CN106435778B - A kind of application method of compound core-spun electrostatic spinning nozzle - Google Patents
A kind of application method of compound core-spun electrostatic spinning nozzle Download PDFInfo
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- CN106435778B CN106435778B CN201611066610.7A CN201611066610A CN106435778B CN 106435778 B CN106435778 B CN 106435778B CN 201611066610 A CN201611066610 A CN 201611066610A CN 106435778 B CN106435778 B CN 106435778B
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- inner tube
- pendular ring
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
- D01D5/0069—Electro-spinning characterised by the electro-spinning apparatus characterised by the spinning section, e.g. capillary tube, protrusion or pin
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/24—Formation of filaments, threads, or the like with a hollow structure; Spinnerette packs therefor
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/24—Formation of filaments, threads, or the like with a hollow structure; Spinnerette packs therefor
- D01D5/247—Discontinuous hollow structure or microporous structure
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
- D01D5/34—Core-skin structure; Spinnerette packs therefor
Abstract
The present invention provides a kind of application method of compound core-spun electrostatic spinning nozzle, the nozzle used is made of inner and outer tubes.Operating procedure includes the first step, according to the property of solution used in experiment, cleans inner and outer tubes surfaces externally and internally.Second step, installs the feed flow of inner and outer tubes, first opens the liquid-supplying system of inner tube, then over pipe liquid-supplying system.Or it is on the contrary.Third walks, and sets the parameter of energization spinning.4th step after spinning, cleans inner and outer tubes, and drying is for use.Present invention has the advantages that the mixing electrostatic spinning of the solution of two or more different components can be realized, functional fiber material for processing nucleocapsid, porous structure provides prodigious facility, it can be widely applied for the fields such as medicament slow release, organizational project and pharmaceutical carrier, it can be operated according to single needle pipe nozzle, operating procedure is simple.
Description
Technical field
The present invention relates to a kind of application methods of electrostatic spinning nozzle, are that one kind being based on method of electrostatic spinning from using
Obtain the application method of the electrostatic spinning nozzle of compound core-spun fiber.
Background technology
Coaxial electrostatic spinning method is a kind of technique improved device on the basis of electrostatic spinning and developed, and can be used to make
The fibrous material of standby specific function structure, its appearance compensate for common electrostatic spin processes and are preparing offbeat form fiber when institute
Existing defect.But nozzle and operating procedure due to coaxial electrostatic spinning and its stringent, it is not easy to which control generates double
Layer or compound fiber, the distance that especially interior syringe needle pipeline stretches out outer syringe needle pipeline are the key that influence coaxial injection stream formation
Sexual factor：When distance is too small, interior conduit solution is easy to be blocked by the solution of outer layer pipe, and interior syringe needle solution can not smoothly flow
Go out, internal layer solution cannot stretch under electric field force effect at this time, and only outer layer solution forms jet stream.When distance is too big, solution
It flows out, interior syringe needle extension can not be coated completely, and then cause many solution from syringe needle surrounding along the outer surface of inner tubal wall
It projects, is unable to get stable coaxial injection stream.
Therefore, it solves the above problems, needs a kind of accurate, easy-operating coaxial electrostatic spinning nozzle of design and its user
Method, can prepare the support of the fibrous material offer technology of core-cored structure, hollow structure and multilevel hierarchy, and then widen nanometer
The application field of fiber.
