CN109943894B - Local temperature control electrostatic spinning system - Google Patents
Local temperature control electrostatic spinning system Download PDFInfo
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- CN109943894B CN109943894B CN201910182432.1A CN201910182432A CN109943894B CN 109943894 B CN109943894 B CN 109943894B CN 201910182432 A CN201910182432 A CN 201910182432A CN 109943894 B CN109943894 B CN 109943894B
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- 238000010041 electrostatic spinning Methods 0.000 title claims abstract description 24
- 238000009987 spinning Methods 0.000 claims abstract description 147
- 230000007246 mechanism Effects 0.000 claims abstract description 76
- 239000007788 liquid Substances 0.000 claims abstract description 60
- 238000010438 heat treatment Methods 0.000 claims description 36
- 239000007921 spray Substances 0.000 claims description 36
- 238000005057 refrigeration Methods 0.000 claims description 23
- 230000017525 heat dissipation Effects 0.000 claims description 22
- 239000004065 semiconductor Substances 0.000 claims description 17
- 238000001816 cooling Methods 0.000 claims description 6
- 238000001523 electrospinning Methods 0.000 claims 2
- 239000000835 fiber Substances 0.000 abstract description 33
- 239000002904 solvent Substances 0.000 description 34
- 239000002121 nanofiber Substances 0.000 description 14
- 230000006872 improvement Effects 0.000 description 12
- 239000000463 material Substances 0.000 description 8
- 230000001276 controlling effect Effects 0.000 description 6
- 239000012528 membrane Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005686 electrostatic field Effects 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 239000011343 solid material Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012681 fiber drawing Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013270 controlled release Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000009920 food preservation Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000017423 tissue regeneration Effects 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
Abstract
The invention discloses a local temperature control electrostatic spinning system which comprises a spinning cavity, a spinning device, a collecting device, a spinning temperature control device and a high-voltage electrostatic generator, wherein the spinning device, the collecting device and the spinning temperature control device are arranged in the spinning cavity, the spinning device is arranged at the top of the spinning cavity, and the collecting device is arranged below the spinning device; the spinning device comprises a nozzle driving mechanism, a liquid supply mechanism and a nozzle, wherein a plurality of needles and a spinning temperature control device are arranged on the nozzle, the spinning temperature control device is arranged on the periphery of the needles, and the high-voltage electrostatic generator is connected with the needles. The invention can respectively feed back and adjust the temperature of the needle head area and the spinning area in real time, so that the needle head area and the spinning area are at proper working temperature, thereby achieving the purposes of stably forming the fiber and improving the quality of the fiber film.
Description
Technical Field
The invention relates to the field of electrostatic spinning, in particular to a local temperature control electrostatic spinning system.
Background
Electrostatic spinning is a technical means for efficiently preparing nanofibers, and the prepared nanofibers are nanoscale and micron-sized and have extremely high specific surface area. The electrostatic spinning nanofiber membrane is widely applied to various fields such as air filtration, water filtration, food preservation, battery diaphragm, drug controlled release, tissue repair and the like by virtue of a unique pore structure.
In the electrostatic spinning process, the stretching and the thinning of the high molecular polymer are mainly performed, and a set of material supply device, a high-voltage electrostatic generator and a nanofiber receiving device are needed in the process. The polymer is extruded to the needle head through the feeding device, so that the material is stretched to form a Taylor cone under the action of a high-voltage electrostatic field, and then the electrostatic field in the space between the needle head and the collecting device further stretches and thins the stroke superfine fiber, and finally the superfine fiber is deposited on the collecting device. With the continuous spinning process, innumerable nanofibers are stacked and interwoven with each other to make the nanofiber membrane with a certain pore structure travel, and the efficiency and the pore controllability of the nanofiber membrane cannot be achieved by other technologies.
