Electro-conductive fibers with carbon nanotubes adhered thereto, electro-conductive yarn, fibers structural object, and production processes thereof
First Claim
1. An electro-conductive fiber, comprising:
- at least one synthetic fiber; and
an electro-conductive layer, comprising at least one carbon nanotube, a surfactant and a binder, and covering a surface of the at least one synthetic fiber, andhaving an electric resistance value at 20°
C. ranging from 1×
10−
2 to 4.9×
105 Ω
/cm,wherein;
the carbon nanotube comprises a multi-walled carbon nanotube,the surfactant comprises at least one member selected from the group consisting of an anionic surfactant, a cationic surfactant and a zwitterionic surfactant,the binder comprises at least one hydrophilic adhesive resin selected from the group consisting of a polyester resin, an acrylic resin, a vinyl acetate resin and a urethane resin,the covering of the electro-conductive layer relative to a whole surface of the at least one synthetic fiber is not less than 60%;
a ratio of the at least one carbon nanotube is 1 to 20 parts by mass relative to 100 parts by mass of the at least one synthetic fiber;
a ratio of the surfactant is 0.03 to 50 parts by mass relative to 100 parts by mass of the carbon nanotube; and
a ratio of the binder is 50 to 400 parts by mass relative to 100 parts by mass of the carbon nanotube; and
the electro-conductive layer has a thickness of from 0.1 to 5 μ
m.
4 Assignments
0 Petitions
Accused Products
Abstract
Electro-conductive fibers comprise synthetic fibers and an electro-conductive layer containing carbon nanotubes and covering a surface of the synthetic fibers, and the coverage of the electro-conductive layer relative to the whole surface of the synthetic fibers is not less than 60% (particularly not less than 90%). The electric resistance value of the electro-conductive fibers ranges from 1×10−2 to 1×1010 Ω/cm, and the standard deviation of the logarithm of the electric resistance value is less than 1.0. The thickness of the electro-conductive layer ranges from 0.1 to 5 μm, and the ratio of the carbon nanotubes may be 0.1 to 50 parts by mass relative to 100 parts by mass of the synthetic fibers. The electro-conductive layer may further contain a binder. The electro-conductive fibers may be produced by immersing the synthetic fibers in a dispersion with vibrating the synthetic fibers to form the electro-conductive layer adhered to the surface of the synthetic fibers. The electro-conductive fibers have the carbon nanotubes homogeneously and firmly adhered to an almost whole of a surface thereof and have an electro-conductivity and a softness.
10 Citations
26 Claims
-
1. An electro-conductive fiber, comprising:
-
at least one synthetic fiber; and an electro-conductive layer, comprising at least one carbon nanotube, a surfactant and a binder, and covering a surface of the at least one synthetic fiber, and having an electric resistance value at 20°
C. ranging from 1×
10−
2 to 4.9×
105 Ω
/cm,wherein; the carbon nanotube comprises a multi-walled carbon nanotube, the surfactant comprises at least one member selected from the group consisting of an anionic surfactant, a cationic surfactant and a zwitterionic surfactant, the binder comprises at least one hydrophilic adhesive resin selected from the group consisting of a polyester resin, an acrylic resin, a vinyl acetate resin and a urethane resin, the covering of the electro-conductive layer relative to a whole surface of the at least one synthetic fiber is not less than 60%; a ratio of the at least one carbon nanotube is 1 to 20 parts by mass relative to 100 parts by mass of the at least one synthetic fiber; a ratio of the surfactant is 0.03 to 50 parts by mass relative to 100 parts by mass of the carbon nanotube; and a ratio of the binder is 50 to 400 parts by mass relative to 100 parts by mass of the carbon nanotube; and the electro-conductive layer has a thickness of from 0.1 to 5 μ
m.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification