CN106319649B - A kind of compound core-spun electrostatic spinning nozzle - Google Patents

A kind of compound core-spun electrostatic spinning nozzle Download PDF

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Publication number
CN106319649B
CN106319649B CN201611066611.1A CN201611066611A CN106319649B CN 106319649 B CN106319649 B CN 106319649B CN 201611066611 A CN201611066611 A CN 201611066611A CN 106319649 B CN106319649 B CN 106319649B
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pendular ring
inner tube
tube
solution
big
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CN106319649A (en
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徐文峰
廖晓玲
徐紫宸
杨晓玲
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Chongqing University of Science and Technology
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Chongqing University of Science and Technology
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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
    • D01D5/28—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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Nozzles (AREA)

Abstract

The present invention provides a kind of compound core-spun electrostatic spinning nozzle, it is made of inner and outer tubes.Big pendular ring and small equal pendular ring are machined with inner tube, on the big surface of pendular ring and the surface of small pendular ring, is all surface-treated, makes it have the micro nano structure of downward drainage, and the solution with being flowed in inner tube mutually infiltrates.On the surface of anti-phase pendular ring, in the anti-phase processing of the pendular ring surface, with outer tube of processing the solution that flows mutually infiltrate, do not infiltrate mutually with the solution flowed in inner tube, the structure not drained downwards.Present invention has the advantages that it can realize the mixing electrostatic spinning of the solution of two or more different components, functional fiber material for processing core shell structure, loose structure provides very big 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

