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Electrostatic spinning device of continuous nanometer fiber net and method for preparing nanometer fiber net

A nanofiber web and electrospinning technology is applied in the fields of preparing nanofiber webs, electrospinning devices for continuous nanofiber webs, and spinning devices. The effect of weakening mutual interference and reducing the contact area

Inactive Publication Date: 2011-04-27
XI'AN POLYTECHNIC UNIVERSITY
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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 provide a continuous nanofiber web electrospinning device, which solves the problem that the quality of the nanofiber web obtained by the existing device is relatively single, and the diameter uniformity of the nanofiber is poor

Method used

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  • Electrostatic spinning device of continuous nanometer fiber net and method for preparing nanometer fiber net
  • Electrostatic spinning device of continuous nanometer fiber net and method for preparing nanometer fiber net
  • Electrostatic spinning device of continuous nanometer fiber net and method for preparing nanometer fiber net

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Polyacrylonitrile (PAN) (Mw=70,000 g / mol) was dissolved in N,N-dimethylformamide (DMF) to prepare a spinning solution with a concentration of 13 wt%. Under the environment of room temperature and relative humidity being 60%, this spinning solution is injected in the syringe 11, and there are 7 syringes 11 in total, which are respectively connected by 7 metal needles 9 on the PTFE catheter 10 and the rubber plate 8, as figure 2 As shown, the metal needles 9 are arranged in a cone shape along the rotation direction of the endless mesh belt 6, the cone angle is 60°, and the distance between adjacent metal needles 9 is 6cm. Start the driving motor and the heating pipe 5 to allow the endless mesh belt 6 to rotate at a speed of 12m / min, and keep the temperature of the endless mesh belt 6 at 30°C. Turn on the DC high-voltage generator 2, control the voltage to 20kV, adjust the receiving distance between the metal needle 9 and the endless mesh belt 6 to 120mm, and the electros...

Embodiment 2

[0040] Polyacrylonitrile (PAN) (Mw=70,000 g / mol) was dissolved in N,N-dimethylformamide (DMF) to prepare a spinning solution with a concentration of 13 wt%. At room temperature and a relative humidity of 40%, the spinning solution is injected into the syringe 11. There are 11 syringes 11 in total, which are respectively connected by 11 metal needles 9 on the PTFE catheter 10 and the rubber plate 8. The metal needles 9 presents a conical arrangement along the rotation direction of the endless mesh belt 6, the cone angle is 60°, and the distance between adjacent metal needles 9 is 4cm. Start the driving motor and the heating pipe 5 to allow the endless mesh belt 6 to rotate at a speed of 6 m / min, and keep the temperature of the endless mesh belt 6 at 200° C. Turn on the DC high-voltage generator 2, control the voltage to 15kV, adjust the receiving distance between the metal needle 9 and the endless mesh belt 6 to 50mm, and the electrospinning jet will deposit on the surface of t...

Embodiment 3

[0042] Polyacrylonitrile (PAN) (Mw=70,000 g / mol) was dissolved in N,N-dimethylformamide (DMF) to prepare a spinning solution with a concentration of 13 wt%. At room temperature and a relative humidity of 70%, the spinning solution is injected into the syringe 11. There are 3 syringes 11, which are respectively connected by 3 metal needles 9 on the PTFE catheter 10 and the rubber plate 8. The metal needles 9 are arranged in a cone shape along the rotation direction of the endless mesh belt 6, the cone angle is 60°, and the distance between adjacent needles is 12cm. Start the driving motor and the heating pipe 5 to allow the endless mesh belt 6 to rotate at a speed of 60 m / min, and keep the temperature of the endless mesh belt 6 at 300° C. Turn on the DC high-voltage generator 2, control the voltage to 50kV, adjust the receiving distance between the metal needle 9 and the endless mesh belt 6 to 300mm, and the electrospinning jet will deposit on the surface of the endless mesh be...

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Abstract

The invention discloses an electrostatic spinning device of a continuous nanometer fiber net. The device comprises a rubber plate, wherein a ring-shaped net belt is arranged under the rubber plate, needle holes are arranged on the surface, the device further comprises a spraying component, the spraying component comprises a metal probe whose surface is clamped with a metal clamp, a PTFE liquid guiding pipe and an injector which are connected in turn, the metal clamp is connected with an anode of a direct current high-voltage generator, the injector is clamped on a micro-injection pump, and the metal probe is inserted in the corresponding needle holes. The method of the invention for preparing the continuous nanometer fiber net comprises the following steps: injecting spinning solution into the injector, opening the micro-injection pump, enabling the spinning solution in the injector to flow out of the injector, forming a ball-shaped liquid drop on the top end of the metal probe, starting the direct current high-voltage generator, spraying jet flow from the ball-shaped liquid drop, and spraying to the ring-shaped net belt to obtain the continuous nanometer fiber net. The electrostatic spinning device of the invention solves the problems that the nanometer fiber nets obtained by existing devices have more single quality, and the diameter evenness of nanometer fiber is wore.

Description

technical field [0001] The invention belongs to the technical field of textile equipment, and relates to a spinning device, in particular to an electrospinning device for continuous nanofibrous webs, and also relates to a method for preparing nanofibrous webs using the device. Background technique [0002] At present, the main methods for preparing nanofibers include stretching method, template synthesis method, microphase separation method, self-assembly method and electrospinning method. Changing the properties of the solution itself has attracted increasing attention. The so-called electrospinning refers to the flow and deformation of a charged polymer solution or melt in a high-voltage electric field, and then solidifies by solvent volatilization or cooling of the melt, and finally obtains a fibrous substance. Compared with the traditional mechanical draft spinning, electrospinning is more suitable for the preparation of ultrafine fibers, because the fiber elongation de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H3/16D01D5/00D01D13/02
Inventor 孙润军刘呈坤来侃姚穆张娓华王耀武
Owner XI'AN POLYTECHNIC UNIVERSITY
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