Carbon nanotube modified polyvinyl akohol nano-fiber yarn and preparing method thereof

A technology of carbon nanotube modification and polyvinyl alcohol, applied in fiber treatment, fiber chemical characteristics, yarn, etc., can solve problems such as increased equipment investment, increased difficulty in product quality control, increased process parameters, etc., to achieve increased strength , blending and spinning processes are easy to control, and the effect of reducing volume resistance

Active Publication Date: 2014-03-26
涡阳量子信息科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Spinning this kind of conductive fiber with high carbon black content requires the use of composite spinning technology to prepare a skin-core structure, and the use of twin-screw spinning machine equipment for spinning, which leads to increased investment in equipment and process parameters of the enterprise. Increased difficulty in quality control

Method used

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  • Carbon nanotube modified polyvinyl akohol nano-fiber yarn and preparing method thereof
  • Carbon nanotube modified polyvinyl akohol nano-fiber yarn and preparing method thereof
  • Carbon nanotube modified polyvinyl akohol nano-fiber yarn and preparing method thereof

Examples

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Effect test

Embodiment 1

[0029] Weigh an appropriate amount of aluminum trichloride, add the anhydrous solvent dimethyl sulfoxide (DMSO) dropwise to aluminum trichloride in an ice-water mixed bath with stirring, and heat to trichloride after the addition is complete. Aluminum chloride is completely dissolved, and is made into a 4wt% aluminum chloride solution. Add polyvinyl alcohol to anhydrous dimethyl sulfoxide to form a solution with a concentration of 5 wt %, add carbon nanotubes at a mass ratio of multi-walled carbon nanotubes to polyvinyl alcohol at a ratio of 1:10, and mix thoroughly. The dimethyl sulfoxide solution of polyvinyl alcohol and carbon nanotubes was poured into the solution of aluminum trichloride, and reacted at 70° C. for 24 hours. Pour the reaction solution into a solution of methanol and dilute hydrochloric acid (0.1mol / L) with a mass ratio of 1:2 to precipitate, centrifuge at 13000rpm, separate and dry to obtain polyvinyl alcohol-modified carbon nanotubes , denoted as CNT-g-PV...

Embodiment 2

[0034] Weigh an appropriate amount of aluminum trichloride, add the anhydrous solvent dimethyl sulfoxide (DMSO) dropwise to aluminum trichloride in an ice-water mixed bath with stirring, and heat to trichloride after the addition is complete. Aluminum chloride is completely dissolved to form a 10wt% aluminum chloride solution. Add polyvinyl alcohol to anhydrous dimethyl sulfoxide to form a solution with a concentration of 20wt%, add carbon nanotubes at a mass ratio of 1:20 to multi-walled carbon nanotubes and polyvinyl alcohol, mix thoroughly, and The dimethyl sulfoxide solution of polyvinyl alcohol and carbon nanotubes was poured into the solution of aluminum trichloride, and reacted at 90° C. for 12 hours. Pour the reaction solution into a solution of methanol and dilute hydrochloric acid (0.1mol / L) with a mass ratio of 1:2 to precipitate, centrifuge at 13000rpm, separate and dry to obtain polyvinyl alcohol-modified carbon nanotubes .

[0035]Add modified carbon nanotubes ...

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Abstract

The invention relates to a carbon nanotube modified polyvinyl akohol nano-fiber yarn and a preparing method thereof. A carbon nanotube and a certain amount of polyvinyl akohol are mixed in a dissolved mode, alchlor is used as a catalyst for Friedel-Crafts alkylation reaction, residual polyvinyl akohol and aluminium ions are eliminated through post-processing, and the carbon nanotube modified in a polyvinyl akohol grafting mode is obtained; the grafted carbon nanotube is dissolved in solvent, the grafted carbon nanotube and an appropriate amount of polyvinyl akohol are prepared into spinning stock solution, a carbon nanotube modified polyvinyl akohol nano-fiber parallel array is prepared through an electrostatic spinning process, and the fiber yarn is obtained in a twisted mode. According to the carbon nanotube modified polyvinyl akohol nano-fiber yarn and the preparing method thereof, the polyvinyl akohol and the carbon nanotube are combined through chemical bonds by means of Friedel-Crafts alkylation reaction, grafting efficiency of the carbon nanotube is obviously improved, dispersibility of the carbon nanotube in the solvent and stress transfer efficiency between the carbon nanotube and a polyvinyl akohol matrix are improved, and the nano-fiber yarn having excellent mechanical performance and conductive performance is prepared.

Description

technical field [0001] The invention relates to a carbon nanotube modified polyvinyl alcohol nanofiber yarn and a preparation method thereof. Background technique [0002] Electrospinning technology is an extremely convenient method for preparing ultrafine fibers. Ultrafine fibers with diameters ranging from tens of nanometers to several microns can be produced by electrospinning. However, most of the electrospun fibers are obtained in the form of non-woven fabrics, which limits the application of electrospun fibers in a wider field. Most of them can only be used for filtration, tissue engineering scaffolds, graft coatings and wound repair. [0003] Polyvinyl alcohol (PVA) is a water-soluble polymer obtained by hydrolysis of polyvinyl acetate. Good spinnability and other characteristics. As a one-dimensional nanomaterial, carbon nanotubes are light in weight, perfectly connected in a hexagonal structure, and have many excellent mechanical, electrical, and chemical propert...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D02G3/02D01D5/00D01F6/50D01F1/10C08G83/00
Inventor 戴礼兴陈红菲
Owner 涡阳量子信息科技有限公司
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