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Electrostatic spinning emitting electrode

An electrospinning, emitter technology, applied in textiles and papermaking, filament/thread forming, spinneret assemblies, etc., can solve problems such as uneven distribution of spinning solution, droplet splashing, and electric field interference between jets , to avoid maintenance difficulties, avoid uneven thickness, and avoid easy blocking

Active Publication Date: 2021-12-31
昆承新材料科技江苏有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This liquid supply method will lead to uneven distribution of spinning solution on the steel wire, which will lead to the problem of uneven thickness of nanofibers deposited on the substrate; Under the influence of high-voltage electric field, there is a problem of splashing droplets, which leads to product defects
Secondly, this method of coating the supply liquid on the steel wire cannot accurately control the amount of spinning liquid carried on the steel wire. If there is too much spinning liquid carried on the steel wire, the problem of electric field interference between multiple jets will occur; if the steel wire carries If there is too little spinning solution, the polymer solution will dry up on the surface of the steel wire and form "flying filaments" and "hanging filaments"
These will lead to the problem of unstable electrospinning

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

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Effect test

example 1

[0033] An electrospinning emitter described in the present invention prepares nanofiber waterproof composite fabrics. The electrospinning nanofiber waterproof composite fabric is made by compounding an electrospinning waterproof nanofiber film and a polyester fabric. Therefore, the nanofibrous membrane used needs to be uniform and have a thickness of 20 μm. In order to meet the above requirements, the nanofiber material used is PVDF.

[0034] Dissolve PVDF in DMF and prepare a 20wt% PVDF / DMF solution as a spinning solution and store it in the storage box 101 for future use.

[0035] DMF is added into the cleaning tank 301 as a cleaning solution, so that the cleaning solution is submerged in a quarter of the height of the cleaning brush head 303 .

[0036] The polyester fabric is placed between the unwinding device 600 and the winding device 700 as the base, and the base moves at a constant speed with a linear speed of 0.1 m / s.

[0037] A rectangular stainless steel strip wi...

example 2

[0052] An electrospinning emitter described in the present invention prepares a nanofiber PET composite filter material with H13 grade. The high-efficiency composite filter material is made by compounding an electrospun nanofiber membrane with high-efficiency filtration performance and a PET base material. Therefore, the nanofiber membrane used needs to be uniform, with an average fiber diameter of 200nm and a thickness of 10μm, so as to achieve the filtration performance of the H13 filtration level. In order to meet the above requirements, the nanofiber material used is PA6.

[0053] Dissolve PA6 in formic acid, configure it as a 12wt% PA6 / acetic acid solution, and store it in the liquid storage box 101 as the spinning solution for future use.

[0054] Acetic acid is added into the cleaning tank 301 as a cleaning solution, so that the cleaning solution is submerged in a quarter of the height of the cleaning brush head 303 .

[0055] Put PET as the substrate between the unwi...

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Abstract

The invention provides an electrostatic spinning emitting electrode. An emitting electrode moves among an electrostatic spinning working area, a liquid adding device, an emitting electrode cleaning device and an emitting electrode drying device along with an annular insulating transmission belt. The liquid adding device can be used for coating any specified position of the emitting electrode with any metered spinning liquid. In the electrostatic spinning working area, under the action of a high-voltage electric field, the spinning liquid carried on the emitting electrode forms nanofibers which are deposited on a substrate. After passing through the electrostatic spinning working area, the emitting electrode is conveyed into the emitting electrode cleaning device to be cleaned, and the emitting electrode is put into use again after being dried by the emitting electrode drying device behind the emitting electrode cleaning device. The continuous, stable and large-scale nanofiber production is realized, and the problems that a needle head is blocked, the productivity is low, splashing is easy to generate, the electric field interference among multiple jets is serious and the like are solved. And secondly, the distribution position and the deposition thickness of the electrospun nanofibers on the substrate can be freely adjusted.

Description

technical field [0001] The patent of the invention belongs to the field of electrospinning, and in particular relates to an electrospinning device. [0002] technical background [0003] Electrospinning is an important method for preparing functional nanofibrous films. Especially in recent years, electrospinning technology has become the mainstream technology for nanofiber manufacturing due to its continuous, convenient, fast, simple process and low cost. At present, large-scale electrospinning technology is divided into two categories, one is multi-needle electrospinning technology, represented by Finetex Technology Inc. and TOPTECH, etc.; the other is non-needle electrospinning technology, represented by Donaldson and Elmarco. Its products have been widely used in many high-tech fields such as filter materials, biomedical materials, energy battery materials, and smart wearable materials. [0004] In the electrospinning technology, such as the patent application number 200...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/00D01D4/04
CPCD01D5/0092D01D4/04
Inventor 蔡云屾
Owner 昆承新材料科技江苏有限公司
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