Electrostatic spinning device containing wire electrode and nano-fiber preparation method

A filamentary electrode, electrospinning technology, applied in electrospinning, fiber processing, filament/line forming and other directions, can solve the problems of low nanofiber efficiency, easy clogging of electrodes, etc., to improve preparation efficiency and production efficiency The effect of raising and thinning the diameter

Inactive Publication Date: 2016-10-12
INST OF APPLIED CHEM JIANGXI ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is, in order to overcome the low efficiency of preparing nanofibers from the traditional electrode-wrapped polymer solution and the problems that the electrodes are easily blocked, the present invention provides an electrospinning device and a method for preparing nanofibers comprising filamentary electrodes

Method used

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  • Electrostatic spinning device containing wire electrode and nano-fiber preparation method
  • Electrostatic spinning device containing wire electrode and nano-fiber preparation method
  • Electrostatic spinning device containing wire electrode and nano-fiber preparation method

Examples

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Effect test

Embodiment 1

[0019] Use a single copper wire with a diameter of 0.5mm as a wire electrode, prepare 8% polyvinyl alcohol (PVA) aqueous solution according to the technical specification of 400mm, and control parameter conditions: the distance between the electrode and the receiving substrate is 15cm, the voltage is 30KV, and the feeding system The reciprocating speed is 0.01m / s, the output speed is 3ml / h, and the moving speed of the conveyor belt is 0.1m / s. The PVA nanofiber membrane is collected and the spinning efficiency is significantly improved compared with a single nozzle electrode.

[0020] The electron micrograph of the present embodiment product nanofiber scanning magnification 200 times is as figure 2 As shown, the nanofiber scanning electron microscope photo with a magnification of 4000 times is as follows image 3 shown.

Embodiment 2

[0022] Use a single copper wire with a diameter of 0.5mm as a filamentary electrode, and build an electrospinning device according to the method described in the technical plan. The electrode length is 400mm, and a DMF solution of 10% polyacrylonitrile (PAN) is prepared. Control parameter conditions: electrode and The distance between the receiving substrates is 15cm, the voltage is 10KV, the reciprocating speed of the feeding system is 0.01m / s, the discharging speed is 3ml / h, and the moving speed of the transmission belt is 0.1m / s, and the PAN nanofiber film is collected.

Embodiment 3

[0024] Use a single copper wire with a diameter of 0.5mm as a wire electrode, build an electrospinning device according to the method described in the technical plan, the electrode length is 400mm, prepare a DMF solution of 15% polylactic acid (PLA), control parameter conditions: electrode and receiver The distance between the substrates is 20cm, the voltage is 25KV, the reciprocating speed of the feeding system is 0.01m / s, the output speed is 3ml / h, and the moving speed of the conveyor belt is 0.1m / s, and the PLA nanofiber film is collected.

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Abstract

The invention provides an electrostatic spinning device containing a wire electrode and a nano-fiber preparation method. The electrostatic spinning device containing wire electrode comprises a feeding system (1), the wire electrode (2) and a receiving system (3), wherein the wire electrode and the receiving system are arranged on two planes which are parallel to each other; the feeding system does transverse reciprocating motion on the wire electrode to refresh an encapsulated polymer solution; the wire electrode, which is horizontally arranged, has high-voltage electrostatic electricity and an electric field is formed between the wire electrode and the receiving system; the receiving system is driven by a conveyor belt to do longitudinal movement; and the polymer solution on the wire electrode is cracked into nano-fibers under the action of the electric field and is deposited on the receiving system to form a nano-fiber membrane. In a traditional electrostatic spinning method, the polymer solution is covered with the electrode and the efficiency of preparing the nano-fibers is very low. In the invention, the electrode is covered with the polymer solution and the preparation efficiency is remarkably improved; and compared with a condition that a traditional needle head electrode is easy to block, the wire electrode avoids a solution blocking problem and the nano-fibers can be continuously machined and prepared.

Description

technical field [0001] The invention relates to an electrospinning device including a filamentary electrode and a nanofiber preparation method, belonging to the technical field of nanofiber preparation. Background technique [0002] Nanofibers have broad application prospects in water treatment, air filtration, biomedical materials, and new energy. As a very effective method for processing and preparing nanofibers, electrospinning has always been a research hotspot. As a material processing method, the electrospinning device is the key to the preparation of nanofibers. The traditional electrospinning device uses a single needle method, and the low output is the biggest technical obstacle for the electrospinning technology to move from the laboratory to industrial production and application. Therefore, , Improving the efficiency of electrospinning has become an urgent technical problem in this field. [0003] Existing methods to improve the efficiency of electrospinning inc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/00D04H1/43D04H1/4309D04H1/435D04H1/728
CPCD01D5/0092D01D5/003D01D5/0061D04H1/43D04H1/4309D04H1/435D04H1/728
Inventor 孙复钱张鹏崔红敏董晓娜
Owner INST OF APPLIED CHEM JIANGXI ACAD OF SCI
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