CN107344075A - A kind of preparation method of electrostatic spinning hollow-fibre membrane - Google Patents
A kind of preparation method of electrostatic spinning hollow-fibre membrane Download PDFInfo
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- CN107344075A CN107344075A CN201710727985.1A CN201710727985A CN107344075A CN 107344075 A CN107344075 A CN 107344075A CN 201710727985 A CN201710727985 A CN 201710727985A CN 107344075 A CN107344075 A CN 107344075A
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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
- B01D71/40—Polymers of unsaturated acids or derivatives thereof, e.g. salts, amides, imides, nitriles, anhydrides, esters
- B01D71/42—Polymers of nitriles, e.g. polyacrylonitrile
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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
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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
- B01D69/08—Hollow fibre membranes
- B01D69/087—Details relating to the spinning process
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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
- B01D71/08—Polysaccharides
- B01D71/12—Cellulose derivatives
- B01D71/14—Esters of organic acids
- B01D71/16—Cellulose acetate
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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
- B01D71/26—Polyalkenes
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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
- B01D71/30—Polyalkenyl halides
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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
- B01D71/30—Polyalkenyl halides
- B01D71/32—Polyalkenyl halides containing fluorine atoms
- B01D71/34—Polyvinylidene fluoride
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/48—Polyesters
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/66—Polymers having sulfur in the main chain, with or without nitrogen, oxygen or carbon only
- B01D71/68—Polysulfones; Polyethersulfones
Abstract
The invention discloses a kind of preparation method of electrostatic spinning hollow-fibre membrane, comprise the following steps：A. the preparation of hollow woven tube：Fiber filament is woven into by hollow woven tube using control of two-dimensional braided technology；B. the preparation of spinning solution：The additive of 5~20wt% fluoropolymer resin and 0~10wt% is dissolved in 70~95wt% solvent and is configured to spinning solution, each component sum is 100wt%；C. the preparation of electrostatic spinning hollow-fibre membrane：The hollow woven tube that step A is obtained is nested in filament reception device；In the spinning solution injection device for spinning that step B is obtained, after electrostatic spinning and air curing, the solidified forming in coagulating bath, electrostatic spinning hollow-fibre membrane is obtained.This method prepares hollow-fibre membrane using control of two-dimensional braided technology with the method that method of electrostatic spinning is combined.Prepared electrostatic spinning hollow-fibre membrane is mainly made up of reinforcement and separating layer, while the advantages of have high porosity, high separation accuracy and high intensity concurrently.
Description
Technical field
The present invention relates to technical field of membrane, specially a kind of preparation method of electrostatic spinning hollow-fibre membrane.
Background technology
Electrostatic spinning technique can continuous production diameter sub-micron even nano level polymer fiber, fibre diameter can
Control, has larger specific surface area, shows good functional characteristic, and due to its simple experimental provision, it is relatively low into
This, higher yield and it is easily controllable the advantages that, cause the great interest of researchers for many years.
Hollow-fibre membrane is one of principal mode of seperation film, compared with the forms such as plate membrane, there is unit bodies integrated membrane to have
Imitate area big, good separating effect, it is compact-sized and easy of integration the advantages that.Prepare hollow-fibre membrane uses solution-polymerized SBR more at present
Method, melt spinning pulling method and thermally induced phase separation；
Researcher prepares doughnut mainly by fibrous template method and coaxial electrostatic using the method for electrostatic spinning before
Spinning.It is template using fiber made from electrostatic spinning, in fiber surface self-assembling function material, then removes core layer material
Remove, obtain corresponding doughnut, but this method is relatively complicated, to pass through the processes such as electrostatic spinning, self assembly and removing template.
And coaxial electrostatic spinning method is then after core shell structure fiber is made, removed by the method choice of extraction or high-temperature calcination
Core layer material, you can obtain corresponding doughnut and prepare doughnut.Application number 201210217561.8 is disclosed in one kind
The preparation method of empty polymer nanofiber, it is molten with polymer using the mixture of glycerine or G ＆ W as interior phase electrospinning liquid
Liquid prepares hollow Nano fiber in use as foreign minister's electrospinning liquid by coaxial electrostatic spinning, but its operating procedure is relatively complicated, needs
Two kinds of different solution are prepared respectively as shell solution and stratum nucleare solution, it is also necessary to which the step such as follow-up washing, extraction is come
Core layer material is removed, to obtain the fiber of hollow structure.The material of stratum nucleare can not remove completely sometimes simultaneously, remaining stratum nucleare
Material may have an impact to the performance of doughnut.
