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Composite conductive fiber with coaxial three-element, and preparation method thereof.

A composite conductive and binary composite technology, which is applied in fiber processing, fiber type, textiles and papermaking, etc., can solve the problems of difficulty in blending spinning process, degradation of fiber mechanical properties, high addition of conductive polymer particles, etc., and achieve equipment investment Low cost, simple preparation process, good conductive effect

Inactive Publication Date: 2011-09-28
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For conductive fibers containing intrinsically conductive polymers, in the direct spinning method of blends, the addition of conductive polymer particles is relatively high, resulting in difficulties in the blending spinning process, and the mechanical properties of the fibers are greatly reduced. The strong shear force used in the spinning process will also destroy the structure of the conductive polymer, which will greatly reduce the conductive performance of the composite fiber
The conductive coating of the composite fiber obtained by the post-treatment coating method is easy to fall off during washing and friction, and it will also cause the ordinary fiber to lose its original good mechanical properties, making it difficult to further weave into a fabric, and its low electrical conductivity limits Its scope of application, especially in the polymer matrix, the embedding of intrinsically conductive polymers will cause it to lose its unique electrical properties, such as: energy storage characteristics, adsorption capacity

Method used

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  • Composite conductive fiber with coaxial three-element, and preparation method thereof.
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  • Composite conductive fiber with coaxial three-element, and preparation method thereof.

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Polyurethane fibers were treated in ether for 5 minutes and dried, and this polyurethane fibers were treated in tetrahydrofuran treatment solution containing carbon nanotubes (single-walled carbon nanotubes, diameter 0.4nm, length 1 μm) for 1 minute; treated fibers Soak in aniline hydrochloric acid solution (hydrochloric acid concentration: 1M) for 1 hour, the concentration of aniline is 0.1mol / L; then add ammonium persulfate hydrochloric acid solution (concentration of ammonium persulfate is 0.1mol / L) dropwise 0.5ml / min, the system was reacted in an ice-water bath for 5h, and then continued to react at 2°C for 5h, and the fiber was taken out and cleaned to obtain a polyaniline / carbon nanotube / polyurethane ternary composite fiber, wherein the weight of each component was The ratio is 1 part of polyaniline, 1 part of carbon nanotube, and 98 parts of polyurethane; the electrical conductivity of the polyaniline / carbon nanotube / polyurethane ternary composite fiber is 10 -4 ...

Embodiment 2

[0032]The polyurethane fiber was treated in ether for 30 minutes and dried, and the polyurethane fiber was treated for 10 minutes in the dimethyl sulfoxide treatment liquid containing carbon nanotubes (multi-walled carbon nanotubes, diameter 60nm, length 15 μm); The fibers were soaked in aniline hydrochloric acid solution (hydrochloric acid concentration: 1M) for 2 hours, and the aniline concentration was 1mol / L; then ammonium persulfate hydrochloric acid solution (ammonium persulfate concentration: 1.25mol / L) was added dropwise The acceleration is 1ml / min. After the system is reacted in an ice-water bath for 6 hours, the reaction is continued at 4°C for 4 hours. The fiber is taken out and cleaned to obtain a polyaniline / carbon nanotube / polyurethane ternary composite fiber, wherein the weight of each component is The ratio is 20 parts of polyaniline, 10 parts of carbon nanotubes, and 70 parts of polyurethane; the electrical conductivity of the polyaniline / carbon nanotube / polyur...

Embodiment 3

[0034] The polyurethane fibers were treated in ether for 5 minutes successively, and dried, and the polyurethane fibers were treated in the dimethylacetamide treatment liquid containing carbon nanotubes (single-walled carbon nanotubes, 20 nm in diameter, and 5 μm in length) for 1 minute; The treated fiber is immersed in pyrrole sodium chloride solution (sodium chloride solution concentration is 0.3M) for 1h, and the pyrrole concentration is 0.1mol / L; then ferric trichloride sodium chloride solution is added dropwise to the solution (Concentration of ferric chloride is 0.2mol / L), and the addition rate is 1.5ml / min. After the system reacts in an ice-water bath for 7 hours, it continues to react for 3 hours at 10°C, and the fibers are taken out and cleaned to obtain polypyrrole carbon nanotubes. / polyurethane ternary composite fiber, wherein the weight ratio of each component is 5 parts of polypyrrole, 5 parts of carbon nanotubes, and 80 parts of polyurethane; the electrical condu...

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Abstract

The present invention relates to a composite conductive fiber with coaxial three-element, and a preparation method thereof. The composite conductive fiber comprises a core layer of polyurethane fiber, an intermediate layer of carbon nano-tube, and an outer layer of intrinsic conducting polymer, wherein the three layers of the composite conductive fiber are coaxial. The preparation method comprises comprises: (1) preparing pretreated polyurethane fiber; (2) immersing the pretreated polyurethane fiber in a organic solvent reaction bath containing the carbon nano-tube to carry out a process to obtain a two-element composite fiber of carbon nano-tube / polyurethane; (3) immersing the two-element composite fiber of carbon nano-tube / polyurethane in a intrinsic conductive polymer monomer solution,then adding an oxidizing agent solution in a dropwise manner, carrying out a washing and drying for the resulting solution after complete reacting to obtain the composite conductive fiber with coaxial three-element. The composite conductive fiber provided by the present invention has advantages of good conductive effect, high elasticity, soft hand feeling, simple preparation technology and low input cost of equipment, and is applicable for large scale production and large scale application.

Description

technical field [0001] The invention belongs to the field of composite conductive fiber and its preparation, in particular to a ternary coaxial composite conductive fiber and its preparation method. Background technique [0002] Conductive fiber is an important differentiated fiber variety with a conductivity greater than 10 -8 Ω -1 cm -1 , has a wide range of uses. In addition to being commonly used in antistatic textiles, textiles with a high content of conductive fibers also have the characteristics of explosion-proof and microwave shielding, and are also a new type of material that can be potentially used in flexible supercapacitors. Mixing a small amount of conductive fibers into synthetic fibers can solve the problem of static electricity in textile processing; conductive fibers can also be used as dustproof, antistatic work clothes or multifunctional in the fields of semiconductor industry, electronic precision industry, medicine, biological science, etc. sensor de...

Claims

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Application Information

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IPC IPC(8): D06M15/37D06M101/38D06M15/61D06M13/165D06M11/74
Inventor 秦宗益范青青武永涛张晓琳
Owner DONGHUA UNIV
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