The electrostatic spinning technology comprises far field electrostatic spinning and near field electrostatic spinning, and most of the spinnable polymer materials are dissolved in specific organic solvents to form specific solutions for electrostatic spinning. Most organic solvents are volatile, which occurs after the solution has been brought into contact with air, and eventually the fibers deposited on the collection device have evaporated most of the solvent. The solvent volatilizes much more greatly influenced by the temperature of the spinning environment, and when the environment temperature is too high, the solvent volatilizes too fast, so that the solution remains solid material at the needle and is coagulated at the needle, and finally the needle is blocked, and the spinning has to be stopped.
The effect of delaying solvent volatilization can be achieved by controlling the temperature of the spinning environment, but the temperature of the spinning cavity is uniform, which brings about another problem. The fiber drawing process and the fiber after deposition need to volatilize a large amount of solvent, otherwise, the water content of the fiber film deposited on the collecting device is too high, or a large amount of beads appear on the fiber, especially when the spinning distance is short, the fiber cannot be fully volatilized and drawn in space, the volatilization degree of the solvent is insufficient, and the quality of the fiber film is seriously affected.
Therefore, the invention solves the contradiction that the solvent at the needle head volatilizes too fast and the solvent volatilizes too slowly in the spinning process, and the local temperature controllable device is arranged, so that the temperature of the spinning environment can be properly increased while the solvent volatilization rate at the needle head is slowed down, the solvent volatilization in the fiber is promoted, the aim of stabilizing and forming the fiber is finally achieved, and the quality of the fiber film is improved.
Disclosure of Invention
The invention aims to solve the technical problem of providing a local temperature control electrostatic spinning system which can respectively feed back and adjust the temperature of a needle head area and a spinning area in real time so as to ensure that the needle head area and the spinning area are at proper working temperatures, thereby achieving the purposes of stably forming fibers and improving the quality of fiber films.
In order to solve the technical problems, the invention provides a local temperature control electrostatic spinning system which comprises a spinning cavity, a spinning device, a collecting device, a spinning temperature control device and a high-voltage electrostatic generator, wherein the spinning device, the collecting device and the spinning temperature control device are arranged in the spinning cavity, the spinning device is arranged at the top of the spinning cavity, and the collecting device is arranged below the spinning device;
the spinning device comprises a nozzle driving mechanism, a liquid supply mechanism and a nozzle, wherein a plurality of needles and a spinning temperature control device are arranged on the nozzle, the spinning temperature control device is arranged on the periphery of the needles, and the high-voltage electrostatic generator is connected with the needles;
the spray head driving mechanism is used for driving the spray head to do reciprocating motion;
the liquid supply mechanism is used for conveying the spinning solution to the spray head;
the spinning temperature control device is used for feeding back and controlling the temperature of the needle head area in real time;
and the spinning temperature control device is used for feeding back and controlling the temperature of the spinning area in real time.
As the improvement of above-mentioned scheme, spout silk temperature regulating device includes refrigeration mechanism, locates a plurality of first temperature sensor and the controller in the refrigeration mechanism, refrigeration mechanism and first temperature sensor are connected with the controller respectively, refrigeration mechanism and first temperature sensor locate the periphery of syringe needle.
As an improvement of the scheme, the refrigeration mechanism is in a cuboid shape with upper and lower openings, and the needle head is inserted into the refrigeration mechanism;
the refrigerating mechanism comprises a refrigerating layer, a semiconductor layer and a radiating layer which are sequentially connected from inside to outside.
As an improvement of the scheme, the refrigerating mechanism comprises a refrigerating layer, a semiconductor layer, a heat dissipation layer and a heat dissipation fin which are sequentially connected from inside to outside.
As an improvement of the scheme, the length of the needle is equal to the height of the refrigerating mechanism.
As an improvement of the scheme, the spray head driving mechanism comprises a horizontal guide rail arranged at the top of the spinning cavity, a spray head bracket which is arranged on the horizontal guide rail and can slide along the horizontal guide rail, and a first motor for driving the spray head bracket;
the liquid supply mechanism is a liquid supply pump, the liquid supply pump comprises a liquid supply pump body and a liquid guide tube, the spray head and the liquid supply pump body are arranged on the spray head support, and the liquid supply pump body is communicated with the spray head through the liquid guide tube.
