CN206015157U - A kind of many fluid jet nozzles of the coaxial electrically spun for preparing composite cellulosic membrane - Google Patents
A kind of many fluid jet nozzles of the coaxial electrically spun for preparing composite cellulosic membrane Download PDFInfo
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- CN206015157U CN206015157U CN201621040102.7U CN201621040102U CN206015157U CN 206015157 U CN206015157 U CN 206015157U CN 201621040102 U CN201621040102 U CN 201621040102U CN 206015157 U CN206015157 U CN 206015157U
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Abstract
A kind of many fluid jet nozzles of the coaxial electrically spun for preparing composite cellulosic membrane, be provided with the controllable injection device of multiple inorganic solutions, the controllable injection device of multiple organic solutions, controllable feeder, gas channel, organic spinning liquid uniformly the metal point liquid runner of transfusion, sheath gas pore array, auxiliary gas outlet, can be independently-powered high voltage power supply, reception device, spinning nozzle group, secondary air flow cushion chamber, surge chamber, grip block, inorganic solution inlet, primary air stream surge chamber, inorganic spinning liquid uniformly point liquid runner of transfusion, point liquid liquid dispenser.Achievable organic solution and the respective uniform mixing jetting of inorganic solution, improve the uniformity of each spinning nozzle feed flow, weaken the repulsive interaction between jet, and by adjusting the liquid supply speed and mass ratio of organic solution and inorganic solution, adapt to the demand for producing nano composite material in enormous quantities.
Description
Technical field
This utility model is related to electrostatic spinning, more particularly, to penetrating a kind of coaxial electrically spun for preparing composite cellulosic membrane more
Stream shower nozzle.
Background technology
In recent years, electrostatic spinning technique is gradually transferred to and prepares composite cellulosic membrane.The research of nano composite material is current
Most dynamic content in new material research field, its not only have the rigidity and property of nano material, and also there is height
The toughness of molecular material, workability, morphology controllable, than many advantages such as the table big, good permeabilities of product, oneself is in filtering material, anti-
The fields such as protective material, zymophore, sensor film, organizational project are applied widely.
The performance of complex fiber material is not only relevant with the structure of nanoparticle, also clustered pattern and the association with nanoparticle
The interfacial structure performance of same performance, the structural behaviour of polymeric matrix, particle and matrix and processing combination process etc. are relevant.Cause
How this, prepare in a large number and be suitable for needs, high-performance, multi-functional organic polymer and inorganic metal/nonmetal oxide
Nano-composite fiber is an important topic of the research field.
In electrostatic spinning early stage research field, single polymer is directly prepared by mainly application electrostatic spinning technique
Into nanofiber, and macromolecule is added to nanoparticles such as metal, inorganic oxide, quasiconductors by modes such as high temperature forgings
In substrate, to obtain the rice composite fibre with corresponding function.This mode, inefficiency produce nano-composite fiber in batches
Technique is crossed as complexity, so improving the yield of electrostatic spinning nano composite fibre, realizes that many materials, the injection of many jets are to grind at present
Send out emphasis.Multiinjector spinning injection is the most simple, means of most convenient that realization prepares composite cellulosic membrane.But it is many in electrostatic spinning
High-pressure electrostatic spinning is loaded with shower nozzle spinning-nozzle, and the whip that each jet has similar single syringe needle system electrostatic spinning is dynamic not
Electric field is also easy to produce between stability, and each shower nozzle and suppresses interference, while space electric field skewness also results in each spray
The spray regime of head is inconsistent, it is difficult to ensure each nozzle while carrying out continual and steady jet injection；Secondly, between jet
Electrostatic repulsion also increases the unstability of jet, so as to cause the nanofiber form chi of the sprayed acquisition of each shower nozzle
Very little widely different, have impact on the raising of prepared nanofiber quality；Furthermore, unitary plastic material liquid feed device is difficult to satisfaction to be had
The demand that machine solution and inorganic solution uniformly mix respectively and coaxially spray, cannot also adjust the confession of organic solution and inorganic solution
Liquid speed degree and mass ratio, it is impossible to realize the rapid batch production of composite nano fiber.
