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Spray nozzle capable of realizing mass production of nanometer fibers in electrostatic spinning method

An electrospinning method and nanofiber technology, which is applied in the field of nozzles that can realize the mass production of nanofibers by electrospinning method, can solve the problems that mass production cannot be realized, and achieve the effect of simple structure, uniform texture and low cost

Inactive Publication Date: 2014-07-09
SOUTHEAST UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these technologies still cannot realize the continuous and stable production of nanofibers well. Therefore, mass production cannot be achieved to meet the demand for large-scale application of nanofibers.

Method used

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  • Spray nozzle capable of realizing mass production of nanometer fibers in electrostatic spinning method
  • Spray nozzle capable of realizing mass production of nanometer fibers in electrostatic spinning method
  • Spray nozzle capable of realizing mass production of nanometer fibers in electrostatic spinning method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A conical nozzle body 4 with a taper of 1:3 made of plastic is used, a flexible porous filter element 1 is a sponge, and a nylon cloth with a pore diameter of 0.01 mm is used as a microporous coating 2 . The electrospinning solution is 10% polyethylene oxide aqueous solution, the air pump propulsion speed is 0.1mL / min, the spinning voltage is 15Kv, and the collection distance is 15cm. Working with a single nozzle, the average diameter of the prepared nanofibers is 200nm, and the nanofiber film obtained in 20 minutes has a size of 10×15cm and a thickness of 75μm.

Embodiment 2

[0025] A tapered nozzle body 4 with a taper of 1:10 made of plastic material is used, a flexible porous filter element 1 is a sponge, and a nylon cloth with a pore diameter of 0.01 mm is used as a microporous coating 2 . The electrospinning solution is 10% polyethylene oxide aqueous solution, the air pump propulsion speed is 0.1mL / min, the spinning voltage is 20Kv, and the collection distance is 16cm. 16 nozzles work in a matrix of 4×4 arranged in pairs with an interval of 1cm. The average diameter of the prepared nanofibers is 300nm. The nanofiber film obtained in 15 minutes has a size of 40×40cm and a thickness of 150μm.

Embodiment 3

[0027] A conical nozzle body 4 with a taper of 1:20 made of metal is used, the flexible porous filter element 1 is soft polyurethane foam, and nylon cloth with a pore diameter of 0.1 mm is used as the microporous coating 2 . 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. Working with a single nozzle, the average diameter of the prepared nanofibers is 300nm, the size of the nanofiber film obtained in 20 minutes is 13×17cm, and the thickness is 90μm.

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Abstract

A nozzle capable of mass producing nanofibers by electrospinning, comprising a flexible porous filter element, a microporous coating, a microporous coating pressing ring and a cone-shaped nozzle body. The electrospinning solution passes through the flexible porous filter element under the pressure of the air pump or electric pump to form multiple liquid outlet points, and then passes through the microporous coating to adjust the droplet size to form multiple Taylor cones, which are stretched under the action of a high-voltage electric field. And as the solvent volatilizes, it solidifies into silk. This type of nozzle can continuously and stably prepare nano-scale fibers. The working efficiency of a single nozzle is 10-100 times higher than that of a traditional single nozzle. Fiber mass production requirements. The nozzle is suitable for both water-based solvents and non-aqueous organic solvents for electrospinning solutions. It is a universal accessory that can be flexibly applied to electrospinning technology. It can be used with conventional electrospinning devices without special Equipment, low cost.

Description

technical field [0001] The invention describes a nozzle that can realize the mass production of nanofibers by electrospinning. The nozzle can be used in conjunction with conventional electrospinning devices to continuously and stably produce nanofibers, greatly improve the yield of nanofibers, and realize the production of nanofibers. Mass production. 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, biosensin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D4/02D01D5/00
Inventor 许茜叶小炯顾忠泽
Owner SOUTHEAST UNIV