Composite nano fiber endless tow preparing apparatus and its preparing method

A composite nanofiber and nanofiber technology, applied in fiber processing, rayon manufacturing, conjugated rayon, etc., can solve the problems of fiber loss and instability, achieve thick tow, easy operation, and improve mechanical properties Effect

Inactive Publication Date: 2006-05-24
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And there is often fiber loss, so instability is inevitable

Method used

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  • Composite nano fiber endless tow preparing apparatus and its preparing method
  • Composite nano fiber endless tow preparing apparatus and its preparing method
  • Composite nano fiber endless tow preparing apparatus and its preparing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] 10g of poly-L-lactic acid PLLA (viscosity average molecular weight 100,000) was dissolved in a mixed solvent of 50ml of acetone and 50ml of N,N-dimethylformamide to prepare solution No. 1, lactide-glycolide copolymer PLGA (which Mass composition: lactide 50%, glycolide 50%, viscosity average molecular weight 100,000) 15g is dissolved in a mixed solvent of 50ml acetone and 50ml N,N-dimethylformamide to prepare solution No. 2, and solution No. 1 is transported Give 3 electrospinning nozzles in the same row on the bracket, and deliver the No. 2 solution to another row of 3 electrospinning nozzles on the bracket. The nozzles are 40cm apart. A 90° angle is formed between the plane where the bracket is located and the fixing rod. A DC high voltage of opposite polarity ±20 kV was applied to the two rows of electrospinning nozzles with opposite nozzles, and the inner diameter of the electrospinning nozzles was 0.5 mm. The speed at which the godet pair drew the filament bundle...

Embodiment 2

[0050] Poly-L-lactic acid PLLA (viscosity average molecular weight 100,000) 10g was dissolved in a mixed solvent of 50ml acetone and 50ml N,N-dimethylformamide to prepare solution No. 1, polycaprolactone PCL (molecular weight 90,000) 10g dissolved Prepare solution No. 2 in 100ml N,N-dimethylformamide, and deliver No. 1 solution to the same row of 4 electrospinning nozzles on the stent, and deliver No. 2 solution to another row of 4 electrospinning nozzles on the stent. The distance between adjacent electrospinning nozzles in the same row above is 15 cm, and the distance between electrospinning nozzles in two rows with opposite nozzles is 40 cm. A 90° angle is formed between the plane where the bracket is located and the fixing rod. A DC high voltage of opposite polarity ±20 kV was applied to the two rows of electrospinning nozzles with opposite nozzles, and the inner diameter of the electrospinning nozzles was 0.5 mm. The speed at which the godet pair drew the filament bundle...

Embodiment 3

[0052] Poly-L-lactic acid PLLA (viscosity average molecular weight 100,000) 10g was dissolved in a mixed solvent of 50ml acetone and 50ml N,N-dimethylformamide to prepare solution No. 1, Zein ZEIN (molecular weight 35,000) 35g was dissolved in 100ml The solution No. 2 is prepared in an ethanol aqueous solution (the volume ratio of ethanol / water is 80 / 20), and the No. 1 solution is delivered to the same row of 3 electrospinning nozzles on the support. The inner diameter of the electrospinning nozzle is 0.8 mm, and the No. There are 3 electrospinning nozzles in another row on the support. The inner diameter of the electrospinning nozzles is 1.2 mm. The distance between adjacent electrospinning nozzles in the same row on the support is 15 cm. A 90° angle is formed between the plane where the bracket is located and the fixing rod. Apply DC high voltages of opposite polarity ±25kV to the two rows of electrospinning nozzles with opposite nozzles respectively. The speed at which the...

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Abstract

A device and method for preparing compound nano fiber endless tow, which contains feeding material liquid to pair of electric spinning nozzle on frame, each nozzle respectively applied with high dc voltage with opposite polarity, each pair of nozzle jetting out nano fiber with opposite electric charge, said nano fiber attracting and colliding each other to form compound nano fiber, then forming nano fiber endless tow after drawing and stretching, the first opposite set pair of electric spinning nozzle jetted compound nano fiber endless tow is stretched down and used as acceptor which covered by the nano fiber jetted by second pair of nozzle an d forming two layers of compound nano fiber endless tow after drawing and stretching, in turn to get multilayer compound nano fiber endless tow after drawing and stretching by godet roller.

Description

technical field [0001] The invention relates to a method for preparing a composite nanofiber filament bundle, which belongs to the technical field of special fiber preparation. Background technique [0002] With the development of society and the improvement of people's living standards, the fiber industry is also facing huge challenges. A single fiber can no longer meet people's requirements for multiple functions, so skin-core, sandwich, side-by-side and sea-island types have begun to appear. and various other types of composite fibers. The US patent (US 4,717,325) designs a composite fiber spinneret, the molten component polymer is drawn out from the extruder, and the multi-layer composite fiber is obtained through the spinning holes of the composite fiber spinneret. [0003] Electrospinning, an efficient method to fabricate polymer nanofibers by applying an external electric field in polymer solutions, has received special attention in recent years. Taking advantage of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/12D01F1/02
CPCD01D5/0061D01F8/00
Inventor 李新松姚琛孙复钱
Owner SOUTHEAST UNIV
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