As the improvement of above-mentioned scheme, the shower nozzle includes spinneret, feed liquor head and needle file, be equipped with branch liquid flow path in the spinneret, the top of spinneret is located to the feed liquor head, the bottom of spinneret is located to the needle file, the feed liquor head is linked together with the needle file through branch liquid flow path, the needle is located on the needle file, the spinneret temperature regulating device is connected with the spinneret, the feed liquor mechanism is linked together with the feed liquor head.
As an improvement of the scheme, the spinning temperature control device comprises a plurality of heating mechanisms, a plurality of second temperature sensors and a controller, wherein the heating mechanisms and the second temperature sensors are arranged on the inner wall of the spinning cavity, and the heating mechanisms and the second temperature sensors are respectively connected with the controller.
As an improvement of the scheme, the heating mechanism is a heating lamp.
As the improvement of above-mentioned scheme, heating mechanism is including locating the perpendicular guide rail and the second motor of spinning chamber inner wall, the heating lamp is located on the perpendicular guide rail and can follow perpendicular guide rail and slide, the second motor is used for driving the heating lamp.
The implementation of the invention has the following beneficial effects:
according to the invention, the independent temperature control devices are respectively arranged in the needle head area and the spinning area, so that the local temperature can be controlled. The spinning temperature control device can feed back the temperature field of the needle head area in real time, realize refrigeration according to the temperature information fed back, avoid the solvent volatilization at the needle head position to be too fast due to the too high temperature, stop the needle head, and stop spinning.
The spinning temperature control device can realize feedback of the temperature fields of all areas in the spinning cavity, raise the temperature in the spinning area according to the feedback temperature information, further make the temperature fields of all areas in the spinning cavity more uniform, and make the solvent fully volatilize in the spinning process, so as to achieve the purposes of stable fiber formation and improvement of fiber film quality.
Drawings
FIG. 1 is a schematic diagram of a local temperature control electrostatic spinning system according to the present invention;
FIG. 2 is a perspective view of the sprinkler head of FIG. 1;
FIG. 3 is a front view of the sprinkler of FIG. 1;
FIG. 4 is a top view of the sprinkler of FIG. 1;
FIG. 5 is a bottom view of the sprinkler of FIG. 1;
FIG. 6 is a cross-sectional view taken along B-B of FIG. 4;
FIG. 7 is a cross-sectional view taken along line A-A of FIG. 3;
fig. 8 is an enlarged view at C in fig. 7.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present invention more apparent. It is only stated that the terms of orientation such as up, down, left, right, front, back, inner, outer, etc. used in this document or the imminent present invention, are used only with reference to the drawings of the present invention, and are not meant to be limiting in any way.
The invention solves the contradiction that the solvent at the needle head volatilizes too fast and the solvent volatilizes too slowly in the spinning process, and the local temperature controllable device is arranged, so that the spinning environment temperature can be properly increased while the solvent volatilization rate at the needle head is slowed down, the solvent volatilization in the fiber is promoted, the aim of stabilizing and forming the fiber is finally achieved, and the quality of the fiber film is improved.
Referring to fig. 1-5, the invention discloses a local temperature control electrostatic spinning system, which comprises a spinning cavity 1, a spinning device, a collecting device 2, a spinning temperature control device and a high-voltage electrostatic generator 3, wherein the spinning device, the collecting device 2 and the spinning temperature control device are arranged in the spinning cavity 1, the spinning device is arranged at the top of the spinning cavity 1, and the collecting device 2 is arranged below the spinning device.
The spinning device comprises a nozzle driving mechanism, a liquid supply mechanism and a nozzle 4, wherein a plurality of needles 41 and a spinning temperature control device are arranged on the nozzle 4, the spinning temperature control device is arranged on the periphery of the needles 41, and the high-voltage electrostatic generator 3 is connected with the needles 41 to generate a high-voltage electrostatic field.