Organic solution and inorganic solution is uniformly coaxially sprayed, adjust the mass ratio and feed flow of organic solution and inorganic solution
Speed, the uniformity for improving each shower nozzle spinning liquid carry out Uniform jet injection to guarantee each shower nozzle, are that electrostatic spinning technique grinds
The emphasis that studies carefully.
Chinese patent CN203238353U discloses a kind of coaxial electrically spun shower nozzle of replaceable inside and outside syringe needle, is by inner tube, admittedly
Determine joint, outer tube and outer layer solution conduit to be constituted；It is characterized in that described inner tube is inserted in outer tube, anchor tip is enclosed within
The outside of inner tube, and be spirally connected with outer tube by screw thread；Outer layer solution conduit is loaded on the through hole in the middle part of outer tube.
Content of the invention
The purpose of this utility model is to provide the coaxial electrically spun for being used for preparing composite cellulosic membrane many fluid jet nozzles.
This utility model is provided with the controllable injection device of multiple inorganic solutions, the controllable injection device of multiple organic solutions, controllable
The metal that feeder, gas channel, organic spinning liquid are uniformly infused divides liquid runner, sheath gas pore array, auxiliary gas outlet
Mouthful, high voltage power supply that can be independently-powered, reception device, spinning nozzle group, secondary air flow cushion chamber, surge chamber, grip block, inorganic
What solution inlet, primary air stream surge chamber, inorganic spinning liquid were uniformly infused divides liquid runner, point liquid liquid dispenser；
The controllable injection device of multiple inorganic solutions is made up of at least two controllable injection devices, each controllable injection dress
Putting and a point liquid liquid dispenser being connected to through liquid conduits, the controllable injection device of multiple organic solutions is by least two controllable injection device groups
Into each controllable injection device is connected to a point liquid liquid dispenser through liquid conduits；Divide liquid liquid dispenser uniform with organic spinning liquid respectively
The metal of transfusion point liquid runner is connected with point liquid runner that inorganic spinning liquid is uniformly infused；The metal that organic spinning liquid is uniformly infused
Liquid runner is divided to be connected with organic inlet of spinning nozzle group, point liquid runner and spinning nozzle group that inorganic spinning liquid is uniformly infused
Inorganic solution inlet be connected, spinning nozzle group is fixed on grip block；Spinning nozzle group includes at least two shower nozzles；Spinning
The shower nozzle that jet head sets include is connected with the positive pole of high voltage power supply that can be independently-powered, reception device and high pressure that can be independently-powered
The negative pole of power supply is connected, and minus earth.Sheath gas pore array, controllable supply is equipped with below each shower nozzle of spinning nozzle group
Device is connected by gas channel with sheath gas pore array, and sheath gas pore array is coaxially arranged with auxiliary gas outlet；Air-flow
Passage connects secondary air flow cushion chamber through primary air stream surge chamber, and the outlet of the metal that organic spinning liquid is uniformly infused point liquid runner connects
Surge chamber, the outlet of point liquid runner that inorganic spinning liquid is uniformly infused connect surge chamber；Secondary air enters one by gas channel
Level air-flow buffer room, is shunted by secondary air flow surge chamber in downward transmitting procedure, and final auxiliary gas is through sheath gas pore
Array is passed through after flowing out is discharged by auxiliary gas outlet.
This utility model provides a kind of electrostatic spinning apparatus, including the controllable injection device of multiple inorganic solutions, multiple organic
The controllable injection device of solution, the organic spinning liquid point liquid stream that uniformly the metal point liquid runner of transfusion, inorganic spinning liquid are uniformly infused
Road, spinning nozzle group, high voltage power supply, reception device and extensive auxiliary sheaths air-flow are for uniform supply flow passage structure；Spinning
Jet head sets are fixed on grip block；Adjustable high voltage power supply positive pole is connected with each shower nozzle respectively, minus earth；By multiple nothings
The gold that the controllable injection device of machine solution, the controllable injection device of multiple organic solutions, point liquid liquid dispenser, organic spinning liquid are uniformly infused
The liquid distributing device that category liquid distributing device and inorganic spinning liquid are uniformly infused, provides spinning liquid to spinning nozzle group；By high voltage power supply
Offer high pressure is provided with spinning nozzle group, makes between spinning nozzle group and reception device, to form high voltage electric field；By controllable supply
Device, primary air stream surge chamber and secondary air flow surge chamber provided auxiliary sheaths air-flow, to ensure in secondary air transmitting procedure
The uniformity of velocity flow profile；Sheath gas pore is disposed with around spinning-nozzle, and sheath gas pore constitutes sleeve configuration by the frustum of a cone and cylinder
Gas passage, acts on very strong confined focusing, can reduce the static interference between Multi needle electrostatic spinning jet.
