CN114197062A - Melt differential electrostatic spinning pre-oriented filament continuous preparation device - Google Patents
Melt differential electrostatic spinning pre-oriented filament continuous preparation device Download PDFInfo
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- CN114197062A CN114197062A CN202210020417.9A CN202210020417A CN114197062A CN 114197062 A CN114197062 A CN 114197062A CN 202210020417 A CN202210020417 A CN 202210020417A CN 114197062 A CN114197062 A CN 114197062A
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- 238000010041 electrostatic spinning Methods 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 239000000835 fiber Substances 0.000 claims abstract description 73
- 239000008041 oiling agent Substances 0.000 claims abstract description 13
- 238000009987 spinning Methods 0.000 claims abstract description 11
- 238000003860 storage Methods 0.000 claims abstract description 8
- 238000000926 separation method Methods 0.000 claims description 11
- 238000003825 pressing Methods 0.000 claims description 7
- 230000003068 static effect Effects 0.000 claims description 4
- 230000001154 acute effect Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 2
- 239000000155 melt Substances 0.000 abstract description 19
- 239000002121 nanofiber Substances 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 4
- 230000005684 electric field Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 239000003595 mist Substances 0.000 description 4
- 238000005086 pumping Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000001523 electrospinning Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- JVTAAEKCZFNVCJ-REOHCLBHSA-N L-lactic acid Chemical compound C[C@H](O)C(O)=O JVTAAEKCZFNVCJ-REOHCLBHSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 229940116871 l-lactate Drugs 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002074 melt spinning Methods 0.000 description 1
- 239000002114 nanocomposite Substances 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
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Classifications
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
-
- 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
- D01D5/0015—Electro-spinning characterised by the initial state of the material
- D01D5/0023—Electro-spinning characterised by the initial state of the material the material being a polymer melt
Abstract
The invention discloses a melt differential electrostatic spinning pre-oriented filament continuous preparation device, which comprises a spinning system, a fiber guide system, a bundling system, an oiling system and a collecting roller, wherein the fiber guide system comprises an air compressor, a plasma generator, a first-stage suction air pipe, a bracket, a second-stage suction air pipe and a second-stage suction air pipe fixing device, the bundling system comprises a horn-shaped air suction ring, a third-stage suction air pipe, a fourth-stage suction air pipe and a plastic pipe, the oiling system comprises an oil nozzle, an oil pump, an oil storage tank and an oil pump motor, the invention utilizes a plurality of multilayer nozzles to increase the number of fibers in a filament so as to improve the breaking force of the filament, utilizes multistage airflow to guide the fibers and bundle the fibers, utilizes plasma to eliminate residual charges of the fibers, weakens charge repulsion among the fibers, utilizes an oiling device to enable the fibers to adsorb an oiling agent, further increases the bundling effect, the fiber bundle orientation is improved by utilizing the high-speed rotating roller, so that the micro-nano fiber filament with good orientation and high strength is prepared in batch.
Description
Technical Field
The invention relates to a melt differential electrostatic spinning pre-oriented filament continuous preparation device, belonging to the field of electrostatic spinning
Background
Electrostatic spinning is to utilize the tip effect under a high-voltage electric field to charge or polarize a fluid, and further overcome surface tension and viscous resistance under the action of an electric field force to form superfine fibers.
The superfine fiber prepared by electrostatic spinning has the advantages of large specific surface area, high porosity and the like, so that the superfine fiber can show unique physical and chemical properties. However, the non-woven fabric with randomly oriented fibers is generally obtained by electrostatic spinning, and has poor mechanical properties, so that the further application of the electrostatic spinning technology is greatly limited, and the application is particularly limited in the aspects of tissue engineering, energy sources, intelligent wearing and the like which need anisotropic complex structures.
The nanofiber filaments prepared by the electrostatic spinning technology solve the problem of poor mechanical properties of electrostatic spinning products, and the application field of the electrostatic spinning technology can be expanded by combining the nanofiber technology with the traditional textile technology. Current research into electrospun oriented filaments can be summarized as:
electric field self-bundling: the principle is that electrostatic induction occurs on a grounding needle point under a high-voltage electric field, a large amount of charges are gathered on the needle point, and fibers are attracted into a bundle by the needle point and then collected by a roller. Such as [ WANG X, ZHANG K, ZHU M, et al, enhanced Mechanical Performance of Self-Bundled Electron Fiber Yarns dust-Treatments [ J ]. Macromolecular Rapid Communications,2008,29(10):826-31 ]. This method has a low yield and is only suitable for spinning solutions with high conductivity.
