CN109762382A - Thermal polymerization nanofiltration film preparation coating liquid and application method - Google Patents
Thermal polymerization nanofiltration film preparation coating liquid and application method Download PDFInfo
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- CN109762382A CN109762382A CN201811603591.6A CN201811603591A CN109762382A CN 109762382 A CN109762382 A CN 109762382A CN 201811603591 A CN201811603591 A CN 201811603591A CN 109762382 A CN109762382 A CN 109762382A
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- 239000011248 coating agent Substances 0.000 title claims abstract description 37
- 238000000576 coating method Methods 0.000 title claims abstract description 37
- 239000007788 liquid Substances 0.000 title claims abstract description 37
- 238000001728 nano-filtration Methods 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- 238000012719 thermal polymerization Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000012528 membrane Substances 0.000 claims abstract description 13
- 239000004094 surface-active agent Substances 0.000 claims abstract description 8
- 239000003999 initiator Substances 0.000 claims abstract description 6
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 5
- 239000003125 aqueous solvent Substances 0.000 claims abstract description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 18
- 230000008595 infiltration Effects 0.000 claims description 9
- 238000001764 infiltration Methods 0.000 claims description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims description 9
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 8
- STVZJERGLQHEKB-UHFFFAOYSA-N ethylene glycol dimethacrylate Chemical compound CC(=C)C(=O)OCCOC(=O)C(C)=C STVZJERGLQHEKB-UHFFFAOYSA-N 0.000 claims description 7
- 239000002202 Polyethylene glycol Substances 0.000 claims description 6
- UKMBKKFLJMFCSA-UHFFFAOYSA-N [3-hydroxy-2-(2-methylprop-2-enoyloxy)propyl] 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCC(CO)OC(=O)C(C)=C UKMBKKFLJMFCSA-UHFFFAOYSA-N 0.000 claims description 6
- 229920001223 polyethylene glycol Polymers 0.000 claims description 6
- KWSLGOVYXMQPPX-UHFFFAOYSA-N 5-[3-(trifluoromethyl)phenyl]-2h-tetrazole Chemical group FC(F)(F)C1=CC=CC(C2=NNN=N2)=C1 KWSLGOVYXMQPPX-UHFFFAOYSA-N 0.000 claims description 5
- RCEAADKTGXTDOA-UHFFFAOYSA-N OS(O)(=O)=O.CCCCCCCCCCCC[Na] Chemical compound OS(O)(=O)=O.CCCCCCCCCCCC[Na] RCEAADKTGXTDOA-UHFFFAOYSA-N 0.000 claims description 5
- -1 diethyl enamine Chemical class 0.000 claims description 5
- 229910001379 sodium hypophosphite Inorganic materials 0.000 claims description 5
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 4
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 4
- 230000007935 neutral effect Effects 0.000 claims description 4
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 4
- 235000019394 potassium persulphate Nutrition 0.000 claims description 4
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 claims description 3
- NJSSICCENMLTKO-HRCBOCMUSA-N [(1r,2s,4r,5r)-3-hydroxy-4-(4-methylphenyl)sulfonyloxy-6,8-dioxabicyclo[3.2.1]octan-2-yl] 4-methylbenzenesulfonate Chemical compound C1=CC(C)=CC=C1S(=O)(=O)O[C@H]1C(O)[C@@H](OS(=O)(=O)C=2C=CC(C)=CC=2)[C@@H]2OC[C@H]1O2 NJSSICCENMLTKO-HRCBOCMUSA-N 0.000 claims description 3
- DDXLVDQZPFLQMZ-UHFFFAOYSA-M dodecyl(trimethyl)azanium;chloride Chemical compound [Cl-].CCCCCCCCCCCC[N+](C)(C)C DDXLVDQZPFLQMZ-UHFFFAOYSA-M 0.000 claims description 3
- DNJIEGIFACGWOD-UHFFFAOYSA-N ethyl mercaptane Natural products CCS DNJIEGIFACGWOD-UHFFFAOYSA-N 0.000 claims description 3
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical compound CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 claims description 3