This utility model carries out injection batch by multiple nozzles and continuously prepares composite nano fiber, significantly improves Static Spinning
The efficiency of silk, matches somebody with somebody liquid by introducing the controllable injection device of multiple inorganic solutions, the controllable injection device of multiple organic solutions, point liquid
The metal that device, organic spinning liquid are uniformly infused divides liquid runner and the uniform point liquid runner that infuses of inorganic spinning liquid, makes different quality
Organic spinning liquid of ratio and inorganic spinning liquid are uniform respectively to be mixed；Uniform electric field is formed with reception device by high voltage power supply, is made
For electrostatic spinning jet, the confined focusing in combination with sheath gas pore array acts on, reduces the static interference between jet, change
The unstability of jet during kind electrostatic spinning, accelerate electrostatic spinning speed, further improve electrostatic spray efficiency and
Further refinement jet and nanofiber, reduce the diameter of Electrospun nano-fibers, improve the matter of Electrospun nano-fibers
Amount.
This utility model is intended to the controllable injection device of multiple inorganic solutions reasonable in design, the controllable injection of multiple organic solutions
Device, extensive auxiliary sheaths air-flow are for uniform supply flow passage structure, respective uniform to realize organic solution and inorganic solution
Mixing jetting, improves the uniformity of each spinning nozzle feed flow, weakens the repulsive interaction between jet, and by adjusting organic solution
With the liquid supply speed and mass ratio of inorganic solution, adapt to the demand for producing nano composite material in enormous quantities.
Description of the drawings
Structure composition schematic diagrams of the Fig. 1 for this utility model embodiment.
Specific embodiment
Referring to Fig. 1, this utility model embodiment is provided with the controllable injection device 1 of multiple inorganic solutions, multiple organic solutions can
Metal point liquid runner 5, sheath gas gas that control injection device 2, controllable feeder 3, gas channel 4, organic spinning liquid are uniformly infused
Hole array 6, auxiliary gas outlet 7, can be independently-powered high voltage power supply 8, reception device 9, spinning nozzle group 10, secondary air flow
Cushion chamber 11, surge chamber 12, grip block 13, inorganic solution inlet 14, primary air stream surge chamber 15, inorganic spinning liquid are uniformly defeated
Point liquid runner 16 of liquid, point liquid liquid dispenser 17；The controllable injection device 1 of multiple inorganic solutions is by least two controllable injections dresses
Composition is put, each controllable injection device is connected to a point liquid liquid dispenser 17 through liquid conduits, the controllable injection device 2 of multiple organic solutions
It is made up of at least two controllable injection devices, each controllable injection device is connected to a point liquid liquid dispenser 17 through liquid conduits；Divide liquid
Point liquid runner 16 that the metal point liquid runner 5 and inorganic spinning liquid that liquid dispenser is uniformly infused with organic spinning liquid respectively is uniformly infused
It is connected；The metal point liquid runner 5 that organic spinning liquid is uniformly infused is connected with organic inlet of spinning nozzle group 10, inorganic spinning
Point liquid runner 16 that liquid is uniformly infused is connected with the inorganic solution inlet 14 of spinning nozzle group 10, and spinning nozzle group 10 is fixed on
On grip block 13；Spinning nozzle group 10 includes at least two shower nozzles；The shower nozzle that spinning nozzle group 10 includes with can be independently-powered
The positive pole of high voltage power supply 8 is connected, and reception device 9 is connected with the negative pole of high voltage power supply 8 that can be independently-powered, and negative pole connects
Ground.Sheath gas pore array 6 is equipped with below each shower nozzle of spinning nozzle group 10, and controllable feeder 3 is led to sheath gas pore array 6
Cross gas channel 4 to connect, sheath gas pore array 6 is coaxially arranged with auxiliary gas outlet 7；Gas channel 4 is slow through primary air stream
Rush room 15 and connect secondary air flow cushion chamber 11, the outlet of the metal that organic spinning liquid is uniformly infused point liquid runner 5 connects surge chamber 12, nothing
The outlet of point liquid runner 16 that machine spinning liquid is uniformly infused connects surge chamber 12；Secondary air enters one-level gas by gas channel 4
Stream surge chamber 15, is shunted by secondary air flow surge chamber 11 in downward transmitting procedure, and final auxiliary gas is through sheath gas pore
Array 6 is passed through after flowing out is discharged by auxiliary gas outlet 7.
