CN101570898B - Electrostatic spinning spray head with high efficiency - Google Patents
Electrostatic spinning spray head with high efficiency Download PDFInfo
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- CN101570898B CN101570898B CN2008101054018A CN200810105401A CN101570898B CN 101570898 B CN101570898 B CN 101570898B CN 2008101054018 A CN2008101054018 A CN 2008101054018A CN 200810105401 A CN200810105401 A CN 200810105401A CN 101570898 B CN101570898 B CN 101570898B
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- conical surface
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Abstract
The invention discloses an electrostatic spinning spray head with high efficiency, belonging to the field of electrostatic spinning. The electrostatic spinning spray head comprises a spray hole and a cone; a matching part of the cone and the spray hole is equally divided into several planes; spanning solution or fused mass uniformly flows towards a spanning conical surface from a clearance betweeneach plane and the spray hole; and when the solution or the fused mass is uniformly distributed on the circumference of the large end of the spanning conical surface, a plurality of spray flows are f ormed on the circumference of the large end of the spanning conical surface after an electrostatic field is added. The invention not only decreases the difficulty in processing an electrostatic spinning capillary, but also greatly improves the efficiency of electrostatic spinning.
Description
Technical field
The present invention relates to a kind of electrostatic spinning nozzle, belong to the electrostatic spinning field.
Background technology
Along with the intensification of nanometer technology, electrospinning process can be prepared nano level fiber and becomes one of current research focus owing to it.Electrospinning process has been acknowledged as the simplest effective method of preparation nanofiber, and existing at present 30 multiple polymers successfully make superfine fibre by the method, and minimum diameter reaches tens nanometers.About the result of study of electrostatic spinning, pertinent literature all is index over the years increases.Electrostatic spinning occurs that from it the history in 100 years is arranged so far nearly, yet this technology does not also realize industrialization till now.
Electrostatic spinning comprises solution electrostatic spinning and melt electrostatic spinning again.The proportion of solvent surpasses 90% in the spinning solution of solution electrostatic spinning, and the spinning process solvent evaporates, thereby its efficient is extremely low, is generally 0.01g/min; Though and melt electrostatic spinning does not have the evaporation of solvent, efficient is high more a lot of than solution electrostatic spinning, because the spinning process injection stream is difficult to division, generally only forms single injection stream, thereby efficient also remains further to be improved.Typical electrostatic spinning efficient is (1mg-1g)/h.So low efficient is that electrostatic spinning also is in breadboard conceptual phase up to now, is difficult to push to industrialized fatal shortcoming.
Capillary is one of necessary element of electrostatic spinning.Internal diameter capillaceous is generally 0.05～0.2mm, and it is very difficult processing this superfine little micropore.Also have solution electrostatic spinning process, capillary phenomenon of blocking occurs through regular meeting, has had a strong impact on carrying out continuously of electrostatic spinning.Clean the capillary that stops up in addition certain degree of difficulty is also arranged.
Summary of the invention
A kind of high efficiency electrostatic spinning nozzle that the present invention proposes, it does not need to use capillary, thereby avoided the capillary blocking problem and processed difficulty capillaceous, also has the injection stream that can form multiply by this shower nozzle, improve the efficient of electrostatic spinning greatly, solved the inefficient fatal problem of electrostatic spinning.
The invention provides a kind of high efficiency electrostatic spinning nozzle, it comprises spray orifice (1) and cone (2) two parts, cone (2) comprises the cooperation cone (4) that cooperates with the endoporus of spray orifice (1) again and is used to spray spray wire cone (7) two parts of silk, the cooperation cone (4) of cone (2) cuts out several planes (5) with the mating part five equilibrium of spray orifice (1) endoporus, cut-out is not for cooperating the cooperation conical surface (8) on the cone (4), cooperate the conical surface (8) to cooperate with spray orifice (1) endoporus, spinning solution or melt flow to the conical surface of spray wire cone (7) equably from the gap of each plane (5) and spray orifice (1) endoporus, when the spray screw tap big end circumference of face (9) is evenly distributed with solution or melt, after adding electrostatic field, will form the injection stream (3) of multiply at the spray screw tap big end circumference of face (9).
