CN113512773A - Quick detachable coaxial syringe needle device of fuse-element electrostatic spinning - Google Patents
Quick detachable coaxial syringe needle device of fuse-element electrostatic spinning Download PDFInfo
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- CN113512773A CN113512773A CN202110615377.8A CN202110615377A CN113512773A CN 113512773 A CN113512773 A CN 113512773A CN 202110615377 A CN202110615377 A CN 202110615377A CN 113512773 A CN113512773 A CN 113512773A
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- needle
- connector
- needle tube
- cortex
- core layer
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- 238000010041 electrostatic spinning Methods 0.000 title claims abstract description 31
- 239000012792 core layer Substances 0.000 claims abstract description 56
- 239000010410 layer Substances 0.000 claims abstract description 40
- 238000010438 heat treatment Methods 0.000 claims abstract description 27
- 238000001523 electrospinning Methods 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 5
- 239000000155 melt Substances 0.000 abstract description 10
- 229920000642 polymer Polymers 0.000 description 20
- 238000005516 engineering process Methods 0.000 description 11
- 239000000835 fiber Substances 0.000 description 11
- 230000001054 cortical effect Effects 0.000 description 9
- 239000000463 material Substances 0.000 description 9
- 238000009987 spinning Methods 0.000 description 9
- 239000011162 core material Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000000975 bioactive effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000003013 cytotoxicity Effects 0.000 description 1
- 231100000135 cytotoxicity Toxicity 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000005686 electrostatic field Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
The invention discloses a melt electrostatic spinning coaxial needle head device easy to disassemble, which comprises a core layer needle tube and a skin layer needle tube, and further comprises a core layer needle tube and a skin layer needle tube, wherein the core layer needle tube is arranged in the skin layer needle tube, the core layer needle tube is connected with the core layer needle tube through a connector I, the core layer needle tube is detachably connected with the connector I, and the connector I is detachably connected with the skin layer needle tube; the cortex needle tube is connected with the cortex needle tube through the second connector, and the cortex needle tube is detachably connected with the second connector. The coaxial needle device of melt electrostatic spinning who improves current coaxial needle device of melt electrostatic spinning is difficult to dismantle, washs the problem of difficulty, heating and voltage application interact, provides the coaxial needle device of melt electrostatic spinning who easily dismantles and equipment, washs the convenience and can heat simultaneously and add voltage.
Description
Technical Field
The invention belongs to the field of melt electrostatic spinning equipment, and particularly relates to a melt electrostatic spinning coaxial needle device easy to disassemble.
Background
For decades, the fiber prepared by the electrostatic spinning technology has the advantages of small diameter, large specific surface area, high porosity and the like, and has good application prospect in the field of biomedicine. The electrostatic spinning technology can be divided into a solution electrostatic spinning technology and a melt electrostatic spinning technology, although the solution electrostatic spinning technology can dissolve a polymer matrix and bioactive components in the same solvent to form a uniform solution and has the advantages of easily controllable concentration and the like, the residue of an organic solvent not only can influence the fiber morphology, but also can possibly cause cytotoxicity and be not beneficial to cell survival, and the application in the field of biomedicine has limitations.
Melt electrospinning, which heats a polymer to a molten state and subjects the molten polymer to high-voltage electrostatic spinning, is an important component in the field of electrospinning technology. Compared with the traditional solution electrostatic spinning, the fiber obtained by melt electrostatic spinning has the advantage of no toxicity, and is a safe and green spinning process. It has higher application value in the fields of medical treatment and biological engineering.
The prior art of melt electrostatic spinning mainly comprises a single-needle electrostatic spinning technology and a coaxial electrostatic spinning technology. The single-needle melt electrostatic spinning technology can only use one polymer particle for melting spinning, and the prepared fiber has single function. In contrast, many scholars at home and abroad make a series of researches on coaxial electrostatic spinning technology, 2002 i.gloscertales et al first propose feasibility of preparing superfine fibers with a sheath-core structure, the fiber with the sheath-core structure is formed by coating one material on another material and has a double-layer structure, compared with the fiber formed by the traditional single material, the fiber with the sheath-core structure has multiple properties, and the fiber with the sheath-core structure is widely applied to the fields of electronic communication, biomedicine and the like due to organic combination of multiple properties of the sheath-core material and flexible material selection space. The coaxial electrostatic spinning technology can be used for preparing the multi-performance superfine skin-core structure fiber, and the unique application of the fiber in various fields is realized. However, in the coaxial electrostatic spinning device for the melt, the coaxial needle has the problems of difficult disassembly and difficult cleaning, so the structure of the existing coaxial needle device for the melt electrostatic spinning is improved to solve the technical problems.
