, amount of time and removes the unnecessary aqueous phase solution of support layer surface, drip
Organic phase solution submergence film surface is contacted into progress interface polymerization reaction with aqueous phase after dry, treats that organic phase is drained and obtains polyamide work
Property layer.
（5）By step（4）Obtained reverse osmosis composite membrane dries 2 ~ 5min at 80 ~ 110 DEG C, is made and is changed by esters of silicon acis
The polyamide reverse osmosis composite film of property.
（6）Finally it is placed in immersion in deionized water and removes unreacted monomer and solvent.
In the present invention, step（1）Aromatic polyvalent amine compound, preferably m-phenylene diamine (MPD).
In the present invention, step（1）Aqueous phase pH be adjusted to 8 ~ 10.
In the present invention, step（2）Aromatic polyvalent acyl chlorides, preferably pyromellitic trimethylsilyl chloride.
In the present invention, step（2）Organic solvent be n-hexane, preferably hexamethylene etc., n-hexane.
In the present invention, step（3）Esters of silicon acis include positive quanmethyl silicate（TMOS）, tetraethyl orthosilicate（TEOS）.
In the present invention, step（3）The addition manner of esters of silicon acis is the organic phase or aqueous phase for being added to interfacial polymerization.
In the present invention, step（4）The interfacial polymerization time be 1 ~ 5min.
Compared with prior art, instant invention overcomes by be blended means adulterated into polyamide reverse osmosis composite film it is inorganic
During nano material, because inorganic nanoparticles are incompatible with solvent, and it is dispersed and in polyamide to cause nano particle to be difficult to
Reunite and formed the deficiency of defect in separating layer；Overcome when preparing polyamide reverse osmosis composite film by adding cosolvent, altogether
Solvent, which only serves aramid layer in pore-creating effect, application process, can be compacted the shortcoming for causing water flux to decline.Esters of silicon acis can be with
Organic solvent is dissolved in, therefore cosolvent can be played a part of, and esters of silicon acis can be sent out in interfacial polymerization and last handling process
Unboiled water depolymerizes to form solid nano material, and stays in aramid layer, i.e., with reference to inorganic nanoparticles and organic molecule two
The advantage of the method for kind, may have more preferable lifting to the performance of film.
Brief description of the drawings
Fig. 1 is the surface scan electron microscope of the reverse osmosis composite membrane prepared by embodiment 1.
Fig. 2 is the film properties figure of the reverse osmosis composite membrane prepared by embodiment 1.
Fig. 3 is the surface scan electron microscope of the reverse osmosis composite membrane prepared by embodiment 3.
Fig. 4 is the film properties figure of the reverse osmosis composite membrane prepared by embodiment 2.
Fig. 5 is the film properties figure of the reverse osmosis composite membrane prepared by embodiment 3.
Fig. 6 is the film properties figure of the reverse osmosis composite membrane prepared by embodiment 4.
Embodiment
The present invention, which prepares reverse osmosis composite membrane, is used for desalination, and water flux and salt-stopping rate are to evaluate performance of composite antiosmosis membrane
Two important parameters, water flux and salt rejection rate are calculated by below equation：
Salt rejection rate R（%）What is characterized is size of the film to be measured to solute retention ability, i.e., the quality percentage of the solute of film retention to be measured
The ratio between mass percent of solute in number and material liquid.At a certain temperature, the mass percent of solute and its conductance in solution
The proportional relation of rate.Therefore, taken off in an experiment by measuring the conductivity value of penetrating fluid and material liquid respectively and can calculate
Salt rate.C1, C2The respectively electrical conductivity of material liquid and penetrating fluid.
。
Water flux F represented under uniform temperature and certain operating pressure, unit interval t（h）Interior transmission per membrane area S (m2)
The volume V (L) of water, unit is L/m2•h。
。
Embodiment 1
Tetraethyl orthosilicate is added to organic phase assistant interface polymerization 5min, polyamide reverse osmosis composite film is prepared.
（1）Polysulfone supporting layer is fixed on clip up, first by the aqueous phase solution containing m-phenylene diamine (MPD)（Between 2wt%
Phenylenediamine）Film surface is poured on, is advisable with submerging face, support layer surface is removed after face rolls 2min back and forth with rubber bar many
Remaining aqueous phase solution.