And the spray head driving mechanism is used for driving the spray head 4 to reciprocate.
And a liquid supply mechanism for delivering the spinning solution to the nozzle 4.
And the spinning temperature control device is used for feeding back and controlling the temperature of the needle head area in real time.
And the spinning temperature control device is used for feeding back and controlling the temperature of the spinning area in real time.
Most organic solvents are volatile, which occurs after the solution has been brought into contact with air, and eventually the fibers deposited on the collection device have evaporated most of the solvent. The solvent volatilizes much more greatly influenced by the temperature of the spinning environment, and when the environment temperature is too high, the solvent volatilizes too fast, so that the solution becomes solid material at the needle and is coagulated at the needle, and finally the needle is blocked, and the spinning has to be stopped. The effect of delaying solvent volatilization can be achieved by controlling the temperature of the spinning environment, but the temperature of the spinning cavity is uniform, which brings about another problem. The fiber drawing process and the fiber after deposition need to volatilize a large amount of solvent, otherwise, the water content of the fiber film deposited on the collecting device is too high, or a large amount of beads appear on the fiber, especially when the spinning distance is short, the fiber cannot be fully volatilized and drawn in space, the volatilization degree of the solvent is insufficient, and the quality of the fiber film is seriously affected.
According to the invention, the independent temperature control devices are respectively arranged in the needle head area and the spinning area, so that the local temperature can be controlled. The spinning temperature control device can feed back the temperature field of the needle head area in real time, realize refrigeration according to the temperature information fed back, avoid the solvent volatilization at the needle head position to be too fast due to the too high temperature, stop the needle head, and stop spinning. The spinning temperature control device can realize feedback of the temperature fields of all areas in the spinning cavity, raise the temperature in the spinning area according to the feedback temperature information, further make the temperature fields of all areas in the spinning cavity more uniform, and make the solvent fully volatilize in the spinning process, so as to achieve the purposes of stable fiber formation and improvement of fiber film quality.
The set of temperatures at various points in the material system is referred to as a temperature field. The needle area is the vicinity of the pointer head. The spinning zone refers to the region in the spinning chamber where spinning is performed. The temperature in the needle zone is generally controlled to be optimum at 15-30 c, whereas the temperature in the spinning zone is relatively high for different solvent volatilities, and is generally optimum at 40 c.
Preferably, the needle 41 is made of stainless steel material.
As shown in fig. 1, the nozzle driving mechanism includes a horizontal guide rail 61 provided at the top of the spinning chamber 1, a nozzle holder 62 provided on the horizontal guide rail 61 and slidable along the horizontal guide rail 61, and a first motor (not shown) driving the nozzle holder 62. The first motor is arranged in the spinning cavity 1.
Preferably, the liquid supply mechanism is a liquid supply pump, the liquid supply pump comprises a liquid supply pump body 71 and a liquid guide tube 72, the spray head 4 and the liquid supply pump body 71 are arranged on the spray head bracket 62, and the liquid supply pump body 71 is communicated with the spray head 4 through the liquid guide tube 72.
The spray head and the spray head support do horizontal reciprocating motion on the horizontal guide rail under the drive of the first motor. The spray head continuously sprays filaments, and innumerable nanofibers are mutually overlapped and interweaved in the continuous horizontal reciprocating motion of the spray head to form the nanofiber membrane. The spray head and the liquid supply pump body are both arranged on the spray head bracket and synchronously move. The liquid supply pump continuously supplies spinning solution to the spray head, so that smooth spinning is ensured.
