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A needle-free coaxial electrospinning device and spinning method

A coaxial electrospinning, needle-free technology, applied in textile and papermaking, filament/thread forming, fiber processing, etc., can solve the problem of no coaxial electrospinning device, and achieve continuous and large-scale The effect of producing, avoiding easy clogging, and avoiding needle clogging

Active Publication Date: 2016-11-16
HENAN XINYE TEXTILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the research on the large-scale preparation of electrospun nanofibers is limited to the preparation of nanofibers with a single structure, and there is no large-scale coaxial electrospinning device for large-scale preparation of core-shell nanofibers

Method used

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  • A needle-free coaxial electrospinning device and spinning method
  • A needle-free coaxial electrospinning device and spinning method
  • A needle-free coaxial electrospinning device and spinning method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] use figure 1 The shown needle-free coaxial electrospinning device performs coaxial electrospinning, the core layer solution uses a polyacrylonitrile (PAN) solution with a mass concentration of 8%, and the shell layer solution uses a 12% polyurethane (PU) solution. The output end of the liquid storage container with the core layer solution is placed in the middle cylindrical hollow outer tube 7 of the ladder-shaped needle-free nozzle 1, and the output end of the liquid storage container with the shell solution is placed in the middle of the ladder-shaped needle-free nozzle 1 In the cylindrical hollow inner tube 6, the core layer spinning solution and the shell layer spinning solution flow down from the top layer of the ladder-shaped needle-free nozzle 1 along the surface of the ladder-shaped needle-free nozzle under the action of their respective propellers, so that the ladder Each edge of the needle-free nozzle is covered with two layers of spinning solution. At this t...

Embodiment 2

[0033] Such as figure 1 and figure 2 As shown, a needle-free coaxial electrospinning device includes five parts: a stepped needle-free spinneret 1, a liquid supply system 2, a solution recovery tank 3, a receiving device 4, and a high-voltage electrostatic generator 5. Its characteristics That is, the receiving device 4 is provided above the stepped needle-free spinneret 1, and a solution recovery tank 3 is placed at the bottom of the stepped needle-free spinneret 1. Below the needle spinneret 1, there is a terminal connected to the high-voltage generator 5; the center of the stepped needle-free spinneret 1 is a hollow place, and the output end of the liquid supply system 2 is placed in the The hollow part of the stepped needle-free spinneret 1; the stepped needle-free spinneret 1 is circular and stepped, with a three-layer structure, and the diameter from the top layer to the bottom layer gradually increases, and each layer The inner side of the edge is 45° to the horizont...

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Abstract

The invention relates to a needle-free coaxial electrostatic spinning device and a spinning method. The device includes a stepped needle-free spinneret, a liquid supply system, a solution recovery tank, a receiving plate and a high-voltage electrostatic generator. The liquid system includes a propeller, an insulating rod, and a liquid storage container; the center of the stepped needle-free spinneret is a cylindrical hollow, and two infusion conduits with different diameters are arranged concentrically along the axial direction at the cylindrical hollow; The two infusion conduits with different diameters are respectively connected to the shell liquid storage container and the core layer liquid storage container; the bottom of the stepped needle-free spinneret is placed with the solution recovery tank; the method is to use the above-mentioned non-needle Needle-type coaxial electrospinning device for spinning. The ladder-shaped needle-free nozzle of the present invention can avoid the phenomenon of needle clogging, and is easy to clean and has good stability; the electrospinning method of the present invention effectively improves the production efficiency of the core-shell structure nanofibers, and can realize the production efficiency of the core-shell structure nanofibers. Continuous and large-scale production.

Description

technical field [0001] The invention belongs to the field of coaxial electrostatic spinning, in particular to a needle-free coaxial electrostatic spinning device and a spinning method. Background technique [0002] Electrospinning technology is currently a simple and feasible method for fabricating nanofibers. It has simple equipment, easy operation, and low preparation cost, and has attracted extensive attention from academia and industry. Nanofibers prepared by electrospinning technology have small diameter, high specific surface area and porosity. These excellent characteristics make nanofibers widely used in biomedicine, filtration protection, energy, catalysis, sensing materials, sound-absorbing materials, etc. play an important role in. [0003] The traditional electrospinning technology uses a single capillary needle as a spinneret, and usually can only prepare nanofibers with a single structure. In order to maximize the potential application value of nanofibers, on...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/00D01D5/34
Inventor 覃小红蒋国军
Owner HENAN XINYE TEXTILE
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