Disclosure of Invention
The invention aims to provide a melt electrostatic spinning coaxial needle device which is easy to disassemble, solves the problems that the existing melt electrostatic spinning coaxial needle device is difficult to disassemble and clean, and is easy to disassemble, assemble and convenient to clean.
In order to solve the technical problems, the following technical scheme is adopted:
the easy-to-detach coaxial needle head device for melt electrostatic spinning comprises a core layer needle tube and a skin layer needle tube, and is characterized by further comprising a core layer needle tube and a skin layer needle tube, wherein the core layer needle tube is arranged in the skin layer needle tube and is connected with the core layer needle tube through a connector I; the cortex needle tube is connected with the cortex needle tube through the second connector, and the cortex needle tube is detachably connected with the second connector.
Further, the core layer needle tube is connected with the first connector through a clamping groove rotary buckle structure, and the clamping groove rotary buckle structure is used for connecting or disassembling the core layer needle tube and the first connector; the cortex needle tube is connected with the first connector through the first threaded connection structure, and the first connector and the second connector are connected or disassembled through the first threaded connection structure; the cortex needle tube is connected with the second connector through the second threaded connection structure, and the two are connected or detached by the second threaded connection structure. The detachable connection between the components is realized by the clamping groove rotary buckle mode and the thread connection mode respectively, and the two connection modes have simple structure, easy manufacture, low cost and strong practicability; and the disassembly and assembly are convenient to operate, easy to operate, free of other tools, and convenient to clean, maintain or replace parts and the like.
Further, the cortex needle tube comprises a cortex needle head, and the cortex needle head is provided with a first heating device; the second connector is provided with a second heating device. The temperature of the polymer is kept constant through the first heating device and the second heating device, so that the electrostatic spinning effect of the melt is improved. The heating temperature of the heating device I is the highest melting temperature required by the core layer material and the skin layer material, and the heating temperature of the heating device II is the temperature consistent with that of the skin layer needle cylinder temperature control module.
Furthermore, the other end of the first connector is connected with the core layer needle cylinder through the third threaded connection structure, the third threaded connection structure is used for connecting or disassembling the first core layer needle cylinder and the first connector, the purpose that the first core layer needle cylinder and the first connector are detachable is achieved, the threaded connection mode is convenient to disassemble and assemble, the structure is simple, and the practicability is high.
And furthermore, the connector II comprises a conical connector which is connected with the conduit through the conical connector, the other end of the conduit is connected with the connector III, the connector tee is connected with the cortex needle cylinder through the threaded connection structure IV, and the connector tee is connected with or detached from the cortex needle cylinder through the threaded connection structure IV. The conical interface is used for connecting a conduit, and the conical structural characteristics of the conical interface can firmly bite the conduit, so that the connection is firm and convenient; the purpose of disassembling and assembling the connector III and the cortex needle cylinder is achieved through the threaded connection structure IV, the threaded connection mode is convenient to disassemble and assemble, the structure is simple, and the practicability is high.
Furthermore, the first connector, the second connector and the third connector are both luer metal connectors. Luer metal joint firm in connection, structural strength is high.
Furthermore, the cortex needle head is connected with the cortex needle tube through a fifth threaded connection structure, and the fifth threaded connection structure is used for connecting or disassembling the two. Realize dismantled and assembled purpose between cortex syringe needle and the cortex needle tubing, the convenient dismantlement of threaded connection mode and equipment, simple structure, the practicality is strong.
Furthermore, a high-voltage power supply retaining ring is sleeved on the first connector and connected with the high-voltage power supply module. And applying voltage to the coaxial needle head through a high-voltage power supply retaining ring connected with the high-voltage power supply module to form an electrostatic electric field.
Furthermore, the core layer needle cylinder and the skin layer needle cylinder are both connected to the pneumatic module, the pneumatic module is used as a spinning power source, the polymer is extruded into the coaxial needle head from the core layer needle cylinder and the skin layer needle cylinder, and the mass flow rate of the polymer extruded in a unit can be controlled.
Furthermore, the outer sides of the core layer needle cylinder and the skin layer needle cylinder are both provided with temperature control modules. The temperature control module controls the temperature of the polymer in the core layer needle cylinder and the skin layer needle cylinder to meet the requirement of spinning temperature, and the temperature of the polymer is kept constant in the spinning process.