In FIG, the controllable injection device 1 of multiple inorganic solutions can control the speed of multiple inorganic spinning liquid supplies, make
Multiple inorganic spinning liquid enter point liquid runner 16 that inorganic spinning liquid is uniformly infused after entering point 17 uniform mixing of liquid liquid dispenser；Many
The speed that the controllable injection device 2 of organic solution can control multiple organic spinning liquid supplies is planted, makes organic spinning liquid enter a point liquid
Liquid dispenser enters the metal point liquid runner 5 that organic spinning liquid is uniformly infused after uniformly mixing.Multiple inorganic spinnings of different ratio
Liquid uniformly mixes in point liquid liquid dispenser 17；Organic spinning liquid of different ratio uniformly mixes in point liquid liquid dispenser；It is mixed with
Machine spinning liquid enters surge chamber 12 after entering the metal point liquid runner 5 that organic spinning liquid is uniformly infused, mixing inorganic spinning liquid enters
Surge chamber 12 is entered after entering point liquid runner 16 that inorganic spinning liquid is uniformly infused；Organic solution and buffered 12 He of room of inorganic solution
The coaxial jet spinning of liquid outlet.By controlling multiple controllable injection devices 1 of inorganic solution and the controllable injection dress of multiple organic solutions
2 flow velocity is put, the organic solution coaxial composite fibre different with inorganic solution mass ratio can also be produced.
With PVDF/Al2O3As a example by composite lithium ion cell barrier film, by PVDF and DMF/ acetone (volume ratio 7: 3) mixed solvent
16% PVDF organic spinning liquid is made into for 16: 84 in mass ratio；Weigh PVP the and 3g aluminium oxidies of 3g, be added to 24mLDMF and
The mixeding liquid volume of glycerol compares 5:The Al that mass fraction is 4% is made in 12O3Inorganic spinning liquid.In figure, multiple inorganic solutions
Controllable injection device 1 controls Al2O3The speed of inorganic spinning liquid supply, makes Al2O3It is equal that inorganic spinning liquid enters point liquid liquid dispenser 17
Point liquid runner 16 that inorganic spinning liquid is uniformly infused is entered after even mixing；The controllable injection device 2 of multiple organic solutions controls PVDF
The speed of organic spinning liquid supply, makes the organic spinning liquid of PVDF enter organic spinning liquid after entering the uniform mixing of point liquid liquid dispenser equal
The metal of even transfusion point liquid runner 5.The metal point liquid runner 5 that the organic spinning liquid of PVDF enters the uniform transfusion of organic spinning liquid is laggard
Enter surge chamber 12, Al2O3Inorganic spinning liquid enters surge chamber 12 after entering point liquid runner 16 that inorganic spinning liquid is uniformly infused；
PVDF organic solutions and Al2O3The buffered room 12 of inorganic solution and liquid outlet coaxially spray PVDF/Al2O3Composite nano fiber；Multiple
Conjunction nano fiber outer layer is PVDF organic fibrous materials, and internal layer is Al2O3Colloidal sol, forms nucleocapsid structure.By controlling electrospinning dress
The platform program that puts, can pass through this many jet spray head device and produce PVDF/Al in batches2O3Composite lithium ion cell barrier film, core-shell structure copolymer
Structure PVDF/Al2O3The composite lithium ion cell barrier film TPO micropore conventional compared to business-like lithium ion battery separator
Film, its resistance to percent thermal shrinkage, stretch-proof fracture energy and chemical property are significantly improved.
