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High-efficiency needleless coaxial electrostatic spinning device and 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: 2014-02-12
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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  • High-efficiency needleless coaxial electrostatic spinning device and method
  • High-efficiency needleless coaxial electrostatic spinning device and method
  • High-efficiency needleless coaxial electrostatic spinning device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] use figure 1 The high-efficiency needle-free coaxial electrospinning device shown is used for coaxial electrospinning. The core solution is 8% polyacrylonitrile (PAN) solution, and the shell solution is 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 ladder-shaped needle-free nozzle 1 In the central cylindrical hollow inner tube 6, the core spinning solution and the shell spinning solution are left from the top layer of the ladder-shaped needle-free nozzle 1 along the surface of the ladder-shaped needle-free nozzle from top to bottom under the action of their respective propellers, The edges of each layer of the ladder-shaped needle-free nozzle are covered with two layers of spinning solution. At this time, the voltage o...

Embodiment 2

[0034] like figure 1 and figure 2 As shown, a high-efficiency 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. It is characterized in that 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, and the stepped Below the needle-free 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 into 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 gradually increases from the top layer to the bottom layer. The inner side of the layer edge ...

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Abstract

The invention relates to a high-efficiency needleless coaxial electrostatic spinning device and method. The high-efficiency needleless coaxial electrostatic spinning device comprises a step-shaped needleless spinneret, a liquid feed system, a solution recovery tank, a receiving board and a high-voltage electrostatic generator. The liquid feed system comprises a propeller, an insulating rod and solution storing containers. A cylindrical hollow portion is arranged in the center of the step-shaped needleless spinneret, wherein two infusion catheters with different diameters are concentrically arranged at the cylindrical hollow portion in the axial direction; the two infusion catheters with different diameters are connected with the shell solution storing container and the core solution storing container respectively; the solution recovery tank is arranged at the bottom of the step-shaped needleless spinneret. According to the method, the high-efficiency needleless coaxial electrostatic spinning device is used for spinning. The step-shaped needleless spinneret of the high-efficiency needleless coaxial electrostatic spinning device can avoid the phenomenon that a pinhead is blocked, and is easy to clean and good in stability. The electrostatic spinning method effectively improves production efficiency of core-shell structure nanofiber and can realize continuous and large-scale production of the core-shell structure nanofiber.

Description

technical field [0001] The invention belongs to the field of coaxial electrostatic spinning, in particular to a high-efficiency needle-free coaxial electrostatic spinning device and 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 ...

Claims

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Application Information

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IPC IPC(8): D01D5/00D01D5/34
Inventor 覃小红蒋国军
Owner HENAN XINYE TEXTILE
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