（2）By the organic phase containing pyromellitic trimethylsilyl chloride and tetraethyl orthosilicate in right amount after draining（The equal benzene front threes of 0.1wt%
Acyl chlorides, 0 ~ 35wt% TEOS）Submergence film surface contacts 5min with aqueous phase, and interface is carried out under tetraethyl orthosilicate subsidiary conditions
Polymerisation obtains polyamide active layer, then removes the unnecessary organic phase solution of support layer surface.
（3）Drain 2min and 5min is heat-treated at 80 DEG C, that is, obtain polyamide reverse osmosis composite film.
（4）Finally it is placed in immersion in deionized water and removes unreacted monomer and solvent.
Embodiment 2
PH=10.0 is adjusted, positive quanmethyl silicate is added to organic phase assistant interface polymerization 1min, polyamide reverse osmosis is prepared and answers
Close film.
（1）Polysulfone supporting layer is fixed on clip up, first by the aqueous phase solution containing m-phenylene diamine (MPD)（Between 2wt%
Phenylenediamine, pH=10.0）Film surface is poured on, is advisable with submerging face, support is removed after face rolls 2min back and forth with rubber bar
The unnecessary aqueous phase solution of layer surface.
（2）By the organic phase containing pyromellitic trimethylsilyl chloride and positive quanmethyl silicate in right amount after draining（The equal benzene front threes of 0.1wt%
Acyl chlorides, 0 ~ 0.3wt% TMOS）Submergence film surface contacts 1min with aqueous phase, and interface is carried out under positive quanmethyl silicate subsidiary conditions
Polymerisation obtains polyamide active layer, then removes the unnecessary organic phase solution of support layer surface.
（3）Drain 2min and 5min is heat-treated at 80 DEG C, that is, obtain polyamide reverse osmosis composite film.
（4）Finally it is placed in immersion in deionized water and removes unreacted monomer and solvent.
Embodiment 3
PH=10.0 is adjusted, positive quanmethyl silicate is added to organic phase assistant interface polymerization 2min, polyamide reverse osmosis is prepared and answers
Close film.
（1）Polysulfone supporting layer is fixed on clip up, first by the aqueous phase solution containing m-phenylene diamine (MPD)（Between 2wt%
Phenylenediamine, pH=10.0）Film surface is poured on, is advisable with submerging face, support is removed after face rolls 2min back and forth with rubber bar
The unnecessary aqueous phase solution of layer surface.
（2）By the organic phase containing pyromellitic trimethylsilyl chloride and positive quanmethyl silicate in right amount after draining（The equal benzene front threes of 0.1wt%
Acyl chlorides, 0 ~ 1.6wt% TMOS）Submergence film surface contacts 2min with aqueous phase, and interface is carried out under positive quanmethyl silicate subsidiary conditions
Polymerisation obtains polyamide active layer, then removes the unnecessary organic phase solution of support layer surface.
（3）Drain 2min and 5min is heat-treated at 80 DEG C, that is, obtain polyamide reverse osmosis composite film.
（4）Finally it is placed in immersion in deionized water and removes unreacted monomer and solvent.
Embodiment 4
PH=10.0 is adjusted, positive quanmethyl silicate is added to aqueous phase assistant interface polymerization 1min, polyamide reverse osmosis is prepared and is combined
Film.
（1）Polysulfone supporting layer is fixed on clip up, first by containing m-phenylene diamine (MPD) and positive quanmethyl silicate
Aqueous phase solution（2wt% m-phenylene diamine (MPD)s, 0 ~ 0.4wt% TMOS, pH=10.0）Film surface is poured on, is advisable with submerging face, uses rubber
Glue stick removes the unnecessary aqueous phase solution of support layer surface after face rolls 2min back and forth.
（2）By the organic phase containing pyromellitic trimethylsilyl chloride in right amount after draining（0.1wt% pyromellitic trimethylsilyl chlorides）Submerge film surface
1min is contacted with aqueous phase, interface polymerization reaction is carried out under positive quanmethyl silicate subsidiary conditions and obtains polyamide active layer, then
Remove the unnecessary organic phase solution of support layer surface.