Invention content
The technical scheme is that：A kind of application method of compound core-spun electrostatic spinning nozzle, the nozzle used is by interior
Pipe and outer tube composition.The end of inner tube is closed, and tube head is in H4High sharp cone distal, apart from closed tube head bottom edge H3The ground of size
Side, there are one the equal pendular rings of reverse phase for processing, apart from the equal pendular ring H of reverse phase2The place of size, processing there are one small equal pendular ring, away from
From small equal pendular ring H1The place of size, there are one big equal pendular rings for processing.The design of equal pendular ring is the solution of above-mentioned outlet very
It is coated uniformly on well in inner tube circumferential wall, avoids the occurrence of line stream and cause various solution mixing uneven.In the big equal liquid of distance
The place of h sizes above ring is machined with vertical inner tube axial direction, 2 symmetrical upper openings of lateral direction penetrating inner tube diameter；Away from
Place from h sizes below big pendular ring, is machined with vertical inner tube axial direction, lateral direction penetrating inner tube diameter, direction and upper perforation
2 symmetrical lower openings of mouth cruciform symmetry arrangement.The openings design of mutual cruciform symmetry arrangement, avoids solution at one
It is accumulated on direction, is easy to solution and sprawls.The design of the lateral direction penetrating mouth of inner tube changes tube opening all one inside and outside former Coaxial nozzle
It causes, is easy to cause each component and has little time mutual mixing or the bad problem of interior outer cladding.Design is in avoiding former coaxial quiet
The inside and outside nozzle needle tubing of Electrospun nozzle, in spinning process, since the parameter settings such as inside and outside syringe needle tube spacing, length are bad,
The problem uneven with the mixing of outer tube different component solution of its inner tube caused by and.In since the upper concordant line in openings top
Pipe surface, until the surface of tube head, is machined with the tube body mutually infiltrated with inner tube solution and handles surface；Big pendular ring and small
The surface of pendular ring is all machined with the big equal pendular ring processing surface mutually infiltrated with the solution flowed in inner tube and small equal pendular ring processing table
Face, and there is downward drainage micro nano structure；The surface of the equal pendular ring of reverse phase is machined with and is mutually soaked with the solution flowed in outer tube
Reverse phase equal pendular ring processing moistening, not infiltrated mutually with the solution flowed in inner tube surface, and only with the micro-nano of solution coating
Surface texture, the structure not drained downwards.This is the one of innovative point of the present invention, it is therefore intended that the solution for flowing out inner tube
It is rapidly paved with interior pipe surface, is another solution solution that uniformly cladding inner tube flows out in next step of outer tube, or uniformly mixed
The solution for closing inner tube outlet outflow is prepared.Meanwhile at the equal pendular ring of reverse phase, because outer tube solution is easy coating, so can be more
It is coated or is mixed by the solution of outer tube well.
It is characterized in that, application method is as follows.
The first step cleans inner and outer tubes outer surface according to the property of solution used in experiment with solvent or deionized water；Again
The liquid-supplying system for opening each pipeline cleans the internal channel 0.5h of inner tube outer tube with solvent or deionized water, dries inner and outer tubes
For use.
Second step, installs the feed flow of inner and outer tubes, first opens the liquid-supplying system of inner tube, waits for that the tube head of inner tube has solution
Drippage, and remain a constant speed drippage 5min-8min, then over pipe liquid-supplying system, wait for outer tube solution cladding inner tube solution, and
There are solution drips in tube head, remain a constant speed drippage 5min-8min；Alternatively, first opening the liquid-supplying system of outer tube, the solution of outer tube is waited for
There are solution drips in tube head, and the drippage 5min-8min that remains a constant speed, then open the liquid-supplying system of inner tube, waits for that the solution of inner tube is wrapped
It overlays in the solution of outer tube, and has solution drips in tube head, remain a constant speed drippage 5min-8min.
Third walks, and it is 20cm ~ 30cm that setting, which receives distance, with voltage 12kv ~ 20kv, 5 mL/h of outer tube flow velocity ~ 15mL/
H, the inner tube flow velocity mL/h of 0.5mL/h ~ 2, is initially powered up spinning.
4th step after spinning, repeats step 1, cleans inner and outer tubes, and drying is for use.