As shown in fig. 2-6, the spray head 4 includes a spinneret 43, a liquid inlet head 42 and a needle seat 45, a liquid distribution flow channel 44 is arranged in the spinneret 43, the liquid inlet head 42 is arranged at the top of the spinneret 43, the needle seat 45 is arranged at the bottom of the spinneret 43, the liquid inlet head 42 is communicated with the needle seat 45 through the liquid distribution flow channel 44, the needle head 41 is arranged on the needle seat 45, the spray temperature control device is connected with the spinneret 43, and the liquid supply mechanism is communicated with the liquid inlet head 42. Specifically, the liquid supply pump body 71 is in communication with the liquid inlet head 42 via a liquid guide tube 72. The spinning solution flows into the liquid inlet head in the liquid supply pump body through the liquid guide pipe and is shunted to the needle heads on the needle bases through the liquid separation flow passages. Finally, the spinning solution is extruded from the needle head, and the high-voltage electrostatic generator is started to start spinning. The needle seat and the needle head are arranged in one-to-one correspondence. Preferably, the number of needle holders is 4, and the number of needles is 4.
As shown in fig. 1 and 5-7, the spinning temperature control device comprises a refrigeration mechanism 8, a plurality of first temperature sensors 9 and a controller 5, wherein the first temperature sensors 9 and the controller 5 are arranged in the refrigeration mechanism 8, the refrigeration mechanism 8 and the first temperature sensors 9 are respectively connected with the controller 5, and the refrigeration mechanism 8 and the first temperature sensors 9 are arranged on the periphery of the needle 41.
Specifically, the refrigerating mechanism is connected with the spinneret plate, so that the refrigerating mechanism hangs and wraps the side face of the needle. The first temperature sensor can sense the temperature of the needle head area, convert the temperature into an available output temperature signal, and transmit the temperature signal to the controller, and the controller dynamically adjusts the power of the refrigerating mechanism according to the set refrigerating temperature of the spray head and the real-time temperature fed back by the first temperature sensor so as to keep the constant temperature of the needle head.
As shown in fig. 5 to 8, the refrigeration mechanism 8 is in a rectangular parallelepiped shape with upper and lower openings, and the needle 41 is inserted into the refrigeration mechanism 8. The refrigerating mechanism 8 comprises a refrigerating layer 81, a semiconductor layer 82 and a heat dissipation layer 83 which are sequentially connected from inside to outside. The refrigeration mechanism can realize heat transfer and transfer the heat in the needle head area outwards, thereby realizing refrigeration of the needle head. The semiconductor layer is a thermocouple pair formed by combining an N-type semiconductor material and a P-type semiconductor material, and when direct current passes through the semiconductor layer, heat transfer is generated between the refrigerating layer and the radiating layer at two sides of the semiconductor layer. The refrigerating layer near the pinhead area absorbs the heat at the pinhead area, so that the temperature of the pinhead area is reduced, the heat is transferred to the radiating layer at the other end of the semiconductor layer, and the radiating layer radiates the heat outside the pinhead area, thereby realizing the purpose of refrigerating the pinhead.
Preferably, the refrigerating mechanism 8 includes a refrigerating layer 81, a semiconductor layer 82, a heat dissipation layer 83 and a heat dissipation fin 84, which are sequentially connected from inside to outside. Further, the outer side of the heat sink 83 is also connected to a heat sink 84, which accelerates the reduction of the temperature of the heat sink, accelerates the rate of heat transfer, and further reduces the temperature of the needle area, resulting in a lower temperature of the needle area. The heat sink 84 is made of copper or an aluminum alloy. More preferably, the heat sink 84 is made of an aluminum alloy.
The refrigerating mechanism 8 is provided with a cavity for accommodating the refrigerating layer 81, the semiconductor layer 82 and the heat dissipation layer 83, and as shown in fig. 3, the refrigerating layer 81 is disposed on the inner side, and the heat dissipation layer 83 is disposed on the outer side. The bottom of the cavity is provided with an opening, the refrigerating layer, the semiconductor layer and the heat dissipation layer are arranged in the cavity through the opening, and the opening is covered by a cover plate, so that the refrigerating layer, the semiconductor layer and the heat dissipation layer are fixedly arranged in the refrigerating mechanism. The heat in the needle head area is transferred to the refrigerating layer through the inner side wall of the refrigerating mechanism, is transferred to the heat dissipation layer through the semiconductor layer, and is dissipated by the heat dissipation layer. The heat dissipation layer is further connected with the heat dissipation sheet, and the heat dissipation sheet can accelerate the heat dissipation of the heat dissipation layer, so that the heat dissipation layer is easier to dissipate heat.