- 125000005395 methacrylic acid group Chemical group 0.000 claims description 3
- DGVVWUTYPXICAM-UHFFFAOYSA-N β‐Mercaptoethanol Chemical compound OCCS DGVVWUTYPXICAM-UHFFFAOYSA-N 0.000 claims description 3
- 229920002818 (Hydroxyethyl)methacrylate Polymers 0.000 claims description 2
- UCWYIXXOGZQXSN-UHFFFAOYSA-N 1-phenylprop-1-ene-2-sulfonic acid Chemical compound OS(=O)(=O)C(C)=CC1=CC=CC=C1 UCWYIXXOGZQXSN-UHFFFAOYSA-N 0.000 claims description 2
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 claims description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 claims description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 2
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000010926 purge Methods 0.000 claims description 2
- 229940117958 vinyl acetate Drugs 0.000 claims description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims 3
- MPNXSZJPSVBLHP-UHFFFAOYSA-N 2-chloro-n-phenylpyridine-3-carboxamide Chemical compound ClC1=NC=CC=C1C(=O)NC1=CC=CC=C1 MPNXSZJPSVBLHP-UHFFFAOYSA-N 0.000 claims 1
- OYINQIKIQCNQOX-UHFFFAOYSA-M 2-hydroxybutyl(trimethyl)azanium;chloride Chemical compound [Cl-].CCC(O)C[N+](C)(C)C OYINQIKIQCNQOX-UHFFFAOYSA-M 0.000 claims 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims 1
- 235000011130 ammonium sulphate Nutrition 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000012510 hollow fiber Substances 0.000 abstract description 4
- 239000002904 solvent Substances 0.000 abstract description 2
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical group [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 4
- DBCAQXHNJOFNGC-UHFFFAOYSA-N 4-bromo-1,1,1-trifluorobutane Chemical compound FC(F)(F)CCCBr DBCAQXHNJOFNGC-UHFFFAOYSA-N 0.000 description 3
- WHNPOQXWAMXPTA-UHFFFAOYSA-N 3-methylbut-2-enamide Chemical compound CC(C)=CC(N)=O WHNPOQXWAMXPTA-UHFFFAOYSA-N 0.000 description 2
- 238000012695 Interfacial polymerization Methods 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 description 1
- WEAQXVDSAUMZHI-UHFFFAOYSA-M 2-methylprop-2-enamide;trimethyl(propyl)azanium;chloride Chemical compound [Cl-].CC(=C)C(N)=O.CCC[N+](C)(C)C WEAQXVDSAUMZHI-UHFFFAOYSA-M 0.000 description 1
- AGBXYHCHUYARJY-UHFFFAOYSA-N 2-phenylethenesulfonic acid Chemical compound OS(=O)(=O)C=CC1=CC=CC=C1 AGBXYHCHUYARJY-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- JAWMENYCRQKKJY-UHFFFAOYSA-N [3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-ylmethyl)-1-oxa-2,8-diazaspiro[4.5]dec-2-en-8-yl]-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]methanone Chemical compound N1N=NC=2CN(CCC=21)CC1=NOC2(C1)CCN(CC2)C(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F JAWMENYCRQKKJY-UHFFFAOYSA-N 0.000 description 1
- YXYZMHGSOKYZAF-UHFFFAOYSA-M [Cl-].C(C(=C)C)(=O)OCC[N+](C(C)(C)C)(C)C Chemical compound [Cl-].C(C(=C)C)(=O)OCC[N+](C(C)(C)C)(C)C YXYZMHGSOKYZAF-UHFFFAOYSA-M 0.000 description 1
- GCFSKCZBSOKYLJ-UHFFFAOYSA-N [Na].O[PH2]=O Chemical compound [Na].O[PH2]=O GCFSKCZBSOKYLJ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention belongs to field of membrane preparation, and in particular to a kind of thermal polymerization nanofiltration film preparation coating liquid and application method.Thermal polymerization nanofiltration film preparation coating liquid includes following content of component: 2-10 parts of charge adjusting agent, 0.5-5 parts of crosslinking agent, and 10-20 parts of chain-transferring agent, 2-10 parts of initiator, 0.1-1 parts of surfactant and 100 parts of aqueous solvent.The present invention takes water as a solvent production hollow fiber nanofiltration membrane, and serialization external pressure production model, the shorter cost of process is lower, can also reduce carrying capacity of environment.