A kind of compound core-spun electrostatic spinning nozzle
Technical field
The present invention relates to a kind of electrostatic spinning nozzle, from using being that one kind obtains compound bag based on method of electrostatic spinning The electrostatic spinning nozzle of core fibre.
Background technology
Coaxial electrostatic spinning method is that a kind of technique that device develops is improved on the basis of electrostatic spinning, can be used to make The fibrous material of standby specific function structure, its appearance compensate for common electrostatic spin processes and preparing offbeat form fiber when institute There are the defects of.But due to the nozzle of coaxial electrostatic spinning, and operating procedure and its stringent, it is not easy to control generation is double Layer or compound fiber, the distance that particularly interior syringe needle pipeline stretches out outer syringe needle pipeline is to influence the key that coaxial injection stream is formed Sexual factor：When distance is too small, interior conduit solution is easily 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 Flow 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 Project, the coaxial injection stream of stabilization can not be obtained.
Therefore, solve the above problems, it is necessary to design a kind of accurate, easy-operating coaxial electrostatic spinning nozzle, can prepare The fibrous material of core-cored structure, hollow structure and multilevel hierarchy provides the support of technology, and then widens the application neck of nanofiber Domain.
The content of the invention
The technical scheme is that：A kind of compound core-spun electrostatic spinning nozzle, is made of inner and outer tubes, its feature exists In：The termination closing of inner tube, tube head is in H4High sharp cone distal, in the tube head base H of distance closing3The place of size, is machined with one A anti-phase equal pendular ring, apart from anti-phase pendular ring H2The place of size, is machined with one small equal pendular ring, apart from small pendular ring H1 The place of size, is machined with one big equal pendular ring.The design of equal pendular ring is well uniformly to coat the solution of above-mentioned outlet In inner tube circumferential wall, avoid the occurrence of line stream and cause various solution mixing uneven.In the big h sizes above pendular ring of distance Place, is machined with vertical inner tube axial direction, 2 symmetrical upper openings of lateral direction penetrating inner tube diameter；Under the big pendular ring of distance The place of square h sizes, is machined with vertical inner tube axial direction, lateral direction penetrating inner tube diameter, direction and the mutual cross pair of upper openings Claim 2 symmetrical lower openings of arrangement.The openings design of mutual cruciform symmetry arrangement, avoids solution heap in one direction Product, is easy to solution and sprawls.The design of the lateral direction penetrating mouth of inner tube, it is all consistent to change tube opening inside and outside former Coaxial nozzle, easily Each component is caused to have little time the problem of mutually mixing or interior outer cladding are bad.Design in avoiding former coaxial electrostatic spinning spray The inside and outside nozzle needle tubing of head, in spinning process, since the parameter settings such as inside and outside syringe needle tube spacing, length are bad, and caused by Its inner tube problem uneven with the mixing of outer tube different component solution.Interior pipe surface since the upper concordant line in openings top, 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 pendular ring Surface, is all machined with the big pendular ring processing surface mutually infiltrated with the solution flowed in inner tube and small pendular ring processing surface, and With downward drainage micro nano structure；It is anti-phase pendular ring surface, be machined with it is mutually being infiltrated with the solution flowed in outer tube, The anti-phase pendular ring processing surface that solution with being flowed in inner tube does not infiltrate mutually, and only there is the micro-nano surface knot of solution coating Structure, the structure not drained downwards.This is the one of innovative point of the present invention, it is therefore intended that by the solution of inner tube outflow rapidly Interior pipe surface is paved with, is another solution solution that uniformly cladding inner tube flows out in next step of outer tube, or uniformly mixes inner tube The solution of outlet outflow is prepared.Meanwhile anti-phase at pendular ring, because outer tube solution easily coats, institute so as to preferably by The solution cladding of outer tube or mixing.
In above-mentioned technical proposal, the opening diameter of the upper openingsOnWith the opening diameter of lower openingsUnder, between Size relationship isOn= 1.5ϕUnder.Purpose of design is to ensure the solution of the upper openings of inner tube and lower openings, counting Under the reasonable caliber and flow velocity calculated, the solution of upper and lower two layers of outlet, can rapidly converge, uniformly spread over interior pipe surface.It is described Following distance h=3 to big pendular ring of upper openingsOn, lower openings it is upper it is following to big pendular ring and small pendular ring away from From h=3On.The thickness h of the anti-phase pendular ring, small pendular ring and big pendular ring1Unanimously, h1= ϕOn.Purpose of design is equally In order to ensure the solution of the upper openings of inner tube and lower openings, can uniformly spread over interior pipe surface, at the same with by auxiliary tube The solution of outflow uniformly coats；Prepare alternatively, uniformly being mixed with the solution of auxiliary tube outflow.