In above-mentioned technical proposal, the opening diameter of the upper openings of used nozzleOnIt is straight with the opening of lower openings
DiameterUnder, between size relationship beOn= 1.5ϕUnder.Purpose of design is to ensure the upper openings of inner tube and lower openings
Solution, under the reasonable caliber and flow velocity of calculating, the solution of upper layer and lower layer outlet can converge rapidly, uniformly spread over inner tube
Surface.Following distance h=3 to big pendular ring of the upper openingsOn, lower openings it is upper following to big pendular ring and small
Distance h=3 of equal pendular ringOn.The thickness h of the equal pendular ring of the reverse phase, small equal pendular ring and big pendular ring1Unanimously, h1= ϕOn.Design
Purpose can uniformly spread over interior pipe surface, simultaneously also for the solution for the upper openings and lower openings for ensureing inner tube
It is uniformly coated with the solution flowed out by auxiliary tube；It prepares alternatively, uniformly being mixed with the solution of auxiliary tube outflow.
In above-mentioned technical proposal, the distance between big equal pendular ring and small equal pendular ring of used nozzle H1 ≥5 ϕOn,
The distance between small equal pendular ring and the equal pendular ring of reverse phase H2 ≥5（ϕOn+ ϕUnder）, the distance H of the equal pendular ring of reverse phase to tube head bottom edge3 =2
（H1+ H2）, wedge angle angle [alpha]=60 ° ~ 90 ° of tube head.The selection for defining experiment optimized parameter of distance and angle, it is therefore an objective to
Another solution for ensureing the solution and inner tube outflow of outer tube outflow has enough flow mixing or cladding.In high-pressure electrostatic
When stretching, guarantee has been integrated.
In above-mentioned technical proposal, the outer tube of used nozzle（12）Internal diameter radius and inner tube（1）Exterior radius only
Poor L0 ≥5ϕOn；The equal pendular ring of reverse phase（2）Radius and inner tube（1）Exterior radius difference L3 =0.5 ϕOn~ 4ϕOn；Small equal pendular ring
（3）Outer radius and inner tube（1）Exterior radius difference L2 = 0.5 ϕUnder~ 2ϕUnder；Big equal pendular ring（2）Outer radius and inner tube
（1）Exterior radius difference L1 =0.5 ϕOn~ 2ϕOn；Said inner tube（1）Stretch out outer tube（12）Flat mouth end distance h0 =
2L0.This design so that outer tube and the solution of inner tube can be mixed uniformly, its flow velocity and inner tube is molten under identical parameters setting
The flow velocity of liquid is essentially identical, simplifies the parameter setting of operation, unified arrange parameter.
Above-mentioned technical conditions design, which is the present invention, it is fine to prepare different composite electrostatic spinnings according to different experiments
Dimension.If the solution of outer tube with the solution of inner tube be as it is hydrophilic or hydrophobic, the present invention can be used.The two solution is waved
It is similar to send out rate, can be easy to form mixing composite fibre, such as the two solution evaporation rate has difference, can be easy to form core-
The composite fibre of shell shape structure.If the solution of outer tube is hydrophilic, the solution of another inner tube is hydrophobic, and the present invention also can
With.Alternatively, the solution of inner tube is hydrophilic, the solution of outer tube is hydrophobic, and the present invention can also use.Also it can be easy to form core-shell structure copolymer
The composite fibre of layer structure.
Compared with existing conventional coaxial electrostatic spinning, the present invention has following the coaxial electrostatic spinning nozzle that the present invention designs
Advantageous effect.
（1）It is integrated because several material solutions have mixed before high-voltage electrostatic spinning, in the setting of operating parameter
Cheng Zhong can be operated according to single needle pipe nozzle, only need to form compound taylor cone at the closing tip of nozzle of the present invention, after
And from Taylor cone it is stretched by shell coat stratum nucleare same axle housing-core composite construction fiber.Operating procedure is simple.
（2）Meanwhile, it is capable to realize the mixing electrostatic spinning of the solution of two or more different components, for processing nucleocapsid structure,
The prodigious facility of functional fiber material offer of hollow structure, porous structure.
（3）The present invention can be widely applied for the fields such as medicament slow release, organizational project and pharmaceutical carrier.
Description of the drawings
Fig. 1 is the inner tube structure schematic front view of the present invention.
Fig. 2 is the inner tube structure size marking schematic diagram of the present invention.
