Electrostatic spinning device and device for efficiently preparing nanofiber yarns

A nanofiber, electrospinning technology, applied in electrospinning, fiber processing, yarn and other directions, can solve the problems of difficult control of the production process, low silk output, mutual interference of jets, etc., to achieve easy control of the production process and improve production. Efficiency, the effect of facilitating agglomeration

Active Publication Date: 2020-09-04
贺海军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above methods generally use the traditional DC voltage to spin the electrospinning technology, which has problems such as low silk out

Method used

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  • Electrostatic spinning device and device for efficiently preparing nanofiber yarns
  • Electrostatic spinning device and device for efficiently preparing nanofiber yarns

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] Utilize described electrospinning device to prepare the method for nanofiber yarn, carry out according to the following steps:

[0073] Step 1: Dissolving polyacrylonitrile (PAN) in N, N-dimethylformamide (DMF), stirring thoroughly to prepare a spinning solution with a concentration of 12wt%, and injecting it into the syringe 114;

[0074] Step 2: In an environment with room temperature and a relative humidity of 40%, adjust the distance between the receiving part 104 and the metal spinning needle 101 to 100 mm to 200 mm, adjust the position of the guide hook 107, and check whether the gear transmission system is normal;

[0075] Step 3: Turn on the micro-injection pump 115, adjust the propulsion speed of the spinning solution to 0.5mL / h, and when the spinning solution evenly flows out from the metal spinning needle 101, turn on the AC high voltage generator 102, and adjust its voltage to 25kV , so that the head end of the metal spinneret 101 generates a stable jet unde...

Embodiment 2

[0079] Utilize described electrospinning device to prepare the method for nanofiber yarn, carry out according to the following steps:

[0080] Step 1: Dissolving polyacrylonitrile (PAN) in N, N-dimethylformamide (DMF), stirring thoroughly to prepare a spinning solution with a concentration of 12wt%, and injecting it into the syringe 114;

[0081] Step 2: In an environment with room temperature and a relative humidity of 40%, adjust the distance between the receiving part 104 and the metal spinning needle 101 to 100 mm to 200 mm, adjust the position of the guide hook 107, and check whether the gear transmission system is normal;

[0082] Step 3: Turn on the micro-injection pump 115, adjust the propulsion speed of the spinning solution to 0.5mL / h, and when the spinning solution evenly flows out from the metal spinning needle 101, turn on the AC high voltage generator 102, and adjust its voltage to 25kV , so that the tip of the metal spinneret 101 generates a stable jet under the...

Embodiment 3

[0086] Utilize described electrospinning device to prepare the method for nanofiber yarn, carry out according to the following steps:

[0087] Step 1: Dissolving polyacrylonitrile (PAN) in N, N-dimethylformamide (DMF), stirring thoroughly to prepare a spinning solution with a concentration of 12wt%, and injecting it into the syringe 114;

[0088] Step 2: In an environment with room temperature and a relative humidity of 40%, adjust the distance between the receiving part 104 and the metal spinning needle 101 to 100 mm to 200 mm, adjust the position of the guide hook 107, and check whether the gear transmission system is normal;

[0089] Step 3: Turn on the micro-injection pump 115, adjust the propulsion speed of the spinning solution to 0.5mL / h, and when the spinning solution evenly flows out from the metal spinning needle 101, turn on the AC high voltage generator 102, and adjust its voltage to 25kV , so that the tip of the metal spinneret 101 generates a stable jet under the...

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PUM

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Abstract

The invention provides an electrostatic spinning device for efficiently preparing nanofiber yarns. The device comprises a liquid supply system, a spinning system, a collecting system, and a driving system, wherein the liquid supply system is used for providing a spinning solution for the spinning system; the spinning system is used for drafting the spinning solution flowing out of a metal spinningneedle head into nano fibers under the action of electric field force and spraying the generated nano fiber bundles to a collecting system; the collecting system is used for twisting and forming thereceived nanofiber bundles and then collecting the nanofiber bundles; the driving system is used for driving the collecting system to work; the spinning system comprises the metal spinning needle headused for spraying nanofiber bundles, and the metal spinning needle head is connected with an alternating-current high-voltage generator to form a high-voltage electric field. The electrostatic spinning device disclosed by the invention has the advantages of high production efficiency and easily controlled production technique, and is suitable for the field of electrostatic spinning.

Description

technical field [0001] The invention relates to the technical field of electrospinning, in particular to an electrospinning device for efficiently preparing nanofiber yarns and a method for preparing nanofiber yarns using the device. Background technique [0002] Due to the characteristics of large specific surface area and high porosity, nanofibers prepared by electrospinning technology have great application potential in the fields of filter materials, tissue engineering, composite materials, etc. The mechanical properties are poor, which limits its application and development in some fields. Therefore, processing nanofibers into the form of nanofiber yarns is of great significance for expanding the application range of nanofibers. [0003] At present, the yarn forming methods of electrospinning nanofibers mainly include gap clustering mechanical twisting yarn, electrospinning disk clustering mechanical twisting yarn, phase separation clustering water flow twisting yarn, ...

Claims

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Application Information

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IPC IPC(8): D02G3/02D01H1/36D01H7/26D01H7/48D01D5/00
CPCD01D5/003D01D5/0061D01D5/0076D01H1/365D01H7/26D01H7/48D02G3/02
Inventor 贺海军高敏韩保国
Owner 贺海军
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