（3）Drain 2min and 5min is heat-treated at 80 DEG C, that is, obtain polyamide reverse osmosis composite film.
（4）Finally it is placed in immersion in deionized water and removes unreacted monomer and solvent.
Key property is tested：
Operation temperature is 25 DEG C, and material liquid is the 2000ppm NaCl aqueous solution.The precompressed half an hour densification first under 1.8MPa,
Then water flux is carried out to reverse osmosis composite membrane to be measured under 1.6MPa and salt rejection rate is tested.
From the stereoscan photograph on Fig. 1 and Fig. 3 films surface, polyamide prepared by the polymerization of esters of silicon acis assistant interface is combined
Film has sandwich construction, and this is the characteristic feature that cosolvent method prepares composite membrane.
From performance test Fig. 2,4,5 analyze, tetraethyl orthosilicate, positive quanmethyl silicate no matter be added to aqueous phase or
Organic phase can improve the separating property of film.From sample result, TMOS is added to organic phase interfacial polymerization 2min made
Standby polyamide composite film, water flux increases to three times while salt-stopping rate holding higher level.Under the conditions of pH is not adjusted,
TEOS usage amount is larger, and with the increase membrane superficial tissue of mass fraction, great changes will take place, and water flux rises one times.
Claims (8)
1. a kind of ester modified polyamide reverse osmosis composite film preparation method of silicic acid, this method comprises the following steps：
（1）The aqueous phase solution of the compound of amine containing aromatic polyvalent is prepared, wherein monomer mass concentration is 0.1% ~ 10%, aqueous phase pH
For 8 ~ 10；
（2）The organic phase solution of the acyl chlorides containing aromatic series is prepared, wherein aromatic series acyl chlorides mass concentration is 0.02% ~ 2%；
（3）Esters of silicon acis is respectively added to aqueous phase or organic phase, and mass concentration is 0 ~ 30%；
（4）Aqueous phase solution is poured on after support layer surface, amount of time and removes the unnecessary aqueous phase solution of support layer surface, after draining
Organic phase solution submergence film surface is contacted into progress interface polymerization reaction with aqueous phase, treats that organic phase is drained and obtains polyamide activity
Layer；
（5）By step（4）Obtained reverse osmosis composite membrane dries 2 ~ 5min at 80 ~ 110 DEG C, is made ester modified by silicic acid
Polyamide reverse osmosis composite film；
（6）Finally it is placed in immersion in deionized water and removes unreacted monomer and solvent.
2. preparation method according to claim 1, it is characterised in that step（1）Aromatic polyvalent amine compound, it is excellent
Elect m-phenylene diamine (MPD) as.
3. preparation method according to claim 1, it is characterised in that step（1）Aqueous phase pH be adjusted to 8 ~ 10.
4. preparation method according to claim 1, it is characterised in that step（2）Aromatic polyvalent acyl chlorides, be preferably equal
The formyl chloride of benzene three.
5. preparation method according to claim 1, it is characterised in that step（2）Organic solvent be n-hexane, hexamethylene
Deng preferred n-hexane.
6. preparation method according to claim 1, it is characterised in that step（3）Silicate ester compound include positive silicic acid four
Methyl esters（TMOS）, tetraethyl orthosilicate（TEOS）.
7. preparation method according to claim 1, it is characterised in that step（3）The addition manner of esters of silicon acis is to be added to boundary
The organic phase or aqueous phase of face polymerization.