Description
Technical field
The invention belongs to field of membrane preparation, and in particular to a kind of thermal polymerization nanofiltration film preparation coating liquid and application method.
Background technique
It currently, the preparation of hollow fiber nanofiltration membrane mostly uses internal pressure, and is the interfacial polymerization of batch production.And it is continuous
Outside the pale of civilization pressure production hollow fiber nanofiltration membrane also uses interfacial polymerization；Interface sentence polymerization needs a large amount of organic solvents, pollutes ring
Border, and complexity is post-processed, improve production cost.
Summary of the invention
The purpose of the present invention is to overcome the defects in the prior art, provides a kind of thermal polymerization nanofiltration film preparation coating liquid
And application method.
The present invention to achieve the above object, using following technical scheme:
A kind of thermal polymerization nanofiltration film preparation coating liquid, including following content of component: 2-10 parts of charge adjusting agent, crosslinking
0.5-5 parts of agent, 10-20 parts of chain-transferring agent, 2-10 parts of initiator, 0.1-1 parts of surfactant and 100 parts of aqueous solvent.
The charge adjusting agent includes negative charge control agents, positive charge control agents and neutral regulator.
The positive charge control agents include diethyl enamine, diallyldimethylammonium chloride, Methacrylamide propyl
Trimethyl ammonium chloride or MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride；The negative charge control agents include metering system
Acid, methacrylic sulfonic acid, methyl styrenesulfonic acid or 2- Methacrylamide -2- methyl propane sulfonic acid；The neutral adjusting
Agent includes Methacrylamide, and dimethylacrylamide, vinylacetate, hydroxyethyl methacrylate or methacrylic acid are sweet
Grease.
The chain-transferring agent is sodium hypophosphite, isopropanol or mercaptoethanol.
The crosslinking agent be diethyl allyl diglycol, glycerol dimethacrylate, polyethylene glycol dimethacrylate,
Or ethylene glycol dimethacrylate.
The initiator is ammonium persulfate, potassium peroxydisulfate or hydrogen peroxide.
The surfactant be lauryl sodium sulfate, dodecyl sodium sulfate, dodecyl trimethyl ammonium chloride,
Or polyethylene glycol.
The invention also includes a kind of methods using the coating liquid preparation nanofiltration membrane, include the following steps: film 1)
Silk infiltration in coating liquid, high-speed air is blown away swim after, into flat-temperature zone, low speed nitrogen is used to heat film wire；2) it has reacted
Cheng Hou is soaked in RO water overnight to get product；Wherein, coating liquid infiltrating time 5-60s；High-speed air purge time 1-
5min；Thermostat temperature is 60-80 degree, heating time 5-20min.
Compared with prior art, the beneficial effects of the present invention are:
The present invention takes water as a solvent production hollow fiber nanofiltration membrane, and serialization external pressure production model, the shorter cost of process is more
It is low, carrying capacity of environment can also be reduced.
Specific embodiment
In order to make those skilled in the art more fully understand technical solution of the present invention, implement below with reference to best
The present invention is described in further detail for example.
Embodiment 1: the preparation of coating liquid: charge adjusting agent 2- Methacrylamide -2- methyl propane sulfonic acid 10kg, crosslinking
Agent polyethylene glycol dimethacrylate 1kg, chain-transferring agent sodium hypophosphite 10kg, initiator ammonium persulfate 10kg, surface-active
Agent lauryl sodium sulfate 0.3kg, water 100kg are mixed to get.Film wire infiltration 10s, high-speed air in coating liquid are swept into 5min,
Into flat-temperature zone, film wire is heated using low speed nitrogen, temperature is 80 degree, time 5min.After the reaction was completed, it is soaked in mistake in RO water
Night is to get product.