The electrostatic spinning nozzle that the present invention proposes has tangible difference with general electrostatic spinning nozzle, and it does not need to use capillary, thereby does not need to process minute aperture, has reduced difficulty of processing, and the spray orifice part of shower nozzle does not need capillary processing, and injection diameter can be greater than 2mm.Spinning solution or melt are to flow out from the fit clearance of spray orifice (1) and cone (2), rather than flow out from micropore.The fit clearance of spray orifice (1) and cone (2) can not be too big, otherwise spinning solution or melt can flow too soon, can not form injection stream, suitable gap should be that spinning solution or melt are just rested on the spray screw tap big end circumference of face (9), and do not drip the optional 0.05～0.1mm of reference gap.
After cooperating cone (4) to cut out uniform plane (5), because spray wire cone (7) is a solid, spinning solution or melt can only flow out from the gap of each plane (5) and spray orifice (2), spinning solution or melt because being evenly distributed on, each plane (5) cooperate on the cone (4), so can flow to the big end of spray wire cone (7) conical surface equably.
After cooperating cone (4) to cut out each plane (5), the corresponding position of spray wire cone (7) small end rounding obtains chamfering (6), with the spinning solution that is more conducive to come out from the gap or the melt-flow conical surface to spray wire cone (7).
The reference value of the big end circumference of spray screw tap face (9) diameter of spray wire cone (7) is 5～10mm, and circumference is oversize can to hinder flowing of solution or melt, the too small meeting influence of circumference spray silk efficient, and the selection of circle diameter should be mated with the gradient of spray wire cone (7) conical surface.
The conical surface of spray wire cone (7) can be smooth surface or has uniform drainage trough version.
The present invention had both avoided processing electrostatic spinning difficulty capillaceous, had improved the efficient of electrostatic spinning again greatly.
Description of drawings
Fig. 1 is the assembling schematic diagram of shower nozzle.
Fig. 2 is the axonometric drawing of cone.
Fig. 3 adopts the fiber electromicroscopic photograph of this shower nozzle by the method preparation of melt electrostatic spinning.
Among the figure: the 1-spray orifice; The 2-cone; The injection stream of 3-multiply; 4-cooperates cone; The 5-plane;
The 6-chamfering; 7-sprays wire cone; 8-cooperates the conical surface; The big end circumference of 9-spray screw tap face.
The specific embodiment
The present invention is further elaborated below in conjunction with specific embodiment.
Among Fig. 1 and Fig. 2, the internal diameter of spray orifice (1) is 2mm, cooperation cone (4) five equilibrium of cone (2) cuts out 4 planes (5), spray orifice (1) is 0.1mm with the maximal clearance that cooperates the conical surface (8), the gradient of the conical surface of spray wire cone (7) is 58 °, spray wire cone (7) small end rounding obtains 45 ° chamfering (6), and the spray screw tap big end circumference of face (9) diameter is 6mm.Spray orifice (1) closely cooperates with cooperating the conical surface (8), and shower nozzle is installed on the melt spinning device, and spinning material is the PP particle.When the spray screw tap big end circumference of face (9) is evenly distributed with the PP melt that melts via the melt spinning device, add electrostatic field, the injection stream of multiply (3) evenly sprays along the big end circumference of spray screw tap face, Fig. 3 is the PP fiber by this shower nozzle preparation, fibre diameter is at 700nm～4 μ m, and spinning efficiency is 4.2g/h.
Claims (5)
1. high efficiency electrostatic spinning nozzle, comprise spray orifice (1) and cone (2) two parts, cone (2) comprises the cooperation cone (4) that cooperates with the endoporus of spray orifice (1) again and is used to spray spray wire cone (7) two parts of silk, the cooperation cone (4) of cone (2) cuts out several planes (5) with the mating part five equilibrium of spray orifice (1) endoporus, cut-out is not for cooperating the cooperation conical surface (8) on the cone (4), cooperate the conical surface (8) to cooperate with spray orifice (1) endoporus, spinning solution or melt flow to the conical surface of spray wire cone (7) equably from the gap of each plane (5) of cooperating cone and cutting out and spray orifice (1) endoporus, when the spray screw tap big end circumference of face (9) is evenly distributed with solution or melt, after adding electrostatic field, will form the injection stream (3) of multiply at the spray screw tap big end circumference of face (9).