Fig. 3 is the assembling structure schematic front view of the present invention.
Fig. 4 is the assembling structure elevational schematic view of the present invention.
Wherein：1. inner tube；2. the equal pendular ring of reverse phase；3. small equal pendular ring；4. big equal pendular ring；Openings on 5.；6. tube body is handled
Surface；7. big pendular ring handles surface；8. lower openings；9. small equal pendular ring handles surface；10. the equal pendular ring of reverse phase handles surface；
11. tube head；12. outer tube.
Specific implementation mode
Further the present invention is illustrated with reference to the accompanying drawings and examples.
Specific embodiment one
A kind of application methods of compound core-spun electrostatic spinning nozzle of of the present invention, the nozzle used is by inner tube 1 and outer tube
12 compositions.The big equal pendular ring processing surface 7 on the big surface of pendular ring 4 and small equal pendular ring 3 and small equal pendular ring handle surface 9, have
The micro nano structure of downward drainage, mutually infiltrates with the solution flowed in inner tube.The equal liquid of reverse phase on the surface of the equal pendular ring of reverse phase 2
Ring handle it is that the solution of surface 10 and 12 inner flowing of outer tube mutually infiltrates, do not infiltrated mutually with the solution flowed in inner tube, do not have downwards
The structure of drainage.1 internal diameter 2mm of inner tube, the opening diameter of upper openings 5On=0.75mm, the opening diameter of lower openings 8Under=
0.5mm.Upper openings 5 arrive greatly distance h=2.25mm of pendular ring 4 below, and 4 He of equal pendular ring greatly is arrived in the upper of lower openings 8 below
Distance h=2.25mm of small equal pendular ring 3.The thickness h of the equal pendular ring 2 of reverse phase, small equal pendular ring 3 and big pendular ring 41Unanimously, h1=
0.75mm。
Big the distance between pendular ring 4 and small equal pendular ring 3 H1 =8mm, the distance between equal pendular ring of small equal pendular ring 3 and reverse phase 2
H2=7.5mm, the equal pendular ring 2 of reverse phase arrive the distance H on 11 bottom edge of tube head3=15.5mm, the high H of tube head 114 ≥H1, the wedge angle angle of tube head
Spend α=90 °.
The internal diameter radius of outer tube 12 and the exterior radius of inner tube 1 only poor L0 =3.75mm；Equal 2 radius of pendular ring of reverse phase and inner tube 1
Exterior radius difference L3 =1.5mm；The difference L of the exterior radius of 3 outer radius of small equal pendular ring and inner tube 12 = 1mm；Big equal liquid
The difference L of the exterior radius of 2 outer radius of ring and inner tube 11 =1.5mm；Inner tube 1 stretches out the distance h at the flat mouth end of outer tube 120 =
7.5mm。
1 surface of inner tube since the concordant line in 5 top of upper openings, until the surface of tube head 11, is machined with hydrophilic, thin
The tube body of oil handles surface 6.The surface of big pendular ring 4 and small equal pendular ring 3 is all machined with hydrophilic, oleophobic big equal pendular ring processing
Surface 7 and small equal pendular ring handle surface 9, and the micro nano structure with downward drainage.The surface of the equal pendular ring of reverse phase 2, adds
Work has hydrophobic, oleophylic reverse phase equal pendular ring processing surface 10, and the micro-nano surface structure only with solution coating, without downward
The structure of drainage.Operating procedure is as follows.
The first step cleans 1 surface of inner tube with deionized water, and 12 outer surface of outer tube is cleaned 6 times with chloroform.It opens again each
The liquid-supplying system of pipeline cleans the internal channel 0.5h of inner tube 1 with deionized water, the internal channel of outer tube 12 is cleaned with chloroform
0.5h, dries inner tube 1 and outer tube 12 is for use.