Embodiment 2: coating liquid: diallyldimethylammonium chloride 5kg, glycerol dimethacrylate 0.5kg, hypophosphorous acid
Sodium 12kg, potassium peroxydisulfate 5kg, polyethylene glycol 0.1kg, water 100kg；Film wire infiltration 10s, high-speed air in coating liquid are swept
3min heats film wire using low speed nitrogen, temperature is 70 degree, time 8min into flat-temperature zone.After the reaction was completed, it is soaked in RO
Overnight to get product in water.
Embodiment 3: coating liquid: methacrylic sulfonic acid 4kg, ethylene glycol dimethacrylate 1kg, sodium hypophosphite 20kg,
Ammonium persulfate 2kg, dodecyl sodium sulfate 0.2kg, water 100kg.Film wire infiltration 40s, high-speed air in coating liquid are swept
5min heats film wire using low speed nitrogen, temperature is 80 degree, time 16min into flat-temperature zone.After the reaction was completed, it is soaked in RO
Overnight to get product in water.
Embodiment 4: coating liquid: hydroxy-ethyl acrylate 10kg, glycerol dimethacrylate 5kg, isopropanol 15kg, over cure
Sour sodium 10kg, lauryl sodium sulfate 0.5kg, water 100kg.Film wire infiltration 60s, high-speed air in coating liquid are swept into 4min,
Into flat-temperature zone, film wire is heated using low speed nitrogen, temperature is 80 degree, time 5min.After the reaction was completed, it is soaked in mistake in RO water
Night is to get product.
Embodiment 5: coating liquid: dimethylacrylamide 2kg, glycerol dimethacrylate 2kg, mercaptoethanol 16kg,
Potassium peroxydisulfate 6kg, dodecyl trimethyl ammonium chloride 1kg, water 100kg.By film wire infiltration 30s, high-speed air in coating liquid
5min is swept, into flat-temperature zone, heats film wire using low speed nitrogen, temperature is 70 degree, time 10min.After the reaction was completed, it is soaked in
Overnight to get product in RO water.
Embodiment 6: coating liquid: glyceral methacrylate 8kg, ethylene glycol dimethacrylate 1kg, isopropanol
10kg, ammonium persulfate 2kg, dodecyl sodium sulfate 0.3kg, water 100kg.By film wire infiltration 5s, high-speed air in coating liquid
1min is swept, into flat-temperature zone, heats film wire using low speed nitrogen, temperature is 60 degree, time 20min.After the reaction was completed, it is soaked in
Overnight to get product in RO water.
7 coating liquid of embodiment: styrene sulfonic acid 10kg, glycerol dimethacrylate 5kg, sodium hypophosphite 20kg, over cure
Sour ammonium 7kg, lauryl sodium sulfate 0.6kg, water 100kg.Film wire infiltration 10s, high-speed air in coating liquid are swept into 5min, into
Enter flat-temperature zone, heats film wire using low speed nitrogen, temperature is 80 degree, time 5min.After the reaction was completed, it is soaked in mistake in RO water
Night is to get product.
Comparative example 1: being added without charge adjusting agent in coating liquid, remaining is same as Example 1.
Comparative example 2: being not added chain-transferring agent in coating liquid, remaining is same as Example 1.
Comparative example 3: being added without surfactant in coating liquid, remaining is same as Example 1.
Nano filter membrane separating property test method
Test fluid: 2000mg/L magnesium sulfate (MgSO is used4) solution testing.
Operating parameter: it is tested using nanofiltration membrane evaluation instrument, pressure 0.5MPa, 25 DEG C, pH=7.0, the rate of recovery 15%.
Calculation formula:
Rejection R=(CI-CO)/CI* 100%, wherein CIFor conductance of intaking, COTo be discharged conductance；
Flux F=V/ (A*T), wherein V is to produce water volume, and A is membrane area, and T is time of measuring.
The comparison of 1 nano filter membrane separating property of table.
Table 1
| Flux (LMH) | Rejection (%) | |
| Embodiment 1 | 32 | 91 |
| Embodiment 2 | 29 | 85 |
| Embodiment 3 | 35 | 89 |
| Embodiment 4 | 32 | 88 |
| Embodiment 5 | 33 | 89 |
| Embodiment 6 | 34 | 87 |
| Embodiment 7 | 30 | 90 |
| Comparative example 1 | 8 | 90 |
| Comparative example 2 | 12 | 91 |
| Comparative example 3 | 28 | 73 |
Conclusion: using this method can be obtained rejection 85% or more nanofiltration membrane wherein surfactant be introduced as it is each
The abundant dissolution of component provides guarantee, is the important guarantee (comparative example 3) of rejection.And charge adjusting agent, chain-transferring agent are
The important guarantee of enough flux.
