CN106552514A - A kind of integral and intelligent clear water faucet specific complex NF membrane and preparation method thereof - Google Patents
A kind of integral and intelligent clear water faucet specific complex NF membrane and preparation method thereof Download PDFInfo
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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
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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
- B01D67/0079—Manufacture of membranes comprising organic and inorganic components
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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
- B01D69/10—Supported membranes; Membrane supports
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
Abstract
A kind of integral and intelligent clear water faucet specific complex NF membrane and preparation method thereof, belongs to technical field of sewage.NF membrane is composite membrane, including non-woven fabrics supporting layer, ultra-thin middle support layer and ultra-thin dense separation layers, and non-woven fabrics supporting layer connects the side of ultra-thin middle support layer, and ultra-thin dense separation layers are connected to the opposite side of ultra-thin middle support layer.The filter element volume of the present invention is less, and function is more, and flux is bigger, and clean-up effect is more preferable.Still there is higher flux in relatively low pressure, the small organic molecule beneficial to body and low price inorganic salt can be retained with selective removal tap water harmful substance, water outlet is in good taste, after heating up water, container does not produce incrustation scale, can meet user to aquifer yield and the demand of producing water water quality.The main direction of studying of high-flux nanofiltration membrane is modified stratum disjunctum, and the flux and separating property that rare research starts with improving NF membrane from supporting layer and intermediate layer.
Description
Technical field
The present invention relates to a kind of integral and intelligent clear water faucet specific complex NF membrane and preparation method thereof, belongs at sewage
Reason technical field.
Background technology
NF membrane is the new membrane separation technique between ultrafiltration and reverse osmosiss, so that its operating pressure is low, high water flux,
High rejection, while retaining the advantages such as the small organic molecule beneficial to body and low price inorganic salt, is gradually widely applied
In multiple fields.Prepare high retention, high-flux nanofiltration membrane to be always study hotspot, but how to realize both flux and rejection
Between a balance always difficult problem.At present the Main way of research be change formula system or by way of post processing come
Realize, but the flux magnitude of lifting NF membrane is limited, and due to reducing the consistency of desalination layer simultaneously so that the salt rejection rate of film
Decline more.
Water purifier is divided into microfiltration, ultra-filtration water purifier, reverse osmosis water purifier, nanofiltration water purification according to using the difference of filtering material
Device.Microfiltration, ultra-filtration water purifier have low pressure, the advantage of big flux, purifier size can be accomplished very little, such as purify the fire hose
Head, but the filtering accuracy of film is too poor.Reverse osmosiss, nanofiltration water purifier are very high to the degree of purification of tap water, but the size of machine
It is all than larger, less mainly due to membrane flux, need to load multigroup filter element, while arrange booster pump supercharging aquifer yield can just meet
User's request, and long-term drink pure water be unfavorable for it is healthy.
NF membrane is one kind new membrane seperation film between reverse osmosiss and ultrafiltration, also known as " loose type " reverse osmosis membrane.One
As NF membrane operating pressure scope in 0.2-1.5MPa, pore diameter range in several rans, it is how electrically charged on film, to bivalence or
The Organic substance of multivalent ion and molecular weight between 200-2000 has higher removal efficiency.Compared with other seperation films, nanofiltration
Film has that membrane flux is bigger, process infiltration is forced down, Selective Separation ion, operating pressure are low, system power demand is low excellent
Gesture, has been widely used in the fields such as water process, medicine, food and biology.
NF membrane mainly includes supporting layer, intermediate layer, stratum disjunctum.The main research that nanofiltration membrane flux can wherein be improved is right
Elephant is modified stratum disjunctum, and the flux that rare research starts with improving NF membrane from supporting layer and intermediate layer.The system of NF membrane
Standby technique mainly has following several：Phase inversion, weak solution coating, interfacial polymerization etc..