Water bath bundling: the principle is that the fibers are integrated into a bundle by using the surface tension of water and then collected by a roller. Such as the value of [ SMIT E,
U,SANDERSON R D.Continuous yarns from electrospun fibers[J].Polymer,2005,46(8):2419-23.]depositing the fibers prepared by electrostatic spinning into water, fishing out the fibers by using a plastic rod, changing the scattered fibers into a bundle under the surface tension of the water, and then collecting the bundle by using a roller. This method is only applicable to polymers that are insoluble in water and is intended to turn the web into tows in which the fibers are not oriented.
Conjugate electrospinning bundling: the principle is to integrate fibers into a bundle by utilizing the characteristic that fibers with opposite charges attract each other. Such as LI X, YAO C, SUN F, et al, conjugate electrolytic ionization of connecting nanoparticles of poly (L-lactate)/nano ternary phosphate nanocomposite [ J ], Journal of Applied Polymer Science,2008,107(6):3756-64 ] connecting nozzles of opposite electrodes to spray the nanofibers toward the center, and the fibers are entangled into a bundle under the action of the coulomb force and then collected by a roller. This process produces low yields of tow and fibers that are not oriented.
The method for preparing the filaments by the solution electrostatic spinning has low efficiency, low yield, unsuitability for industrialized production, low fiber orientation degree and poor mechanical property. Compared with solution electrostatic spinning, melt electrostatic spinning has the advantages of being green, free of solvent, high in raw material utilization rate, capable of spinning polymers such as PP, PE and PPS, wherein solvents are difficult to find, and the like. The technology introduces methods of cyclone beam concentration, plasma static elimination, oil solution beam concentration and the like to prepare the oriented filament of the nanofiber on the basis of melt differential electrostatic spinning.
The melt-oriented filaments can also be prepared by melt spinning, such as chinese patent CN101838859A, by extruding the melt from a spinneret to prepare fibers, solidifying the fibers through a cooling channel, and forming filaments through a filament collector. However, the diameter of the fiber prepared by the method is large, and the filament consisting of the nano-fiber cannot be prepared.
Disclosure of Invention
The invention designs a melt differential electrostatic spinning pre-oriented filament continuous preparation device, which can realize the industrial preparation of highly oriented nanofiber filaments, and the filaments have high breaking strength and knittability.
The technical scheme of the invention is as follows: a melt differential electrostatic spinning pre-oriented filament continuous preparation device comprises a spinning system, a fiber guiding system, a bundling system, an oiling system and collecting rollers, wherein the spinning system, the fiber guiding system, the bundling system, the oiling system and the collecting rollers are arranged from top to bottom in sequence and are all fixed by a support. The spinning system consists of a plunger type extruder, a plurality of layers of differential nozzles, an electrode plate and a high-voltage static electricity generating device, wherein the plurality of layers of differential nozzles are connected below the plunger type extruder; the fiber guide system is composed of an air compressor, a plasma generator, a first-stage suction air pipe, a support, a second-stage suction air pipe and a second-stage suction air pipe fixing device, wherein the upper end face of the first-stage suction air pipe is connected with a plate electrode and is coaxially arranged, the first-stage suction air pipe is clamped on the support, and the second-stage suction air pipe is arranged below the first-stage suction air pipe and is fixed by the second-stage suction air pipe fixing device. One part of compressed air generated by the air compressor directly flows into the first-stage suction air pipe through the air pipe, and the other part of the compressed air forms plasma under the high-pressure ionization action of the plasma generator and flows into the second-stage suction air pipe; the bundling system is composed of a horn-shaped air suction ring, a third-stage air suction pipe, a fourth-stage air suction pipe and a plastic pipe, wherein the two air suction pipes are adhered by the plastic pipe, the third-stage air suction pipe is in threaded connection with the horn-shaped air suction ring, and reinforced whirlwind formed by the two connected air suction pipes bundles fibers. The oiling system comprises glib talker, oil pump, oil storage pool and oil pump motor, and the oil pump is driven by oil pump motor, impresses the oil in the oil storage pool into the glib talker through leading oil pipe and forms the spraying.
