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Multi-spraying-nozzle electrostatic spinning device with controllable spinning environment

An electrospinning and multi-nozzle technology, which is applied in the direction of spinneret assemblies, textiles and papermaking, filament/thread forming, etc., can solve problems such as electrostatic field interference of spinnerets, and achieve improved spinning efficiency and good industrialization The effect of production application prospects

Inactive Publication Date: 2013-11-27
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a multi-nozzle electrospinning device with controllable spinning environment to solve the problems of electrostatic field interference between adjacent spinnerets and improve the existing electrospinning method , the constant temperature and humidity box is added to solve the requirements for environmental temperature and humidity in the spinning production process, and the three-dimensional multi-nozzle spinneret can be used to adjust the position of each spinneret on the spinneret according to the three-dimensional spatial distribution structure. The location, quantity and distance between the spinneret and the receiving surface greatly improve the spinning efficiency and can be applied to industrial production of large-area nanofiber membrane materials

Method used

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  • Multi-spraying-nozzle electrostatic spinning device with controllable spinning environment
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  • Multi-spraying-nozzle electrostatic spinning device with controllable spinning environment

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Experimental program
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Effect test

Embodiment 1

[0039] It is worth mentioning that the present invention carries out electrospinning of aqueous polymer solution, and its spinning conditions are: spinning environment temperature is 25℃; spinning environment humidity is 55%RH; spinning solution advance speed is 16.0μL / min; The number of spinnerets is 10, the diameter of the spinneret capillary holes is 0.1mm, the height of the metal nozzle is 10mm, and the spinneret spacing is 1cm, distributed in a longitudinal row, perpendicular to the moving direction of the receiving track ; The applied electrostatic voltage is 45~75kV; the distance between the spinneret and the receiving surface is 150mm; the receiving surface is aluminum foil; the moving speed of the receiving crawler is 100mm / min; the horizontal moving speed of the receiving surface is 100mm / min; the horizontal moving distance of the receiving surface It is 200mm.

[0040] The spinning process is as follows: adding a 10wt% polyoxyethylene (PEO) aqueous solution with a wei...

Embodiment 2

[0043] It is worth mentioning that the present invention carries out electrospinning of aqueous polymer solution, and its spinning conditions are: spinning environment temperature is 35°C; spinning environment humidity is 50%RH; spinning solution advancing speed is 18.0μL / min; the number of spinnerets is 20, the pore diameter of the spinneret is 0.2mm, the height of the metal nozzle is 5-15mm, and the distance between the spinnerets is 1cm, distributed in two longitudinal rows, the distance between each row 3cm, and perpendicular to the moving direction of the receiving track; the applied electrostatic voltage is 60-100kV; the distance between the spinneret and the receiving surface is 150mm; the receiving surface is non-woven; the moving speed of the receiving crawler is 100mm / min; the receiving surface moves horizontally The speed is 100mm / min; the horizontal movement distance of the receiving surface is 200mm.

[0044] The spinning process is as follows: adding a polyvinyl al...

Embodiment 3

[0047] It is worth mentioning that the present invention carries out electrospinning of organic phase polymer solution, and its spinning conditions are: spinning environment temperature is 45℃; spinning environment humidity is 50%RH; spinning solution advancing speed is 16.0μL / min; the number of spinnerets is 50, the diameter of the spinneret capillary is 0.2mm, the height of the metal nozzle is 5-25mm, the spinneret spacing is 1cm, distributed in 5 columns, the distance between each column 2cm, and perpendicular to the moving direction of the receiving track; the applied electrostatic voltage is 55~85kV; the distance between the spinneret and the receiving surface is 200mm; the receiving surface is aluminum foil; the moving speed of the receiving crawler is 150mm / min; the horizontal moving speed of the receiving surface is 100mm / min; the horizontal movement distance of the receiving surface is 200mm.

[0048] The spinning process is as follows: the N,N-dimethylformamide (DMF) s...

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Abstract

The invention relates to a multi-spraying-nozzle electrostatic spinning device with the controllable spinning environment. The multi-spraying-nozzle electrostatic spinning device comprises a spinning environment control unit, an electrostatic spinning unit and a spinning connecting unit. An air current stabilization cover is arranged on the top of a spinning box body; an air suction and solvent recovery device is arranged at the bottom of the spinning box body; a constant-temperature and constant-humidity system is arranged in the spinning box body; a spinning liquid material barrel, a micro spinning solvent propelling device, a material barrel fixing support and an electrostatic generator are installed on the top of the spinning box body; the spinning solvent in the material barrel enters a three-dimensional multi-spraying-nozzle spinneret plate through a tube; a spinneret plate lifting device penetrates through the air current stabilization cover and is connected with the three-dimensional multi-spraying-nozzle spinneret plate; a continuous fiber mat receiving device and a horizontal receiving surface moving device are arranged below the spinneret plate. Due to the multi-spraying-nozzle electrostatic spinning device with the controllable spinning environment, an existing electrostatic spinning method is improved, the sealed spinning box body is additionally arranged to improve the electrostatic spinning environment, and accordingly requirements for temperature and humidity in the spinning process are satisfied; meanwhile, due to the adoption of the three-dimensional multi-spraying-nozzle spinneret plate, spinning efficiency is greatly improved and the multi-spraying-nozzle electrostatic spinning device with the controllable spinning environment can be applied to industrial production.

Description

Technical field [0001] The invention relates to an electrostatic spinning device, in particular to a device that improves the electrostatic spinning process by adjusting the spinning environment, and uses a three-dimensional multi-nozzle spinneret to efficiently obtain ultrafine fiber non-woven fabric membranes and apply them to mass production . Background technique [0002] Electrospinning is a very effective method for preparing ultrafine fibers. The principle is that non-Newtonian fluid forms a Taylor cone structure under the action of a high-voltage electrostatic field and further generates jets to form fibers with a diameter in the micron or even nanometer range. Most of the electrospinning equipment in the existing laboratory uses a single spinneret with an ejection efficiency of 0.1 to 1.0 g / h, while the ultrafine fibers prepared by the traditional electrospinning method are similar to non-woven fabrics. Because of the small area and thin thickness of the obtained fiber ...

Claims

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Application Information

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IPC IPC(8): D01D5/00D01D4/02
Inventor 王雪芬陈彦模周哲杨寅李雄
Owner DONGHUA UNIV
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