Interfacial polymerization prepares high flux polyamide nanofiltration membrane, mainly the addition various additives or inorganic in reaction system
Nanoparticle, reduces the degree of cross linking or thickness of desalination layer, improves the water flux of film by changing interface polymerization reaction degree.Example
Such as, by adding inorganic nano-particle in oil phase, based on its good Water transport effect, hydrophilic, charge effect and uniqueness
Pore passage structure, so as to realize the lifting of flux；Or add small molecule alcohol, ethers or ketone in water phase so as to oil
The acyl chlorides monomer of phase participates in reaction so as to reduce the degree of cross linking of desalination layer；Or pass through chemical surface modification in aftertreatment technology
Mode (surface such as some acids, bases, alcohols, sodium hypochlorite or surfactant is modified) realizing carrying for flux
Rise.Above-mentioned these methods are not notable to film properties lifting effect, and the reduction of desalination layer consistency causes the molecule of film to cut
Leave drop obvious.It is more difficult control stratum disjunctum thickness and uniform that phase inversion and weak solution coating prepare the barrier of NF membrane
Degree, the thicker cross-film resistance of thicknesses of layers realize high flux compared with disaster.SPSF compound of birdsing of the same feather flock together has preferable film forming ability, and
Nanofiltration or reverse osmosis membrane can be prepared by controlling inversion of phases process, but as the dense separation layers thickness for being formed is thicker, led to
Amount is not improved largely, or even the often below flux of polyamide nanofiltration membrane.Cross-linked coating is coated on counterdie is supported
NF membrane can be prepared, such as polyvinyl alcohol crosslinked coating, due to being unable to effective control crosslinking degree and coating layer thickness, its membrane flux is simultaneously
It is not high.
In the method for improving the flux of NF membrane, there are much shadows in rare research supporting layer and intermediate layer to lifting membrane flux
Ring.Chinese invention patent application CN105040275 discloses a kind of wet method base material non-woven fabrics for reverse osmosis membrane and its preparation
Method.The document does not mention impact of the non-woven fabrics to membrane flux, relate only to impact of the non-woven fabrics performance parameter to casting film and
A kind of method that letter makes non-woven fabrics.
The larger water purifier of volume mostly is on market, and intelligent tap is limited to tap structure form, its filtering material
Predominantly drainage screen, filtering material of activated carbon or supermicro filtration membrane silk, as the filtering accuracy of filter material is very low, the tap can not be effective
Realize that tap water deep layer is purified.
Chinese invention patent application 201510099468.5 and 201520162180.3 discloses a kind of intelligence of water purification
Faucet, but filter material is mainly drainage screen or filtering material of activated carbon, it is impossible to realize the deep purifying of tap water.
Be used for tap water purifying in the market mostly is water purifier, and the intelligent clear water faucet of poly- high filtering precision is little.
Purification faucet overall dimensions are less, and filter material loadings are very limited, and which mostly is activated carbon, PP cottons with filter material, filter filtering accuracy
It is poor, it is impossible to realize that the deep purifying to tap water is processed.And existing nanofiltration membrane flux is low cannot be applied to intelligent Gynamide
Head.
The content of the invention
In order to overcome the deficiencies in the prior art, the present invention to provide a kind of integral and intelligent clear water faucet specific complex NF membrane
And preparation method thereof.
A kind of integral and intelligent clear water faucet specific complex nanofiltration membrane preparation method, NF membrane is composite membrane, including nonwoven
Cloth supporting layer, ultra-thin middle support layer and ultra-thin dense separation layers, non-woven fabrics supporting layer connect the side of ultra-thin middle support layer,
Ultra-thin dense separation layers are connected to the opposite side of ultra-thin middle support layer；Containing following steps；
It is prepared by ultra-thin middle support layer：Polymer feed liquid is quantitatively coated on support layer surface by slit coating head, by adjusting
Section coating head with the distance and material liquid layer thickness for supporting interlayer adjusting supporting layer thickness, afterwards through gel groove, rinse bath, quench
Fiery groove makes diaphragm clean and qualitative, that is, obtain the compound counterdie of ultrafiltration of functionalization；
It is prepared by ultra-thin dense separation layers：By counterdie first by water phase maceration tank, surpass in described through the purging of air knife
One layer of aqueous solution thin film is formed on filter bottom film；Then by oil phase slit coating head, by oil phase quantitatively coating and counterdie, make water phase
There is interface polymerization reaction with oil phase, interface is adjusted by the distance and material liquid layer thickness of regulation coating head and support interlayer and is gathered
Close the crosslinking degree and film forming thickness of reaction.
