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Horn-shaped electrospinning nozzle with differential polygon blades at top

A polygonal and trumpet-shaped technology, which is applied in textiles and papermaking, fiber processing, filament/thread forming, etc., can solve the problems of high energy consumption, difficult control of fiber quality, and inconvenient cleaning of needle-free electrospinning technology, achieving increased Large spinning output, stable droplet, avoiding the effect of needle clogging

Inactive Publication Date: 2018-10-26
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the technical problem to be solved by the present invention is to provide a trumpet-shaped electrospinning nozzle with differential polygonal blades on the top to solve the problem of needle blockage, inconvenient cleaning and needle-free electrospinning of traditional capillary needle-type electrospinning devices. High energy consumption of silk technology, difficulty in controlling fiber quality due to open liquid supply, etc.

Method used

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  • Horn-shaped electrospinning nozzle with differential polygon blades at top
  • Horn-shaped electrospinning nozzle with differential polygon blades at top
  • Horn-shaped electrospinning nozzle with differential polygon blades at top

Examples

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Embodiment 1

[0012] Embodiment one: figure 1 As shown, it is an embodiment of the radial electrospinning nozzle based on differential polygonal blades of the present invention—an electrospinning nozzle with two differential polygonal blades, the outward opening angle of the differential polygonal blades is 0°, and the cone angle of the bell mouth is 30°. The spinning nozzle is specifically: the number of the differential polygonal blades 13 is 2, uniformly distributed on the top of the large mouth of the bell mouth 12 along the circumference, and the bell mouth 12 is located at the top of the cylindrical tube 11 (spinning upwards), The inner diameter of the bell mouth 12 is equal to the junction of the cylindrical tube 11, and the connection is tight and smooth, which can realize the barrier-free transportation of spinning fluid; the inner diameter of the cylindrical tube 11 is 1.6mm, the length is 5mm, and the wall thickness is 0.2mm; the height of the bell mouth 12 is 2mm, the cone angle...

Embodiment 2

[0013] Embodiment two: figure 2 and image 3 As shown, it is an embodiment of the radial electrospinning nozzle based on differential polygonal blades of the present invention—an electrospinning nozzle with 6 differential polygonal blades, the outward opening angle of the differential polygonal blades is 45°, and the cone angle of the bell mouth is 45°. The spinning nozzle is specifically: the bell mouth 12 is located at the bottom of the cylindrical tube 11 (spinning downwards), the inner diameter of the junction of the bell mouth 12 and the cylindrical tube 11 is equal, and the connection is tight and smooth, which can Realize the unobstructed transportation of spinning fluid; the differential polygon blades 13 are evenly distributed on the top of the bell mouth 12 along the circumference; the inner diameter of the cylindrical tube 11 is 1.6mm, the length is 5mm, and the wall thickness is 0.2mm; the horn The mouth 12 has a height of 2mm, a cone angle of 45°, and a wall thi...

Embodiment 3

[0014] Embodiment three: Figure 4As shown, it is an embodiment of the trumpet-shaped electrospinning nozzle with differential polygonal blades on the top of the present invention used for large-scale nanofiber production——7 trumpet-shaped electrospinning nozzles with differential polygonal blades on the top are arranged in a linear array An electrospinning head, which contains 7 trumpet-shaped electrospinning nozzles with differential polygonal blades at the top, and the distance between the trumpet-shaped electrospinning nozzles is 20mm.

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Abstract

The invention relates to a horn-shaped electrospinning nozzle with differential polygon blades on the top and belongs to the technical field of nanofiber preparation. The horn-shaped electrospinning nozzle is formed by a cylinder tube, a horn mouth and the differential polygon blades; the differential polygon blades are evenly distributed at the top of the big opening of the horn mouth circumferentially, the horn mouth is located on the upper portion or the lower portion of the cylinder tube, the small opening of the horn mouth is equal to the joint of the cylinder tube in inner diameter withcontact and smooth connection, and barrier-free transportation of spinning fluid can be realized. The horn-shaped electrospinning nozzle with the differential polygon blades at the top is large in theinner diameter, so that plugging of needles can be favorably avoided, and electrospinning can be performed on high-concentration spinning solutions; the differential polygon blades at the top of thespinning nozzle has the function of stabilizing droplets, the area of spinning fluid level is enlarged, multiple spinning jets can be generated, and spinning production is increased; closed and controllable fluid supply can be realized through the tubular structure, and solvents are less prone to volatilization; the differential polygon blades at the top of the horn mouth are provided with tips, so that higher field intensity can be produced, and energy consumption can be reduced.

Description

technical field [0001] The invention relates to an electrospinning nozzle, in particular to a trumpet-shaped electrospinning nozzle whose top is a differential polygon blade, and belongs to the technical field of nanofiber preparation. Background technique [0002] Electrospinning is a method of preparing nanofibers by stretching a polymer solution or melt by an electric field force generated by a high-voltage DC power supply. It is currently one of the most effective techniques for preparing nanofibers. The solution electrospinning device can use a single metal capillary needle as a spinning head to realize spinning, such as the technologies disclosed in patents 200420020596.3 and 200410025622.6. However, due to the low yield of traditional single metal capillary electrospinning, it cannot meet the needs of industrialization and has become a bottleneck problem restricting its development. Therefore, Theron et al. arranged multiple metal capillary needles in a linear or rect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/00
CPCD01D5/0069
Inventor 刘延波田文军刘健
Owner WUHAN TEXTILE UNIV
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