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Rotary electrostatic spinning device for preparing nano fibers

An electrospinning and nanofiber technology, applied in fiber processing, textile and papermaking, filament/thread forming, etc., can solve the problems of air breakdown, discharge, solution fire and combustion, etc., and achieve the effect of reducing corona discharge phenomenon

Active Publication Date: 2015-12-30
昆山同日机器人智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Because the existing rotary generator is an exposed metal structure, when the voltage is too high, air breakdown will occur and discharge will occur. If an organic flammable solvent is used, the solution in the entire open rotary generator tank will catch fire and burn, so there is no Needle spinning is generally only suitable for electrospinning of water-soluble polymers, and has limitations for electrospinning of water-insoluble polymers

Method used

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  • Rotary electrostatic spinning device for preparing nano fibers
  • Rotary electrostatic spinning device for preparing nano fibers
  • Rotary electrostatic spinning device for preparing nano fibers

Examples

Experimental program
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Effect test

Embodiment 1

[0025] see figure 2 , a rotary electrospinning device 20 for preparing nanofibers, comprising a high-voltage power supply 202, a polarized electrode 203 connected to the positive and negative poles of the high-voltage power supply 202, and a receiving counter electrode 204, a liquid tank 207, placed in the liquid tank The spinning solution 205 in the spinning solution 205, the rotation generator 201 partially placed in the spinning solution 205, the polarized electrode 203 is located inside the rotation generator 201, and the surface of the rotation generator 201 is a dielectric material , the dielectric constant is not less than 10, preferably not less than 100, more preferably not less than 1000, and the dielectric material is ceramic, or a mixed material of ceramic, metal powder and polymer material. The ceramics include lead zirconate titanate, strontium barium titanate, bismuth zinc niobium. The shape of the rotary generator is circular, with an outer diameter of 70mm, ...

Embodiment 2

[0027] see image 3 , a rotary electrospinning device 30 for preparing nanofibers, comprising a high-voltage power supply 302, a polarized electrode 303 connected to the positive and negative poles of the high-voltage power supply 302, and a receiving counter electrode 304, a liquid tank 307, placed in the liquid tank The spinning solution 305 inside, the rotation generator 301 partially placed in the spinning solution 305, the polarized electrode 303 is located in the spinning solution 305 outside the rotation generator and is located in the rotation generator Below the generator 301, the polarized electrode 303 is arc-shaped, its inner diameter is close to the outer diameter of the rotary generator 301, and the length of the arc is 5%-40% of the circumference, and the electrode material includes: wire, net, grid, foam , sponge, cloth, braid, fin, parallel plate, cohesive powder structure, interwoven material, etc., the specific surface area of ​​the polarized electrode is at...

Embodiment 3

[0029] see Figure 4 , a rotary electrospinning device 40 for preparing nanofibers, comprising a high-voltage power supply 402, a polarized electrode 403 connected to the positive and negative poles of the high-voltage power supply 402, and a receiving counter electrode 404, a liquid tank 407, placed in the liquid tank The spinning solution 405 in the spinning solution 405, the rotation generator 401 partially placed in the spinning solution 405, the polarized electrode 403 is located inside the rotation generator 401, and the rotation generator 401 is a dielectric material. The electrical constant is not less than 10, preferably not less than 100, more preferably not less than 1000, and the dielectric material is ceramics, or a mixed material of ceramics, metal powder and polymer materials. The ceramics include lead zirconate titanate, strontium barium titanate, bismuth zinc niobium. The high voltage power supply is a high voltage direct current power supply. The shape of t...

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Abstract

The invention relates to a rotary electrostatic spinning device for preparing nano fibers. The device comprises a high-voltage power supply, a polarization electrode and a receiving counter electrode which are connected to positive and negative electrodes of the high-voltage power supply, a solution tank, a spinning solution contained in the solution tank, and a rotary generator partially placed in the spinning solution, wherein the rotary generator is a dielectric material with dielectric constant not less than 10. According to the rotary electrostatic spinning device for preparing the nano fibers, the dielectric material with high dielectric constant is used, the corona discharge phenomenon can be reduced when high electric field the same as that of a conductor material is kept, and the spinning solution can not be ignited; and the rotary electrostatic spinning device can be applied to various electrostatic spinning operations.

Description

technical field [0001] The invention relates to a rotary electrostatic spinning device for preparing nanofibers, in particular to a rotary electrostatic spinning device for preparing nanofibers through electrostatic spinning technology. Background technique [0002] Electrospinning technology is the use of electrostatic force to prepare ultrafine fibers or yarns, usually in nanometer to micrometer size, from solution. The droplet is charged under the action of the electric field, and the electrostatic force will neutralize the surface tension to deform the droplet. When the electrostatic force is greater than the surface tension to a certain extent, the droplet will form a jet stream, which splits during the spraying process and dissolves the solvent. Evaporated to finally obtain nanofibers. Taylor cones are formed where the thin stream is ejected. If the intermolecular forces of the droplet are strong enough, the rivulet does not break apart and instead forms a bundle of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/00
Inventor 邓超然
Owner 昆山同日机器人智能科技有限公司
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