Preferably, the length of the needle 41 is equal to the height of the refrigerating mechanism 8, so that the refrigerating mechanism completely wraps the side surface of the needle, and the refrigerating effect is ensured.
As shown in fig. 1, the spinning temperature control device comprises a plurality of heating mechanisms, a plurality of second temperature sensors 10 and a controller 5, wherein the heating mechanisms and the second temperature sensors 10 are arranged on the inner wall of the spinning cavity 1, and the heating mechanisms and the second temperature sensors 10 are respectively connected with the controller 5.
Preferably, the heating mechanism is a heating lamp 11.
The second temperature sensors 10 are uniformly arranged on the four inner side walls of the spinning cavity 1, the temperature fields of all areas inside the spinning cavity can be fed back, and the controller automatically adjusts the power of the heating lamp according to the real-time temperature fed back by the second temperature sensors distributed in the spinning cavity, so that the temperature of the spinning area is increased, and the solvent is fully volatilized.
In order to ensure the uniformity of the temperature field in the spinning area, the heating mechanism comprises a vertical guide rail 12 arranged on the inner wall of the spinning cavity 1 and a second motor 13, the heating lamp 11 is arranged on the vertical guide rail 12 and can slide along the vertical guide rail 12, and the second motor 13 is used for driving the heating lamp 11. The second motor 12 is preferably a screw motor and is arranged in the spinning chamber 1. The second motor 13 is turned on to move the heating lamp 11 up and down along the vertical guide rail 12, and the position of the heating lamp is controlled, so that the temperature field of the spinning area is more uniform.
Preferably, the heating mechanism is three, i.e. three heating lamps 11 are respectively mounted on three vertical guide rails 12, as shown in fig. 1.
Preferably, the collecting device 2 is a conveyor belt, a roller or a two-dimensional motion platform.
More preferably, the collecting device 2 is a conveyor belt.
The working principle of the local temperature control electrostatic spinning system of the invention is as follows: before the electrostatic spinning operation, the volatility, fluidity and spinning process parameters of the solvent of the spinning material are investigated, and the cooling temperature of the nozzle 4 and the heating temperature of the heating lamp 11 of the spinning chamber 1 are set. A certain spinning solution is taken and filled in a liquid supply pump, the liquid supply pump is started, the solution is conveyed to a spray head 4 and fills an inner partial liquid flow channel 44, and when the spinning solution is extruded out of a needle 41, the high-voltage electrostatic generator 3 is started, and spinning starts. The heating lamp 11 is started, and the power of the heating lamp 11 is automatically adjusted according to the real-time temperature fed back by the second temperature sensor 10 distributed in the spinning cavity 1. In order to ensure the uniformity of the temperature field in the spinning area, the lead screw motor of the heating lamp 11 can be started, and the positions of the heating lamp 11 in the vertical direction can be controlled respectively, so that the temperature field in the spinning area is more uniform. The nanofibers are mutually overlapped and interwoven in a spinning area and deposited on a collecting device to finally form a nanofiber membrane. As the solvent is volatilized continuously in the interlacing strokes of the nanofibers, the quality of the fiber film is ultimately affected by the different volatilities of the solvent in the different strokes. The temperature fields of all the areas in the spinning area are fed back in real time through the second temperature sensor, the lead screw motor is driven by the controller, the lead screw motor can respectively control the positions of the respective heating lamps in the vertical direction, namely the positions of the heating lamps in different areas in the vertical direction, so that the volatilization degree of the solvent of the nanofiber in different spinning strokes of the nanofiber is better controlled, and the purposes of stable fiber forming and improvement of the quality of the fiber film are achieved. The first motor of the spray head 4 is started, the stroke and the speed are set, and the spray head 4 is driven to reciprocate. When observing that liquid drops are extruded near the needle 4, the spinning temperature control device of the spray head is started, the temperature is set, the temperature field near the needle 4 is different from the temperature field of an external spinning area, the solvent in the solution is prevented from volatilizing too fast, dynamic power adjustment is performed according to the real-time temperature fed back by the first temperature sensor 9 installed inside the refrigerating mechanism 8, and the constant temperature of the needle 41 is maintained. During operation of the cooling mechanism 8, the direct current passes through the semiconductor layer 82, the cooling layer 81 absorbs heat to reduce the temperature of air in the vicinity of the needle 4, i.e. to reduce the temperature in the region of the needle, the heat is transferred from the cooling layer 81 to the heat dissipation layer 83, and the heat dissipation layer 83 dissipates heat and rejects heat to the outside through the heat dissipation fins 84. With the continuous spinning process, the collecting device 2 is started, and the collecting base material is driven at a constant speed, so that the fiber deposition is more uniform.