Due to the adoption of the technical scheme, the method has the following beneficial effects:
(1) the invention provides a melt electrostatic spinning coaxial needle device easy to disassemble, before use, two different polymer particles are loaded into a corresponding printing needle cylinder according to skin-core structure or performance requirements, the polymer in the needle cylinder is heated to a molten state, the numerical value of a pneumatic module is adjusted through set parameters, and voltage is applied to enable polymer droplets to drip down to form jet flow. In the spinning process, the temperature of the core layer needle tube and the skin layer needle tube at the coaxial needle head and the temperature of the second connector at one side of the skin layer needle tube are always kept constant, the problem that the needle tubes are blocked in the process of injecting a core layer polymer melt or a skin layer polymer melt into the coaxial needle head is avoided, and meanwhile, the coaxial needle head is fixedly connected with the first heating device and the second heating device, so that the electrostatic electric field distribution formed by the applied high voltage is not influenced while the temperature of the coaxial needle head is kept constant.
(2) If want to carry out the sample preparation of next a set of different materials, can wait to accomplish sample preparation after, close high voltage power supply module, temperature control device and pneumatic module, wait that sandwich layer cylinder and cortex cylinder stand to the room temperature, dismantle two heating device of coaxial syringe needle department, unscrew each joint, dismantle sandwich layer needle tubing, cortex syringe needle, joint one, joint two and pipe, the part of coaxial syringe needle is dismantled basically this moment.
(3) After the part of the coaxial syringe needle is dismantled, the cortex needle tube, the cortex needle and each joint are cleaned by using corresponding medicaments, the core layer needle tube and the catheter assembly which are dried and replaced can be continuously used for preparing the next group of samples, and meanwhile, the core layer needle tube and the cortex needle tube can be dismantled and replaced. The parts in the coaxial needle head can be detached, so that the coaxial needle head can be recycled after being cleaned, and only the core layer needle tube and the guide tube are replaced according to sample preparation requirements.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1 is an overall schematic view of a melt electrospinning coaxial needle apparatus;
FIG. 2 is a schematic view of a core layer syringe and a skin layer syringe connected with a coaxial needle;
FIG. 3 is a schematic view of a coaxial needle;
FIG. 4 is a schematic view taken along direction A in FIG. 3;
FIG. 5 is a cross-sectional view of the coaxial needle;
FIG. 6 is an exploded view of the coaxial needle in the elevational direction;
FIG. 7 is an isometric exploded view of coaxial needle angle a;
fig. 8 is an isometric exploded view of coaxial needle angle b.
Detailed Description
As shown in fig. 1 to 8, an easily detachable coaxial needle device for melt electrospinning comprises a core layer needle tube 9 and a skin layer needle tube 10, and further comprises a core layer needle tube 1 and a skin layer needle tube 2, wherein the core layer needle tube 1 is installed in the skin layer needle tube 2, the core layer needle tube 1 is connected with the core layer needle tube 9 through a first connector 4, the core layer needle tube 1 is detachably connected with the first connector 4, and the first connector 4 is detachably connected with the skin layer needle tube 2; the cortex needle tube 2 is connected with the cortex needle tube 10 through the second connector 7, and the cortex needle tube 2 is detachably connected with the second connector 7.
The core layer needle tube 1 includes a thick tube part and a thin tube part, and the polymer of the core layer needle tube 9 is injected into the core layer needle tube 1, is input into the thin tube part through the thick tube part, and is then injected from the thin tube part. The skin layer needle tube 2 coats the core layer needle tube 1, and the polymer of the skin layer needle tube 10 is ejected through an inner cavity channel of the skin layer needle tube, so that a skin-core structure sample is prepared.
The detachable connection characteristics are specifically as follows:
1. the core layer needle tube 1 is connected with the first connector 4 through a clamping groove rotary buckle structure 16, and the clamping groove rotary buckle structure 16 is used for connecting or disassembling the first connector and the second connector; the clamping groove rotary buckle structure 16 comprises a rotary buckle 162 and a clamping groove 161 which are matched with each other, the rotary buckle 162 and the clamping groove 161 are clamped after being connected in a rotating mode, the purpose of connecting the core layer needle tube 1 with the connector I4 is achieved, and the disassembly is convenient.
2. The cortical needle tube 2 is connected with the first connector 4 through a first threaded connection structure 21, and the cortical needle tube and the first connector are connected or disassembled through the first threaded connection structure 21; this threaded connection structure 21 realizes threaded connection through the internal thread and the external screw thread that match each other, only needs to screw up and unscrew can be connected or dismantle cortex needle tubing 2 and connect one 4, and is very convenient.