8. preparation method according to claim 1, it is characterised in that step（4）（5）The interfacial polymerization time be 1 ~ 5min
.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108479400A (en) * | 2018-04-16 | 2018-09-04 | 哈尔滨工业大学 | A kind of preparation method of silica/polyvinylidene fluoride-polyamide reverse osmose membrane |
| CN110026094A (en) * | 2019-05-22 | 2019-07-19 | 哈尔滨工业大学 | A kind of preparation method of the resistant to pollution in-situ silica of high throughput/polyamide reverse osmosis nano composite membrane |
| CN110237716A (en) * | 2019-07-03 | 2019-09-17 | 合肥学院 | It is a kind of with the interfacial polymerization composite nanometer filtering film in situ of excellent permeability and separation performance, preparation method and application |
| CN110479119A (en) * | 2019-07-29 | 2019-11-22 | 武汉纺织大学 | A kind of preparation method of polyamide composite reverse osmosis membrane |
| CN110960987A (en) * | 2019-12-11 | 2020-04-07 | 恩泰环保科技（常州）有限公司 | High-performance nano hybrid reverse osmosis membrane and preparation method thereof |
| CN116116244A (en) * | 2023-04-18 | 2023-05-16 | 蓝星（杭州）膜工业有限公司 | Composite membrane and preparation method and application thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05294609A (en) * | 1992-04-17 | 1993-11-09 | Yoshio Imai | Polyimide-silica composite film and silica film formed therefrom |
| CN102258949A (en) * | 2011-06-10 | 2011-11-30 | 南京帝膜净水材料开发有限公司 | Method for adjusting interfacial structure of polyamide reverse osmosis compound membrane |
| CN102430349A (en) * | 2011-12-22 | 2012-05-02 | 中国海洋大学 | Reverse osmosis composite membrane and preparation method thereof |
| CN104474910A (en) * | 2014-12-11 | 2015-04-01 | 杭州水处理技术研究开发中心有限公司 | Preparation method of organic-inorganic composite separation membrane |
| CN105169971A (en) * | 2015-09-09 | 2015-12-23 | 中国海洋大学 | Reverse osmosis composite membrane |
-
2017
- 2017-04-17 CN CN201710247555.XA patent/CN106943902A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05294609A (en) * | 1992-04-17 | 1993-11-09 | Yoshio Imai | Polyimide-silica composite film and silica film formed therefrom |
| CN102258949A (en) * | 2011-06-10 | 2011-11-30 | 南京帝膜净水材料开发有限公司 | Method for adjusting interfacial structure of polyamide reverse osmosis compound membrane |
| CN102430349A (en) * | 2011-12-22 | 2012-05-02 | 中国海洋大学 | Reverse osmosis composite membrane and preparation method thereof |
| CN104474910A (en) * | 2014-12-11 | 2015-04-01 | 杭州水处理技术研究开发中心有限公司 | Preparation method of organic-inorganic composite separation membrane |
| CN105169971A (en) * | 2015-09-09 | 2015-12-23 | 中国海洋大学 | Reverse osmosis composite membrane |
Non-Patent Citations (1)
| Title |
|---|
| 时钧等: "《膜技术手册》", 31 January 2001, 化学工业出版社 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108479400A (en) * | 2018-04-16 | 2018-09-04 | 哈尔滨工业大学 | A kind of preparation method of silica/polyvinylidene fluoride-polyamide reverse osmose membrane |
| CN110026094A (en) * | 2019-05-22 | 2019-07-19 | 哈尔滨工业大学 | A kind of preparation method of the resistant to pollution in-situ silica of high throughput/polyamide reverse osmosis nano composite membrane |
| CN110237716A (en) * | 2019-07-03 | 2019-09-17 | 合肥学院 | It is a kind of with the interfacial polymerization composite nanometer filtering film in situ of excellent permeability and separation performance, preparation method and application |
| CN110479119A (en) * | 2019-07-29 | 2019-11-22 | 武汉纺织大学 | A kind of preparation method of polyamide composite reverse osmosis membrane |
| CN110479119B (en) * | 2019-07-29 | 2022-03-25 | 武汉纺织大学 | Preparation method of polyamide composite reverse osmosis membrane |
| CN110960987A (en) * | 2019-12-11 | 2020-04-07 | 恩泰环保科技（常州）有限公司 | High-performance nano hybrid reverse osmosis membrane and preparation method thereof |
| CN110960987B (en) * | 2019-12-11 | 2022-05-03 | 恩泰环保科技（常州）有限公司 | High-performance nano hybrid reverse osmosis membrane and preparation method thereof |
| CN116116244A (en) * | 2023-04-18 | 2023-05-16 | 蓝星（杭州）膜工业有限公司 | Composite membrane and preparation method and application thereof |
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