The content of the invention
In view of the shortcomings of the prior art, the technical problem that the present invention intends to solve is to provide a kind of electrostatic spinning doughnut
The preparation method of film.This method prepares hollow-fibre membrane using control of two-dimensional braided technology with the method that method of electrostatic spinning is combined.Institute
Electrostatic spinning hollow-fibre membrane is prepared mainly to be made up of reinforcement and separating layer, at the same have concurrently high porosity, high separation accuracy and
The advantages of high intensity.
The technical scheme that the present invention solves the technical problem is to provide a kind of preparation side of electrostatic spinning hollow-fibre membrane
Method, it is characterised in that comprise the following steps：
A. the preparation of hollow woven tube：Fiber filament is woven into by hollow woven tube using control of two-dimensional braided technology, and with this
Reinforcement of the hollow woven tube as electrostatic spinning hollow-fibre membrane；
B. the preparation of spinning solution：The additive of 5~20wt% fluoropolymer resin and 0~10wt% is dissolved in 70~
Spinning solution is configured in 95wt% solvent, each component sum is 100wt%；
C. the preparation of electrostatic spinning hollow-fibre membrane：The hollow woven tube that step A is obtained is nested in electrostatic spinning process
Filament reception device on, the reinforcement as electrostatic spinning hollow-fibre membrane；The spinning solution that step B is obtained injects Static Spinning
In the device for spinning of silk technique, after electrostatic spinning and air curing, the solidified forming in coagulating bath, it is hollow to obtain electrostatic spinning
Tunica fibrosa.
In step A, fiber filament be in polyacrylonitrile filament, PFY, polyamide filaments or polypropylene filament extremely
Few one kind.
In step B, the polymer tree is polyacrylonitrile, Kynoar, cellulose acetate, polyvinyl chloride, polyester, poly-
At least one of acid amides, polypropylene, polysulfones or polyether sulfone；The solvent is water, DMAC N,N' dimethyl acetamide, N, N- dimethyl
At least one of formamide, 1-METHYLPYRROLIDONE, acetone, tetrahydrofuran or acetic acid；The additive is polyethylene glycol, gathered
At least one of vinylpyrrolidone, potassium chloride, calcium chloride, sodium chloride, lithium chloride, lithium bromide or lithium nitrate.
In step C, the coagulating bath is the aqueous solution of water or solvent；Spinning voltage in electrostatic spinning process for 10~
30kV, charging rate are 1~15 μ L/min, receive 5~20cm of distance, reception device 100~800rpm of rotating speed, spinning syringe needle
Flutter rate is 50~350cm/min.
Compared with prior art, beneficial effect of the present invention is：
(1) this method prepares hollow-fibre membrane using control of two-dimensional braided technology with the method that method of electrostatic spinning is combined.It is made
Standby electrostatic spinning hollow-fibre membrane is mainly made up of reinforcement and separating layer, while has high porosity, high separation accuracy and height concurrently
The advantages of intensity.Separating layer is unique nanometer fibrous pore structure, constructs micro-nano structure, has high porosity and compares surface
Product, reinforcement are the hollow woven tube of high modulus and strength.
(2) it is high in sub-micron even nano level electrospun polymer fibers and the high film of hollow woven tube to combine diameter
The characteristics of intensity, hollow woven tube is prepared as reinforcement, using filament receiving device, fixed pre- place using control of two-dimensional braided technology
The reinforcement managed, by method of electrostatic spinning, spinning prepares hollow-fibre membrane, separating layer and enhancing body interface knot in reinforcement
Get togather, thickness is controllable, and structure is adjustable.