3. The cortical needle tube 2 is connected with the second connector 7 through a second threaded connection structure 71, and the cortical needle tube 2 and the second connector are connected or disconnected through the second threaded connection structure 71. Similarly, the second threaded connection structure 71 is in threaded connection with the external thread through the internal thread and the external thread which are matched with each other, and the cortical needle tube 2 and the second connector 7 can be connected or detached only by screwing and unscrewing, so that the device is very convenient and fast.
The detachable connection between the components is realized by the clamping groove rotary buckle mode and the thread connection mode respectively, and the two connection modes have simple structure, easy manufacture, low cost and strong practicability; and the disassembly and assembly are convenient to operate, easy to operate, free of other tools, and convenient to clean, maintain or replace parts and the like.
The cortex needle tube 2 comprises a cortex needle head 3 at the lower end, the cortex needle head 3 is provided with a first heating device 6, and the first heating device 6 is sleeved on the outer side of the cortex needle head 3; the second joint 7 is provided with a second heating device 8, and the second heating device 8 is sleeved on the outer side of the second joint 7. The temperature of the polymer is kept constant through the first heating device 6 and the second heating device 8, and the electrostatic electric field distribution formed by the applied high voltage is not influenced, so that the melt electrostatic spinning effect is improved. The heating temperature of the first heating device 6 is the highest melting temperature required by the skin layer material and the core layer material, and the heating temperature of the second heating device 8 is the same as the temperature of the temperature control module 15 of the skin layer needle cylinder 10.
The cortical needle tube 3 is connected with the cortical needle tube 2 through a five-thread connecting structure 31, and the cortical needle tube 3 and the cortical needle tube 2 are connected or disconnected through the five-thread connecting structure 31. Five 31 internal threads and the external screw thread through mutual matching of this threaded connection structure realize threaded connection, only need screw up and screw out can be connected or dismantle cortex syringe needle 3 and cortex needle tubing 2, and is very convenient. Realize dismantled and assembled purpose between cortex syringe needle 3 and the cortex needle tubing 2, the convenient dismantlement of threaded connection mode and equipment, simple structure, the practicality is strong.
The first heating device 6 and the second heating device 8 are both insulating pre-embedded ceramic heating rings, and are connected with corresponding power supplies to achieve the purpose of electric heating.
The other end of the first connector 4 is connected with the core layer needle cylinder 9 through a threaded connection structure III 41, and the two are connected or detached through the threaded connection structure III 41; this threaded connection structure three 41 realizes threaded connection through the internal thread and the external screw thread that match each other, only needs to screw up and unscrew can be connected or the joint of dismantlement 4 and sandwich layer cylinder 9, and is very convenient. The purpose that the core layer needle cylinder 9 and the joint I4 are detachable is achieved, the threaded connection mode is convenient to detach and assemble, the structure is simple, and the practicability is high.
The second connector 7 comprises a conical connector 72, the conical connector 72 is connected with the catheter 12, the other end of the catheter 12 is connected with the third connector 11, the third connector 11 is connected with the cortex needle cylinder 10 through a fourth threaded connection structure (marked in the figure, the structure of the third connector is the same as that of other threaded connection structures), and the fourth connector is connected or disconnected with the cortex needle cylinder 10 through the fourth threaded connection structure. This threaded connection structure is four realizes threaded connection through the internal thread and the external screw thread that match each other, only needs to screw up and unscrew can be connected or the three 11 and the cortex cylinder 10 of detachable joint, and is very convenient.
The conical interface 72 is used for connecting the catheter 12, and the conical structural characteristics of the conical interface can firmly bite the catheter 12, so that the connection is firm and convenient; the purpose of disassembling and assembling the connector III 11 and the cortex needle cylinder 10 is achieved through the threaded connection structure IV, the threaded connection mode is convenient to disassemble and assemble, the structure is simple, and the practicability is high.
The guide pipe 12 is made of polytetrafluoroethylene pipe and is durable.
The first connector 4, the second connector 7 and the third connector 11 are all luer metal connectors. Luer metal joint firm in connection, structural strength is high.
The first connector 4 is sleeved with a high-voltage power supply retaining ring 5, and the high-voltage power supply retaining ring 5 is connected with a high-voltage power supply module 14. An electrostatic field is formed by applying a voltage to the coaxial needle through a high voltage power supply retaining ring 5 connected with a high voltage power supply module 14.
The core layer needle cylinder 9 and the skin layer needle cylinder 10 are both connected to the pneumatic module 13, the pneumatic module 13 is used as a spinning power source, polymers are extruded into the coaxial needle heads from the core layer needle cylinder 9 and the skin layer needle cylinder 10, and the mass flow rate of extrusion in a unit can be controlled.
