CARBON NANOTUBES FIBER HAVING LOW RESISTIVITY, HIGH MODULUS AND/OR HIGH THERMAL CONDUCTIVITY AND A METHOD OF PREPARING SUCH FIBERS BY SPINNING USING A FIBER SPIN-DOPE

Carbon nanotubes (CNT) fibers having a resistivity lower than 120 μ *cm are prepared by a wet spinning process including the steps of supplying a spin-dope of carbon nanotubes to a spinneret, extruding the spin-dope through at least one spinning hole in the spinneret to form spun carbon nanotubes fi...

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Hauptverfasser: HOOGERWERF, RONALD EDWARD, OTTO, MARCIN, JAN, WAARBEEK TER, RONALD FOLKERT, BEHABTU, NATNAEL, TSENTALOVICH, DMITRI, MA, ANSON, JONG DE, JORRIT, YOUNG, COLIN, PASQUALI, MATTEO
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:Carbon nanotubes (CNT) fibers having a resistivity lower than 120 μ *cm are prepared by a wet spinning process including the steps of supplying a spin-dope of carbon nanotubes to a spinneret, extruding the spin-dope through at least one spinning hole in the spinneret to form spun carbon nanotubes fibers, and coagulating the spun carbon nanotubes fibers in a coagulation medium to form coagulated carbon nanotubes fibers. The carbon nanotubes fibers are drawn at a draw ratio higher than 1.0. The carbon nanotubes have a length of at least 0.5 μm. The carbon nanotubes fibers can further have a resistivity lower than 50 μ *cm. At the same time, the CNT fibers can have high modulus.