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Spray nozzle of nanofiber mass production device

A nanofiber, mass production technology, applied in fiber processing, textile and papermaking, filament/thread forming, etc., can solve the problems of difficult cleaning, easy blocking, easy volatilization of organic solvents, etc., achieve uniform texture, overcome easy blocking, The effect of improving production efficiency

Inactive Publication Date: 2017-05-10
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the existing research on mass production technology at home and abroad is limited, and all of them are single-nozzle type or no-nozzle type. Inevitably, there are inherent limitations of these two methods respectively: the nozzle-type electrospinning mass production technology is suitable for water and organic solvent compatibility, However, it has the disadvantages of being easy to block and difficult to clean, and the yield is lower than that of the method without nozzles.
The non-nozzle method is only suitable for water-soluble or low-volatility organic solvent materials because the electrospinning solution is relatively open during the preparation process, and the organic solvent is easy to volatilize.

Method used

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  • Spray nozzle of nanofiber mass production device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The structure of the nozzle of the nanofiber mass production device is: the convex part of the polytetrafluoroethylene convex porous plate is covered with a fluorine rubber sealing pressure ring, which is placed on the open nozzle end of the stainless steel nut nozzle body, and its flat part faces the stainless steel nut nozzle The threaded end of the body; the large mouth end and the small mouth end of the stainless steel hollow T-shaped outer spiral tube each have an outer spiral, which can be connected with the threaded end of the stainless steel nut nozzle body and the connection port of the stainless steel liquid tank in a spiral manner, so that the PTFE The vinyl convex porous plate is tightly fixed between the stainless steel nut nozzle body and the stainless steel hollow T-shaped outer spiral tube, and at the same time, the spinning solution pushed through the liquid inlet of the stainless steel liquid tank by the air pump or electric pump can pass through the sta...

Embodiment 2

[0028] The structure of the nozzle of the nanofiber mass production device is the same as that in Example 1, and the diameter of the spinneret pores on the surface of the convex part of the polytetrafluoroethylene convex porous plate 1 is 0.1 mm. The electrospinning solution is 10% polyethylene oxide aqueous solution, the air pump propulsion speed is 0.1 mL / min, the spinning voltage is 20 Kv, and the collection distance is 16 cm. Five nozzles work at the same time, the average diameter of the prepared nanofibers is 300nm, the size of the nanofiber film obtained in 15 minutes is 40×40cm, and the thickness is 150μm.

Embodiment 3

[0030] The structure of the nozzle of the nanofiber mass production device is the same as in Example 1, the diameter of the spinneret pores on the surface of the convex part of the polytetrafluoroethylene convex porous plate 1 is 0.05 mm, and the electrospinning solution is 10% polystyrene dichloromethane solution, the electric pump propulsion speed is 0.2mL / min, the spinning voltage is 15Kv, and the collection distance is 15cm. The average diameter of the prepared nanofibers is 300nm under the working mode of a single nozzle, the size of the nanofiber film obtained in 20 minutes is 13×17cm, and the thickness is 90μm.

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Abstract

The invention provides a spray nozzle of a nanofiber mass production device. The spray nozzle comprises a convex polytetrafluoroethylene perforated plate, stainless steel spray nozzle body fixing nuts, a stainless-steel hollow T-shaped outer spiral pipe, a fluorous rubber sealing pressing ring and a stainless steel liquid tank; a spinning solution passing through a liquid inlet of the liquid tank under driving of an air pump or electric pump can sequentially pass through the hollow T-shaped outer spiral pipe and the stainless steel spray nozzle body fixing nuts and then reach the convex perforated plate, multiple liquid outlet points are formed in jetting pores densely distributed on the perforated plate to form multiple Taylor cones, and the Taylor cones are drawn under the action of a high-voltage electric field and cured into filaments along with volatilization of a solvent. According to the spray nozzle, nano-scale fibers can be continuously and stably prepared, and the different yield requirements can be met by selecting the working ways adopting a single spray nozzle or multiple spray nozzles. The spray nozzle is not only suitable for an electrospinning solution prepared from a waterborne solvent, but also suitable for an electrospinning solution prepared from an organic solvent and is a universal accessory capable of being flexibly applied to an electrostatic spinning technology.

Description

technical field [0001] The invention describes a spray head of a nanofiber mass production device, which can continuously and stably prepare a large amount of nanofibers, and is compatible with water and organic solvents, breaking the limitation of raw materials for preparing nanofibers. Background technique [0002] Electrospinning is a technology that stretches a polymer solution by means of a high-voltage electric field to prepare nanofibers with large specific surface area, high porosity, large aspect ratio, high surface energy, and high activity. Compared with other nanofiber preparation methods, this method has the advantages of being more convenient, simple, and flexible, and can also compound a large number of therapeutic drugs, antibacterial substances, functional groups, and even living cells into the fiber material. , so it has extremely high application value in the fields of biomedicine, biosensing, nanoelectronics, optoelectronic devices, catalysis, etc., and h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/00
CPCD01D5/0069
Inventor 许茜曹卫鑫菅宁歌
Owner SOUTHEAST UNIV
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