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Novel centrifugal melt electrostatic spinning device

A new type of melt electrospinning technology, applied in textiles and papermaking, filament/thread forming, fiber processing, etc., can solve the problems of increasing spinning temperature and unsatisfactory results, and achieve industrial production , the effect of improving spinning efficiency

Active Publication Date: 2013-07-24
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In solution electrospinning, since the concentration of the spinning solution is very small, the solvent in it needs to be volatilized, so the efficiency of solution electrospinning is lower than that of melt electrospinning, but the diameter of the fiber obtained by melt electrospinning is larger, Generally micron-scale, in order to obtain nano-scale fibers, researchers have obtained nano-scale fibers through a series of measures such as increasing the electric field force, increasing the spinning temperature, and blowing air, but the results obtained are not very satisfactory.

Method used

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  • Novel centrifugal melt electrostatic spinning device
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] figure 1 and figure 2 , adjust the distance between the nozzle (11) and the collection cylinder (3) to be 17 cm, and put 30 grams of polypropylene into the feeding chamber (9). Turn on the power supply of the heating rod (6) and the electric heating plate (4), when the temperature of the feeding chamber (9) and the spray chamber (5) both reach 230°C, keep the heat for 10 minutes, then open the valve (10), and the polypropylene The melt flows into the spray chamber (5), and a voltage of 20KV is applied between the nozzle (11) and the collecting cylinder (3), and the speed of the motor (13) is gradually adjusted from 0 to 13000 rpm, and the high-speed rotating The spinning nozzle (5) spins the melt and falls on the collecting cylinder (3). After the spinning is finished, the power is turned off, and the spun filaments are collected. After measurement, the fiber diameter is 200-600 nanometers.

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Abstract

The invention discloses a novel centrifugal melt electrostatic spinning device and belongs to the field of electrostatic spinning. The whole set of the device comprises a supporting and power system, a material supplying and temperature controlling system, a spinning sprayer and a collection system. The novel centrifugal melt electrostatic spinning device utilizes the common effect of high-voltage electric field force and high-speed centrifugal force, so that a nano superfine fiber is spun by using a macromolecular melt; materoals can be discontinuously added into a charging room to realize continuous spinning of the whole device; and a plurality of layers of shower nozzles not only can greatly improve the spinning efficiency, but also can obtain a fiber membrane with the certain width, being good for realizing industrial production.

Description

technical field [0001] The invention relates to a novel centrifugal melt electrostatic spinning device, which belongs to the field of electrostatic spinning. Background technique [0002] With the rapid development of nanotechnology, electrospinning, as a method and technology for directly preparing nanofibers, has received more and more attention and research. Electrospinning includes solution electrospinning and melt electrospinning. In solution electrospinning, since the concentration of the spinning solution is very small, the solvent in it needs to be volatilized, so the efficiency of solution electrospinning is lower than that of melt electrospinning, but the diameter of the fiber obtained by melt electrospinning is larger, Generally micron-scale, in order to obtain nano-scale fibers, researchers have obtained nano-scale fibers through a series of measures such as increasing the electric field force, increasing the spinning temperature, and blowing air, but the result...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/00D01D5/18
Inventor 刘勇王昭春向伟陈文聪邢长民刘月星王克俭陈国华李松年
Owner BEIJING UNIV OF CHEM TECH
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