The invention sets a dynamic temperature control device in the face of the influence of the temperature field on the solvent volatilization in the spinning process, and comprises a spinning temperature control device of a nozzle and a spinning temperature control device of a spinning cavity. Firstly, slow down the excessive volatilization of solvent in syringe needle department, prevent to a certain extent that the problem that the solid material blockked up the syringe needle appears. And secondly, the solvent volatilization rate of the spinning area is promoted, so that the fiber formation deposited on the collecting device is more stable and controllable, and the product quality is improved.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the invention, such changes and modifications are also intended to be within the scope of the invention.
Claims (8)
1. The local temperature control electrostatic spinning system is characterized by comprising a spinning cavity, a spinning device, a collecting device, a spinning temperature control device and a high-voltage electrostatic generator, wherein the spinning device, the collecting device and the spinning temperature control device are arranged in the spinning cavity, the spinning device is arranged at the top of the spinning cavity, and the collecting device is arranged below the spinning device;
the spinning device comprises a nozzle driving mechanism, a liquid supply mechanism and a nozzle, wherein a plurality of needles and a spinning temperature control device are arranged on the nozzle, the spinning temperature control device is arranged on the periphery of the needles, and the high-voltage electrostatic generator is connected with the needles;
the spinning temperature control device comprises a refrigeration mechanism, a plurality of first temperature sensors and a controller, wherein the first temperature sensors are arranged in the refrigeration mechanism, the refrigeration mechanism and the first temperature sensors are respectively connected with the controller, and the refrigeration mechanism and the first temperature sensors are arranged on the periphery of the needle head;
the spinning temperature control device comprises a plurality of heating mechanisms, a plurality of second temperature sensors and a controller, wherein the heating mechanisms and the second temperature sensors are arranged on the inner wall of the spinning cavity, and the heating mechanisms and the second temperature sensors are respectively connected with the controller;
the spray head driving mechanism is used for driving the spray head to do reciprocating motion;
the liquid supply mechanism is used for conveying the spinning solution to the spray head;
the spinning temperature control device is used for feeding back and controlling the temperature of the needle head area in real time;
and the spinning temperature control device is used for feeding back and controlling the temperature of the spinning area in real time.
2. The local temperature-control electrostatic spinning system of claim 1, wherein the refrigeration mechanism is in the shape of a cuboid with upper and lower openings, and the needle head is inserted into the refrigeration mechanism;
the refrigerating mechanism comprises a refrigerating layer, a semiconductor layer and a radiating layer which are sequentially connected from inside to outside.
3. The local temperature-controlled electrostatic spinning system of claim 1, wherein the cooling mechanism comprises a cooling layer, a semiconductor layer, a heat dissipation layer and a heat dissipation fin connected in sequence from inside to outside.
4. A local temperature controlled electrospinning system as in any of claims 2-3, wherein the length of the needle is equal to the height of the refrigeration mechanism.
