CN211570846U - Melt differential electrospinning orientation nano-filament bundle preparation and collection device - Google Patents
Melt differential electrospinning orientation nano-filament bundle preparation and collection device Download PDFInfo
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- CN211570846U CN211570846U CN201922457353.5U CN201922457353U CN211570846U CN 211570846 U CN211570846 U CN 211570846U CN 201922457353 U CN201922457353 U CN 201922457353U CN 211570846 U CN211570846 U CN 211570846U
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Abstract
The invention discloses a device for preparing and collecting melt differential electrospinning oriented nano tows, which mainly comprises an electrostatic spinning device, a collecting roller rotating shaft, a collecting roller, a rubber roller, a tow collecting device, a cyclone generator, a laser cutting knife and a nano fiber belt guiding device. The nanofiber that electrostatic spinning device prepared collects the film on the collection roller of electrostatic spinning shower nozzle below, then makes the film constantly remove to the little one end of collection roller diameter through rubber roller friction, fixes the laser cutting knife above collecting the roller right side and cuts into the invariable nanofiber area of width with the fibre membrane, and the nanofiber area passes through nanofiber area guiding device's guide, passes the whirlwind generator and can form the nanometer silk bundle. The prepared fiber can be directly twisted continuously, the nano-fiber tows are twisted in a preparation mode and have orientation, the fiber tows are more compact in structure, and the mechanical property is improved; the twist of the nanofiber tows can be adjusted; the device has simple structure, simple operation, and higher economical efficiency and operability.
Description
Technical Field
The invention relates to a device for preparing and collecting melt differential electrospinning oriented nano tows, and belongs to the field of nano fibers.
Background
The electrostatic spinning method is a fiber preparation method which utilizes electric field force to make high molecular solution or melt form tip jet so as to form liquid trickle, and the polymer solution at the needle head is acted by surface tension to form jet flow under the action of electric field, and then is solidified to form fiber. The electrostatic spinning is divided into solution spinning and melt spinning, wherein the melt differential electrostatic spinning can be used for preparing the nano-grade superfine fiber and avoiding the problem of toxic solvent of the solution electrostatic spinning, and the superfine twisted wire prepared by the method is widely applied to the preparation of high-performance wearable fabrics, artificial blood vessels, surgical sutures, biological nano-sensors and other aspects.
However, the current research on the method of preparing twisted fibers by electrospinning still needs to be further improved. In Chinese patent (201510100625.X), airflow in the vertical direction and tangential airflow are coupled to form tornado to directly twist fibers, only one strand of fibers is twisted by the method, and the prepared nanofiber tows have low structural orientation degree. Teo (Wee-Eong Teo, Renuga Gopal, Ramakrishnan Ramaseshan, and the like, A dynamic liquid supply system for connecting electrically produced fiber mixing device [ J ] Polymer,48(12):3400-3405.) and the like propose a water bath receiving device, and the structure of the device is innovated, and the fibers are twisted by using the vortex effect generated when water flows through micropores to prepare the nano twisted wire. The device realizes the continuous preparation of the nanofiber twisted yarn, but the prepared fiber twist is insufficient, and the water flow speed and the spinning speed are difficult to control in the spinning process, so the twisting quality is influenced.
Disclosure of Invention
The invention provides a preparation and collection device of melt differential electrospinning orientation nano tows, aiming at the problem of low orientation of continuous fiber tows. The technology can change the rotating speed of the electrostatic spinning nanofiber membrane collecting roller and the wind speed of the cyclone generator. Thereby obtaining continuously oriented nanofibers of different twists.
The technical scheme for realizing the aim is that the device for preparing and collecting the melt differential electrospinning oriented nano-filament bundle mainly comprises the following components: electrostatic spinning device, collect the roller pivot, collect the roller, the rubber gyro wheel, the silk bundle collection device, the whirlwind generator, laser cutting knife and nanofiber area guiding device, the nanofiber is prepared to electrostatic spinning device, electrostatic spinning device is located and collects the roller top, electrostatic spinning nanofiber membrane collects the roller and is the toper roller, the diameter that electrostatic spinning nanofiber membrane collects the roller and is close to the spinning end is greater than the diameter that is close to the collection end, nanofiber forms the nanofiber membrane at the collection roller, the rubber gyro wheel is located and collects the roller below. The laser cutting knife is positioned above the nanofiber membrane, the cyclone generator is positioned below the nanofiber membrane, and the tow collecting device is positioned below the cyclone generator. The nanofiber that electrostatic spinning device prepared collects the film on the collection roller of electrostatic spinning shower nozzle below, then makes the film constantly remove to the little one end of collection roller diameter through rubber roller friction, fixes the laser cutting knife above collecting the roller right side and cuts into the invariable nanofiber area of width with the fibre membrane, and the nanofiber area passes through nanofiber area guiding device's guide, passes the whirlwind generator and can form the nanometer silk bundle.
The invention relates to a device for preparing and collecting melt differential electrospinning oriented nano tows.
The melt differential electrospinning oriented nano-filament bundle preparation and collection device has electrostatic spinning voltage ranging from 30kV to 60 kV. When the voltage is lower than 30kV, the spinning effect of the equipment is poor, and the product quality is influenced. When the voltage is higher than 60kV, the equipment is easy to break down, the equipment is damaged, and even the personal safety is caused.