The Poly(D,L-lactide-co-glycolide PLGA of molecular weight 100,000 is dissolved in chloroform, is configured to 15% by second step
（w/v）Solution is fitted into the liquid-supplying system of outer tube 12.60,000 polyethyleneimine PEI of molecular weight is configured to 30%（w/v）It is water-soluble
Liquid is fitted into the liquid-supplying system of inner tube 1.The liquid-supplying system for first opening inner tube 1 waits for that the tube head 11 of inner tube 1 has solution drips, and protects
It holds and at the uniform velocity drips 5min, then open the liquid-supplying system of outer tube 12, wait for the solution of the solution cladding inner tube 1 of outer tube 12, and in tube head
11 have solution drips, and remain a constant speed drippage 8min.
Third walks, and it is 20cm that setting, which receives distance, with voltage 12kv, 12 flow velocity 10mL/h of outer tube, 1 flow velocity 0.6mL/ of inner tube
H is initially powered up spinning.Obtain the compound core-spun electrospun fibers of nucleocapsid.
4th step after spinning, repeats step 1, cleans inner tube 1 and outer tube 12, and drying is for use.
Specific embodiment two
A kind of application method of compound core-spun electrostatic spinning nozzle of the present invention, the nozzle used is by inner tube 1 and outer tube 12
Composition.The big equal pendular ring processing surface 7 on the big surface of pendular ring 4 and small equal pendular ring 3 and small equal pendular ring handle surface 9, have to
The micro nano structure of lower drainage is mutually infiltrated with the solution flowed in inner tube.The equal pendular ring of reverse phase on the surface of the equal pendular ring of reverse phase 2
It is that the solution of processing surface 10 and 12 inner flowing of outer tube mutually infiltrates, do not infiltrate mutually with the solution flowed in inner tube, do not draw downwards
The structure of stream.1 internal diameter 1.25mm of inner tube, the opening diameter of upper openings 5On=0.6mm, the opening diameter of lower openings 8Under=
0.4mm.Upper openings 5 arrive greatly distance h=1.8mm of pendular ring 4 below, and 4 He of equal pendular ring greatly is arrived in the upper of lower openings 8 below
Distance h=1.8mm of small equal pendular ring 3.The thickness h of the equal pendular ring 2 of reverse phase, small equal pendular ring 3 and big pendular ring 41Unanimously, h1= 0.6mm。
Big the distance between pendular ring 4 and small equal pendular ring 3 H1=4.2mm, between small equal pendular ring 3 and the equal pendular ring of reverse phase 2 away from
From H2=5mm, the equal pendular ring 2 of reverse phase arrive the distance H on 11 bottom edge of tube head3=18.4mm, the high H of tube head 114 ≥H1, the point of tube head 11
Angle angle [alpha]=60 °.
The difference L of the internal diameter radius of outer tube 12 and the exterior radius of inner tube 10 =3mm；Equal 2 radius of pendular ring of reverse phase and inner tube 1
The difference L of exterior radius3 =1.2mm；The difference L of the exterior radius of 3 outer radius of small equal pendular ring and inner tube 12 = 0.6mm；Big equal liquid
The difference L of the exterior radius of 2 outer radius of ring and inner tube 11 =1.2mm；Inner tube 1 stretches out the distance h at the flat mouth end of outer tube 120 =
6mm。
1 surface of inner tube since the concordant line in 5 top of upper openings, until the surface of tube head 11, is machined with hydrophobic parent
The tube body of oil handles surface 6.The surface of big pendular ring 4 and small equal pendular ring 3, is all machined with the big equal pendular ring processing table of hydrophobic oleophilic oil
Face 7 and small equal pendular ring handle surface 9, and the micro nano structure with downward drainage.The surface of the equal pendular ring of reverse phase 2, processing
There are hydrophilic and oleophobic reverse phase equal pendular ring processing surface 10, and the micro-nano surface structure only with solution coating, does not draw downwards
The structure of stream.Operating procedure is as follows.
The first step, 12 surface of outer tube is cleaned with deionized water, and 1 outer surface of inner tube is cleaned with chloroform；Each pipe is opened again
The liquid-supplying system on road cleans the internal channel 0.5h of outer tube 12 with deionized water, the internal channel of inner tube 1 is cleaned with chloroform
0.5h, dries inner tube 1 and auxiliary tube 5 is for use.
The Poly(D,L-lactide-co-glycolide PLGA of molecular weight 100,000 is dissolved in chloroform, is configured to 15% by second step
（w/v）Solution is fitted into the liquid-supplying system of inner tube 1.60,000 polyethyleneimine PEI of molecular weight is configured to 30%（w/v）Aqueous solution,
It is fitted into the liquid-supplying system of outer tube 12.The liquid-supplying system for first opening outer tube 12 waits for that the solution of outer tube 12 has solution drop in tube head 11
It falls, remain a constant speed drippage 5min.The liquid-supplying system for opening inner tube 1 again waits for that the solution of inner tube 1 is wrapped by, and tube head 11 has solution
Drippage, and the drippage 8min that remains a constant speed.
Third walks, and it is 30cm that setting, which receives distance, with voltage 20kv, 12 flow velocity 12mL/h of outer tube, 2 flow velocity 1mL/h of inner tube,
It is initially powered up spinning.Obtain the compound core-spun electrospun fibers of intermediate porous.
4th step after spinning, repeats step 1, cleans inner tube 1 and outer tube 12, and drying is for use.
Claims (4)
1. a kind of application method of compound core-spun electrostatic spinning nozzle, the nozzle used is by inner tube（1）And outer tube（12）Composition, it is interior
Pipe（1）End closing, tube head（11）In H4High sharp cone distal, apart from closed tube head（11）Bottom edge H3The place of size, adds
There are one the equal pendular rings of reverse phase for work（2）, apart from the equal pendular ring of reverse phase（2）H2The place of size, there are one small equal pendular rings for processing（3）,
Apart from small equal pendular ring（3）H1The place of size, there are one big equal pendular rings for processing（4）；In the big equal pendular ring of distance（4）Top h rulers
Very little place is machined with 2 symmetrically upper openings（5）, 2 symmetrical upper openings（5）Lateral direction penetrating inner tube is collectively formed
（1）Internal diameter, and vertical inner tube（1）Axial through-hole；In the big equal pendular ring of distance（4）The place of lower section h sizes, be machined with 2 it is right
The lower openings claimed（8）, 2 symmetrical lower openings（8）Lateral direction penetrating inner tube is collectively formed（1）Internal diameter, and vertical inner tube（1）
An axial through-hole；2 symmetrical upper openings（5）Direction and 2 symmetrical lower openings（8）Direction, be in cross
Symmetry arrangement；From upper openings（5）The inner tube that the concordant line in top starts（1）Surface, until tube head（11）Surface, process
Have and inner tube（1）The tube body that solution mutually infiltrates handles surface（6）；Big equal pendular ring（4）With small equal pendular ring（3）Surface, all process
Have and inner tube（1）In the big equal pendular ring processing surface that mutually infiltrates of the solution that flows（7）Surface is handled with small equal pendular ring（9）, and have
There is the micro nano structure of downward drainage；The equal pendular ring of reverse phase（2）Surface, be machined with and outer tube（12）In the solution phase that flows
Infiltrate and inner tube（1）In the reverse phase equal pendular ring processing surface that does not infiltrate mutually of the solution that flows（10）, and only there is solution coating
Micro-nano surface structure, the structure not drained downwards；It is characterized in that, application method is as follows：
The first step cleans inner tube according to the property of solution used in experiment with solvent or deionized water（1）And outer tube（12）Appearance
Face；The liquid-supplying system for opening each pipeline again cleans inner tube with solvent or deionized water（1）Outer tube（12）Internal channel 0.5h, dry
Dry inner tube（1）And outer tube（12）For use；
Second step installs inner tube（1）And outer tube（12）Feed flow, first open inner tube（1）Liquid-supplying system, wait for inner tube（1）'s
Tube head（11）Have solution drips, and remain a constant speed drippage 5min-8min, then over manage（12）Liquid-supplying system, wait for outer tube（12）
Solution coat inner tube（1）Solution, and in tube head（11）There are solution drips, remain a constant speed drippage 5min-8min；Alternatively, first
Open outer tube（12）Liquid-supplying system, wait for outer tube（12）Solution in tube head（11）There are solution drips, and the drippage that remains a constant speed
5min-8min, then open inner tube（1）Liquid-supplying system, wait for inner tube（1）Solution be covered by outer tube（12）Solution in, and
Tube head（11）There are solution drips, remain a constant speed drippage 5min-8min；
Third walks, and it is 20cm ~ 30cm that setting, which receives distance, with voltage 12kv ~ 20kv, outer tube（12）5 mL/h of flow velocity ~ 15mL/
H, inner tube（1）The mL/h of flow velocity 0.5mL/h ~ 2, are initially powered up spinning；
4th step after spinning, repeats step 1, cleans inner tube（1）And outer tube（12）, drying is for use.