In above-mentioned technical proposal, the big pendular ring and small the distance between pendular ring H1 ≥2ϕOn, small pendular ring with it is anti- Mutually the distance between pendular ring H2≥5（ϕOn+ ϕUnder）, anti-phase distance H of the pendular ring to tube head base3=2（H1+ H2）, tube head Wedge angle angle [alpha]=60 ° ~ 90 °.The selection for defining experiment optimized parameter of distance and angle, it is therefore an objective to ensure that outer tube flows out Solution and inner tube outflow another solution, have enough flow mixing or cladding.When high-pressure electrostatic stretches, ensure Through being integral.
In above-mentioned technical proposal, the outer tube（12）Internal diameter radius and inner tube（1）Exterior radius only poor L0≥5ϕOn； Anti-phase equal pendular ring（2）Radius and inner tube（1）Exterior radius difference L3 =0.5 ϕOn~ 4ϕOn；Small equal pendular ring（3）Outer radius With inner tube（1）Exterior radius difference L2 = 0.5 ϕUnder~ 2ϕUnder；Big equal pendular ring（2）Outer radius and inner tube（1）Outer wall half The difference L in footpath1 =0.5ϕOn~ 2ϕOn；Said inner tube（1）Stretch out outer tube（12）Flat mouth end distance h0 = 2L0.This design, makes Obtaining the solution of outer tube and inner tube can uniformly mix, the basic phase of flow velocity of its flow velocity and the solution of inner tube under identical parameters setting Together, the parameter setting of operation, unified arrange parameter are simplified.
Above-mentioned technical conditions design, is that the present invention it is fine can 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.Both wave solution It is similar to send out speed, can easily form mixing composite fibre, such as both solution evaporation speed have difference, can easily be formed 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 core-shell structure copolymer can easily be formed 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 Beneficial 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 cladding 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, Hollow structure, the functional fiber material of loose structure provide very big facility.
（3）The present invention can be widely applied for the fields such as medicament slow release, organizational project and pharmaceutical carrier.
Brief 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. anti-phase equal pendular ring；3. small equal pendular ring；4. big equal pendular ring；Openings on 5.；6. tube body is handled Surface；7. big pendular ring processing surface；8. lower openings；9. small pendular ring processing surface；10. anti-phase pendular ring processing surface； 11. tube head；12. outer tube.
Embodiment
Further the present invention is illustrated with reference to the accompanying drawings and examples.
Specific embodiment one
A kind of compound core-spun electrostatic spinning nozzle of the present invention, is made of inner tube 1 and outer tube 12.Big pendular ring 4 and small The big pendular ring processing surface 7 on the surface of pendular ring 3 and small pendular ring processing surface 9, have the micro-nano knot of downward drainage The solution flowed in structure, with inner tube mutually infiltrates.In the anti-phase pendular ring processing surface 10 on the anti-phase surface of pendular ring 2 and outer tube 12 It is that the solution of flowing mutually infiltrates, do not infiltrated mutually with the solution flowed in inner tube, the structure not drained downwards.1 internal diameter of inner tube 2mm, the opening diameter of upper openings 5On=0.75mm, the opening diameter of lower openings 8Under= 0.5mm.Under upper openings 5 Side to big pendular ring 4 distance h=2.25mm, lower openings 8 it is upper it is following to the distance h of big pendular ring 4 and small pendular ring 3= 2.25mm.The thickness h of anti-phase pendular ring 2, small pendular ring 3 and big pendular ring 41Unanimously, h1=0.75mm。
Big pendular ring 4 and small the distance between pendular ring 3 H1 =5mm, small pendular ring 3 and anti-phase the distance between pendular ring 2 H2=7.5mm, anti-phase pendular ring 2 arrive the distance H on 11 base of tube head3=25mm, wedge angle angle [alpha]=90 ° of tube head.
The internal diameter radius of outer tube 12 and the exterior radius of inner tube 1 only poor L0 =3.75mm；Anti-phase 2 radius of pendular ring and inner tube 1 Exterior radius difference L3 =1.5mm；The difference L of the small exterior radius of 3 outer radius of 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。
Specific embodiment two
A kind of compound core-spun electrostatic spinning nozzle of the present invention, is made of inner tube 1 and outer tube 12.Big pendular ring 4 and small The big pendular ring processing surface 7 on the surface of pendular ring 3 and small pendular ring processing surface 9, have the micro-nano knot of downward drainage The solution flowed in structure, with inner tube mutually infiltrates.In the anti-phase pendular ring processing surface 10 on the anti-phase surface of pendular ring 2 and outer tube 12 It is that the solution of flowing mutually infiltrates, do not infiltrated mutually with the solution flowed in inner tube, the structure not drained downwards.1 internal diameter of inner tube 1.25mm, the opening diameter of upper openings 5On=0.6mm, the opening diameter of lower openings 8Under= 0.4mm.Upper openings 5 Following distance h=1.8mm to big pendular ring 4, lower openings 8 it is upper it is following to the distance h of big pendular ring 4 and small pendular ring 3= 1.8mm.The thickness h of anti-phase pendular ring 2, small pendular ring 3 and big pendular ring 41Unanimously, h1= 0.6mm。
Big pendular ring 4 and small the distance between pendular ring 3 H1=4.0mm, small pendular ring 3 and it is anti-phase between pendular ring 2 away from From H2 =5mm, anti-phase pendular ring 2 arrive the distance H on 11 base of tube head3=18.0mm, wedge angle angle [alpha]=60 ° of tube head 11.
The difference L of the internal diameter radius of outer tube 12 and the exterior radius of inner tube 10 =3mm；Anti-phase 2 radius of pendular ring and inner tube 1 The difference L of exterior radius3 =1.2mm；The difference L of the small exterior radius of 3 outer radius of 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。