The invention relates to a device for preparing and collecting melt differential electrospinning oriented nano tows, wherein the inclination angle range of an electrostatic spinning nanofiber membrane collecting roller is 3-10 degrees (namely the taper angle of the roller is 6-20 degrees). When the inclination angle is less than 3 °, the movement of the fiber film by the friction of the rubber roller is difficult, resulting in the failure of continuous production. When the inclination angle is larger than 10 degrees, the mechanical property of the fiber tows is poor, and the quality of the product is affected.
The melt differential electrospinning oriented nano-filament bundle preparation and collection device can adjust the rotating speed of the electrostatic spinning nano-fiber film collection roller and the wind speed of the cyclone generator to obtain continuous oriented nano-filament bundles with different twists.
By the introduction of the above and the technical scheme, compared with the prior art, the invention has the advantages that:
(1) the fiber can be directly twisted continuously after being prepared.
(2) The preparation twisting of the nanofiber tows has orientation, the structure is more compact, and the mechanical property is improved.
(3) The twist of the nanofiber tows can be adjusted.
(4) The device is simple and easy, is easy to operate, and has higher economical efficiency and operability.
Drawings
FIG. 1 is a schematic structural diagram of a device for preparing and collecting melt differential electrospinning oriented nano-tows.
FIG. 2 is a left side view of the apparatus for preparing and collecting melt differential electrospun oriented nano-tows of the present invention in FIG. 1.
In the figure: 1-an electrostatic spinning device; 2-nanofibers; 3-a nanofiber membrane; 4-collecting roller rotating shaft; 5-a collection roller; 6-rubber roller; 7-a tow collection device; 8-nano-filament bundle; 9-a cyclone generator; 10-nanofiber ribbons; 11-laser cutting knife; 12-nanofiber ribbon guide.
Detailed Description
The invention relates to a device for preparing and collecting melt differential electrospinning oriented nano tows, which mainly comprises an electrostatic spinning device 1, a collecting roller rotating shaft 4, a collecting roller 5, a rubber roller 6, a tow collecting device 7, a cyclone generator 9, a laser cutting knife 11 and a nano fiber belt guiding device 12, as shown in figures 1 and 2. The electrostatic spinning device 1 is used for preparing the nanofibers 2, the electrostatic spinning device 1 is located above a collecting roller 5, the nanofibers 2 form a nanofiber membrane 3 on the collecting roller 5, and a rubber roller 6 is located below the collecting roller 5. The laser cutting knife 11 is positioned above the nanofiber membrane 3, the cyclone generator 9 is positioned below the nanofiber membrane 3, and the tow collecting device 7 is positioned below the cyclone generator 9.
The invention relates to a device for preparing and collecting melt differential electrospinning oriented nano tows, which comprises the following working procedures: the melt differential electrostatic spinning device is started, the water pump and the heating system are started in sequence, after the heating system is heated to a set temperature, the extruder is started, the rotating speed of the extruder is adjusted to 30-50r/min, when the material flowing out of the spinning nozzle 1 is stable and free of impurities, the rotating speed of the extruder is adjusted to 3-5r/min, and the high-voltage electrostatic generator and the air compressor are started to start product production. The nozzle of the electrospinning device 1 produces nanofibers 2 that are deposited on a collection roll 5 to form a nanofiber membrane 3. The nanofiber membrane 3 can move the nanofiber membrane 3 to the right continuously due to the rotary friction effect of the rubber roller 6, the inclination angle of the electrostatic spinning nanofiber membrane collecting roller 5 is 3 degrees, the collecting roller 5 rotates continuously, and the laser cutting knife 11 can cut the nanofiber membrane 3 into a nanofiber belt 10 with a constant width. The nanofiber ribbons 10 are guided by the nanofiber ribbon guiding device 12 to pass through the cyclone generator 9 to form the nanofiber tows 8, the nanofiber ribbons 10 are rotated by the cyclone generator 9 below the right side of the collecting roller 5, and finally the nanofiber tows 8 are collected by the tow collecting device 7.
Claims (4)
1. A melt differential electrospinning orientation nano-filament preparation and collection device is characterized in that: the device mainly comprises an electrostatic spinning device, a collecting roller rotating shaft, a collecting roller, a rubber roller, a tow collecting device, a cyclone generator, a laser cutting knife and a nanofiber belt guiding device, wherein the electrostatic spinning device is used for preparing nanofibers and is positioned above the collecting roller; the laser cutting knife is positioned above the nanofiber membrane, the cyclone generator is positioned below the nanofiber membrane, and the tow collecting device is positioned below the cyclone generator.
2. The apparatus according to claim 1, wherein the apparatus comprises: the electrostatic spinning device is a melt inner conical differential electrostatic spinning device or a melt outer conical differential electrostatic spinning device.
3. The apparatus according to claim 1, wherein the apparatus comprises: the electrostatic spinning voltage range is 30kV to 60 kV.
4. The apparatus according to claim 1, wherein the apparatus comprises: the angle of inclination of the electrospun nanofiber membrane collecting roller ranges from 3 ° to 10 °.
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| CN201922457353.5U CN211570846U (en) | 2019-12-31 | 2019-12-31 | Melt differential electrospinning orientation nano-filament bundle preparation and collection device |
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| CN201922457353.5U CN211570846U (en) | 2019-12-31 | 2019-12-31 | Melt differential electrospinning orientation nano-filament bundle preparation and collection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110923828A (en) * | 2019-12-31 | 2020-03-27 | 北京化工大学 | Melt differential electrospinning orientation nano-filament bundle preparation and collection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110923828A (en) * | 2019-12-31 | 2020-03-27 | 北京化工大学 | Melt differential electrospinning orientation nano-filament bundle preparation and collection device |
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