And the outer sides of the core layer needle cylinder 9 and the skin layer needle cylinder 10 are both provided with a temperature control module 15. The temperature control module 15 controls the temperature of the polymer in the core layer needle cylinder 9 and the skin layer needle cylinder 10 to meet the requirement of spinning temperature, and the temperature of the polymer is kept constant in the spinning process.
The temperature control module 15 comprises a heat conducting cylinder, an electric heating ferrule and an insulating cover barrel, and is sleeved on the core layer needle cylinder 9 and the skin layer needle cylinder 10.
The above is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions or modifications made on the basis of the present invention to solve the same technical problems and achieve the same technical effects are all covered in the protection scope of the present invention.
Claims (10)
1. The easy-to-detach coaxial needle head device for melt electrostatic spinning comprises a core layer needle tube and a skin layer needle tube, and is characterized by further comprising a core layer needle tube and a skin layer needle tube, wherein the core layer needle tube is installed in the skin layer needle tube and is connected with the core layer needle tube through a connector I; the cortex needle tube is connected with the cortex needle tube through the second connector, and the cortex needle tube is detachably connected with the second connector.
2. The detachable coaxial needle device for melt electrospinning according to claim 1, wherein: the core layer needle tube is connected with the first connector through a clamping groove rotary buckle structure, and the clamping groove rotary buckle structure is used for connecting or disassembling the core layer needle tube and the first connector; the cortex needle tube is connected with the first connector through a first threaded connection structure, and the first connector are connected or disassembled by means of the first threaded connection structure; the cortex needle tube is connected with the second connector through a second threaded connection structure, and the cortex needle tube is connected with or detached from the second connector through the second threaded connection structure.
3. The detachable melt electrospinning coaxial needle device according to claim 1 or 2, wherein: the cortex needle tube comprises a cortex needle head, and the cortex needle head is provided with a first heating device; and the second joint is provided with a second heating device.
4. The detachable coaxial needle device for melt electrospinning according to claim 2, wherein: the other end of the first connector is connected with the core layer needle cylinder through a third threaded connection structure, and the first connector and the core layer needle cylinder are connected or disassembled through the third threaded connection structure.
5. The detachable coaxial needle device for melt electrospinning according to claim 2, wherein: the second connector comprises a conical interface, the conical interface is connected with a catheter, the other end of the catheter is connected with the third connector, the third connector is connected with the cortex needle cylinder through the fourth threaded connection structure, and the fourth connector is connected with or detached from the cortex needle cylinder.
6. The detachable coaxial needle device for melt electrospinning according to claim 5, wherein: the first joint, the second joint and the third joint are both luer metal joints.
7. The detachable coaxial needle device for melt electrospinning according to claim 3, wherein: the cortex pinhead passes through threaded connection structure five with cortex needle tubing connects, with the help of threaded connection structure five connects or dismantles both.
8. The detachable melt electrospinning coaxial needle device according to claim 1 or 2, wherein: and the first connector is sleeved with a high-voltage power supply retaining ring, and the high-voltage power supply retaining ring is connected with the high-voltage power supply module.
9. The detachable coaxial needle device for melt electrospinning according to claim 1, wherein: the core layer needle cylinder and the skin layer needle cylinder are both connected to a pneumatic module.
10. The detachable coaxial needle device for melt electrospinning according to claim 1, wherein: and the outer sides of the core layer needle cylinder and the skin layer needle cylinder are both provided with temperature control modules.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110615377.8A CN113512773A (en) | 2021-06-02 | 2021-06-02 | Quick detachable coaxial syringe needle device of fuse-element electrostatic spinning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110615377.8A CN113512773A (en) | 2021-06-02 | 2021-06-02 | Quick detachable coaxial syringe needle device of fuse-element electrostatic spinning |
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| Publication Number | Publication Date |
|---|---|
| CN113512773A true CN113512773A (en) | 2021-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110615377.8A Pending CN113512773A (en) | 2021-06-02 | 2021-06-02 | Quick detachable coaxial syringe needle device of fuse-element electrostatic spinning |
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| Country | Link |
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| CN (1) | CN113512773A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116356434A (en) * | 2023-02-02 | 2023-06-30 | 厦门净境新材料科技有限公司 | Electrostatic spinning composite spray head |
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Inventor after: Du Lei Inventor after: Nie Longping Inventor before: Du Lei Inventor before: Nie Longping Inventor before: Xu Huaizhong |
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Application publication date: 20211019 |