The invention relates to a using method of a melt differential electrostatic spinning pre-oriented filament continuous preparation device. The electrode plate is connected with a high-voltage electrostatic generator, is endowed with high voltage of dozens of kilovolts, and the multilayer differential sprayer is grounded. Under the action of high-voltage electric field, each multi-layer differential nozzle can generate hundreds of fibres. And starting the air compressor to introduce compressed air into each suction air pipe, and opening the plasma static electricity generating device to convert the compressed air entering the second-stage suction air pipe into plasma. The superfine fibers are drawn to the trumpet-shaped air suction ring by air flows generated by all stages of air suction pipes of the fiber guide system. The reinforcing whirlwind that two continuous suction air pipes produced below the horn-shaped air suction ring sucks the fiber into to gather bundle, and the fiber bundle is drawn by the suction gun and passes through the oil nozzle and is collected by the roller. The oil pump and motor are started to convey oil from the oil reservoir to the nozzle, and oil mist is formed under pressure to make the fiber adsorb the oil mist. The collecting roller is started, and the collected fiber bundle is stretched, oriented and collected by the high-speed roller.
Each stage of suction air pipe of the melt differential electrostatic spinning pre-oriented filament continuous preparation device consists of a suction air pipe upper end shell, a suction air pipe lower end shell and a suction air pipe inner pipe, wherein the upper end shell, the suction air pipe lower end shell and the suction air pipe inner pipe are screwed and fixed by virtue of screws, the upper end shell and the suction air pipe lower end shell form a shell, and a section of closed cavity is formed between the shell and the suction air pipe inner pipe. There are a plurality of little through-holes around inner tube inner wall processing on the suction tuber pipe inner tube, the external diameter of little through-hole is tangent with the internal diameter of suction tuber pipe inner tube, the axis slope of little through-hole is downward, become the acute angle with the horizontal plane, compressed gas that the air compressor machine produced gets into suction tuber pipe upper end shell, behind the clearance cavity of suction tuber pipe lower extreme shell and suction tuber pipe, through-hole along on the suction tuber pipe inner wall forms stranded tangential air current, the center of whirlwind produces the negative pressure, thereby attract the fibre to get into the suction tuber pipe, and see the fibre out.
The second-stage suction air pipe fixing device of the melt differential electrostatic spinning pre-oriented filament continuous preparation device comprises a second-stage suction air pipe support, a sleeve ring, a pressing plate, a screw and a locking nut, wherein the sleeve ring is clamped at an air suction opening of the second-stage suction air pipe and is in interference fit with the second-stage suction air pipe, two ends of the sleeve ring are provided with extended shafts which can rotate in grooves of the second-stage suction air pipe support, a plurality of small holes are uniformly distributed on one side of each shaft along the axial direction, a circumferential angle difference exists among the small holes, when the sleeve ring is rotated to be vertically upwards, the pressing plate and the sleeve ring are connected through the screw, the rotating angle of the sleeve ring is fixed, the rotating angle of the second-stage suction air pipe is further fixed, the rotating angle of the second-stage suction air pipe is 0-45 degrees, the locking nut is screwed, and the sleeve ring is fixed.
The plastic pipe of the bundling system of the melt differential electrostatic spinning pre-oriented filament continuous preparation device provided by the invention is made of a material with high strength, small roughness of the inner surface and good wear resistance, so that fibers can pass through the plastic pipe smoothly, the length of the plastic pipe is 3-15cm, and the effect of mutually enhancing the whirlwind of two suction air pipes is ensured.
The plasma is introduced into the secondary suction air pipe of the melt differential electrostatic spinning pre-oriented filament continuous preparation device, and the plasma can neutralize the charges on the fibers, reduce the mutual repulsion between the fibers and be beneficial to bundling the fibers.
The invention relates to a melt differential electrostatic spinning pre-oriented filament continuous preparation device. The oil nozzle main body, the oil nozzle separation net and the oil nozzle front cover are adhered by glue. The diameter of an oiling agent inlet in the oil nozzle main body is of a funnel-shaped structure with gradually reduced diameter, the pressure of oiling agent at the inlet is rapidly increased, in addition, an interception net, namely an oil nozzle separation net, is arranged at an oiling agent outlet, and the mesh size is hundreds of microns. The oil can be broken into small droplets. The oil agent in the form of droplets can be sufficiently contacted with the fibers in the filaments, and the bundling property of the oil agent is effectively utilized. The oil nozzle front cover is used for protecting the oil nozzle separation net from being stuck and blocked by fibers. The bundling property of the filaments is further enhanced through the bundling action of the oiling agent, and the mechanical property of the filaments is improved.
The roller of the melt differential electrostatic spinning pre-oriented filament continuous preparation device is a high-speed rotating roller, the linear speed of the roller is greater than the wind speed of a bundling system, and the orientation of fibers in the filaments can be greatly improved under the drawing action of the high-speed roller.
According to the melt differential electrostatic spinning pre-oriented filament continuous preparation device, the number of fibers in the filament is increased by using the multiple multilayer nozzles, the breaking force of the filament is improved, the fibers are guided and bundled by using the multistage airflow, the residual charges of the fibers are eliminated by using the plasma, the charge repulsion among the fibers is weakened, the bundling of the fibers is enhanced, the fibers adsorb oil by using the oiling device, the bundling effect is further improved, the fiber bundle orientation is improved by using the high-speed rotating roller, and therefore the micro-nano fiber filament with good orientation and high strength is prepared in batches.
Drawings
FIG. 1 is a schematic view of a melt differential electrospinning pre-oriented filament continuous production apparatus of the present invention.
Fig. 2 is a schematic view of the suction duct structure of the apparatus shown in fig. 1.
Fig. 3 is a schematic view of a secondary suction air duct mounting arrangement of the apparatus of fig. 1.
Fig. 4 is a schematic diagram of the collar structure of the device shown in fig. 3.
Fig. 5 is a schematic view of a nozzle tip of the apparatus of fig. 1.
FIG. 6 is a schematic drawing of tow pulled by a suction gun.
In the figure: 1-ram extruder; 2-multilayer differential nozzle; 3, electrode plates; 4-first stage suction air pipe; 4-1-pumping the inner pipe of the air pipe; 4-2-pumping the upper end shell of the air pipe; 4-3-small through holes; 4-pumping the lower end shell of the air duct; 5, a second-stage suction air pipe fixing device; 5-1, a second-stage suction air pipe bracket; 5-2, pressing a plate; 5-3 screws; 5-4 lantern rings; 5-5, screwing down the screw; 5-6-fixed angle holes; 6-a second-stage suction air pipe; 7-horn-shaped air suction ring; 8-a third-stage suction air pipe; 9-plastic pipe; 10-a fourth stage suction air duct; 11-oil nozzle; 11-1-oil nozzle main body, 11-2-oil nozzle separation net and 11-3-oil nozzle front cover; 12-a nozzle holder; 13-a roller; 14-a device holder; 15-high voltage electrostatic generator; 16-a plasma generator; 17-an oil storage pool; 18-an oil pump; 19-oil pump motor; 20, an air compressor; 21-suction gun.
Detailed Description
The invention provides a melt differential electrostatic spinning pre-oriented filament continuous preparation device, which consists of a spinning system, a fiber guide system, a bundling system, an oiling system and collecting rollers, which are arranged from top to bottom in sequence and fixed by a device bracket 14. As shown in figure 1, the spinning system comprises a plunger type extruder 1, a multi-layer differential nozzle 2, an electrode plate 3 and a high-voltage electrostatic generator 15, wherein the multi-layer differential nozzle 2 is connected below the plunger type extruder 1, the electrode plate 3 is arranged below the multi-layer differential nozzle 2 and is connected with the high-voltage electrostatic generator 15, the multi-layer differential nozzle 2 is grounded and forms a high-voltage electric field with the electrode plate 3, melt extruded from the plunger type extruder 1 spreads into a film at each layer of conical surface of the multi-layer differential nozzle 2, and hundreds of fibers are formed under the action of the electric field force; the fiber guiding system is composed of an air compressor 20, a plasma generator 16, a first-stage suction air pipe 4, a second-stage suction air pipe 6 and a second-stage suction air pipe fixing device 5, the upper end face of the first-stage suction air pipe 4 is connected with the electrode plate 3 and is coaxially arranged, the second-stage suction air pipe 4 is arranged below the first-stage suction air pipe and is fixed by the second-stage suction air pipe fixing device 5. One part of the compressed air generated by the air compressor 20 directly flows into the first-stage suction air pipe 4, and the other part of the compressed air forms plasma under the high-pressure ionization action of the plasma generator 16 and flows into the second-stage suction air pipe 6; the cluster system is induced drafted ring 7, tertiary suction tuber pipe 8, fourth stage suction tuber pipe 10 and plastic tubing 9 by the loudspeaker form and is constituteed, is induced drafted the ring 7 by the plastic tubing 9 adhesion between two suction tuber pipes 4, and the loudspeaker form is induced drafted to 8 up end connections in tertiary suction tuber pipe, and tertiary suction tuber pipe 8, fourth stage suction tuber pipe 10 and plastic tubing 9 have formed the whirlwind of strengthening and can be tied a bundle the fibre. The oiling system is composed of an oil nozzle 11, an oil nozzle support 12, an oil pump 18, an oil storage pool 17 and an oil pump motor 19, wherein the oil pump 18 is driven by the oil pump motor 19, the oil nozzle 11 is fixed by the oil nozzle support 12 at a position for oiling bundled fibers, and the oil pump 18 enables oil in the oil storage pool 17 to enter the oil nozzle 11 to form spraying.
The melt differential electrostatic spinning pre-oriented filament continuous preparation device comprises all stages of suction air pipes, wherein each stage of suction air pipe consists of a suction air pipe upper end outer shell 4-2, a suction air pipe lower end outer shell 4-4 and a suction air pipe inner pipe 4-1, as shown in figure 2, the suction air pipe upper end outer shell 4-2, the suction air pipe lower end outer shell 4-4 and the suction air pipe inner pipe 4-1 are screwed and fixed by screws, the suction air pipe upper end outer shell 4-2 and the suction air pipe lower end outer shell 4-4 form an outer shell, and a section of closed cavity is formed between the outer shell and the suction air pipe inner pipe 4-1. The inner pipe 4-1 of the suction air pipe is provided with a plurality of small through holes 4-3 processed around the inner wall of the inner pipe, the outer diameter of each small through hole 4-3 is tangent to the inner diameter of the inner pipe 4-1 of the suction air pipe, the axis of each small through hole 4-3 inclines downwards and forms an acute angle with the horizontal plane, compressed air generated by the air compressor 20 enters the upper shell 4-2 of the suction air pipe, the lower shell 4-4 of the suction air pipe and a clearance cavity of the suction air pipe 4-1, a plurality of tangential air flows are formed along the small through holes 4-3 on the inner wall of the inner pipe 4-1 of the suction air pipe, and negative pressure is generated at the center of the cyclone, so that fibers are sucked into the suction air pipe and sent out.
According to the melt differential electrostatic spinning pre-oriented filament continuous preparation device, a second-stage suction air pipe fixing device 5 is composed of a second-stage suction air pipe support 5-1, a lantern ring 5-4, a pressing plate 5-2, a screw 5-3 and a locking nut 5-5, and is shown in figure 3. The lantern ring 5-4 is in interference fit with the second-stage suction air pipe 5-1, two ends of the lantern ring 5-4 are provided with extended shafts, as shown in fig. 4, the shafts can rotate in grooves of the second-stage suction air pipe support 5-1, a plurality of small hole angle-fixing holes 5-6 are evenly distributed on one side of each shaft along the axial direction, a circumferential angle difference exists between the angle-fixing holes 5-6, when the lantern ring 5-4 is rotated until a certain small hole is vertically upward, a screw 5-3 is used for connecting the pressing plate 5-2 with the lantern ring 5-4, the rotation angle of the lantern ring 5-4 is fixed, further, the rotation angle of the second-stage suction air pipe 5-4 is fixed, the locking nut 5-5 is screwed, and the lantern ring 5-4 is fixed.