2. a kind of high efficiency electrostatic spinning nozzle according to claim 1 is characterized in that, spinning solution or melt flow out from the fit clearance of spray orifice (1) and cone (2), and spray wire cone (7) is a solid.
3. a kind of high efficiency electrostatic spinning nozzle according to claim 1 is characterized in that, after cooperation cone (4) cut out plane (5), the corresponding position of spray wire cone (7) small end rounding obtained chamfering (6).
4. a kind of high efficiency electrostatic spinning nozzle according to claim 1 is characterized in that, the diameter of the big end circumference of spray screw tap face (9) of spray wire cone (7) mates with the gradient of the spray wire cone conical surface.
5. a kind of high efficiency electrostatic spinning nozzle according to claim 1 is characterized in that, the conical surface of spray wire cone (7) can be smooth surface or has uniform drainage trough version.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101054018A CN101570898B (en) | 2008-04-30 | 2008-04-30 | Electrostatic spinning spray head with high efficiency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101054018A CN101570898B (en) | 2008-04-30 | 2008-04-30 | Electrostatic spinning spray head with high efficiency |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101570898A CN101570898A (en) | 2009-11-04 |
| CN101570898B true CN101570898B (en) | 2010-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101054018A Expired - Fee Related CN101570898B (en) | 2008-04-30 | 2008-04-30 | Electrostatic spinning spray head with high efficiency |
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| Country | Link |
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| CN (1) | CN101570898B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101985777A (en) * | 2010-11-22 | 2011-03-16 | 北京化工大学 | Trumpet-shaped high-efficiency electrostatic spinning nozzle |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871130B (en) * | 2010-07-06 | 2011-08-10 | 北京化工大学 | Novel straight-strut electrostatic spinning spray nozzle |
| CN101985778B (en) * | 2010-11-22 | 2012-10-17 | 北京化工大学 | Electrostatic spinning multi-strand wire spray head |
| CN102492999B (en) * | 2011-12-21 | 2014-07-09 | 东南大学 | Spray nozzle capable of realizing mass production of nanometer fibers in electrostatic spinning method |
| CN103061040B (en) * | 2013-01-06 | 2015-10-28 | 浙江理工大学 | The electrostatic spinning preparation method of fibroin/polyacrylonitrile-radical antibacterial ultraviolet-resistannanofiber nanofiber membrane |
| CN103320876B (en) * | 2013-06-24 | 2015-09-23 | 江南大学 | A kind of electrostatic spinning linear nozzle |
| CN103668486B (en) * | 2013-12-03 | 2016-05-11 | 北京化工大学 | The auxiliary male cone (strobilus masculinus) type electrostatic spinning nozzle of a kind of air-flow |
| CN103820866B (en) * | 2013-12-04 | 2016-08-17 | 北京化工大学 | A kind of multistage male cone (strobilus masculinus) differential melt-electrospinningjet jet head |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5388980A (en) * | 1991-02-27 | 1995-02-14 | Kyocera Corporation | Spinning nozzle tip structure |
| CN2682089Y (en) * | 2003-12-10 | 2005-03-02 | 同济大学 | Multiple injector electrostatic spinning device |
| CN2753747Y (en) * | 2004-10-27 | 2006-01-25 | 东华大学 | Spinneret plate for electrostatic spinning |
-
2008
- 2008-04-30 CN CN2008101054018A patent/CN101570898B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5388980A (en) * | 1991-02-27 | 1995-02-14 | Kyocera Corporation | Spinning nozzle tip structure |
| CN2682089Y (en) * | 2003-12-10 | 2005-03-02 | 同济大学 | Multiple injector electrostatic spinning device |
| CN2753747Y (en) * | 2004-10-27 | 2006-01-25 | 东华大学 | Spinneret plate for electrostatic spinning |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101985777A (en) * | 2010-11-22 | 2011-03-16 | 北京化工大学 | Trumpet-shaped high-efficiency electrostatic spinning nozzle |
| CN101985777B (en) * | 2010-11-22 | 2012-08-29 | 北京化工大学 | Trumpet-shaped high-efficiency electrostatic spinning nozzle |
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| Publication number | Publication date |
|---|---|
| CN101570898A (en) | 2009-11-04 |
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