Thermal bubble spinning method and device for nano-fiber production

A nanofiber and electrospinning technology, which is applied in the field of air bubble electrospinning and devices used to produce nanofibers, can solve the problems of complex spinning mechanism and difficult production control, and achieve the effect of simple spinning mechanism and easy production control

Inactive Publication Date: 2010-06-09
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to invent a method and device for producing nanofibers that can solve the problem of complicated spinning mechanism and difficult actual production control due to many influencing factors.

Method used

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  • Thermal bubble spinning method and device for nano-fiber production
  • Thermal bubble spinning method and device for nano-fiber production
  • Thermal bubble spinning method and device for nano-fiber production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] refer to figure 1 , is the structural schematic diagram of Embodiment 1 and 2 of the present invention. The described hot-bubble electrospinning device that can be used to produce nanofibers includes a liquid storage pool 1 with an open top, and a high-voltage electrostatic generator 3 connects the liquid storage tank with a metal electrode. The solution or solution 4 in the pool 1 is connected, the receiving plate 8 is grounded through the grounding electrode 7, the guide roller 9 and the receiving curtain 6 which can rotate synchronously are arranged above the liquid storage pool 1, and the receiving plate is arranged above the receiving curtain 6 8. A heating device 2 is installed at the bottom of the reservoir 1 .

[0021] First, the mass percentage is respectively 35% polyvinylpyrrolidone and 65% industrial absolute alcohol and stirs for 2.5 hours, then it is poured into the reservoir 1; open the heating device 2, and the temperature of the polyvinylpyrrolidone so...

Embodiment 2

[0023] refer to figure 1 , is the structure diagram of Embodiment 1 and 2 of the present invention, wherein the polyvinyl alcohol solution is composed of 6% polyvinyl alcohol and 94% industrial pure water in mass percentage, the stirring time is 12 hours, the temperature is 100 ° C, and the high pressure is adjusted Electrostatic generator 3 to 15 kV. Using exactly the same process steps as in Example 1, nanofibers were obtained.

Embodiment 3

[0025] refer to figure 2 , is a schematic diagram of the structures of Embodiments 3 and 4 of the present invention. The above-mentioned hot air bubble electrospinning device that can be used to produce nanofibers is composed of the gas guide rod 5 and all the components in the structure of Embodiment 1. Except for the gas guiding rod 5, the structure of embodiment 2 is completely the same as that of embodiment 1. The bottom surface of the liquid storage tank 1 is provided with a gas guiding rod 5, the purpose of which is to concentrate the gas in the solution or solution and prevent the adhesion of several liquid bubbles.

[0026] Using exactly the same process steps as in Example 1, wherein the polyacrylonitrile solution is composed of 13% polyacrylonitrile and 87% N-dimethylformamide in mass percentage, the stirring time is 48 hours, and the temperature is 150°C , adjust the high-voltage electrostatic generator from 3 to 50 kV. Using exactly the same process steps as in ...

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Abstract

A hubble-bubble spin method and apparatus for producing nano fibre is disclosed. The method includes the following steps: a spinning solution or dissolving body is poured in a liquid storage pool after stirring; a large amount of rule vacuole appear on the liquid level after heating, the high-pressure electrostatic generator polarization vacuole is switched on, a jet current spurts out at the topof the vacuole to shoot toward the receiving polar plate, and deposits at a receiving curtain between the solution liquid level and the receiving polar plate. The apparatus is composed of a liquid storage pool, a heating mechanism, a high-pressure electrostatic generator, the receiving polar plate, an orienting roll, an earth electrode and the receiving curtain, wherein, the heating mechanism is at the bottom of the liquid storage pool, the high-pressure electrostatic generator is connected to the solution or dissolving body in the liquid storage pool the metallic electrode, thereby forming apositive pole, the receiving polar plate is earthed through the earth electrode to form a negative pole, and the receiving polar plate, the orienting roll and the receiving curtain are provided abovethe liquid storage pool. The invention possesses the advantages of simple spinning mechanism, and being easy to carry out actual production control.

Description

technical field [0001] The invention relates to a bubble electrospinning method and device for producing nanofibers. Background technique [0002] Bubble electrospinning is developed based on the high-speed jetting of charged polymer solutions or solutions under high-voltage electrostatic fields. The jet stream solvent volatilizes, solidifies and finally deposits on the collecting plate to form a fiber mat or other forms of fiber structures. [0003] Experiments have proved that the surface tension and viscosity of the spinning solution or solution are important factors affecting the production process of air bubble electrospinning. The surface tension coefficient of the liquid is negatively correlated with temperature, and the relationship is approximately linear, that is, the higher the temperature, the higher the surface tension coefficient. Small; in the case of ordinary spinning, the higher the viscosity, the larger the fiber diameter. Sometimes in order to improve th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D13/00D01D5/00
Inventor 何吉欢杨芹寿大华
Owner DONGHUA UNIV
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