2. a kind of application method of compound core-spun electrostatic spinning nozzle according to claim 1, it is characterised in that：It is used
Nozzle upper openings（5）Opening diameterOnWith lower openings（8）Opening diameterUnder, between size relationship beOn=
1.5ϕUnder；The upper openings（5）It is following to big equal pendular ring（4）Distance h=3On, lower openings（8）Upper arrive below
Big equal pendular ring（4）With small equal pendular ring（3）Distance h=3On；The equal pendular ring of reverse phase（2）, small equal pendular ring（3）With big equal pendular ring
（4）Thickness h1Unanimously, h1= ϕOn。
3. a kind of application method of compound core-spun electrostatic spinning nozzle according to claim 1, it is characterised in that：It is used
Nozzle big equal pendular ring（4）With small equal pendular ring（3）The distance between H1 ≥5 ϕOn, small equal pendular ring（3）With the equal pendular ring of reverse phase
（2）The distance between H2 ≥5（ϕOn+ ϕUnder）, the equal pendular ring of reverse phase（2）To tube head（11）The distance H on bottom edge3=2（H1+ H2）, pipe
Head（11）Wedge angle angle [alpha]=60 ° ~ 90 °.
4. a kind of application method of compound core-spun electrostatic spinning nozzle according to claim 1, it is characterised in that：It is used
Nozzle outer tube（12）Internal diameter radius and inner tube（1）Exterior radius difference L0 ≥5ϕOn；The equal pendular ring of reverse phase（2）Radius with
Inner tube（1）Exterior radius difference L3 =0.5 ϕOn~ 4ϕOn；Small equal pendular ring（3）Outer radius and inner tube（1）Exterior radius
Difference L2 = 0.5 ϕUnder~ 2ϕUnder；Big equal pendular ring（2）Outer radius and inner tube（1）Exterior radius difference L1 =0.5 ϕOn~
2ϕOn；Said inner tube（1）Stretch out outer tube（12）Flat mouth end distance h0 = 2L0。
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| CN201611066610.7A CN106435778B (en) | 2016-11-28 | 2016-11-28 | A kind of application method of compound core-spun electrostatic spinning nozzle |
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| CN201611066610.7A CN106435778B (en) | 2016-11-28 | 2016-11-28 | A kind of application method of compound core-spun electrostatic spinning nozzle |
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| US7309498B2 (en) * | 2001-10-10 | 2007-12-18 | Belenkaya Bronislava G | Biodegradable absorbents and methods of preparation |
| WO2010090868A2 (en) * | 2009-01-21 | 2010-08-12 | The Florida International University Board Of Trustees | Needle-in-needle electrospinning spinneret |
| CN202809021U (en) * | 2012-05-30 | 2013-03-20 | 湖南博弈飞装备新材料研究所 | Electrostatic spinning device |
| CN204491055U (en) * | 2015-03-06 | 2015-07-22 | 北京化工大学 | A kind of spout cyclone type is prepared nanometer and to be twisted thread electrostatic spinning nozzle device |
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2016
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