Finally by the baking oven that temperature is 60-110 DEG C, optimum temperature is 80 DEG C, is proceeded under this temperature conditions
Interface polymerization reaction 2-4min, optimum reacting time 3min, form complete polyamide desalination layer on described ultrafiltration counterdie.
A kind of integral and intelligent clear water faucet specific complex nanofiltration membrane preparation method, containing following steps；
The preparation technology of stratum disjunctum, extrudes quantitative cladding process using slit；
It is 0.4MPa～0.6MPa in pressure, temperature is 25 DEG C, during hardness is the municipal tap water of 200～300mg/L,
The permeant flux of 1812 type membrane component of special NF membrane is 175LMH, and hardness is 55mg/l；
The permeant flux of special NF membrane is 210LMH, and hardness is 60mg/l；
The permeant flux of special NF membrane is 180LMH, and hardness clearance is 70%.
Integral and intelligent clear water faucet specific complex NF membrane, NF membrane is composite membrane, including non-woven fabrics supporting layer, ultra-thin
Middle support layer and ultra-thin dense separation layers, non-woven fabrics supporting layer connect the side of ultra-thin middle support layer, ultra-thin fine and close separation
Layer is connected to the opposite side of ultra-thin middle support layer.
Non-woven fabrics supporting layer is functionalization non-woven fabrics, and overall is in single or multiple lift structure, its thickness 10 μm to 100 μm it
Between, unit area grammes per square metre is in 20g/m2To 100g/m2Between, air permeability 0.1cc/cm2/ sec to 13cc/cm2Between/sec；
The material of functionalization non-woven fabrics includes polyethylene terephthalate, polyadipate hexanediol ester, polypropylene, poly-
Ethylene, polyacrylonitrile, polystyrene, polyamide, Kynoar, polysulfones or its mixture；Functionalization non-woven fabrics include but not
It is limited to activated carbon fiber, exchanger resin fiber, nanometer silver etc.；
Functionalization non-woven fabrics including but not limited to removal chlorine residue, Adsorption of Heavy Metal Ions and small organic molecule, antibiotic property,
Acid and alkali-resistance etc.；
The fiber of the supporter of functionalization non-woven fabrics include but is not limited to long fibre, chopped fiber, fine fibre and crude fibre or
Its mixture, fibre diameter is between 0.05 μm to 50 μm.
Intermediate layer is ultra-thin middle support layer ultra-thin, that hydrophilic is splendid, and ultra-thin middle support layer is polymeric layer, thickness
Between 10 μm to 40 μm；The section pore structure of ultra-thin middle support layer is symmetric form or asymmetric spongy hole or finger-like
Pore structure or its mixed type pore structure, pore diameter range is between 0.001 μm to 10 μm；
The polymer of polymeric layer includes：Polrvinyl chloride, polyacrylonitrile, polysulfones, SPSF, polyether sulfone, sulfonated polyether
Sulfone, polyimides, polyamide, polyvinyl alcohol or one of which or two or more mixture.
The additive of polymer includes organic additive and inorganic additive, and organic additive includes the poly- second of different molecular weight
Glycol, isopropanol, different molecular weight polyvinylpyrrolidone, Tween, cellulose or one of which or two or more mixing
Thing；
Inorganic additive includes CNT, nano titanium oxide, nanometer titanium dioxide aluminum, activated carbon, lithium chloride wherein
Plant or two or more mixture.
Polyamide membrane of the ultra-thin dense separation layers for piperazine system, the aqueous phase monomers of polyamide membrane include piperazine, additive,
Acid absorbent, wetting agent, piperazine concentration between 0.4%～1.5%,
Additive is nano graphene oxide, and content is 200ppm～500ppm,
Acid absorbent is organic amine, and content is 0.5～3%,
Wetting agent is small molecule alcohol, and content is 0.5～4%；
Aqueous phase monomers pH is 8～11；The oil phase monomer of polyamide membrane is mixed with m-phthaloyl chloride for pyromellitic trimethylsilyl chloride
Solution, its ratio are 0～1；
Additive is DMI, and its content is 0.01%～1%.
