Complex fiber with high conductivity, high elasticity and stress sensing property and preparation thereof
A stress-sensing, high-conductivity technology, applied in the direction of one-component polyolefin rayon, one-component polyamide rayon, one-component polyester rayon, etc., can solve the problem of not having high elasticity and Problems such as piezoresistive properties, cracking, and easy peeling of conductive coatings, etc., to achieve the effects of good elasticity, low cost, and soft hand feeling
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Embodiment 1
[0026] Add 100mg of multi-walled carbon nanotubes to 100ml of tetrahydrofuran, keep the temperature of the conductive medium bath at 0°C, and disperse with 100W ultrasonic assistance, and pass the highly elastic polyolefin fibers through the carbon nanotube / tetrahydrofuran dispersion to control the dispersion of the fibers in the solvent. The soaking time is 5s, the composite fiber is obtained after the solvent volatilizes, the mass content of carbon nanotubes in it is 1%, and the resistivity of the composite fiber is 10 -2 Ω -1 cm -1 , The elongation at break is 500%.
Embodiment 2
[0028] Add 100mg single-walled carbon nanotubes to 100ml dimethylacetamide, keep the temperature of the conductive medium bath at 100°C, disperse with 50W ultrasonic assist, and disperse the highly elastic polyamide fibers through the carbon nanotubes / dimethylacetamide solution, control the soaking time of the fiber in the solvent to be 5s, obtain the composite fiber after the solvent volatilizes, the mass content of the carbon nanotube in it is 1%, and the resistivity of the composite fiber is 10 -2 Ω -1 cm -1 , The elongation at break is 500%.
Embodiment 3
[0030]Add 100mg of multi-walled carbon nanotubes into 100ml of dichloroethane, keep the temperature of the conductive medium bath at 0°C, disperse with 50W ultrasonic assistance, and pass the polyurethane fiber through the carbon nanotube / dichloroethane dispersion to control the fiber in The immersion time in the solvent is 600s, and the composite fiber is obtained after the solvent volatilizes, the mass content of carbon nanotubes in it is 20%, and the resistivity of the composite fiber is 10 2 Ω -1 cm -1 , The elongation at break is 1500%.
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