(3) pretreatment of hollow woven tube, hollow woven tube is carried out using low concentration spinning liquor or neat solvent
Fully infiltration so that the fiber in hollow woven tube is swelled under its effect, improves hollow woven tube and surface separation layer
Bond strength.When wherein fiber filament and fluoropolymer resin are same material, gained electrostatic spinning hollow-fibre membrane it is inside and outside
Compatibility difference is not present in the host phase material of layer, can make to combine even closer between inside and outside layer, there is good interface cohesion
State, not only there is higher fracture strength, and there is higher peel strength, effectively improve the mechanics of hollow-fibre membrane
Performance, improve the service life of hollow-fibre membrane.
(4) this method processing step is simple, and controllability is strong, easy to operate, and the hollow-fibre membrane supportive prepared is good, breaks
Resistance to spalling is high, and film surface has unique nanometer fibrous pore structure, and porosity is high, and specific surface area is big, and achievable multicomponent is answered
Close, multilayered structure collaboration.
Brief description of the drawings
Fig. 1 is the Electronic Speculum for film surface × 40 that the preparation method embodiment 1 of electrostatic spinning hollow-fibre membrane of the present invention obtains
Figure；
Fig. 2 is the electricity for film surface × 3000 that the preparation method embodiment 1 of electrostatic spinning hollow-fibre membrane of the present invention obtains
Mirror figure；
Fig. 3 is the electricity for film cross section × 40 that the preparation method embodiment 1 of electrostatic spinning hollow-fibre membrane of the present invention obtains
Mirror figure；
Fig. 4 is the Electronic Speculum for film surface × 30 that the preparation method embodiment 4 of electrostatic spinning hollow-fibre membrane of the present invention obtains
Figure；
Fig. 5 is the Electronic Speculum for film surface × 700 that the preparation method embodiment 4 of electrostatic spinning hollow-fibre membrane of the present invention obtains
Figure；
Fig. 6 is the electricity for film cross section × 100 that the preparation method embodiment 4 of electrostatic spinning hollow-fibre membrane of the present invention obtains
Mirror figure；
Embodiment
The specific embodiment of the present invention is given below.Specific embodiment is only used for that the present invention is further described, unlimited
The application scope of the claims processed.
The invention provides a kind of preparation method of electrostatic spinning hollow-fibre membrane, it is characterised in that comprises the following steps：
A. the preparation of hollow woven tube：Fiber filament is woven into by hollow woven tube using control of two-dimensional braided technology, and with this
Reinforcement of the hollow woven tube as electrostatic spinning hollow-fibre membrane；
Fiber filament is at least one of polyacrylonitrile filament, PFY, polyamide filaments or polypropylene filament；Compile
It is 1~3mm to knit pitch, and control of two-dimensional braided machine rotating speed is 500~1500rpm, and pitch is smaller, and hollow woven tube is thinner；
B. the preparation of spinning solution：The additive of 5~20wt% fluoropolymer resin and 0~10wt% is dissolved in 70~
Spinning solution is configured in 95wt% solvent, each component sum is 100wt%；
The fluoropolymer resin is conventional fibre-forming polymer, such as polyacrylonitrile, Kynoar, cellulose acetate, poly-
At least one of vinyl chloride, polyester, polyamide, polypropylene, polysulfones or polyether sulfone；The solvent is above-mentioned fibre-forming polymer
Good solvent, as water, DMA, DMF, 1-METHYLPYRROLIDONE, acetone, tetrahydrofuran or
At least one of acetic acid；The additive is the pore-foaming agent of conventional phase separation method film, such as polyethylene glycol, poly- second
At least one of alkene pyrrolidone, potassium chloride, calcium chloride, sodium chloride, lithium chloride, lithium bromide or lithium nitrate；
C. the preparation of electrostatic spinning hollow-fibre membrane：The hollow woven tube that step A is obtained is nested in electrostatic spinning process
Filament reception device on, the reinforcement as electrostatic spinning hollow-fibre membrane；The spinning solution that step B is obtained injects Static Spinning
In the device for spinning of silk technique, after electrostatic spinning and air curing, the solidified forming in coagulating bath, it is hollow to obtain electrostatic spinning
Tunica fibrosa.
Spinning voltage in electrostatic spinning process is 10~30kV, and charging rate is 1~15 μ L/min, reception distance 5~
20cm, reception device 100~800rpm of rotating speed, the flutter rate of spinning syringe needle is 50~350cm/min；
The coagulating bath is the aqueous solution of water or solvent.
