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Free-surface coaxial centrifugal electrostatic spinning spinneret

An electrospinning and spinneret technology, which is applied in textile and papermaking, filament/thread forming, fiber processing, etc., can solve the problems of complex process influencing factors, blockage of nozzle holes, and difficulty in cleaning equipment.

Active Publication Date: 2018-08-10
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to improve the existing problems of coaxial electrospinning, such as complex process influencing factors, difficult device cleaning, easy to cause nozzle hole clogging, etc., to provide a free spinning process that is easy to clean, high in production efficiency, and has a more stable spinning process. The surface coaxial centrifugal electrospinning spinneret uses the surface tension of the spinning liquid in different channels in the device to form composite nanofibers with a skin-core structure

Method used

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  • Free-surface coaxial centrifugal electrostatic spinning spinneret
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Experimental program
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Effect test

Embodiment 1

[0045] Such as Figure 1-Figure 3 As shown, a free surface coaxial centrifugal electrospinning spinneret includes 3 spinning cavities composed of 4 laminations, respectively the first spinning cavity 12, the second spinning cavity 11, the third spinning cavity The wire cavity 10 and the laminations are connected by connecting posts 14 . The stainless steel spinning disk can rotate at high speed along the output shaft of the motor, and the rotation speed is 3000r / min.

[0046] The thickness H0 of the first lamination 1 and the fourth lamination 4 is 0.2mm; the thickness H1 of the second lamination 2 and the third lamination 3 is 0.2mm; the height H2 of the first spinning cavity 12 is 1mm, the third The height of the spinning chamber 10 is 1mm; the height H3 of the second spinning chamber 11 is 2mm; the overall thickness H4 of the spinning disk represented from the top of the first lamination 1 to the bottom of the fourth lamination 4 is 4.8mm. The height between the outer edg...

Embodiment 2

[0054] Such as Figure 1-Figure 3 As shown, a free surface coaxial centrifugal electrospinning spinneret includes 3 spinning cavities composed of 4 laminations, respectively the first spinning cavity 12, the second spinning cavity 11, the third spinning cavity The wire cavity 10 and the laminations are connected by connecting posts 14 . The stainless steel spinning disk can rotate at high speed along the output shaft of the motor, and the rotation speed is 4000r / min.

[0055] The thickness H0 of the first laminate 1 and the fourth laminate 4 is 0.1mm; the thickness H1 of the second laminate 2 and the third laminate 3 is 0.3mm; the height H2 of the first spinning cavity 12 is 2mm, and the third The height of the spinning chamber 10 is 2mm; the height H3 of the second spinning chamber 11 is 2mm; the overall thickness H4 of the spinning disc represented from the top of the first lamination 1 to the bottom of the fourth lamination 4 is 6.8mm. The height between the outer edge of...

Embodiment 3

[0063] Such as Figure 1-Figure 3 As shown, a free surface coaxial centrifugal electrospinning spinneret includes 3 spinning cavities composed of 4 laminations, respectively the first spinning cavity 12, the second spinning cavity 11, the third spinning cavity The wire cavity 10 and the laminations are connected by connecting posts 14 . The stainless steel spinning disk can rotate at high speed along the output shaft of the motor, and the rotation speed is 5000r / min.

[0064] The thickness H0 of the first lamination 1 and the fourth lamination 4 is 1.0mm; the thickness H1 of the second lamination 2 and the third lamination 3 is 0.3mm; the height H2 of the first spinning chamber 12 is 1.5mm, the second The height of the three spinning chambers 10 is 1.5 mm; the height H3 of the second spinning chamber 11 is 3.0 mm; the overall thickness H4 of the spinning disc represented from the top of the first lamination 1 to the bottom of the fourth lamination 4 is 8.6 mm. mm, the height...

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Abstract

The invention discloses a free-surface coaxial centrifugal electrostatic spinning spinneret which comprises a first liquid inlet cavity, a second liquid inlet cavity, a first spinning cavity, a secondspinning cavity, a third spinning cavity, communication channels, a motor and connection columns. A first folding sheet and a second folding sheet are arranged at intervals to form the first spinningcavity; the second folding sheet and a third folding sheet are arranged at intervals to form the second spinning cavity; the third folding sheet and a fourth folding sheet are arranged at intervals to form the third spinning cavity; the first spinning cavity and the third spinning cavity are arranged on the upper side and the lower side of the second spinning cavity, and the communication channels are fixed onto the second folding sheet and the third folding sheet; the first folding sheet and the second folding sheet are connected with the third folding sheet and the fourth folding sheet by the connection columns. The free-surface coaxial centrifugal electrostatic spinning spinneret has the advantages that the problems of complicated influence factors of common coaxial pinhead electrostatic spinning processes, difficulty in cleaning devices, easiness in blocking spray orifices and the like can be solved by the aid of the free-surface coaxial centrifugal electrostatic spinning spinneret; the spinning efficiency and the spinning stability can be improved, and composite fiber materials with skin-core structures can be effectively prepared by the aid of the free-surface coaxial centrifugal electrostatic spinning spinneret on a large scale.

Description

technical field [0001] The invention relates to the field of preparation of skin-core structure nanofiber materials, in particular to a free-surface coaxial centrifugal electrostatic spinning spinneret device. Background technique [0002] In recent years, nanofibers have made great progress with the development of nanotechnology. The usual methods for preparing nanofibrous materials include phase separation, self-assembly, template synthesis, two-component extrusion, and electrospinning techniques. Among them, electrospinning technology is currently the only method that can directly and continuously prepare polymer micro- and nano-fibers. At the same time, because the size of the prepared nano-fibers is easy to control, it can easily realize the preparation of multi-level structure ultra-fine fibers. In addition, composite nanofibers can also be prepared by composite spinning with polymers. So far, electrospinning has successfully prepared more than 100 kinds of polymer n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/00
CPCD01D5/0069
Inventor 严玉蓉邓玲利杨欣卉赵耀明朱锐钿张鹏张文韬杨苏邯邹飞
Owner SOUTH CHINA UNIV OF TECH
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