5. The local temperature-controlled electrostatic spinning system of claim 1, wherein the nozzle driving mechanism comprises a horizontal guide rail arranged at the top of the spinning chamber, a nozzle bracket arranged on the horizontal guide rail and capable of sliding along the horizontal guide rail, and a first motor for driving the nozzle bracket;
the liquid supply mechanism is a liquid supply pump, the liquid supply pump comprises a liquid supply pump body and a liquid guide tube, the spray head and the liquid supply pump body are arranged on the spray head support, and the liquid supply pump body is communicated with the spray head through the liquid guide tube.
6. The local temperature-control electrostatic spinning system of claim 1, wherein the spray head comprises a spinneret plate, a liquid inlet head and a needle seat, a liquid distribution channel is arranged in the spinneret plate, the liquid inlet head is arranged at the top of the spinneret plate, the needle seat is arranged at the bottom of the spinneret plate, the liquid inlet head is communicated with the needle seat through the liquid distribution channel, the needle head is arranged on the needle seat, the spinning temperature-control device is connected with the spinneret plate, and the liquid supply mechanism is communicated with the liquid inlet head.
7. The locally controlled temperature electrospinning system of claim 1, wherein the heating mechanism is a heating lamp.
8. The local temperature-controlled electrostatic spinning system of claim 7, wherein the heating mechanism comprises a vertical guide rail provided on an inner wall of the spinning chamber and a second motor provided on the vertical guide rail and slidable along the vertical guide rail, and the second motor is configured to drive the heating lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910182432.1A CN109943894B (en) | 2019-03-12 | 2019-03-12 | Local temperature control electrostatic spinning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910182432.1A CN109943894B (en) | 2019-03-12 | 2019-03-12 | Local temperature control electrostatic spinning system |
Publications (2)
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003087443A1 (en) * | 2002-04-11 | 2003-10-23 | Secant Medical, Inc. | Covering process using electrospinning of very small fibers |
| KR100712592B1 (en) * | 2006-04-27 | 2007-05-02 | 박원호 | Apparatus for electrospinning from polymer melts |
| JP2008174881A (en) * | 2007-01-22 | 2008-07-31 | Toyota Boshoku Corp | Electrospinning apparatus and electrospinning method |
| CN108823652A (en) * | 2018-07-16 | 2018-11-16 | 绍兴百慧科技有限公司 | A kind of melt electrostatic spinning device |
| CN109371479A (en) * | 2018-12-21 | 2019-02-22 | 青岛科技大学 | A kind of solution melt cospinning multi-nozzle electrospinning integrating device |
| CN210085635U (en) * | 2019-03-12 | 2020-02-18 | 佛山轻子精密测控技术有限公司 | Local temperature control electrostatic spinning system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7326043B2 (en) * | 2004-06-29 | 2008-02-05 | Cornell Research Foundation, Inc. | Apparatus and method for elevated temperature electrospinning |
-
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- 2019-03-12 CN CN201910182432.1A patent/CN109943894B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003087443A1 (en) * | 2002-04-11 | 2003-10-23 | Secant Medical, Inc. | Covering process using electrospinning of very small fibers |
| KR100712592B1 (en) * | 2006-04-27 | 2007-05-02 | 박원호 | Apparatus for electrospinning from polymer melts |
| JP2008174881A (en) * | 2007-01-22 | 2008-07-31 | Toyota Boshoku Corp | Electrospinning apparatus and electrospinning method |
| CN108823652A (en) * | 2018-07-16 | 2018-11-16 | 绍兴百慧科技有限公司 | A kind of melt electrostatic spinning device |
| CN109371479A (en) * | 2018-12-21 | 2019-02-22 | 青岛科技大学 | A kind of solution melt cospinning multi-nozzle electrospinning integrating device |
| CN210085635U (en) * | 2019-03-12 | 2020-02-18 | 佛山轻子精密测控技术有限公司 | Local temperature control electrostatic spinning system |
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