In the present embodiment, spinning nozzle group 10 is fixed on grip block 13；Spinning nozzle group 10 includes two or more
Multiple shower nozzles.The shower nozzle that spinning nozzle group 10 includes is connected with the positive pole of high voltage power supply 8 that can be independently-powered, reception device 9
It is connected with the negative pole of high voltage power supply 8 that can be independently-powered, and minus earth.High voltage power supply 8 that can be independently-powered sprays spinning
Formed and electrostatic spinning jet direction identical uniform electric field between head group 10 and reception device 9, act on spinning jet, you can
Reduce the static interference between jet, improve the unstability of jet during electrostatic spinning, accelerate the speed of electrostatic spinning, carry
The efficiency of high electrostatic spinning, improves the quality of Electrospun nano-fibers.
Sheath gas pore array 6 is equipped with this utility model below each shower nozzle of spinning nozzle group, coaxial with spinning syringe needle
Arrangement.Supplied to sheath gas pore by controllable feeder 3, secondary air enters primary air stream surge chamber by gas channel 4
15, shunted by secondary air flow surge chamber 11 in downward transmitting procedure, final auxiliary gas is flowed out through sheath gas pore array 6
By by auxiliary gas outlet 7 discharge.Sleeve configuration auxiliary gas outlet 7 can play focussing force to secondary air, from
And the constraint to electrostatic spinning jet is realized, to weaken the interference between electrostatic spinning jet.
This utility model provides a kind of with the controllable injection device of multiple inorganic solutions, the controllable injection dress of multiple organic solutions
Put, sheaths air-flow is aided on a large scale for uniformly supplying the metal liquid distributing device that flow passage structure, organic spinning liquid are uniformly infused, inorganic
The multiinjector electrostatic spinning apparatus of the liquid distributing device that spinning liquid is uniformly infused, make multiple organic solutions and inorganic solution uniform respectively
Mixing is simultaneously coaxially sprayed, while by the mass ratio and liquid supply speed that adjust organic solution and inorganic solution, improving each shower nozzle
The uniformity of spinning liquid, it is ensured that the stable quick of many injection streams is sprayed, and large area carries out spinning further to improve electrostatic spinning
Efficiency.Sheath gas pore array is equipped with below each shower nozzle of spinning nozzle group, coaxially arranged with spinning syringe needle.By controllable supply
Device is supplied to sheath gas pore, and sleeve configuration auxiliary gas outlet can play focussing force to secondary air, right so as to realize
The constraint of electrostatic spinning jet, reduces static interference between jet, promotes electrostatic spinning being uniformly distributed on collection device, carries
The uniformity of composite nano fiber collected by high, improves the degree of irregularity of composite nano fiber edge collection, and can refine and penetrate
The diameter of stream, improves the quality of electrostatic spinning.
Claims (1)
1. many fluid jet nozzles of a kind of coaxial electrically spun for preparing composite cellulosic membrane, it is characterised in that being provided with multiple inorganic solutions can
Control injection device, the controllable injection device of multiple organic solutions, controllable feeder, gas channel, organic spinning liquid are uniformly infused
Metal point liquid runner, sheath gas pore array, auxiliary gas outlet, can be independently-powered high voltage power supply, reception device, spinning
Jet head sets, secondary air flow cushion chamber, surge chamber, grip block, inorganic solution inlet, primary air stream surge chamber, inorganic spinning liquid
Point liquid runner of uniform transfusion, point liquid liquid dispenser；
The controllable injection device of multiple inorganic solutions is made up of at least two controllable injection devices, each controllable injection device warp
Liquid conduits are connected to a point liquid liquid dispenser, and the controllable injection device of multiple organic solutions is made up of at least two controllable injection devices,
Each controllable injection device is connected to a point liquid liquid dispenser through liquid conduits；Liquid liquid dispenser is divided uniformly to infuse with organic spinning liquid respectively
Metal point liquid runner and point liquid runner of the uniform transfusion of inorganic spinning liquid be connected；The metal point liquid that organic spinning liquid is uniformly infused
