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Preparation method of conductive meta-aramid fiber

A technology of aramid fibers and conductive components, applied in the manufacture of conductive/antistatic filaments, spinning solution preparation, wet spinning, etc.

Active Publication Date: 2016-03-23
YANTAI TAYHO ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, there are no related patents and reports on meta-aramid as the base conductive fiber

Method used

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  • Preparation method of conductive meta-aramid fiber
  • Preparation method of conductive meta-aramid fiber
  • Preparation method of conductive meta-aramid fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] First, heat the carbon nanotubes in a mixture of concentrated nitric acid and concentrated sulfuric acid (volume ratio 2:1) to 60-80°C for 3 hours, then ultrasonically wash them, and dry them at 150°C for later use. The treated conductive components are enhanced and polymer compatibility;

[0031] Then add the surface-treated carbon nanotubes, hexadecyltrimethylammonium bromide, and dimethylacetamide into the high-speed mixing equipment at a mass ratio of 1:1:8, and control the temperature at 60-80°C. Make it fully mixed for 60 minutes; then grind it, the maximum size is less than 200 nanometers; add the ground carbon nanotubes in an amount of 5% to the meta-aramid spinning solution, mix well, then cool, filter, Degassing to obtain conductive fiber spinning solution;

[0032] Using wet spinning process, the polymer spinning solution is pressurized by the spinning pump and extruded through the spinneret hole with a diameter of 0.01-0.3mm, and the fiber is formed by the ...

Embodiment 2

[0035] Add the surface-treated conductive components carbon nanotubes, cetyltrimethylammonium bromide, and dimethylacetamide into the high-speed mixing equipment at a mass ratio of 2:1:7, and control the temperature at 50-70 ℃, make it fully mixed for 30 minutes; then grind it, the maximum size is less than 200 nanometers; add the ground carbon nanotubes in an amount of 8% to the meta-aramid spinning solution, mix well, and then cool, Filtration and defoaming to obtain conductive fiber spinning solution;

[0036] The meta-aramid fiber with electrical conductivity is obtained through wet spinning process, after coagulation, stretching, water washing, heat treatment and other post-treatments. The fiber density of the obtained meta-aramid conductive fiber is 2.2dtex, the breaking strength is 4.2cN / dtex, the breaking elongation is 31%, and the resistivity is 9.6×10 4 Ω·cm.

Embodiment 3

[0038] Add the surface-treated conductive component carbon nanotubes and conductive carbon black (mass ratio 1:1), and polyethylene glycol octylphenyl ether, methyl pyrrolidone in a ratio of 3:1:6 to the high-speed In the mixing equipment, control the temperature at 60-80°C, make it fully mixed for 60 minutes; then grind it, the maximum size is less than 200 nanometers; add the ground carbon nanotubes and conductive carbon black in the amount of 5% to the meta In the aramid spinning solution, fully mix evenly, then cool, filter, and defoam to obtain the conductive fiber spinning solution;

[0039] The meta-aramid fibers with conductive properties are obtained through wet spinning process and post-treatments such as coagulation, stretching, water washing, and heat treatment.

[0040] The linear density of the obtained meta-aramid conductive fiber is 2.2dtex, the breaking strength is 3.9cN / dtex, the breaking elongation is 31%, and the resistivity is 2.3×10 4 Ω·cm.

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Abstract

The invention relates to a method for preparing conduction meta-position aramid fibers. The method mainly comprises the following steps: (1) treating conduction components; (2) adding the conduction components, a solvent and a dispersing agent into high-speed mixing equipment in proportion, controlling the temperature by 50-80 DEG C, and fully mixing; and then grinding to reach the reasonable size, wherein the maximum size is below 200 nanometer; (3) adding the ground conduction component solution into a polymer solution, fully and uniformly mixing, and then cooling and deaerating to obtain a conduction fiber spinning solution; and (4) adopting a wet spinning process, carrying out solidification, drawing, washing and heat treating, and finally obtaining the meta-position aramid fibers with conductivity. The conduction meta-position aramid fibers prepared by the method has the good performances of meta-position aramid such as intrinsic inflaming retarding, high temperature resistance, size stability, spinnability and the like and meanwhile has the good conductivity of the resistivity (104-105) omega.cm.

Description

technical field [0001] The invention relates to the field of manufacturing functional polymer materials, in particular to a method for preparing conductive meta-aramid fiber. Background technique [0002] Meta-aramid fiber is a special functional fiber with multiple properties such as thermal stability, flame retardancy, corrosion resistance and radiation resistance. Important basic materials in many fields such as racing cars and environmental protection. Its thermal stability and high flame retardancy have earned it the reputation of "fireproof fiber". [0003] However, meta-aramid fibers, like other polymer materials, have good electrical insulation and dielectric properties, which limit the application of meta-aramid fibers in some fields. For example, filter bags for industrial energy used in environmental protection require high-temperature-resistant aramid filter felts for dust removal and purification due to the high temperature of the flue gas in the application. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/90D01F1/09D01D1/02D01D5/06
Inventor 宋翠艳陈延平潘士东吕继平邓召良
Owner YANTAI TAYHO ADVANCED MATERIALS CO LTD
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