It is an advantage of the present invention to provide a kind of integral and intelligent clear water faucet specific complex NF membrane, filter element volume is more
Little, function is more, and flux is bigger, and clean-up effect is more preferable.Still there is higher flux in relatively low pressure, can be with selective removal originally
Water harmful substance, retains the small organic molecule beneficial to body and low price inorganic salt, and water outlet is in good taste, and after heating up water, container is not produced
Scale, user can be met to aquifer yield and the demand of producing water water quality.The main direction of studying of high-flux nanofiltration membrane is modified point
Absciss layer, and the flux that rare research starts with improving NF membrane from supporting layer and intermediate layer.
Composite nanometer filtering film includes non-woven fabrics supporting layer, ultra-thin middle support layer and ultra-thin dense separation layers, in terms of three
The comprehensive water flux for lifting NF membrane, while having high rejection.Ultra-thin middle support layer can make the dress of element under same size
Fill out area more, aquifer yield is big.Non-woven fabrics supporting layer not only plays a supportive role, and also gives its functionalization and acts on, remaining including removing
Chlorine, absorbing calcium ions and magnesium ions, antibiotic property；, by interface modification while flux is improved, rejection is constant for ultra-thin dense separation layers
Or be slightly decreased.Film preparation technique employs advanced slit and extrudes quantitative cladding process, can accurately control coating layer thickness.
Specific embodiment
Obviously, those skilled in the art belong to the guarantor of the present invention based on many modifications and variations done by spirit of the invention
Shield scope.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singulative " " used herein, "
It is individual ", " " and " being somebody's turn to do " may also comprise plural form.It is to be further understood that the wording " including " used in this specification is
Refer to existing characteristics, integer, step, operation, element and/or component, but it is not excluded that existing or adding one or more other
Feature, integer, step, operation, element, component and/or their group.It should be understood that when title element, component are "connected" to separately
When one element, component, it can be directly connected to other elements or component, or can also there is intermediary element or group
Part.Wording "and/or" used herein includes one or more associated any cells for listing item and all combinations.
Those skilled in the art of the present technique are appreciated that unless otherwise defined all terms used herein (include technology art
Language and scientific terminology) with art of the present invention in those of ordinary skill general understanding identical meaning.
For ease of the understanding to the embodiment of the present invention, explanation will be further explained below, and each embodiment will be not
Constitute the restriction to the embodiment of the present invention.
Embodiment 1：
The invention provides a kind of integral and intelligent clear water faucet specific complex NF membrane and preparation method thereof.Composite nanometer filter
Film is fast as the water purification mould of faucet, still has higher flux at low pressures, can be with selective removal tap water nuisance
Matter, retains the small organic molecule beneficial to body and low price inorganic salt, and water outlet is in good taste, can reduce hardness of water, after heating up water
Container does not produce incrustation scale.
Integral and intelligent clear water faucet specific complex nanofiltration membrane preparation method, NF membrane is composite membrane, including non-woven fabrics
Support layer, ultra-thin middle support layer and high-performance stratum disjunctum.
A kind of integral and intelligent clear water faucet specific complex NF membrane, including the ultra-thin supporting layer of functionalization, thin polymer
Middle support layer and very thin dense separation layers.
The ultra-thin supporting layer of functionalization is the non-woven fabrics containing resin fibre, and adsorbable calcium ions and magnesium ions, thickness are 90 μm, are breathed freely
Degree is about 2.0cc/c ㎡ .s；Thin polymer intermediate layer is the compound polysulfones ultrafiltration layer containing inorganic nano-particle, by slit
Extrusion Coating machine coated and molded, thickness are 35 μm, and pore-size distribution is between 0.2 μm～0.5 μm；Ultra-thin dense separation layers are piperazine
The polyamide membrane of system, its aqueous phase monomers include piperazine, additive, acid absorbent, wetting agent, and piperazine concentration is 1%, its addition
Agent is nano graphene oxide, and content is 500ppm, and acid absorbent is organic amine, and content is 2%, and guarantor's hole agent is small molecular alcohol
Class, content are 1.5%；Aqueous phase monomers pH is 10；Oil phase monomer is pyromellitic trimethylsilyl chloride and m-phthaloyl chloride mixed solution, its
Ratio is 0.8；Oil phase additive is DMI, and its content is 0.3%；
The preparation technology of stratum disjunctum, extrudes quantitative cladding process using slit.It is 0.4MPa in pressure, temperature is 25 DEG C, firmly
Spend in the municipal tap water for 200～300mg/L, the permeant flux of 1812 type membrane component of special NF membrane is 175LMH, hardness
For 55mg/l.
