Conductive composite fiber and preparation method thereof
A conductive composite fiber and fiber technology, which is applied in fiber processing, textiles and papermaking, physical treatment, etc., can solve the problems of ordinary fibers losing mechanical properties, conductive coatings are easy to fall off, and fiber structures are easy to be damaged. Soft touch and low cost effect
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Embodiment 1
[0026] First pretreat the polyurethane fiber in an aniline saturated aqueous solution for 5 minutes, take it out of the shade and dry it; then immerse it in a 1.1mg / ml graphene aqueous dispersion, and in an ice-water bath, ultrasonically assists the graphene to be adsorbed to the outer layer of the fiber, soaking The time is 1min, take it out and dry it; then soak the above fiber in the hydrochloric acid solution with a concentration of 3mol / ml for 30min, wash and dry, and prepare the conductive composite fiber (see figure 1 ), where graphene accounts for 0.5% by mass of the conductive fiber, and the conductivity of the conductive fiber is 6.9×10 1 Ω -1 cm -1 .
Embodiment 2
[0028] First pretreat the polyamide fibers in an aniline saturated aqueous solution for 12 minutes, and dry them in a cool place; then immerse them in a 40 mg / ml carbon nanotube aqueous dispersion, and ultrasonically assist the carbon nanotubes in the ice-water bath to adsorb the carbon nanotubes to the outer layer of the fibers. The soaking time is 35 minutes, take it out and dry it in the air; then soak the above fiber in the hydrochloric acid solution with a concentration of 2mol / ml for 20 minutes, wash and dry, and prepare the conductive composite fiber (see figure 2 ), where carbon nanotubes account for 9% by mass of the conductive fiber, and the conductivity of the conductive fiber is 1.2×10 2 Ω -1 cm -1 .
Embodiment 3
[0030] First pretreat the polyamide fibers in a saturated pyrrole aqueous solution for 15 minutes, and then dry them in a cool place; then immerse them in a 5 mg / ml graphite oxide aqueous dispersion, and ultrasonically assist in the adsorption of graphite oxide to the outer layer of the fibers in an ice-water bath. Take out and dry for 25 minutes; then soak the above-mentioned fibers in a hydrochloric acid solution with a concentration of 1mol / ml for 60 minutes, wash and dry to prepare a conductive composite fiber, wherein the mass percentage of graphite oxide in the conductive fiber is 6 %, the conductivity of the conductive fiber is 3.6×10 -4 Ω -1 cm -1 .
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