In step C, preferable method is to be nested in the thin of electrostatic spinning process in the hollow woven tube for obtaining step A
Before in silk reception device, first the hollow woven tube that step A is obtained first can be pre-processed；Specifically：C. electrostatic spinning
The preparation of hollow-fibre membrane：The hollow woven tube that step A is obtained first is pre-processed, then is nested in the thin of electrostatic spinning process
In silk reception device, the reinforcement as electrostatic spinning hollow-fibre membrane；The spinning solution that step B is obtained injects electrostatic spinning work
In the device for spinning of skill, after electrostatic spinning and air curing, the solidified forming in coagulating bath, electrostatic spinning doughnut is obtained
Film.
The pretreatment of the hollow woven tube：Hollow woven tube is in the spinning solution that mass fraction is 1~5wt% at room temperature
0.5~2min is impregnated, the step A hollow woven tubes prepared are fully infiltrated so that the fiber in reinforcement is in spinning solution
In the presence of be swelled, it is therefore an objective to improve the bond strength of woven tube and surface separation layer.
Fiber filament in wherein step A and the fluoropolymer resin in step B are same material, and gained electrostatic spinning is hollow
Compatibility difference is not present in the host phase material of the inside and outside layer of tunica fibrosa, can make to combine even closer between inside and outside layer, have
Good interface fine structure, not only there is higher fracture strength, and there is higher peel strength, in effectively improving
The mechanical property of empty fiber membrane, improve the service life of hollow-fibre membrane.
Embodiment 1
A. the preparation of hollow woven tube
With the control of two-dimensional braided machine of 24 ingots, lay of braiding 2mm is set, rotating speed 800rpm, polyester filaments are woven into poly-
The hollow woven tube of ester, its external diameter are 2.0mm.
B. the preparation of spinning solution
Weigh dried polyacrylonitrile resin (model：P1361；Molecular weight：90000) 5g, it is configured to polyacrylonitrile matter
The DMA solution that fraction is 10wt% is measured, 2wt%PEG600 is added, stirs 3h at 75 DEG C, obtain homogeneous
Solution, spinning solution is obtained after vacuum defoamation.
C. the preparation of electrostatic spinning hollow-fibre membrane：It is 1wt%'s that braided polyester pipe is immersed into polyacrylonitrile mass fraction
In DMA solution, 1min is infiltrated, made spinning solution is injected in 5ml electrostatic spinning injection devices, is set
Spinning parameter is：Voltage is 22KV, spinning head and reception device distance 6cm, the μ l/min of extruded velocity 10, and electrostatic spinning filament is received
Braided polyester pipe (external diameter 2.0mm) after Embedded process on storage (diameter 1.5mm, long 20cm), setting rotating speed is 200r/min, pendulum
Removed after dynamic speed 100cm/min, electrostatic spinning 3h, immerse coagulating bath (water), solidified forming, take out, drying obtains Static Spinning
Silk polyacrylonitrile hollow fiber membrane.Film external diameter 2.5mm after tested, porosity 74%, 57 ° of water contact angle.
Embodiment 2
A. the preparation of hollow woven tube
With the control of two-dimensional braided machine of 24 ingots, lay of braiding 1mm is set, rotating speed 700rpm, polypropylene fibre long filament is woven into
Hollow polypropylene woven tube, its external diameter are 1.6mm.
B. the preparation of spinning solution
Weigh dried polyvinylidene fluoride resin (model：Su Wei 1002；Molecular weight：90000) 5g, it is configured to gather inclined fluorine
Mass fraction of ethylene is 8wt% DMA solution, adds 0.1wt% lithium chloride, 3h is stirred at 75 DEG C,
Uniform solution is obtained, spinning solution is obtained after vacuum defoamation.
C. the preparation of electrostatic spinning hollow-fibre membrane
Polypropylene woven pipe is immersed in the DMAC N,N' dimethyl acetamide solution that Kynoar mass fraction is 2wt%
1min, made spinning solution is injected in 3 5ml electrostatic spinning injection devices, setting spinning parameter is：Voltage is 20KV, spray
Silk head and reception device distance 6cm, the μ l/min of extruded velocity 12, on electrostatic spinning filament collector (diameter 1.0mm, long 20cm)
Polypropylene woven pipe (external diameter 1.6mm) after Embedded process, setting rotating speed are 200r/min, flutter rate 200cm/min, electrostatic
Removed after spinning 1h, immerse coagulating bath (water:Ethanol=3:1), solidified forming, take out, drying obtains electrostatic spinning polyvinylidene fluoride
Alkene hollow-fibre membrane.Film external diameter 2.2mm after tested, porosity 72%, 127 ° of water contact angle.