Embodiment 2：
Specific complex NF membrane, including the ultra-thin supporting layer of functionalization, thin polymer middle support layer and very thin densification point
Absciss layer.
The ultra-thin supporting layer of functionalization is the non-woven fabrics containing resin fibre, and adsorbable calcium ions and magnesium ions, thickness are 40 μm, are breathed freely
Degree is about 2.4cc/c ㎡ .s；Thin polymer intermediate layer is the compound polysulfones ultrafiltration layer containing inorganic nano-particle, by slit
Extrusion Coating machine coated and molded, thickness can accomplish 15 μm, and pore-size distribution is between 0.5 μm～0.1 μm；Ultra-thin dense separation layers are
The polyamide membrane of piperazine system, its aqueous phase monomers include piperazine, additive, acid absorbent, wetting agent, and piperazine concentration is 1%, its
Additive is nano graphene oxide, and content is 500ppm, and acid absorbent is organic amine, and content is 2%, and guarantor's hole agent is small molecule
Alcohols, content are 1%；Aqueous phase monomers pH is 10；Oil phase monomer is pyromellitic trimethylsilyl chloride and m-phthaloyl chloride mixed solution, its
Ratio is 05；Oil phase additive is DMI, and its content is 0.3%；
The preparation technology of stratum disjunctum, extrudes quantitative cladding process using slit.It is 0.4MPa in pressure, temperature is 25 DEG C, firmly
Spend in the municipal tap water for 200～300mg/L, the permeant flux of 1812 type membrane component of special NF membrane is 250LMH, hardness
For 68mg/l.
Embodiment 3：
Specific complex NF membrane, including the ultra-thin supporting layer of functionalization, thin polymer middle support layer and very thin densification point
Absciss layer.
The ultra-thin supporting layer of functionalization is the non-woven fabrics containing resin fibre, and adsorbable calcium ions and magnesium ions, thickness are 57 μm, are breathed freely
Degree is about 2.1cc/c ㎡ .s；Thin polymer intermediate layer is the compound polysulfones ultrafiltration layer containing inorganic nano-particle, by slit
Extrusion Coating machine coated and molded, thickness can accomplish 25 μm, and pore-size distribution is between 0.05 μm～1 μm；Ultra-thin dense separation layers are
The polyamide membrane of piperazine system, its aqueous phase monomers include piperazine, additive, acid absorbent, wetting agent, and piperazine concentration is 0.7%,
Additive is nano graphene oxide, and content is 500ppm, and acid absorbent is organic amine, and content is 2.5%, and it is little point to protect hole agent
Sub- alcohols, content are 1%；Aqueous phase monomers pH is 10.5；Oil phase monomer mixes molten with m-phthaloyl chloride for pyromellitic trimethylsilyl chloride
Liquid, its ratio are 1；Oil phase additive is DMI, and its content is 0.1%；
The preparation technology of stratum disjunctum, extrudes quantitative cladding process using slit.It is 0.6MPa in pressure, temperature is 25 DEG C, firmly
Spend in the municipal tap water for 200～300mg/L, the permeant flux of special NF membrane is 210LMH, and hardness is 60mg/l.
Embodiment 4：
Specific complex NF membrane, including the ultra-thin supporting layer of functionalization, thin polymer middle support layer and very thin densification point
Absciss layer.
