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Device and method for preparing combined continuous electro-spinning nano fibrous membrane

A technology for electrospinning nanofibers and manufacturing devices, which is applied in fiber processing, textile and papermaking, filament/thread forming, etc., can solve the problems of decreased production efficiency of electrospun nanofibers, avoid electrostatic repulsion, and achieve good uniformity. , the effect of not easily dissipated

Inactive Publication Date: 2007-08-29
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] All of the above processes lead to a decrease in the production efficiency of electrospun nanofibers

Method used

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  • Device and method for preparing combined continuous electro-spinning nano fibrous membrane
  • Device and method for preparing combined continuous electro-spinning nano fibrous membrane

Examples

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Effect test

preparation example Construction

[0027] A method for preparing an electrospun nanofiber membrane suitable for a combined continuous electrospinning nanofiber membrane manufacturing device of the present invention comprises the following steps: (1) dispensing the high polymer solution in the liquid storage tank 4 by a metering infusion pump 5 Pumped out, and delivered to row-type electrospinning nozzle 7 through infusion tube 6; The nozzle 7 applies a DC high voltage of 10KV-100KV with the same or opposite polarity, and the polymer solution at the top of the nozzle is sprayed under the action of an electric field to form nanofibers; 1 The vertical part is parallel and reciprocates at a constant speed, the speed is 2cm / s-20cm / s, and the amplitude is 5-30cm. The continuous receiving web 1 moves upward or downward at a constant speed at a speed of 1-100 cm / s, and the continuous electrospun nanofiber membrane is received on the continuous receiving web 1 .

[0028]The polymer solution is a solution of a polymer d...

Embodiment 1

[0030] Dissolve 100g of polyacrylonitrile PAN in 1000ml of N,N-dimethylformamide, pump the solution in the liquid storage tank from the metering infusion pump, and send it to the row-type electrospinning nozzle through the infusion tube, and the fixing bracket is fixed from top to bottom 5 row-type electrospinning nozzles, the distance between each row is 20cm, and there is a row of limiting electrodes connected by wires at the positions 20cm away from the uppermost and lowermost row-type electrospinning nozzles. Each row-type electrospinning nozzle has 5 nozzles, the distance between the nozzles is 20 cm, and there are two limiting electrodes connected to the nozzles through wires at a distance of 20 cm from the nozzles at both ends, and the inner diameter of the nozzles is 1.0 mm. A positive DC high voltage of 20KV is applied to the row-type electrospinning nozzles of the adjacent electrospinning units, and the polymer solution at the top of the nozzles is spun under the acti...

Embodiment 2

[0032] Dissolve 100g of poly-L-lactic acid PLLA (viscosity average molecular weight: 100,000) in a mixed solvent of 500ml acetone and 500ml N,N-dimethylformamide, pump the solution in the storage tank from the metering infusion pump, and pass it through the infusion tube Delivered to the row-type electrospinning nozzles, the fixed bracket fixed 10 row-type electrospinning nozzles from top to bottom, and the distance between each row was 15cm. Each row-type electrospinning nozzle has 10 nozzles, the distance between the nozzles is 15 cm, and there are two limiting electrodes connected to the nozzles through wires at a distance of 15 cm from the nozzles at both ends, and the inner diameter of the nozzles is 0.5 mm. A positive DC high voltage of 10KV is applied to the row-type electrospinning nozzles of the adjacent electrospinning units, and the polymer solution at the top of the nozzles is spun under the action of an electric field to form nanofibers. The distance between the m...

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Abstract

Kockdown series electricity spin nanometre fiber membrane produce set is a preparation method .The set constitute with series incept net (1), electricity spin unit (2). The metal net lay the facing of a quilt of erect part of series incept net parallel, electricity spin unit lay the face of erect part of series incept symmetry with metal net. Series incept drive by drive roller, move up and down, electricity spin unit keep the distance with series incept net and move landscape orientation. The high polymer liquor is pumped with computation transfusion from liquid tank. And transport to line electricity spin spray, throw the same or adverse direct current to electricity spin spray of close electricity spin unit by high voltage set. The high polymer liquor of spray head sprays silk under the function of electric field, forming nanometre fibre. This method let the nanometre fibre no easy dissipate, nanometre fibre membrane equality well.

Description

technical field [0001] The invention relates to a combined continuous electrospinning nanofiber film manufacturing device and a preparation method, which belong to the technical field of preparation of special fiber materials. Background technique [0002] Electrospinning has been recognized as a simple and effective technique for preparing nanofibrous materials. The diameter of electrospun fibers is 100-1000 times smaller than that obtained by ordinary spinning methods, and has a huge specific surface area. It can not only be used as a high-efficiency filter material, but also has broad application prospects in biomedical materials, chemical sensors, protective materials, nanocomposites and other fields. [0003] Electrospinning is an efficient spinning technique for fabricating polymer nanofibers by applying an external electric field in a polymer solution. US patents (US6616435B2, US6689374B2, US6713011B2, US6743273B2) have designed a multi-nozzle continuous electrospin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/00
Inventor 李新松姚琛孙复钱
Owner SOUTHEAST UNIV
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