Embodiment 3
A. the preparation of hollow woven tube
With the control of two-dimensional braided machine of 24 ingots, lay of braiding 1mm is set, rotating speed 800rpm, polyester filaments are woven into poly-
The hollow woven tube of ester, its external diameter are 1.2mm.
B. the preparation of spinning solution
Weigh dried polyvinylidene fluoride resin (model：Su Wei 1002；Molecular weight：600000) 5g, solvent N, N-
Dimethylformamide and acetone (1:1) mixed solvent, the solution that Kynoar mass fraction is 12wt% is configured to, is added
0.2wt%PEG2000.3h is stirred at 70 DEG C, uniform solution is obtained, spinning solution is obtained after vacuum defoamation.
C. the preparation of electrostatic spinning hollow-fibre membrane
Braided polyester pipe is immersed into the N,N-dimethylformamide and acetone (1 that Kynoar mass fraction is 5wt%:
1) in the mixed solvent, 5min is infiltrated, made spinning solution is injected in 5 5ml electrostatic spinning injection devices, spinning parameter is set
For：Voltage is 22KV, spinning head and take-up reel distance 8cm, the μ l/min of extruded velocity 10, electrostatic spinning filament collector (diameter
1.0mm, long 20cm) on braided polyester pipe (external diameter 1.2mm) after Embedded process, setting rotating speed is 400r/min, flutter rate
Removed after 50cm/min electrostatic spinnings 0.5h, immerse coagulating bath (water:N,N-dimethylformamide=3:1), solidified forming, take
Go out, drying obtains electrostatic spinning Pvdf Microporous Hollow Fiber Membrane.Film external diameter 1.9mm after tested, porosity 68%, water contact
120 ° of angle
Embodiment 4
A. the preparation of hollow woven tube
With the control of two-dimensional braided machine of 24 ingots, lay of braiding 2mm is set, rotating speed 800rpm, polyacrylonitrile fibre long filament woven
Into the hollow woven tube of polyacrylonitrile, its external diameter is 1.6mm.
B. the preparation of spinning solution
Weigh dried polyacrylonitrile resin (model：P1361；Molecular weight：90000) 5g, it is configured to polyacrylonitrile matter
Measure the 1-METHYLPYRROLIDONE solution that fraction is 10wt%.3h is stirred at 75 DEG C, uniform solution is obtained, is obtained after vacuum defoamation
Spinning solution.
C. the preparation of electrostatic spinning hollow-fibre membrane
Polyacrylonitrile woven tube is immersed in the 1-METHYLPYRROLIDONE solution that polyacrylonitrile mass fraction is 2wt%
1min, made spinning solution is injected in 5ml electrostatic spinning injection devices, setting spinning parameter is：Voltage is 22KV, spinning head
It is nested poly- on electrostatic spinning filament collector (diameter 1.2mm, long 20cm) with take-up reel distance 8cm, the μ l/min of extruded velocity 8
Acrylonitrile woven tube (external diameter 2.0mm), setting rotating speed are 200r/min, are removed after flutter rate 100cm/min electrostatic spinnings 1h,
Coagulating bath (water) is immersed, fully after solidification, is taken out, drying obtains electrostatic spinning polyacrylonitrile hollow fiber membrane.After tested outside film
Footpath 2.1mm, porosity 71%, 62 ° of water contact angle.
The present invention does not address part and is applied to prior art.
Claims (7)
1. a kind of preparation method of electrostatic spinning hollow-fibre membrane, it is characterised in that comprise the following steps：
A. the preparation of hollow woven tube：Fiber filament is woven into by hollow woven tube using control of two-dimensional braided technology；
B. the preparation of spinning solution：The additive of 5~20wt% fluoropolymer resin and 0~10wt% is dissolved in 70~95wt%
Solvent in be configured to spinning solution, each component sum is 100wt%；
C. the preparation of electrostatic spinning hollow-fibre membrane：The hollow woven tube that step A is obtained is nested in the thin of electrostatic spinning process
In silk reception device；In the device for spinning for the spinning solution injection electrostatic spinning process that step B is obtained, through electrostatic spinning and air
After solidification, the solidified forming in coagulating bath, electrostatic spinning hollow-fibre membrane is obtained.