The ultra-thin supporting layer of functionalization is the non-woven fabrics containing resin fibre, and adsorbable calcium ions and magnesium ions, thickness are 40 μm, are breathed freely
Degree is about 2.3cc/c ㎡ .s；Thin polymer intermediate layer is the compound polysulfones ultrafiltration layer containing inorganic nano-particle, by slit
Extrusion Coating machine coated and molded, thickness can accomplish 30 μm, and pore-size distribution is between 0.02 μm～5 μm；Ultra-thin dense separation layers are
The polyamide membrane of piperazine system, its aqueous phase monomers include piperazine, additive, acid absorbent, wetting agent, and piperazine concentration is 0.9%,
Additive is nano graphene oxide, and content is 300ppm, and acid absorbent is organic amine, and content is 0.9%, and it is little point to protect hole agent
Sub- alcohols, content are 1%；Aqueous phase monomers pH is 10；Oil phase monomer is pyromellitic trimethylsilyl chloride and m-phthaloyl chloride mixed solution,
Its ratio is 1；Oil phase additive is DMI, and its content is 0.2%；
The preparation technology of stratum disjunctum, extrudes quantitative cladding process using slit.It is 0.6MPa in pressure, temperature is 25 DEG C, firmly
Spend in the municipal tap water for 200～300mg/L, the permeant flux of special NF membrane is 180LMH, and hardness clearance is 70%.
Finally it should be noted that：Obviously, above-described embodiment is only intended to clearly illustrate the application example, and and
The non-restriction to teachings herein.
The technical scheme of replacement can using similar with the structure of modifier cited by the application, including it is various more substantially
The salt of sub- anionic group and alkali metal cation group composition is integrated, is and the content within the scope of the application.
For those of ordinary skill in the field, other not similar shapes can also be made on the basis of the above description
The change or variation of formula.There is no need to be exhaustive to all of embodiment.And thus it is amplified it is aobvious and easy
Among protection domain of the change or variation seen still in the application type.
Claims (10)
1. integral and intelligent clear water faucet specific complex NF membrane, it is characterised in that NF membrane is composite membrane, including non-woven fabrics
Support layer, ultra-thin middle support layer and ultra-thin dense separation layers, non-woven fabrics supporting layer connect the side of ultra-thin middle support layer, ultra-thin
Dense separation layers are connected to the opposite side of ultra-thin middle support layer.
2. integral and intelligent clear water faucet specific complex NF membrane according to claim 1, it is characterised in that non-woven fabrics
Support layer is functionalization non-woven fabrics, and overall is in single or multiple lift structure, its thickness between 10 μm to 100 μm, unit area grammes per square metre
In 20g/m2To 100g/m2Between, air permeability 0.1cc/cm2/ sec to 13cc/cm2Between/sec.
3. integral and intelligent clear water faucet specific complex NF membrane according to claim 1, it is characterised in that functionalization without
The material for spinning cloth includes polyethylene terephthalate, polyadipate hexanediol ester, polypropylene, polyethylene, polyacrylonitrile, poly-
Styrene, polyamide, Kynoar, polysulfones or its mixture；Functionalization non-woven fabrics are including but not limited to activated carbon fiber, friendship
Change resin fibre, nanometer silver, ion sieve, molecular sieve.
4. integral and intelligent clear water faucet specific complex NF membrane according to claim 1, it is characterised in that ultra-thin centre
Supporting layer is polymeric layer, and thickness is between 10 μm to 40 μm；The section pore structure of ultra-thin middle support layer is symmetric form or non-
The spongy hole of symmetric form or finger-like pore structure or its mixed type pore structure, pore diameter range is between 0.001 μm to 10 μm；
The polymer of polymeric layer includes：Kynoar, polrvinyl chloride, polyacrylonitrile, polysulfones, SPSF, polyether sulfone, sulphur
Change polyether sulfone, polyimides, polyamide, polyvinyl alcohol or one of which or two or more mixture.
5. integral and intelligent clear water faucet specific complex NF membrane according to claim 4, it is characterised in that polymer
Additive includes organic additive and inorganic additive, and organic additive includes different molecular weight Polyethylene Glycol, isopropanol, difference
Molecular weight polyethylene ketopyrrolidine, tween, ketone, ethers, cellulose or one of which or two or more mixture；
Inorganic additive includes CNT, nano titanium oxide, nanometer titanium dioxide aluminum, activated carbon, lithium chloride, graphene oxide
One of which or two or more mixture.