The above is only a preferred embodiment of the present invention, for those of ordinary skill in the art, according to the present invention
Thought, there will be changes in the specific implementation manner and application range, and the content of the present specification should not be construed as to the present invention
Limitation.
Claims (8)
1. a kind of thermal polymerization nanofiltration film preparation coating liquid, which is characterized in that including following content of component: charge adjusting agent 2-
10 parts, 0.5-5 parts of crosslinking agent, 10-20 parts of chain-transferring agent, 2-10 parts of initiator, 0.1-1 parts of surfactant and aqueous solvent
100 parts.
2. thermal polymerization nanofiltration film preparation coating liquid according to claim 1, which is characterized in that the charge adjusting agent
Including negative charge control agents, positive charge control agents and neutral regulator.
3. thermal polymerization nanofiltration film preparation coating liquid according to claim 2, which is characterized in that the positive charge is adjusted
Agent includes diethyl enamine, diallyldimethylammonium chloride, Methacrylamide hydroxypropyltrimonium chloride or metering system
Acyloxyethyl trimethyl ammonium chloride；The negative charge control agents include methacrylic acid, methacrylic sulfonic acid, methyl styrene
Sulfonic acid or 2- Methacrylamide -2- methyl propane sulfonic acid；The neutral regulator includes Methacrylamide, dimethyl propylene
Acrylamide, vinylacetate, hydroxyethyl methacrylate or glyceral methacrylate.
4. thermal polymerization nanofiltration film preparation coating liquid according to claim 1, which is characterized in that the chain-transferring agent is
Sodium hypophosphite, isopropanol or mercaptoethanol.
5. thermal polymerization nanofiltration film preparation coating liquid according to claim 1, which is characterized in that the crosslinking agent is two
Ethylene glycol, glycerol dimethacrylate, polyethylene glycol dimethacrylate or ethylene glycol dimethacrylate
Ester.
6. thermal polymerization nanofiltration film preparation coating liquid according to claim 1, which is characterized in that the initiator was
Ammonium sulfate, potassium peroxydisulfate or hydrogen peroxide.
7. thermal polymerization nanofiltration film preparation coating liquid according to claim 1, which is characterized in that the surfactant
For lauryl sodium sulfate, dodecyl sodium sulfate, dodecyl trimethyl ammonium chloride or polyethylene glycol.
8. a kind of method using the described in any item coating liquid preparation nanofiltration membranes of claim 1-7, which is characterized in that including under
State step: 1) by film wire infiltration in coating liquid, high-speed air is blown away swim after, into flat-temperature zone, heated using low speed nitrogen
Film wire；2) it after the reaction was completed, is soaked in RO water overnight to get product；Wherein, coating liquid infiltrating time 5-60s；High-speed air
Purge time 1-5min；Thermostat temperature is 60-80 degree, heating time 5-20min.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111001310A (en) * | 2019-12-23 | 2020-04-14 | 天津膜天膜科技股份有限公司 | Preparation method of environment-friendly nanofiltration membrane |
| CN119349747A (en) * | 2024-12-30 | 2025-01-24 | 北京东雷恒业环保科技有限公司 | A high-salt wastewater treatment membrane and preparation method thereof |
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| 邱长泉等: "UV辐照接枝制备酚酞基聚芳醚酮纳滤膜-链转移剂的作用", 《化学学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111001310A (en) * | 2019-12-23 | 2020-04-14 | 天津膜天膜科技股份有限公司 | Preparation method of environment-friendly nanofiltration membrane |
| CN119349747A (en) * | 2024-12-30 | 2025-01-24 | 北京东雷恒业环保科技有限公司 | A high-salt wastewater treatment membrane and preparation method thereof |
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Application publication date: 20190517 |