2. the preparation method of electrostatic spinning hollow-fibre membrane according to claim 1, it is characterised in that in step A, fiber
Long filament is at least one of polyacrylonitrile filament, PFY, polyamide filaments or polypropylene filament.
3. the preparation method of electrostatic spinning hollow-fibre membrane according to claim 2, it is characterised in that described in step B
Polymer tree is polyacrylonitrile, Kynoar, cellulose acetate, polyvinyl chloride, polyester, polyamide, polypropylene, polysulfones or poly-
At least one of ether sulfone；The solvent is water, DMAC N,N' dimethyl acetamide, N,N-dimethylformamide, N- crassitudes
At least one of ketone, acetone, tetrahydrofuran or acetic acid；The additive is polyethylene glycol, polyvinylpyrrolidone, chlorination
At least one of potassium, calcium chloride, sodium chloride, lithium chloride, lithium bromide or lithium nitrate.
4. the preparation method of electrostatic spinning hollow-fibre membrane according to claim 1, it is characterised in that described in step C
Coagulating bath is the aqueous solution of water or solvent；Spinning voltage in electrostatic spinning process is 10~30kV, and charging rate is 1~15 μ
L/min, 5~20cm of distance is received, reception device 100~800rpm of rotating speed, the flutter rate of spinning syringe needle is 50~350cm/
min。
5. the preparation method of electrostatic spinning hollow-fibre membrane according to claim 1, it is characterised in that the fiber in step A
Long filament is same material with the fluoropolymer resin in step B.
6. the preparation method of electrostatic spinning hollow-fibre membrane according to claim 1, it is characterised in that in step C, inciting somebody to action
Before the hollow woven tube that step A is obtained is nested in the filament reception device of electrostatic spinning process, in first being obtained to step A
Empty woven tube is first pre-processed.
7. the preparation method of electrostatic spinning hollow-fibre membrane according to claim 6, it is characterised in that hollow woven tube
Pretreatment：Hollow woven tube impregnates 0.5~2min in the spinning solution that mass fraction is 1~5wt% at room temperature.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108772106A (en) * | 2018-03-29 | 2018-11-09 | 天津工业大学 | The preparation method and its functional method of fiber reinforcement type hollow Nano fiber in use film |
| CN109295507A (en) * | 2018-09-29 | 2019-02-01 | 泉州市杰特化工科技有限公司 | The preparation method of the electrospun nanofiber composite material of antibacterial Waterproof Breathable |
| CN112267214A (en) * | 2020-09-18 | 2021-01-26 | 宁波方太厨具有限公司 | Preparation method of electrostatic spinning mineralized nanofiber membrane |
| CN112516806A (en) * | 2020-10-12 | 2021-03-19 | 宁波方太厨具有限公司 | Preparation method of electrostatic spinning fiber membrane |
| CN113041846A (en) * | 2021-01-28 | 2021-06-29 | 哈尔滨工业大学（深圳） | Composite membrane yarn and preparation method thereof |
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| CN108772106A (en) * | 2018-03-29 | 2018-11-09 | 天津工业大学 | The preparation method and its functional method of fiber reinforcement type hollow Nano fiber in use film |
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| CN112267214A (en) * | 2020-09-18 | 2021-01-26 | 宁波方太厨具有限公司 | Preparation method of electrostatic spinning mineralized nanofiber membrane |
| CN112267214B (en) * | 2020-09-18 | 2022-01-25 | 宁波方太厨具有限公司 | Preparation method of electrostatic spinning mineralized nanofiber membrane |
| CN112516806A (en) * | 2020-10-12 | 2021-03-19 | 宁波方太厨具有限公司 | Preparation method of electrostatic spinning fiber membrane |
| CN113041846A (en) * | 2021-01-28 | 2021-06-29 | 哈尔滨工业大学（深圳） | Composite membrane yarn and preparation method thereof |
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