6. integral and intelligent clear water faucet specific complex NF membrane according to claim 1, it is characterised in that ultra-thin densification
Polyamide membrane of the stratum disjunctum for piperazine system, the aqueous phase monomers of polyamide membrane include piperazine, additive, acid absorbent, wetting agent,
Piperazine concentration between 0.4%～1.5%,
Additive is nano graphene oxide, and content is 200ppm～500ppm,
Acid absorbent is organic amine, and content is 0.5～3%,
Wetting agent is small molecule alcohol, and content is 0.5～4%；
Aqueous phase monomers pH is 8～11；The oil phase monomer of polyamide membrane is pyromellitic trimethylsilyl chloride and m-phthaloyl chloride mixed solution,
Its ratio is 0～1；
Additive is DMI, and its content is 0.01%～1%.
7. integral and intelligent clear water faucet specific complex NF membrane according to claim 1, it is characterised in that functionalization without
Spin cloth and including but not limited to remove chlorine residue, Adsorption of Heavy Metal Ions and small organic molecule, antibiotic property, acid and alkali-resistance, resistance to oxidation.
8. integral and intelligent clear water faucet specific complex NF membrane according to claim 1, it is characterised in that functionalization without
The fiber for spinning the supporter of cloth includes but is not limited to long fibre, chopped fiber, fine fibre and crude fibre or its mixture, fibre diameter
Between 0.05 μm to 50 μm.
9. a kind of integral and intelligent clear water faucet specific complex nanofiltration membrane preparation method, NF membrane is composite membrane, including non-woven fabrics
Supporting layer, ultra-thin middle support layer and ultra-thin dense separation layers, non-woven fabrics supporting layer connect the side of ultra-thin middle support layer, surpass
Thin dense separation layers are connected to the opposite side of ultra-thin middle support layer；It is characterized in that containing following steps；
It is prepared by ultra-thin middle support layer：Polymer feed liquid is quantitatively coated on support layer surface by slit coating head, is applied by adjusting
Head adjusts supporting layer thickness with the distance and material liquid layer thickness for supporting interlayer, afterwards through gel groove, rinse bath, quenching tank
Diaphragm is cleaned and qualitative, that is, obtain the compound counterdie of ultrafiltration of functionalization；
It is prepared by ultra-thin dense separation layers：By counterdie first by water phase maceration tank, through air knife purging at described ultrafiltration bottom
One layer of aqueous solution thin film is formed on film；Then by oil phase slit coating head, by oil phase quantitatively coating and counterdie, water phase is made with oil
Mutually there is interface polymerization reaction, it is anti-to adjust interfacial polymerization by the distance and material liquid layer thickness that adjust coating head with support interlayer
The crosslinking degree answered and film forming thickness；Finally by the baking oven that temperature is 60-110 DEG C, optimum temperature is 80 DEG C, in this temperature
Under the conditions of proceed interface polymerization reaction 2-4min, optimum reacting time 3min, form complete on described ultrafiltration counterdie
Polyamide desalination layer.
