Radial electrospinning nozzle based on differential polygonal blades

A radial and polygonal technology, applied in textile and papermaking, fiber processing, filament/thread forming, etc., can solve the problems of high energy consumption of needleless electrospinning technology, difficult fiber quality control, inconvenient cleaning, etc., to reduce static electricity. Spinning energy consumption, avoiding clogging problems, and the effect of closed and controllable liquid supply

Inactive Publication Date: 2018-11-27
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 radial electrospinning nozzle based on differential polygonal blades to solve the problem of needle blockage, inconvenient cleaning and needle-free electrospinning technology of traditional capillary needle-type electrospinning devices. Problems such as high energy consumption and difficulty in controlling fiber quality due to open liquid supply

Method used

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  • Radial electrospinning nozzle based on differential polygonal blades
  • Radial electrospinning nozzle based on differential polygonal blades
  • Radial electrospinning nozzle based on differential polygonal blades

Examples

Experimental program
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Embodiment 1

[0013] Embodiment one: figure 1 As shown, it is an embodiment of the radial electrospinning nozzle based on differential polygonal blades of the present invention—it has 2 radial blades, the number of differential polygonal blades on the top is 16, the expanded shape of the radial blades is rectangular, and the outward opening angle is The electrospinning nozzle at 0° is specifically: the radial spinneret 12 is located on the upper part of the cylindrical tube 11 (spinning upwards), the inner diameter of the radial spinneret is equal to the inner diameter of the cylindrical tube and the connection is tight and smooth , can realize the unobstructed transportation of spinning fluid; described radial spinneret 12 is made up of 2 radial blades that are evenly distributed along the circumference, and the expanded shape of radial blades is a rectangle, and there is a gap of 0.2 mm between the two radial blades. 16 differential polygonal blades are equally spaced on the top of each r...

Embodiment 2

[0014] Embodiment two: figure 2 and image 3As shown, it is an embodiment of the radial electrospinning nozzle based on the differential polygonal blades of the present invention—it has 4 radial blades, the number of differential polygonal blades at the top is 5, the expanded shape of the radial blades is trapezoidal, and the outward opening angle is 30° The electrospinning nozzle, specifically: the radial spinneret 12 is located at the bottom of the cylindrical tube 11 (spinning downward), the inner diameter of the radial spinneret is completely consistent with the inner diameter of the cylindrical tube and the connection is tight and smooth, The unobstructed transportation of the spinning fluid can be realized; the radial spinneret 12 is composed of 4 radial blades evenly distributed along the circumference, the radial blades expand into a trapezoidal shape, and 5 differential polygons are equally spaced on the top of each radial blade Blades; the radial blades and top dif...

Embodiment 3

[0015] Embodiment three: Figure 4 As shown, it is an embodiment of the radial electrospinning nozzle based on differential polygonal blades of the present invention—it has 4 radial blades, the number of differential polygonal blades at the top is 3, the radial blades are polygonal in shape, and the outward opening angle is 30° The electrospinning nozzle, specifically: the radial spinneret 12 is located at the bottom of the cylindrical tube 11 (spinning downward), the inner diameter of the radial spinneret is completely consistent with the inner diameter of the cylindrical tube and the connection is tight and smooth, The unobstructed transportation of the spinning fluid can be realized; the radial spinneret 12 is composed of 4 radial blades evenly distributed along the circumference, the radial blades are polygonal in shape, and 3 differential polygons are equally spaced on the top of each radial blade Blades; the radial blades and top differential polygonal blades have a thic...

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Abstract

The invention relates to a radial electrospinning nozzle based on a differential polygonal blade, belonging to the technical field of nanofiber preparation, which is composed of a cylindrical tube anda radial spinneret with a differential polygonal blade at the top. The radial spinneret is composed of a plurality of radial blades with the same structure evenly distributed along the circumference,a plurality of differential polygonal blades are equally spaced at the top of each radial blade, the radial spinneret is located at the upper or lower part of the cylindrical tube, and the inner diameter of the joint is equal, and the connection is tight and smooth, so that the barrier-free transport of the electrospinning fluid can be realized. The radial spinneret is composed of a plurality ofradial blades with the same structure uniformly distributed along the circumference. The radial electrospinning nozzle based on the differential polygon blade has a large inner diameter, is favorablefor avoiding the clogging problem, and can electrospin the high-concentration spinning solution; The radial spinneret can stabilize the droplets and produce multiple spinning jets, resulting in high spinning yield. The tubular structure can realize sealed and controllable liquid supply, and the solvent is not easy to volatilize. Differential polygon blades with tips can generate higher field strength and reduce energy consumption.

Description

technical field [0001] The invention relates to an electrospinning nozzle, in particular to a radial electrospinning nozzle based on differential polygonal blades, 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 rectangular arr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/00
CPCD01D5/0069D01D5/0092
Inventor 刘延波刘健任倩
Owner WUHAN TEXTILE UNIV
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