Claims (4)

  1. A kind of 1. compound core-spun electrostatic spinning nozzle, by inner tube（1）And outer tube（12）Composition, it is characterised in that：Inner tube（1）End Head closing, tube head（11）In H4High sharp cone distal, in the tube head of distance closing（11）Base H3The place of size, is machined with one Anti-phase equal pendular ring（2）, apart from anti-phase equal pendular ring（2）H2The place of size, is machined with one small equal pendular ring（3）, apart from small Equal pendular ring（3）H1The place of size, is machined with one big equal pendular ring（4）；In the big equal pendular ring of distance（4）The place of top h sizes, It is machined with vertical inner tube（1）It is axial, lateral direction penetrating inner tube（1）The symmetrical upper openings of 2 of internal diameter（5）；In the big equal liquid of distance Ring（4）The place of lower section h sizes, is machined with vertical inner tube（1）It is axial, lateral direction penetrating inner tube（1）Internal diameter, direction and upper perforation Mouthful（5）2 symmetrical lower openings of mutual cruciform symmetry arrangement（8）；From upper openings（5）The inner tube that the concordant line in top starts （1）Surface, until tube head（11）Surface, be machined with the tube body mutually infiltrated with inner tube solution and handle surface（6）；Big equal liquid Ring（4）With small equal pendular ring（3）Surface, be all machined with and inner tube（1）In the big pendular ring processing table that mutually infiltrates of the solution that flows Face（7）With small pendular ring processing surface（9）, and the micro nano structure with downward drainage；Anti-phase equal pendular ring（2）Table Face, is machined with and outer tube（12）In the solution that flows mutually infiltrate and inner tube（1）In the solution that flows do not infiltrate mutually it is anti-phase Pendular ring handles surface（10）, and only there is the micro-nano surface structure of solution coating, the structure not drained downwards.
  2. A kind of 2. compound core-spun electrostatic spinning nozzle according to claim 1, it is characterised in that：The upper openings（5） Opening diameterOnWith lower openings（8）Opening diameterUnder, between size relationship beOn= 1.5ϕUnder；Passed through on described Port（5）It is following to big equal pendular ring（4）Distance h=3On, lower openings（8）It is upper following to big equal pendular ring（4）With it is small Pendular ring（3）Distance h=3On；The anti-phase equal pendular ring（2）, small equal pendular ring（3）With big equal pendular ring（4）Thickness h1Unanimously, h1 = ϕOn。
  3. A kind of 3. compound core-spun electrostatic spinning nozzle according to claim 1, it is characterised in that：The small equal pendular ring（3） With anti-phase equal pendular ring（2）The distance between H2 ≥5（ϕOn+ ϕUnder）, anti-phase equal pendular ring（2）To tube head（11）The distance H on base3 =2（H1+ H2）, tube head（11）Wedge angle angle [alpha]=60 ° ~ 90 °.
  4. A kind of 4. compound core-spun electrostatic spinning nozzle according to claim 1, it is characterised in that：The outer tube（12）It is interior Footpath radius and inner tube（1）Exterior radius difference L0 ≥5ϕOn；Anti-phase equal pendular ring（2）Radius and inner tube（1）Exterior radius it Poor 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。
CN201611066611.1A 2016-11-28 2016-11-28 A kind of compound core-spun electrostatic spinning nozzle Active CN106319649B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203238353U (en) * 2013-05-25 2013-10-16 大连交通大学 Coaxial electro-spinning sprayer with replaceable inner needle head and replaceable outer needle head
JP2016053230A (en) * 2014-09-04 2016-04-14 富士フイルム株式会社 Electro-spinning nozzle, and method and apparatus for producing nanofiber
CN205474130U (en) * 2016-01-30 2016-08-17 哈尔滨师范大学 Laboratory electrostatic spinning shower nozzle
CN206266755U (en) * 2016-11-28 2017-06-20 重庆科技学院 Compound core-spun electrostatic spinning nozzle

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120189795A1 (en) * 2011-01-26 2012-07-26 Shing-Chung Wong Electrospun microtubes and nanotubes containing rheological fluid

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203238353U (en) * 2013-05-25 2013-10-16 大连交通大学 Coaxial electro-spinning sprayer with replaceable inner needle head and replaceable outer needle head
JP2016053230A (en) * 2014-09-04 2016-04-14 富士フイルム株式会社 Electro-spinning nozzle, and method and apparatus for producing nanofiber
CN205474130U (en) * 2016-01-30 2016-08-17 哈尔滨师范大学 Laboratory electrostatic spinning shower nozzle
CN206266755U (en) * 2016-11-28 2017-06-20 重庆科技学院 Compound core-spun electrostatic spinning nozzle

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