10. a kind of integral and intelligent clear water faucet specific complex nanofiltration membrane preparation method, it is characterised in that containing following steps；
The preparation technology of stratum disjunctum, extrudes quantitative cladding process using slit；
It is 0.4MPa～0.6MPa in pressure, temperature is 25 DEG C, during hardness is the municipal tap water of 200～300mg/L,
The permeant flux of 1812 type membrane component of special NF membrane is 175LMH, and hardness is 55mg/l；
Or the permeant flux of special NF membrane is 210LMH, hardness is 60mg/l；
Or the permeant flux of special NF membrane is 180LMH, hardness clearance is 70%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611026600.0A CN106552514A (en) | 2016-11-11 | 2016-11-11 | A kind of integral and intelligent clear water faucet specific complex NF membrane and preparation method thereof |
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| CN201611026600.0A CN106552514A (en) | 2016-11-11 | 2016-11-11 | A kind of integral and intelligent clear water faucet specific complex NF membrane and preparation method thereof |
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| CN106986479A (en) * | 2017-05-18 | 2017-07-28 | 西藏神州瑞霖环保科技股份有限公司 | A kind of strong brine evaporative crystallization pretreatment system |
| CN107029562A (en) * | 2017-05-12 | 2017-08-11 | 大连理工大学 | A kind of composite nanometer filtering film based on MXene and preparation method thereof |
| CN108380047A (en) * | 2018-02-01 | 2018-08-10 | 北京碧水源膜科技有限公司 | Graphene oxide composite nano filter membrane and preparation method thereof with ion selectivity separation |
| CN108421422A (en) * | 2018-01-18 | 2018-08-21 | 方大炭素新材料科技股份有限公司 | A kind of Nano filtering composite membrane and preparation method thereof of selectivity ion isolation |
| CN108525532A (en) * | 2018-04-25 | 2018-09-14 | 天津碧水源膜材料有限公司 | Preparation method, reverse osmosis membrane and the reverse osmosis membrane preparation system of high-flux reverse osmosis membrane |
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| CN110813093A (en) * | 2019-11-28 | 2020-02-21 | 北京碧水源科技股份有限公司 | Ammonium ion selective permeation nanofiltration membrane, preparation method, application of ammonium ion selective permeation nanofiltration membrane in sewage deammoniation, and selective deammoniation device |
| CN111214965A (en) * | 2018-11-26 | 2020-06-02 | 中国科学院苏州纳米技术与纳米仿生研究所 | Reverse osmosis membrane and preparation method and application thereof |
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| CN103492060A (en) * | 2011-04-01 | 2014-01-01 | 东丽株式会社 | Composite semipermeable membrane, composite semipermeable membrane element, and method for manufacturing composite semipermeable membrane |
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Patent Citations (1)
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| CN103492060A (en) * | 2011-04-01 | 2014-01-01 | 东丽株式会社 | Composite semipermeable membrane, composite semipermeable membrane element, and method for manufacturing composite semipermeable membrane |
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| CN107029562A (en) * | 2017-05-12 | 2017-08-11 | 大连理工大学 | A kind of composite nanometer filtering film based on MXene and preparation method thereof |
| CN107029562B (en) * | 2017-05-12 | 2020-04-07 | 大连理工大学 | MXene-based composite nanofiltration membrane and preparation method thereof |
| CN106986479A (en) * | 2017-05-18 | 2017-07-28 | 西藏神州瑞霖环保科技股份有限公司 | A kind of strong brine evaporative crystallization pretreatment system |
| CN108421422A (en) * | 2018-01-18 | 2018-08-21 | 方大炭素新材料科技股份有限公司 | A kind of Nano filtering composite membrane and preparation method thereof of selectivity ion isolation |
| CN108380047A (en) * | 2018-02-01 | 2018-08-10 | 北京碧水源膜科技有限公司 | Graphene oxide composite nano filter membrane and preparation method thereof with ion selectivity separation |
| CN108525532A (en) * | 2018-04-25 | 2018-09-14 | 天津碧水源膜材料有限公司 | Preparation method, reverse osmosis membrane and the reverse osmosis membrane preparation system of high-flux reverse osmosis membrane |
| CN108905625A (en) * | 2018-07-20 | 2018-11-30 | 安徽原上草节能环保科技有限公司 | A kind of reverse osmosis membrane and its preparation method and application |
| CN111214965A (en) * | 2018-11-26 | 2020-06-02 | 中国科学院苏州纳米技术与纳米仿生研究所 | Reverse osmosis membrane and preparation method and application thereof |
| CN110813093A (en) * | 2019-11-28 | 2020-02-21 | 北京碧水源科技股份有限公司 | Ammonium ion selective permeation nanofiltration membrane, preparation method, application of ammonium ion selective permeation nanofiltration membrane in sewage deammoniation, and selective deammoniation device |
| CN113058430A (en) * | 2021-03-30 | 2021-07-02 | 浙江易膜新材料科技有限公司 | High-speed production method of reverse osmosis composite membrane |
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Application publication date: 20170405 |