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Electrically conductive composite fibre containing carbon nanotube and method for making same

A technology of conductive composite fibers and carbon nanotubes, which is applied in fiber processing, filament/thread forming, textiles and papermaking, etc. It can solve the problems of destroying the rheological properties of high polymers, poor spinnability and mechanical properties of mixtures, etc. , achieve excellent electrical properties, improve spinnability and mechanical properties, and reduce dosage

Inactive Publication Date: 2006-10-04
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This will inevitably destroy the rheological properties of the polymer, and make the spinnability and mechanical properties of the mixture worse.

Method used

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  • Electrically conductive composite fibre containing carbon nanotube and method for making same

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Experimental program
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Effect test

Embodiment 1

[0030] Refer to attached figure 1 , a conductive composite fiber containing carbon nanotubes, consisting of a core layer and a skin layer, wherein the core layer is a conductive core material 2, and the skin layer is a fiber-forming polymer 1; the weight percentage content of the conductive core material includes: polypropylene 84%, carbon nanotubes 1%, conductive carbon black 5%, silicone resin 15%; carbon nanotubes are single-walled carbon nanotubes with an average diameter of 10nm and an aspect ratio of 400; Conductive carbon black with an amount of 1000; the sheath-core composite ratio is: 1:1, volume ratio.

[0031] Its preparation method comprises the following steps:

[0032] a. The thermoplastic polymer, carbon nanotubes, and conductive carbon black are dried separately, and polypropylene, carbon nanotubes, conductive carbon black, and silicone resin are added to a high-speed mixer, and mixed evenly at a temperature of 160°C;

[0033] b. Extruding and granulating the...

Embodiment 2

[0037] Refer to attached figure 1, a conductive composite fiber containing carbon nanotubes, consisting of a core layer and a skin layer, wherein the core layer is a conductive core material, and the skin layer is a fiber-forming polymer; the weight percentage content of the conductive core material includes: polyethylene 99.5% , carbon nanotubes 5%, conductive carbon black 15%, gum arabic 0.5%; carbon nanotubes are multi-walled carbon nanotubes with an average diameter of 100nm and an aspect ratio of 100; conductive carbon black has a particle diameter of 150nm and an oil absorption of 100 Conductive carbon black; skin-to-core composite ratio of 1:5, volume ratio.

[0038] Its preparation method comprises the following steps:

[0039] a. Dry the thermoplastic polymer, carbon nanotubes, and conductive carbon black separately, add polyethylene, carbon nanotubes, conductive carbon black, and gum arabic to a high-speed mixer, and mix evenly at a temperature of 180°C;

[0040] b...

Embodiment 3

[0044] Refer to attached figure 1 , a conductive composite fiber containing carbon nanotubes, consisting of a core layer and a skin layer, wherein the core layer is a conductive core material, and the skin layer is a fiber-forming polymer; the weight percentage content of the conductive core material includes: polyacrylonitrile 60 %, carbon nanotubes 2.5%, conductive carbon black 5%, polyethylene terephthalate 20%; carbon nanotubes are multi-walled carbon nanotubes with an average diameter of 50nm and an aspect ratio of 200; conductive carbon black is a particle diameter of 100nm, conductive carbon black with an oil absorption of 500; the skin-to-core composite ratio is 1:10, and the volume ratio.

[0045] Its preparation method comprises the following steps:

[0046] a. Dry the thermoplastic polymer, carbon nanotubes, and conductive carbon black separately, add polyethylene, carbon nanotubes, conductive carbon black, and gum arabic to a high-speed mixer, and mix evenly at a ...

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Abstract

The disclosed conductive composite fiber with carbon nano tube comprises a conductive core layer with 60~99.5wt% thermoplastic polymer, 0~5% carbon nano tube, 0~15% conductive carbon black, and 0.5~20% dispersant; and a shin layer with fiber-forming polymer. Wherein, the preparation method comprises mixing, extruding for granulation, and mixed spinning. This invention improves product performance.

Description

technical field [0001] The invention relates to a conductive composite fiber and a preparation method thereof, in particular to a polymer-based conductive composite fiber containing two different conductive particles of carbon nanotubes and conductive carbon black and a preparation method thereof. Background technique [0002] Textiles will generate static electricity due to friction and induction during production, processing and use. The volume resistance of conventional synthetic fibers is usually around 10 10 More than Ωcm, it is easy to cause the accumulation of charges, hinder the smooth progress of production, and cause adverse effects on human health. High-voltage electrostatic discharge can produce electric shock, cause damage to electronic components, and accidental explosion of explosives and electrical explosives. In view of the increasingly prominent hazards of static electricity, research institutions and academics in various countries have paid great attentio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F1/10D01D5/34C08K3/04C08L23/12C08L23/06C08L67/00C08L33/20
Inventor 洪炳墩王彪王华平
Owner DONGHUA UNIV
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