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Melt electrospinning method based on reverse enhanced composite electric field and product thereof

A melt electrospinning and reinforced compounding technology, which is applied in textiles and papermaking, filament/thread forming, fiber treatment, etc., can solve the problems of insufficient fiber web strength and poor bulkiness

Inactive Publication Date: 2019-06-21
SHANGHAI UNIV OF ENG SCI
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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 solve the problem of insufficient strength and poor bulkiness of the fiber web produced by the electrospinning method in the prior art, and to provide a melt electrospinning method and its products based on the reverse enhanced composite electric field

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] In the melt electrospinning method based on the reverse enhanced composite electric field, an auxiliary electrode is added between the melt electrospinning nozzle and the receiving device, and the potential of the auxiliary electrode is higher than the potential at the point without the auxiliary electrode. The potential above the nozzle and the potential of the receiving device;

[0028]Spinning process parameters: the spinning distance is 7cm, the distance between the auxiliary electrode and the nozzle is 1 / 2 of the spinning distance, the nozzle is grounded, the voltage of the receiving device is -36kV when spinning, and the voltage of the auxiliary electrode is 5kV when spinning. The ambient temperature between the nozzle and the auxiliary electrode is 40°C, and the temperature of the nozzle is 300°C;

[0029] The auxiliary electrode is a ring with a diameter of 30mm;

[0030] The product made by the melt electrospinning method based on the above reverse enhanced co...

Embodiment 2

[0032] Based on the melt electrospinning method of reverse enhanced composite electric field, two auxiliary electrodes are added between the melt electrospinning nozzle and the receiving device. The potential above the nozzle and the potential of the receiving device;

[0033] Spinning process parameters: the spinning distance is 10cm, the minimum distance between the auxiliary electrode and the nozzle is 1 / 5 of the spinning distance, the nozzle is grounded, the voltage of the receiving device during spinning is -20kV, and the voltage of the auxiliary electrode during spinning is 5kV and 10kV, the ambient temperature between the nozzle and the auxiliary electrode is 50°C, and the temperature of the nozzle is 300°C;

[0034] The auxiliary electrode is a ring, the diameter of the ring is 40mm, the two auxiliary electrodes are arranged along the spinning direction, the distance between them is 3cm, and the voltage gradually increases;

[0035] The product made by the melt electr...

Embodiment 3

[0037] In the melt electrospinning method based on the reverse enhanced composite electric field, an auxiliary electrode is added between the melt electrospinning nozzle and the receiving device, and the potential of the auxiliary electrode is higher than the potential at the point without the auxiliary electrode. The potential above the nozzle and the potential of the receiving device;

[0038] Spinning process parameters: the spinning distance is 15cm, the distance between the auxiliary electrode and the nozzle is 1 / 6 of the spinning distance, the nozzle is grounded, the voltage of the receiving device is -36kV when spinning, and the voltage of the auxiliary electrode is 15kV when spinning. The ambient temperature between the nozzle and the auxiliary electrode is 60°C, and the temperature of the nozzle is 300°C;

[0039] The auxiliary electrode is a hollow cylinder with a diameter of 40mm and a height of 1 / 3 of the spinning distance;

[0040] The product made by the above m...

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Abstract

The invention relates to a melt electrospinning method based on a reverse enhanced composite electric field and a product thereof. The method comprises the following steps that one or more auxiliary electrodes are additionally arranged between a melt electrospinning nozzle and a receiving device; the electric potential of the auxiliary electrodes is higher than that of a nozzle and that of the receiving device; and the potential of the auxiliary electrodes is higher than that of the position where no auxiliary electrodes are added. The product prepared by the method is a fiber mesh, and the thickness of the fiber mesh is 4-12 times of that of a fiber mesh prepared by an ordinary non-composite electric field spinning method based on the same area and weight. After the auxiliary electrodes are added, the stretching effect of the electric field on melt jet flow can be enhanced, fiber small in fineness degree can be obtained at the same spinning temperature, an inverse composite electric field is formed in the spinning process, the fiber stays near the nozzle for a long time and rotates inside the auxiliary electrodes, and the more fluffy fiber mesh is formed.

Description

technical field [0001] The invention belongs to the technical field of melt electrospinning, and relates to a melt electrospinning method based on a reversely enhanced composite electric field and its products, in particular to a melt electrospinning method for reversely enhanced composite electric field that increases the bulkiness of a fiber web The silk method and its products, specifically, a melt electrospinning method and its products that add a voltage auxiliary electrode opposite to the direction of the original electric field between the melt electrospinning nozzle and the receiving device to reversely enhance the composite electric field. Background technique [0002] Electrospinning technology is a preparation technology capable of continuously producing micro-nano fibers. This technology uses the electric field force generated by a high-voltage electrostatic field to draw a solution or melt into a tiny jet. The jet dries and solidifies during the process of moving...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/00D04H1/728
Inventor 郑元生穆晓绮李雪芹辛斌杰
Owner SHANGHAI UNIV OF ENG SCI
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