Runner is connected with organic inlet of spinning nozzle group, point liquid runner and the nothing of spinning nozzle group that inorganic spinning liquid is uniformly infused
Machine solution inlet is connected, and spinning nozzle group is fixed on grip block；Spinning nozzle group includes at least two shower nozzles；Spinning nozzle
The shower nozzle that group includes is connected with the positive pole of high voltage power supply that can be independently-powered, reception device and high voltage power supply that can be independently-powered
Negative pole be connected, and minus earth is equipped with sheath gas pore array, controllable feeder below each shower nozzle of spinning nozzle group
It is connected by gas channel with sheath gas pore array, sheath gas pore array is coaxially arranged with auxiliary gas outlet；Gas channel
Secondary air flow cushion chamber is connect through primary air stream surge chamber, the outlet of the metal that organic spinning liquid is uniformly infused point liquid runner connects buffering
Room, the outlet of point liquid runner that inorganic spinning liquid is uniformly infused connect surge chamber；Secondary air enters one-level gas by gas channel
Stream surge chamber, is shunted by secondary air flow surge chamber in downward transmitting procedure, and final auxiliary gas is through sheath gas pore array
Pass through after outflow and discharged by auxiliary gas outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621040102.7U CN206015157U (en) | 2016-09-07 | 2016-09-07 | A kind of many fluid jet nozzles of the coaxial electrically spun for preparing composite cellulosic membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621040102.7U CN206015157U (en) | 2016-09-07 | 2016-09-07 | A kind of many fluid jet nozzles of the coaxial electrically spun for preparing composite cellulosic membrane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206015157U true CN206015157U (en) | 2017-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621040102.7U Withdrawn - After Issue CN206015157U (en) | 2016-09-07 | 2016-09-07 | A kind of many fluid jet nozzles of the coaxial electrically spun for preparing composite cellulosic membrane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206015157U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106119996A (en) * | 2016-09-07 | 2016-11-16 | 厦门大学 | For preparing the many fluid jet nozzles of the coaxial electrically spun of composite cellulosic membrane |
| CN108950700A (en) * | 2017-05-19 | 2018-12-07 | 南京理工大学 | A kind of electrostatic spinning apparatus and method preparing fluffy state nanofiber |
| CN109267160A (en) * | 2018-11-06 | 2019-01-25 | 厦门大学 | A kind of arcuate array electrostatic spinning nozzle with the constraint of sheath gas |
| CN110284203A (en) * | 2019-06-21 | 2019-09-27 | 东华大学 | A kind of multicomponent hole that electric field is uniformly distributed set hole nozzle |
| CN110484979A (en) * | 2019-06-21 | 2019-11-22 | 东华大学 | A kind of hole that electric field is uniformly distributed set hole nozzle |
| CN111229489A (en) * | 2020-01-13 | 2020-06-05 | 厦门大学 | High-frequency core-shell structure micro-droplet injection device |
-
2016
- 2016-09-07 CN CN201621040102.7U patent/CN206015157U/en not_active Withdrawn - After Issue
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106119996A (en) * | 2016-09-07 | 2016-11-16 | 厦门大学 | For preparing the many fluid jet nozzles of the coaxial electrically spun of composite cellulosic membrane |
| CN108950700A (en) * | 2017-05-19 | 2018-12-07 | 南京理工大学 | A kind of electrostatic spinning apparatus and method preparing fluffy state nanofiber |
| CN109267160A (en) * | 2018-11-06 | 2019-01-25 | 厦门大学 | A kind of arcuate array electrostatic spinning nozzle with the constraint of sheath gas |
| CN109267160B (en) * | 2018-11-06 | 2019-12-27 | 厦门大学 | Arc array electrostatic spinning nozzle with sheath gas restraint |
| CN110284203A (en) * | 2019-06-21 | 2019-09-27 | 东华大学 | A kind of multicomponent hole that electric field is uniformly distributed set hole nozzle |
| CN110484979A (en) * | 2019-06-21 | 2019-11-22 | 东华大学 | A kind of hole that electric field is uniformly distributed set hole nozzle |
| CN110284203B (en) * | 2019-06-21 | 2021-08-06 | 东华大学 | Multi-component hole and trepanning nozzle with uniformly distributed electric field |
| CN110484979B (en) * | 2019-06-21 | 2021-08-06 | 东华大学 | Electric field uniform distribution's hole cover hole nozzle |
| CN111229489A (en) * | 2020-01-13 | 2020-06-05 | 厦门大学 | High-frequency core-shell structure micro-droplet injection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170315 Effective date of abandoning: 20180216 |