According to the continuous preparation device for the melt differential electrostatic spinning pre-oriented filaments, an oiling agent inlet of an oiling nozzle is a funnel-shaped structure oiling nozzle main body 11-1 with the diameter gradually reduced, as shown in figure 5, the pressure applied to oiling agent at the inlet is increased rapidly, in addition, an oiling nozzle separation net 11-2 is arranged at an oiling agent outlet and serves as an intercepting net, an oiling nozzle front cover 11-3 presses the oiling nozzle separation net 11-2, the mesh size of the oiling nozzle separation net 11-2 is hundreds of microns, and the oiling agent can be crushed into small liquid drops. The oil agent in the form of droplets can be sufficiently contacted with the fibers in the filaments, and the bundling property of the oil agent is effectively utilized. The bundling property of the filaments is further enhanced through the bundling action of the oiling agent, and the mechanical property of the filaments is improved.
The application method of the melt differential electrostatic spinning pre-oriented filament continuous preparation device comprises the steps of adding a polymer raw material into a plunger type extruder 1, plasticizing the polymer raw material into a molten fluid under the action of high temperature and high pressure, uniformly distributing the molten fluid to each conical surface of a multilayer differential nozzle 2 through an internal flow channel of the multilayer differential nozzle 2, and uniformly expanding the molten fluid into a molten film. The electrode plate 3 is connected with a high-voltage electrostatic generator 11, is endowed with high voltage of dozens of kilovolts, and the multilayer differential nozzle 2 is grounded. Under the action of a high-voltage electric field, each multilayer differential nozzle 2 generates hundreds of fibers. The air compressor 20 is started to introduce compressed air into the first-stage suction air pipe 4, the second-stage suction air pipe 6, the third-stage suction air pipe 8 and the fourth-stage suction air pipe 10, and the plasma generator 16 is started to convert the compressed air entering the second-stage suction air pipe 6 into plasma. The superfine fibers are drawn to the trumpet-shaped air suction ring 7 by the air flow generated by the primary air suction pipe 4 and the secondary air suction pipe 6 of the fiber guide system. The third stage suction air pipe 8 and the fourth stage suction air pipe 10 below the horn-shaped suction ring 7 are connected by a plastic pipe 8, the generated reinforced whirlwind sucks the fibers and bundles the fibers, and the fiber bundles are pulled by a suction gun 21 to pass through an oil nozzle 11 at the beginning of spinning, as shown in figure 6, and are collected by a roller 13. After the continuous bundling is stable, the oil pump 18 and the motor 19 are started to convey the oil from the oil reservoir 17 to the nozzle 11, and oil mist is formed under pressure to make the fibers adsorb the oil mist. The roller 13 is actuated and the bundled fiber bundle is drawn, oriented and collected by the high speed roller 13.
Claims (5)
1. Melt differential electrostatic spinning pre-oriented filament continuous preparation device is characterized in that: the device consists of a spinning system, a fiber guide system, a bundling system, an oiling system and collecting rollers, which are arranged from top to bottom in sequence and are fixed by a device bracket; the spinning system consists of a plunger type extruder, a plurality of layers of differential nozzles, an electrode plate and a high-voltage static electricity generating device, wherein the plurality of layers of differential nozzles are connected below the plunger type extruder; the fiber guiding system consists of an air compressor, a plasma generator, a first-stage suction air pipe, a support, a second-stage suction air pipe and a second-stage suction air pipe fixing device, wherein the upper end face of the first-stage suction air pipe is connected with the electrode plate and is coaxially arranged, the first-stage suction air pipe is clamped on the support, and the second-stage suction air pipe is arranged below the first-stage suction air pipe and is fixed by the second-stage suction air pipe fixing device; one part of compressed air generated by the air compressor directly flows into the first-stage suction air pipe through the air pipe, and the other part of the compressed air forms plasma under the high-pressure ionization action of the plasma generator and flows into the second-stage suction air pipe; the bundling system consists of a horn-shaped air suction ring, a third-stage air suction pipe, a fourth-stage air suction pipe and a plastic pipe, wherein the two air suction pipes are adhered by the plastic pipe; the oiling system comprises glib talker, oil pump, oil storage pool and oil pump motor, and the oil pump is driven by oil pump motor, impresses the oil in the oil storage pool into the glib talker through leading oil pipe and forms the spraying.
