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An electrospinning device for preparing nanofiber bundles

A nanofiber and electrospinning technology, which is applied in fiber processing, textiles and papermaking, and filament/thread forming, etc., can solve the problems of complex device structure, low fiber orientation, and poor mechanical properties, and achieve simple device structure, The effect of good mechanical properties and convenient quantity

Active Publication Date: 2017-06-06
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, single-nozzle electrospinning uses only one spinneret jet spinning, which is inefficient and cannot be mass-produced
At present, there are also devices that use multi-nozzle electrospinning to prepare nanofiber bundles. Due to the inability to control the electric field repulsion between nozzles in some of these devices, the jet direction of the spinning solution is unstable, resulting in low fiber orientation in the prepared nanofiber bundles. poor performance
Some improved devices can improve the orientation of the prepared nanofiber bundles, but the device structure is complex, the number of spinnerets and other structural changes are inflexible, and the fiber bundle structure is single, which also limits the promotion of the device.

Method used

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  • An electrospinning device for preparing nanofiber bundles
  • An electrospinning device for preparing nanofiber bundles
  • An electrospinning device for preparing nanofiber bundles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] like Figure 1 to Figure 5 As shown, an electrospinning device for preparing nanofiber bundles provided in this embodiment includes a flow pump 1, a glass syringe 2 placed on the flow pump 1, and a polyamide connected to the output end of the glass syringe 2 and the input end of the distributor 4. The vinyl fluoride tube 3 constitutes the spinning solution delivery device. The distributor 4 is a multi-stage distributor, which is composed of a liquid storage tank 12 , a primary porous plate 13 and a secondary porous plate 14 in sequence. like figure 2 shown. The output end of the distributor 4 is connected to a spinneret 5 . The spinneret 15 is distributed on the spinneret 5, and the auxiliary electrode 16 is fixed on the spinnerette 5 by an insulating material, such as image 3 The arrangement of the auxiliary electrode 16 and the position of the spinneret 15 is shown. The axis of the center plane of the auxiliary electrode 16 coincides with the axis of the spinn...

Embodiment 2

[0037] The preparation of spinning solution and bath liquid of this embodiment is the same as that of Example 1.

[0038] Wherein spinning plate 5 is changed into 15 spinnerets, as image 3 Shown is the arrangement of 15 spinnerets; the voltage of the high-voltage power supply 6 is 26kV, and the flow rate of each spinneret is 0.1mL / h; the size of the auxiliary electrode is 60mm×40mm, and other parameters and nanofiber preparation methods are the same as in Example 1.

[0039] The structure and mechanical properties of the nanofiber bundles prepared in this example are shown in Table 3. The degree of orientation of the spun nanofiber bundle is about 22% higher than that of the 15 spinneret without auxiliary electrodes. The diameter of nanofiber bundles spun by 15 spinnerets is about 12 times the diameter of nanofiber bundles spun by single spinnerets at the same winding speed.

[0040] Table 315 Structure and mechanical properties of spinneret electrospun polyamide 6 nanofiber ...

Embodiment 3-5

[0043] The preparation of spinning solution and bath solution of this embodiment is the same as that of Example 2.

[0044] Among them, the heights of the 15 spinneret auxiliary electrodes 16 copper sheets were respectively changed to 15mm, 17.5mm, and 22.5mm, and other technical parameters of the device and the preparation method of nanofibers were the same as in Example 2. The orientation degrees of the prepared three nanofiber bundles are shown in Table 4.

[0045] Table 4 Orientation degree of polyamide 6 nanofiber bundles spun with different sheet height auxiliary electrodes

[0046]

[0047] It can be concluded from the above Table 4 that the auxiliary electrodes 16 with different sheet heights have different improvement effects on the multi-nozzle electric field, resulting in different orientation degrees of the spun nanofiber bundles, but the orientation degree of the spun nanofiber bundles after using the auxiliary electrodes 16 is different. Both are larger than ...

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Abstract

The invention discloses an electrostatic spinning device for manufacturing nanometer fiber bundles. In the device, a multi-nozzle spinning plate is provided with auxiliary electrodes. Due to the existence of the auxiliary electrodes, electric field disturbance between the nozzles is reduced, so that multi-nozzle electric field distribution becomes even, therefore, the orientation degree of the spun nanometer fiber bundles is increased by about 25 percent, the mechanical property is increased accordingly, the linear density of the spun nanometer fiber bundles is increased along with increase of the number of the spinning nozzles, and the breaking force is increased accordingly. The nanometer fiber bundles manufactured through the device can be directly used for textile processing. Due to the excellent structure and the excellent mechanical properties of the nanometer fiber bundles, the nanometer fiber bundles have good application prospects in the fields of ultra-light-and-thin textile, intelligent textile, sensors and biomedical materials.

Description

technical field [0001] The invention relates to an electrospinning device for preparing nanofiber bundles, more specifically, it relates to an electrospinning device with auxiliary electrodes for preparing nanofiber bundles. Background technique [0002] Electrospinning is the most effective method to produce nanofibers, and its device is simple and low cost, so electrospinning is widely used to produce nanofibers. Compared with traditional fibers, nanofibers have extremely high specific surface area and flexible surface properties, so they have very broad application prospects in the fields of biomedical engineering, electronic engineering, textiles and filtration. However, most of the current electrospun products are nanofiber membranes, and the product form is single, which limits the application range of nanofibers. The randomly oriented structure and poor mechanical properties of nanofibrous membranes greatly limit its textile applications. [0003] In recent years, m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D13/00D01D5/00
Inventor 潘志娟田龙李杰
Owner SUZHOU UNIV
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