2. The apparatus for continuously producing melt differential electrospun pre-oriented filaments according to claim 1, wherein: each stage of suction air pipe consists of a suction air pipe upper end shell, a suction air pipe lower end shell and a suction air pipe inner pipe, wherein the upper end shell, the suction air pipe lower end shell and the suction air pipe inner pipe are screwed and fixed by screws, the upper end shell and the suction air pipe lower end shell form a shell, and a section of closed cavity is formed between the shell and the suction air pipe inner pipe; the inner pipe of the suction air pipe is provided with a plurality of small through holes processed around the inner wall of the inner pipe, the outer diameter of each small through hole is tangent to the inner diameter of the inner pipe of the suction air pipe, the axis of each small through hole inclines downwards and forms an acute angle with the horizontal plane, compressed air generated by the air compressor enters a gap cavity of the upper end shell of the suction air pipe, the lower end shell of the suction air pipe and the suction air pipe, a plurality of strands of tangential air flows are formed along the through holes in the inner wall of the suction air pipe, and negative pressure is generated at the center of the cyclone.
3. The apparatus for continuously producing melt differential electrospun pre-oriented filaments according to claim 1, wherein: second level suction tuber pipe fixing device is by second level suction tuber pipe support, the lantern ring, pressing plates, screw and lock nut are constituteed, lantern ring card is in the suction opening department of second level suction tuber pipe, with second level suction tuber pipe interference fit, there is the axle of extension at the both ends of the lantern ring, can be at the inslot rotation of second level suction tuber pipe support, a plurality of apertures of axial evenly distributed are followed to one side of axle, there is the circumference angle difference between each aperture, when rotatory lantern ring is vertical upwards to certain aperture, with the screw connection pressing plates and the lantern ring, it is fixed with lantern ring rotation angle, and then it is fixed with the rotation angle of second level suction tuber pipe, the rotation angle of second level suction tuber pipe is confirmed between 0-45, tighten lock nut, it is fixed with the lantern ring.
4. The apparatus for continuously producing melt differential electrospun pre-oriented filaments according to claim 1, wherein: the length of the plastic pipe is 3-15 cm.
5. The apparatus for continuously producing melt differential electrospun pre-oriented filaments according to claim 1, wherein: the oil nozzle mainly comprises an oil nozzle main body, an oil nozzle separation net and an oil nozzle front cover, wherein the oil nozzle main body, the oil nozzle separation net and the oil nozzle front cover are adhered by glue; the diameter of an oiling agent inlet in the oil nozzle main body is a funnel-shaped structure with gradually reduced diameter, the pressure of oiling agent at the inlet is increased rapidly, an oil nozzle separation net is arranged at an oiling agent outlet, the mesh size is hundreds of microns, and an oil nozzle front cover is used for protecting the oil nozzle separation net from being stuck and blocked by fibers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210020417.9A CN114197062B (en) | 2022-01-10 | 2022-01-10 | Melt differential electrostatic spinning preoriented filament continuous preparation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210020417.9A CN114197062B (en) | 2022-01-10 | 2022-01-10 | Melt differential electrostatic spinning preoriented filament continuous preparation device |
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| Publication Number | Publication Date |
|---|---|
| CN114197062A true CN114197062A (en) | 2022-03-18 |
| CN114197062B CN114197062B (en) | 2024-04-23 |
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| CN202210020417.9A Active CN114197062B (en) | 2022-01-10 | 2022-01-10 | Melt differential electrostatic spinning preoriented filament continuous preparation device |
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| CN115369512A (en) * | 2022-08-09 | 2022-11-22 | 杭州建顺化纤有限公司 | Production process of nylon yarn |
| CN116695266A (en) * | 2023-08-09 | 2023-09-05 | 江苏新视界先进功能纤维创新中心有限公司 | Air draft system, device comprising same and application |
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| CN114197062B (en) | 2024-04-23 |
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